WF08H WALSIN | Alldatasheet
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Page 1 of 7 ASC_WFxxH_J_Auto_V03 Feb - 2016 WF10H, WF12H, WF08H, WF06H, WF04H Thick film high precision chip resistors Size 1210, 1206, 0805, 0603, 0402 ( Automotive ) *Contents in this sheet are subject to change without prior notice.
Page 2 of 7 ASC_WFxxH_J_Auto_V03 Feb - 2016 FEATURE 1. Automotive grade AEC Q-200 compliant 2. 100% CCD inspection 3. RoHS compliant and Lead free products 4. High precision ±0.5%, ±0.1% APPLICATION
- Automotive application
- Consumer electrical equipment
- EDP, Computer application
- Telecom application
DESCRIPTION
The resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are added at each end and connected by a resistive paste that is applied to the top surface of the substrate. The composition of the paste is adjusted to give the approximate resistance required and the value is trimmed to nominated value within tolerance which controlled by laser trimming of this resistive layer. The resistive layer is covered with a protective coat. Finally, the two external end terminations are added. For ease of soldering the outer layer of these end terminations is a Tin (lead free) alloy. Fig 1. Construction of Chip-R
Page 3 of 7 ASC_WFxxH_J_Auto_V03 Feb - 2016 QUICK REFERENCE DATA Item General Specification Series No. WF10H WF12H WF08H WF06H WF04H Size code 1210 (3225) 1206 (3216) 0805 (2125) 0603 (1608) 0402 (1005) Resistance Range 47 Ω ~ 1M Ω ( E96+E24 series) Resistance Tolerance ±0.5%, ±0.1% TCR (ppm/ °C) 10 Ω≤ R ≤ 1M Ω ≤ ± 100 ppm/ °C Max. dissipation at T amb =70 °C 1/3 W 1/4W 1/8 W 1/10 W 1/16W Max. Operation Voltage 200V 200V 150V 50V 50V Max. overload voltage 400V 400V 300V 100V 100V Climatic category 55/155/56 Note : 1. This is the maximum voltage that may be continuously supplied to the resistor element, see “IEC publication 60115-8” 2. Max. Operation Voltage : So called RCWV (Rated Continuous Working Voltage) is determined by Value Resistance Power Rated RCWV ×= or Max. RCWV listed above, whichever is lower. 3. Non E96 series resistance upon requested. DIMENSIONS(unit : mm) Part No WF10H WF12H WF08H WF06H WF04H MARKING /circle6 3-digits marking for 0603 size WFxxH has same marking rule as WRxx ±1%. /circle6 4-digits marking for 1210, 1206, 0805 size Each resistor is marked with a four digits code on the protective coating to designate the nominal resistance value. For values below 97 Ω 6 the R is used as a digit. For values of 100 Ω or greater, the first 3 digits are significant, the fourth digit indicates the number of multiple to follow. Example RESISTANCE 10 Ω 12 Ω 100 Ω 6800 Ω 47000 Ω 4-digits marking 10R0 12R0 1000 6801 4702 /circle6 No marking code for 0402 size
±0.5%, ±0.1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”. Figure 2. Maximum dissipation in percentage of rated power condition for no leaching is 260 °C for 30 seconds. /square6 10000pcs per 7” reel for 0402.
