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Technical content

Features

n Five model sizes available - 0805, 1206, 1210, 1812 and 2220 n Supply voltages: 12 V, 24 V and 42 V n Broad range of current and energy handling capabilities n Low clamping voltage - Vc n Non-sensitive to mildly activated fluxes n Non-plastic coating for better flammability rating n +150 °C maximum continuous operating temperature n Load Dump Energy up to 50 J available upon request n RoHS compliant* n AEC-Q200 Grade 0 upon request Absolute Maximum Ratings Parameter Value Units Continuous: Steady State Applied Voltage DC Voltage Range (Vdc) 16 to 56 V Transient: Load Dump Energy (WLD) Jump Start Capability (5 minutes), (Vjump) Peak Single Pulse Surge Current, 8/20 µs Waveform (Imax) Single Pulse Surge Energy, 10/1000 µs Waveform (Wmax) 1 to 25 24.5 to 65 120 to 2000 0.3 to 30 J V A J Operating Ambient Temperature -55 to +150 °C Storage Temperature Range -55 to +150 °C Threshold Voltage Temperature Coefficient < +0.05 %/°C Response Time < 2 ns Climatic Category 55 / 150 / 56 Load Dump Energy (WLD) up to 50 J available upon request. U

3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Device Ratings Model Vrms Vdc Vn @ 1 mA Vjump 5 min. Vc Ic 8/20 µs Imax 8/20 µs Wmax 10/1000 µs WLD 10 times P max. Ctyp @ 1 kHz V V V V V A A J J W nF

12 V Power Supply

AV 14 K 0805 121 HT 14 16 24 24.5 40 1 120 0.3 1 0.008 0.44 AV 14 K 1812 801 HT 14 16 24 24.5 40 5 800 2.4 6 0.015 4.50 AV 14 K 2220 122 HT 14 16 24 24.5 40 10 1200 5.8 12 0.030 10.00 AV 17 K 0805 121 HT 17 20 27 30 44 1 120 0.5 1 0.008 0.37 AV 17 K 1206 201 HT 17 20 27 30 44 1 200 1.1 1.5 0.008 0.81 AV 17 K 1210 401 HT 17 20 27 30 44 2.5 400 1.8 3 0.010 2.00 AV 17 K 1812 801 HT 17 20 27 30 44 5 800 2.9 6 0.015 3.80 AV 17 K 2220 122 HT 17 20 27 30 44 10 1200 7.2 12 0.030 8.00

24 V Power Supply

AV 20 K 1206 201 HT 20 26 22 30 54 1 200 1.6 1.5 0.008 0.78 AV 20 K 1210 401 HT 20 26 22 30 54 2.5 400 1.9 3 0.010 1.65 AV 20 K 1812 801 HT 20 26 22 30 54 5 800 3.0 6 0.015 3.30 AV 20 K 2220 122 HT 20 26 22 30 54 10 1200 8.0 12 0.030 7.00 AV 30 K 1206 201 HT 30 34 47 50 77 1 200 2.0 1.5 0.008 0.53 AV 30 K 1210 401 HT 30 34 47 50 77 2.5 400 2.3 3 0.010 1.10 AV 30 K 1812 801 HT 30 34 47 50 77 5 800 3.8 6 0.015 2.20 AV 30 K 2220 122 HT 30 34 47 50 77 10 1200 10.0 12 0.030 6.50

42 V Power Supply

AV 40 K 1206 201 HT 40 56 68 65 110 1 200 2.2 1.5 0.008 0.40 AV 40 K 1210 401 HT 40 56 68 65 110 2.5 400 2.6 3 0.010 0.90 AV 40 K 1812 801 HT 40 56 68 65 110 5 800 4.8 6 0.015 1.80 AV 40 K 2220 122 HT 40 56 68 65 110 10 1200 10.5 12 0.030 5.50

3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Size Dimension L W t (Max.) 0805 2.0 ± 0.25 (.079 ± .010) 1.25 ± 0.20 (.049 ± .008) 1.0 (.039) 1206 3.2 ± 0.30 (.126 ± .012) 1.60 ± 0.20 (.063 ± .008) 1.2 (.047) 1210 3.2 ± 0.30 (.126 ± .012) 2.50 ± 0.25 (.098 ± .010) 1.3 (.051) 1812 4.7 ± 0.40 (.185 ± .016) 3.20 ± 0.30 (.126 ± .012) 1.3 (.051) 2220 5.7 ± 0.50 (.224 ± .020) 5.00 ± 0.40 (.197 ± .016) 1.4 (.055) DIMENSIONS: MM (INCHES) W L t 0.5 ± 0.25 (.020 ± .010)

