SM12T1G UMW | Alldatasheet

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Technical content

These dual monolithic silicon surge protection diodes are designed for applications requiring transient overvoltage protection capability. They are intended for use in voltage and ESD sensitive equipment such as computers, printers, business machines, communication systems, medical equipment and other applications. Their dual junction common anode design protects two separate lines using only one package. These devices are ideal for situations where board space is at a premium.Specification Features:

  • SOT−23 Package Allows Either Two Separate Unidirectional Configurations or a Single Bidirectional Configuration
  • Working Peak Reverse Voltage Range − 5.0 V t o 36 V
  • Peak Power − 300 Watt (8/20 /C0109s)
  • Low Leakage − 1.0/C0109A
  • Flammability Rating UL 94 V−0
  • These are Pb−Free Devices Mechanical Characteristics: CASE: V oid-Free, Transfer-Molded, Thermosetting Plastic Case FINISH: Corrosion Resistant Finish, Easily Solderable MAXIMUM CASE TEMPERATURE FOR SOLDERING PURPOSES: 260°C for 10 Seconds Package Designed for Optimal Automated Board Assembly Small Package Size for High Density Applications PIN 1. CATHODE 2. CATHODE 3. ANODE www.umw-ic.com 1 UTD Semiconductor Co.,Limited MAXIMUM RATINGS Rating Symbol Value Unit Peak Power Dissipation @ 20 /C0109s (Note 1) @ TL ≤ 25°C Ppk 300 W IEC 61000−4−2 (ESD) Air Contact ±15 ±26 kV IEC 61000−4−4 (EFT) 40 A IEC 61000−4−5 (Lightning) 12 A Total Power Dissipation on FR−5 Board (Note 2) @ TA = 25°C Derate above 25°C Thermal Resistance, Junction−to−Ambient °PD° R/C0113JA 225 1.8 556 °mW° mW/°C °C/W Total Power Dissipation on Alumina Substrate (Note 3) @ TA = 25°C Derate above 25°C Thermal Resistance, Junction−to−Ambient °PD R/C0113JA 300 2.4 417 °mW mW/°C °C/W Junction and Storage Temperature Range TJ, Tstg − 55 to +150 °C Lead Solder Temperature − Maximum (10 Second Duration) TL 260 °C Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Non−repetitive current pulse per Figure 3 NOTE: Other voltages may be available upon request UMW SMxxT1G R

ELECTRICAL CHARACTERISTICS

UNIDIRECTIONAL (Circuit tied to Pins 1 and 3 or 2 and 3) Symbol Parameter IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM Working Peak Reverse Voltage IR Maximum Reverse Leakage Current @ VRWM VBR Breakdown Voltage @ IT IT Test Current /C0081VBR Maximum Temperature Coefficient of VBR IF Forward Current VF Forward Voltage @ IF ZZT Maximum Zener Impedance @ IZT IZK Reverse Current ZZK Maximum Zener Impedance @ IZK Uni−Directional IPP IF V I IRIT VRWMVC VBR VF ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted) Device* Device Marking VRWM IR @ VRWM VBR, Breakdown Voltage IT VC @ IPP =

1 Amp

(Note 4) Typical Capacitance (Volts) (pF) (Volts) (/C0109A) Min Max mA (Volts) (Amps) Pin 1 to 3 @ 0 Volts SM05T1G 05M 5 10 6.2 7.3 1.0 9.8 17 225 SM12T1G 12M 12 1.0 13.3 15.75 1.0 19 12 95 SM15T1G 15M 15 1.0 16.7 19.6 1.0 24 10 100 Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. 4. 8/20 /C0109s pulse waveform per Figure 3www.umw-ic.com 2 UTD Semiconductor Co.,Limited UMW SMxxT1G R

TYPICAL COMMON ANODE APPLICATIONS A quad junction common anode design in a SOT−23 package protects four separate lines using only one package. This adds flexibility and creativity to PCB design especially when board space is at a premium. Two simplified examples of surge protection applications are illustrated below. KEYBOARD TERMINAL PRINTER ETC. FUNCTIONAL DECODERI/O A SM05T1G Series GND Computer Interface Protection B C D Microprocessor Protection I/O RAM ROM CLOCK CPU CONTROL BUS ADDRESS BUS DATA BUS GND VGG VDD SM05T1 Series SM05T1G Serieswww.umw-ic.com 4 UTD Semiconductor Co.,Limited UMW SMxxT1G R

Rwww.umw-ic.com 5 UTD Semiconductor Co.,Limited MarkingOr deringinformation Order code Package Baseqty Delivery mode UMW SM05T1G SOT-23 3000 Tapeandreel Marking OutlineDrawing –SOT-23 0.25 A D E1 E 1 2 b e LθD IMENSIONS SYMBOL MILLIMETER INCHES MIN MAX MIN MAX A 0.900 1.150 0.035 0.045 A1 0.000 0.100 0.000 0.004 A2 0.900 1.050 0.035 0.041 D 2.800 3.000 0.110 0.118 b 0.300 0.500 0.012 0.020 E 2.250 2.550 0.089 0.100 E1 1.200 1.400 0.047 0.055 e 0.950BSC 0.037BSC L 0.500 0.675 0.020 0.027 θ 0 8○ 0 8○ UMW SM12T1G 3000 Tapeandreel UMW SM36T1G 3000 Tapeandreel UMW SM15T1G 3000 Tapeandreel UMW SM24T1G 3000 Tapeandreel SOT-23 SOT-23 SOT-23 SOT-23