Page 5 of 7 ASC_WFxxH_J_Auto_V03 Feb - 2016 TEST AND REQUIREMENTS Essentially all tests are carried out according to the schedule of IEC publication 115-8, category LCT /UCT /56(rated temperature range : Lower C ategory Temperature, U pper C ategory Temperature; damp heat, long term, 56 days). The testing also meets the requirements specified by EIA, EIAJ and JIS. The tests are carried out in accordance with IEC publication 68, "Recommended basic climatic and mechanical robustness testing procedure for electronic components" and under standard atmospheric conditions according to IEC 60068-1, subclause 5.3. Unless otherwise specified, the following value supplied : Temperature: 15 °C to 35 °C. Relative humidity: 45% to 75%. Air pressure: 86kPa to 106 kPa (860 mbar to 1060 mbar). All soldering tests are performed with midly activated flux. REQUIREMENT TEST PROCEDURE / TEST METHOD Resistor
Electrical Characteristics
JISC5201-1: 1998 Clause 4.8 - DC resistance values measurement - Temperature Coefficient of Resistance (T.C.R) Natural resistance change per change in degree centigrade. ( ) 12 1 12 10 ×− ttR RR (ppm/ °C) t 1 : 20° C+5° C-1° C R 1 : Resistance at reference temperature R 2 : Resistance at test temperature Within the specified tolerance Refer to “QUICK REFERENCE DATA” Resistance to soldering heat(R.S.H) MIL-STD-202 method 210 Un-mounted chips completely immersed for 10 ±1second in a SAC solder bath at 270 ℃±5ºC ΔR/R max. ±(1.0%+0.05 Ω ) no visible damage Solderability J-STD-002 a) Bake the sample for 155 ℃ dwell time 4hrs/ solder dipping 235 ℃/ 5sec. b) Steam the sample dwell time 1 hour/ solder dipping 260 ℃/ 7sec. 95% coverage min., good tinning and no visible damage Temperature cycling JESD22 Method JA-104 1000 cycles, -55℃ ~ +155 ℃, dwell time 5~10min ΔR/R max. ±(1.0%+0.05 Ω ) No visible damage Moisture Resistance MIL- STD-202 method 106 65 ±2°C, 80~100% RH, 10 cycles, 24 hours/ cycle ΔR/R max. ±(1.0%+0.05 Ω ) No visible damage Bias Humidity MIL-STD-202 method 103 1000+48/-0 hours; 85 °C, 85% RH, 10% of operation power ΔR/R max. ±(2.0%+0.10 Ω ) No visible damage Operational Life MIL-STD-202 method 108 1000+48/-0 hours; 35% of operation power, 125 ±2°C ΔR/R max. ±(2.0%+0.1Ω ) No visible damage
Page 6 of 7 ASC_WFxxH_J_Auto_V03 Feb - 2016 REQUIREMENT TEST PROCEDURE / TEST METHOD Resistor High Temperature Exposure MIL-STD-202 Method 108 1000+48/-0 hours; without load in a temperature chamber controlled 155 ±3°C ΔR/R max. ±(2.0%+0.10 Ω ) No visible damage Board Flex AEC-Q200-005 Resistors mounted on a 90mm glass epoxy resin PCB(FR4),bending once 2mm for 10sec. ΔR/R max. ±(1.0%+0.05 Ω ) No visible damage Terminal strength AEC-Q200-006 Pressurizing force: 1Kg, Test time: 60±1sec. No remar kable damage or removal of the terminations Thermal shock MIL-STD-202 method 107 Test –55 to 155℃/ dwell time 15min/ Max transfer time 20sec 300cycles ΔR/R max. ±(1.0%+0.05 Ω ) No visible damage ESD AEC-Q200-002 No visible damage Short Time Overload JISC5201-1: 1998 Clause 4.13 2.5 times RCWV or max. overload voltage, for 5seconds ΔR/R max. ±(2.0%+0.10 Ω ) No visible damage Load life in Humidity JISC5201-1: 1998 Clause 4.24 1000 +48/-0 hours, loaded with RCWV or Vmax in humidity chamber controller at 40 °C ±2°C and 90~95% relative humidity, 1.5hours on and 0.5 hours off ΔR/R max. ±(2%+0.10 Ω ) No visible damage Load life (endurance) JISC5201-1: 1998 Clause 4.25 1000 +48/-0 hours, loaded with RCWV or Vmax in chamber controller 70 ±2ºC, 1.5 hours on and 0.5 hours off ΔR/R max. ±(2%+0.10 Ω ) No visible damage
Page 7 of 7 ASC_WFxxH_J_Auto_V03 Feb - 2016 PACKAGING Paper Tape specifications (unit :mm) Series No. A B W F E Series No. P1 P0 Φ D T WF04H 2.00 ±0.10 4.00 ±0.10 1 . 0 0 . 050 . 1+ Φ 0.40 ±0.05 Reel dimensions Symbol A B C D Taping quantity - Chip resistors 5,000 pcs/reel for WF10H, WF12H, WF08H, WF06H. - Chip resistors 10,000 pcs/reel for WF04H.