CDDFN5-0504N - TVS/Steering Diode Array Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. AVHT Series - High Temperature Automotive Grade Varistors How to Order AV20K1210401NIR1HT Series Designator AV = AV Series Maximum Continuous Working Voltage (Vrms) 20 = 20 VAC Vn Tolerance K = 10 % Model Size

  • 0805
  • 1206
  • 1210
  • 1812
  • 2220 Maximum Surge Current
  • 121 = 120 A • 401 = 400 A • 122 = 1200 A
  • 201 = 200 A • 801 = 800 A End Terminations
  • NI = NiSn barrier type end terminations suitable for Pb and Pb-free reflow soldering Packaging R1 = 180 mm (7-inch) reel R2 = 330 mm (13-inch) reel Special Requirements HT = High Temperature Typical Part Marking Instructions for Creating Orderable Part Number: 1) Start with base part number in characteristics table (example: AV20K1210401). 2) Add End Termination: NI standard (example part number becomes AV20K1210401NI). 3) Add Packaging: R1 (example part number becomes AV20K1210401NIR1). 4) Add High Temperature Special Requirement: HT (example part number becomes AV20K1210401NIR1HT). 4) Part number can have no spaces or lower case letters. No marking.

3312 - 2 mm SMD Trimming Potentiometer 3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Pulse Rating Curves Model Size 0805 - (AV 14 K 0805 121 HT ~ AV 17 K 0805 121 HT) Protection Level Model Size 0805 - (AV 14 K 0805 121 HT ~ AV 17 K 0805 121 HT) Model Size 1206 - (AV 14 K 1206 201 HT ~ AV 40 K 1206 201 HT) Model Size 1206 - (AV 14 K 1206 201 HT ~ AV 40 K 1206 201 HT) I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 20 17 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 20 17 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 20 17 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 103 102 101 100 10-1 51 0351 045 10-2 20 17

3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Pulse Rating Curves Model Size 1210 - (AV 14 K 1210 401 HT ~ AV 40 K 1210 401 HT) Protection Level Model Size 1210 - (AV 14 K 1210 401 HT ~ AV 40 K 1210 401 HT) Model Size 1812 - (AV 14 K 1812 801 HT ~ AV 40 K 1812 801 HT) Model Size 1812 - (AV 14 K 1812 801 HT ~ AV 40 K 1812 801 HT) 20 17 210 210 10 4 10 3 510 610 20 17 1420 1010 104 105 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 5 1035 104510-1 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 04510-1 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 20 17 210 210 10 4 10 3 510 610 20 17 1420 1010 104 105 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 5 1035 104510-1 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 04510-1 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 20 17 210 210 10 4 10 3 510 610 20 17 1420 1010 104 105 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 5 1035 104510-1 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 04510-1 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 20 17 210 210 10 4 10 3 510 610 20 17 1420 1010 104 105 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 5 1035 104510-1 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 04510-1 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104

3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Pulse Rating Curves Model Size 2220 - (AV 14 K 2220 122 HT ~ AV 40 K 2220 122 HT) Protection Level Model Size 2220 - (AV 14 K 2220 122 HT ~ AV 40 K 2220 122 HT) 20 17 1720 20 17 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 04510-1 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 045 10-1 20 17 1720 20 17 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 I (Amps) V (Volts) 400 200 100 10-5 10-4 10-3 10-2 10-1 100 102101 103 104 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 04510-1 tp (µs) Imax (Amps) 101 102 104 103 102 101 100 51 0351 045 10-1

3312 - 2 mm SMD Trimming Potentiometer Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. 3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Soldering Pad Configuration L W t 0.5 ± 0.25 (.020 ± .010) D C A A BB Size Dimension L W t (Max.) A (Max.) B C D 0805 2.0 ± 0.25 (.079 ± .010) 1.25 ± 0.20 (.049 ± .008) 1.1 (.043) 1.4 (.055) 1.2 (.047) 1.0 (.039) 3.4 (.134) 1206 3.2 ± 0.30 (.126 ± .012) 1.60 ± 0.20 (.063 ± .008) 1.6 (.063) 1.8 (.071) 1.2 (.047) 2.1 (.083) 4.5 (.177) 1210 3.2 ± 0.30 (.126 ± .012) 2.50 ± 0.25 (.984 ± .010) 1.8 (.071) 2.8 (.110) 1.2 (.047) 2.1 (.083) 4.5 (.177) 1812 4.7 ± 0.40 (.185 ± .016) 3.20 ± 0.30 (.126 ± .012) 1.9 (.075) 3.6 (.142) 1.5 (.059) 3.2 (.126) 6.2 (.244) 2220 5.7 ± 0.50 (.224 ± .020) 5.00 ± 0.40 (.197 ± .016) 1.9 (.075) 5.5 (.217) 1.5 (.059) 4.2 (.165) 7.2 (.283) DIMENSIONS: MM (INCHES) Packaging Specifications Conforms to IEC Publication 286-3 Ed. 4: 2007-06 Tape P1 ± 0.1 (P1 ± .004) D1 B0 4 ± 0.1 (.157 ± .004) 1.5 +0.1/-0 (.059 +.004/-0) (.315) (NOTE A) (NOTE A) DIA. 0.6 (.024)MAX. 10 ° MAX. COVER TAPE 1.75 ± 0.1 (.069 ± .004) F ± 0.05 (F ± .002) W +0.3/-0.1 (W +.012/-.004) 60 + 2.0 (2.362 + .079) A - 2.0 (A - 0.79) 21 ± 0.8 (.827 ± .315) 2 ± 0.5 (.079 ± .020) 12.80 + 0.5 (.504 + .020) 0.1 (.004)MAX. DIMENSIONS: MM (INCHES)

3312 - 2 mm SMD Trimming Potentiometer CDDFN5-0504N - TVS/Steering Diode Array Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. AVHT Series - High Temperature Automotive Grade Varistors Packaging Specifications (Continued) DIMENSIONS: MM (INCHES) P1 ± 0.1 (P1 ± .004) D1 B0 4 ± 0.1 (.157 ± .004) 1.5 +0.1/-0 (.059 +.004/-0) (.315) (NOTE A) (NOTE A) DIA. 0.6 (.024)MAX. 10 ° MAX. COVER TAPE 1.75 ± 0.1 (.069 ± .004) F ± 0.05 (F ± .002) W +0.3/-0.1 (W +.012/-.004) 60 + 2.0 (2.362 + .079) A - 2.0 (A - 0.79) 21 ± 0.8 (.827 ± .315) 2 ± 0.5 (.079 ± .020) 12.80 + 0.5 (.504 + .020) 0.1 (.004)MAX. Reel Dimension Model Size 0805 1206 1210 1812 2220 1.6 (.063) 1.9 (.075) 2.9 (.114) 3.75 (.148) 5.6 (.220) 2.4 (.094) 3.75 (.148) 3.7 (.146) (.197) 6.25 (.246) K0 MAX. 1.1 (.043) 1.8 (.071) (.079) B1 MAX. 4.35 (.171) 8.2 (.323) D1 DIA. MIN. 0.3 (.012) 1.5 (.059) E2 MIN. 6.25 (.246) 10.25 (.404) (.157) (.315) Dimension Model Size 0805 1206 1210 1812 2220 F 3.5 (.138) 5.5 (.217) W 8.0 (.315) 12.0 (.480) T2 MAX. 3.5 (.138) 6.5 (.256) 8.4 ± 1.5 (.331 ± .059) 12.4 ± 2 (.488 ± .079) W2 MAX. 14.4 (.567) 18.4 (.724) 7.9 to 10.9 (.311 to .429) 11.9 to 15.4 (.469 to .606) A DIA. 180/330 (7.087/12.992) Series Voltage Range (V) Model Size 0805 1206 1210 1812 2220 AVHT 14 3500 2500 2500 1000 1000 17 3500 2500 2500 1000 1000 20 to 40 2500 2500 1000 1000 Packaging Quantities

3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Soldering Recommendations for SMD Components Popular soldering techniques used for surface mounted components are Wave and Infrared Reflow processes. Both processes can be performed with Pb-containing or Pb-free solders. The terminations for these soldering techniques are NiSn Barrier Type End Terminations. End Termination Designation Recommended and Suitable for RoHS Compliant NiSn End Termination AVHT Series...Ni Pb-containing and Pb-free soldering Yes Wave Soldering This process is generally associated with discrete components mounted on the underside of printed circuit boards, or for large top-side components with bottom-side mounting tabs to be attached, such as the frames of transformers, relays, connectors, etc. SMD varistors to be wave soldered are first glued to the circuit board, usually with an epoxy adhesive. When all components on the PCB have been positioned and an appropriate amount of time is allowed for adhesive curing, the completed assembly is then placed on a conveyor and run through a single, double wave process. Infrared Reflow Soldering These reflow processes are typically associated with top-side component placement. This technique utilizes a mixture of adhesive and solder compounds (and sometimes fluxes) that are blended into a paste. The paste is then screened onto PCB soldering pads specifi- cally designed to accept a particular sized SMD component. The recommended solder paste wet layer thickness is 100 to 300 µm. Once the circuit board is fully populated with SMD components, it is placed in a reflow environment, where the paste is heated to slightly above its eutectic temperature. When the solder paste reflows, the SMD components are attached to the solder pads. Solder Fluxes Solder fluxes are generally applied to populated circuit boards to keep oxides from forming during the heating process and to facilitate the flowing of the solder. Solder fluxes can be either a part of the solder paste compound or separate materials, usually fluids. Recommended fluxes are:

  • non-activated (R) fluxes, whenever possible
  • mildly activated (RMA) fluxes of class L3CN
  • class ORLO Activated (RA), water soluble or strong acidic fluxes with a chlorine content > 0.2 wt. % are NOT RECOMMENDED. The use of such fluxes could create high leakage current paths along the body of the varistor components. When a flux is applied prior to wave soldering, it is important to completely dry any residual flux solvents prior to the soldering process. Thermal Shock To avoid the possibility of generating stresses in the varistor chip due to thermal shock, a preheat stage to within 100 °C of the peak sol- dering process temperature is recommended. Additionally, SMD varistors should not be subjected to a temperature gradient greater than 4 °C/sec., with an ideal gradient being 2 °C/sec. Peak temperatures should be controlled. Wave and Reflow soldering conditions for SMD varistors with Pb-containing solders are shown on the next page in Fig. 1 and 2 respectively, while Wave and Reflow soldering conditions for SMD varistors with Pb-free solders are shown in Fig. 1 and 3. Whenever several different types of SMD components are being soldered, each having a specific soldering profile, the soldering profile with the least heat and the minimum amount of heating time is recommended. Once soldering has been completed, it is necessary to minimize the possibility of thermal shock by allowing the hot PCB to cool to less than 50 °C before cleaning.

3312 - 2 mm SMD Trimming Potentiometer 3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Soldering Recommendations for SMD Components (Continued) Inspection Criteria When Wave or Infrared Reflow processes are used, the inspection criteria to determine acceptable solder joints will depend on several key variables, principally termination material process profiles. Pb-containing Wave and IR Reflow Soldering Typical “before” and “after” soldering results for NiSn Barrier Type End Terminations can be seen in Fig. 4. NiSn Barrier Type varistors form a reliable electrical contact and metallurgical bond between the end terminations and the solder pads. The bond between these two metallic surfaces is exceptionally strong and has been tested by both vertical pull and lateral (horizontal) push tests. The results exceed established industry standards for adhesion. NiSn End Terminations NiSn End Terminations Fig. 4 Soldering Criteria for Wave and IR Reflow Pb-containing Soldering Fig. 5 Soldering Criteria for Wave and IR Reflow Pb-free Soldering NiSn End Terminations NiSn End Terminations Fig. 4 Soldering Criteria for Wave and IR Reflow Pb-containing Soldering Fig. 5 Soldering Criteria for Wave and IR Reflow Pb-free Soldering Pb-free Wave and IR Reflow Soldering Solder forms a metallurgical junction with the entire volume of the end termination, i.e., it diffuses from pad to end termination across the inner side, forming a “mirror” or “negative meniscus. The height of the solder penetration can be clearly seen on the end termination and is always 30 % higher than the chip height. Since barrier type terminations on Bourns® chips do not require the use of sometimes problematic nickel and tin-alloy electroplating processes, these varistors are truly considered environmentally friendly.

3312 - 2 mm SMD Trimming Potentiometer 3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Soldering Recommendations for SMD Components (Continued) Rework Criteria - Soldering Iron Unless absolutely necessary, the use of soldering irons is NOT recommended for reworking varistor chips. If no other means of rework is available, the following criteria must be strictly followed:

  • Do not allow the tip of the iron to directly contact the top of the chip
  • Do not exceed the following soldering iron specifications: Storage Conditions SMD varistors should be used within 1 year of purchase to avoid possible soldering problems caused by oxidized terminals. The storage environment should be controlled, with humidity less than 40 % and temperature between -25 and +45 °C. Varistor chips should always be stored in their original packaged unit. When varistor chips have been in storage for more than 1 year, and when there is evidence of solderability difficulties, Bourns can “refresh” the terminations to eliminate these problems. Solder Test and Retained Samples Reflow soldering test based on J-STD-020D.1 and soldering test by dipping based on IEC 60068- 2 for Pb-free solders are performed on each production lot as shown in the following chart. Test results and accompanying samples are retained for a minimum of two (2) years. The solderability of a specific lot can be checked at any time within this period, should a customer require this information. Test Resistance to Flux Solderability Static Leaching (Simula- tion of Reflow Soldering) Dynamic Leaching (Simu- lation of Wave Soldering) Soldering method Dipping Dipping Dipping Dipping with Agitation Flux L3CN, ORL0 L3CN, ORL0, R L3CN, ORL0, R L3CN, ORL0, R Pb Solder 62Sn / 36Pb / 2Ag Pb Soldering Temperature (°C) 235 ± 5 235 ± 5 260 ± 5 235 ± 5 Pb-Free Solder Sn96 / Cu0,4-0,8 / 3-4Ag Pb-Free Soldering Temperature (°C) 250 ± 5 250 ± 5 280 ± 5 250 ± 5 Soldering Time (sec.) 2 210 10 > 15 Burn-in Conditions Vdcmax, 48 hours - - - Acceptance Criterion dVn < 5 %, idc must stay unchanged > 95 % of end termination must be covered by solder > 95 % of end termination must be intact and covered by solder > 95 % of end termination must be intact and covered by solder

3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Reliability - Lifetime Pb-free Wave and IR Reflow Soldering In general, reliability is the ability of a component to perform and maintain its functions in routine circumstances, as well as in hostile or unexpected circumstances. The Mean life of the AV series is a function of:

  • Factor of Applied Voltage
  • Ambient Temperature Mean life is closely related to Failure rate (formula). Mean life (ML) is the arithmetic mean (average) time to failure of a component. Failure rate is the frequency with which an engineered system or component fails, expressed, for example, in failures per hour. Failure rate is usually time dependent, and an intuitive corollary is that the rate changes over time versus the expected life cycle of a system. Failure rate formula - calculation 109 Λ = ML [h] [fit] FAV - Factor of Applied Voltage Vapl FAV = Vmax Ta (°C) AVHT Series Mean Life on Arrhenius Model Mean Life (ML) 120 100 80 60 40 20 104 105 106 107 108 1000 Years 100

CDDFN5-0504N - TVS/Steering Diode Array Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. AVHT Series - High Temperature Automotive Grade Varistors Reliability Testing Procedures Varistor test procedures comply with CECC 42200, IEC 1051-1/2 and AEC-Q200. Test results are available upon customer request. Special tests can be performed upon customer request. Reliability Parameter Test Tested According to Condition to be Satisfied after Testing AC/DC Bias Reliability AC/DC Life Test CECC 42200, Test 4.20 or IEC 1051-1, Test 4.20, AEC-Q200 Test 8 - 1000 h at UCT |δVn (1 mA)| < 10 % Pulse Current Capability Imax 8/20 µs CECC 42200, Test C 2.1 or IEC 1051-1, Test 4.5 10 pulses in the same direction at 2 pulses per minute at maximum peak current for 10 pulses |δVn (1 mA)| < 10 % no visible damage Pulse Energy Capability Wmax 10/1000 µs CECC 42200, Test C 2.1 or IEC 1051-1, Test 4.5 10 pulses in the same direction at 1 pulse every 2 minutes at maximum peak current for 10 pulses |δVn (1 mA)| < 10 % no visible damage WLD Capability WLD x 10 ISO 7637, Test pulse 5, 10 pulses at rate of 1 per minute |δVn (1 mA)| < 15 % no visible damage Vjump Capability Vjump 5 min. Increase of supply voltage to V ≥ Vjump for 1 minute |δVn (1 mA)| < 15 % no visible damage Environmental and Storage Reliability Climatic Sequence CECC 42200, Test 4.16 or IEC 1051-1, Test 4.17 a) Dry heat, 16h, UCT, Test Ba, IEC 68-2-2 b) Damp heat, cyclic, the first cycle: 55 °C, 93 % RH, 24 h, Test Db 68-2-4 c) Cold, LCT, 2 h, Test Aa, IEC 68-2-1 d) Damp heat cyclic, remaining 5 cycles: 55 °C, 93 % RH, 24 h/cycle, Test Bd, IEC 68-2-30 |δVn (1 mA)| < 10 % Thermal Shock CECC 42200, Test 4.12, Test Na, IEC 68-2-14, AEC-Q200 Test 16, 5 |δVn (1 mA)| < 10 % no visible damage Steady State Damp Heat CECC 42200, Test 4.17, Test Ca, IEC 68-2-3, AEC-Q200 Test 6, 56 days, 40 °C, 93 % RH, AEC-Q200 Test 7: Bias, Rh, T all at 85. |δVn (1 mA)| < 10 % Storage Test IEC 68-2-2, Test Ba, AEC-Q200 Test 3, 1000 h at maximum storage temperature |δVn (1 mA)| < 5 % Continued on Next Page

3312 - 2 mm SMD Trimming Potentiometer Reliability Testing Procedures (Continued) Reliability Parameter Test Tested According to Condition to be Satisfied after Testing Mechanical Reliability Solderability CECC 42200, Test 4.10.1, Test Ta, IEC 68-2-20 solder bath and reflow method Solderable at shipment and after 2 years of storage, criteria: >95% must be covered by solder for reflow meniscus Resistance to Soldering Heat CECC 42200, Test 4.10.2, Test Tb, IEC 68-2-20 solder bath nad reflow method |δVn (1 mA)| < 5 % Terminal Strength JIS-C-6429, App. 1, 18N for 60 sec. - same for AEC-Q200 Test 22 No visual damage Board Flex JIS-C-6429, App. 2, 2 mm min. AEC-Q200 test 21 - Board flex: 2 mm flex min. |δVn (1 mA)| < 2 % No visible damage Vibration CECC 42200, Test 4.15, Test Fc, IEC 68-2-6, AEC-Q200 Test 14 Frequency range 10 to 55 Hz (AEC: 10-2000 Hz) Amplitude 0.75 m/s2 or 98 m/s2 (AEC: 5 g for 20 minutes) To- tal duration 6 h (3x2 h) (AEC: 12 cycles each of 3 directions) Waveshape - half sine |δVn (1 mA)| < 2 % No visible damage Mechanical Shock CECC 42200, Test 4.14, Test Ea, IEC 68-2-27, AEC-Q200 Test 13. Acceleration = 490 m/s2 (AEC: MIL-STD-202-Method 213), Pulse duration = 11 ms, Waveshape - half sine; Number of shocks = 3x6 |δVn (1 mA)| < 10 % No visible damage Electrical Transient Conduction ISO-7637-1 Pulses AEC-Q200 Test 30: Test pulses 1 to 3. Also other pulses - freestyle. |δVn (1 mA)| < 10 % No visible damage 3312 - 2 mm SMD Trimming Potentiometer AVHT Series - High Temperature Automotive Grade Varistors Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf.

applied to the component under continuous operation conditions at +25 °C under continuous operating conditions at +25 °C characteristics of the system are referred; Vrms = 1.1 x V temperature Protection Level when passing an 8/20 µs class current pulse per minute for the 8/20 µs pulse Vc/Vapp, where (Vapp = Vrms or Vdc) of the rated battery voltage. The circuit power supply may be subjected to a temporary overvoltage condition due to the voltage regulation failing or it may be deliberately generated when it becomes necessary to boost start the car. Transient Energy current, with rated AC voltage or rated DC voltage also applied, without causing device failure decaying positive voltage which occurs in the event of a battery disconnect while the alter- nator is still generating charging current with other loads remaining on the alternator circuit at the time of battery disconnect. Transient Current voltage also applied, without causing device failure Power Dissipation within a specified isolated time period, without causing device failure at 25 °C described by I = k V exp(a), where: - k is a device constant, - I1 < I < In and - a log (I1/In)/log(V1/Vn) = 1/log (V1/Vn), where: - Ir is reference current (1 mA) and Vn is varistor voltage - I1 = 10 In, V1 is the voltage measured at I1 Coefficient between the varistor terminations and any conducting mounting surface as defined by the temperature limits of its climatic category ambient temperatures for which a varistor has been designed to operate continuously. DHD = Dump Heat Test Duration CDDFN5-0504N - TVS/Steering Diode Array Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. AVHT Series - High Temperature Automotive Grade Varistors Terminology REV. A 01/20

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