WR10 WALSIN | Alldatasheet
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Page 1 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 WR10, WR12, WR08, WR06, WR04, General purpose chip resistors RoHS exemption free lead free Size 1210, 1206, 0805, 0603, 0402, *Contents in this sheet are subject to change without prior notice.
Page 2 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 FEATURE 1. High reliability and stability 2. Reduced size of final equipment 3. Lower assembly costs 4. Higher component and equipment reliability 5. RoHS exemption free and Lead free products APPLICATION
- Consumer electrical equipment
- Automotive application
- EDP, Computer application
- Telecom application
DESCRIPTION
The LEAD FREE resistors are constructed in a high grade ceramic body (aluminum oxide). Internal metal electrodes are added at each end and connected by a LEAD FREE 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 within tolerance by laser cutting of this resistive layer. The resistive layer is covered with a protective coat. For all series, Overcoat is water blue color. 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 a Chip-R
Page 3 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 QUICK REFERENCE DATA Item General Specification Series No. WR10 WR12 WR08 WR06 WR04 Size code 1210(3225) 1206(3216) 0805(2012) 0603(1608) 0402(10 05) Resistance Range 1Ω ~10M Ω (±5% tolerance), 1Ω ~ 10MΩ (±1% tolerance), Jumper Resistance Tolerance ±1% E24/E96 ±5% E24 ±1% E24/E96 ±5% E24 ±1% E96/E24 ±5% E24 ±1% E96/E24 ±5% E24 ±1% E96/E24 ±5% E24 TCR (ppm/ °C) R ≥1M Ω 1M Ω ＞R ＞10 Ω R ≤10 Ω ≤ ± 200 ≤ ± 100 -300/+500 ≤ ± 200 ≤ ± 200 -300/+500 ≤ ± 200 ≤ ± 100 -300/+500 ≤ ± 200 ≤ ± 200 -300/+500 ≤ ± 200 ≤ ± 100 -300/+500 ≤ ± 200 ≤ ± 200 -300/+500 ≤ ± 200 ≤ ± 100 -300/+500 ≤ ± 200 ≤ ± 200 -300/+500 ≤ ± 300 ≤ ± 100 -300/+500 ≤ ± 300 ≤ ± 200 -300/+500 Max. dissipation @ T amb =70 °C 1/3 W 1/4 W 1/8 W 1/10 W 1/16 W Max. Operation Voltage (DC or RMS) 200V 200V 150V 50V 50V Max. Overload Voltage (DC or RMS) 400V 400V 300V 100V 100V Climatic category (IEC 60068) 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. 4. The resistance of Jumper is defined as max. 0.05Ω . DIMENSIONS (unit : mm) WR10 WR12 WR08 WR06 WR04
Page 4 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 MARKING All series are defined as no marking ! FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5%, and E96 series for resistors with a tolerance of ±1%. The values of the E24/E96 series are in accordance with “IEC publication 60063” De-rating The power that the resistor can dissipate depends on the operating temperature; see Fig.2.1 Figure 2.1 Maximum dissipation in percentage of rated power as a function of the ambient temperature for WR10X, WR12X WR08X, WR06X, WR04X MOUNTING Due to their rectangular shapes and small tolerances, Surface Mountable Resistors are suitable for handling by automatic placement systems. Chip placement can be on ceramic substrates and printed-circuit boards (PCBs). Electrical connection to the circuit is by individual soldering condition. The end terminations guarantee a reliable contact.
Page 5 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 SOLDERING CONDITION The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260 °C for 10 seconds. Therefore, it is possible to mount Surface Mount Resistors on one side of a PCB and other discrete components on the reverse (mixed PCBs). Surface Mount Resistors are tested for solderability at 235°C during 2 seconds. The test condition for no leaching is 260 °C for 30 seconds. Typical examples of soldering processes that provide reliable joints without any damage are given in Fig 3. Fig 3. Infrared soldering profile for Chip Resistors CATALOGUE NUMBERS The resistors have a catalogue number starting with. WR12 X 472_ J T R Size code WR10 : 1210 WR12 : 1206 WR08 : 0805 WR06 : 0603 WR04: 0402 Type code X : 5% : 1 Ω ~10M Ω 1% : 10 Ω ~1M Ω Resistance code 5%, E24 : 2 significant digits followed by no. of zeros and a blank 4.7 Ω =4R7_ 10 Ω =100_ 220 Ω =221_ Jumper =000_ (“_” means a blank) 1%, E24/E96: 3 significant digits followed by no. of zeros 102 Ω =1020 37.4K Ω =3742 Tolerance F : ±1% J : ±5% P : Jumper Packaging code T : 7” Reeled taping Q : 10” Reeled taping G : 13” Reeled taping B : Bulk RoHS code R = Lead free (< 100 ppm ) LEAD content: below 100ppm with reference to IEC62321, determination of LEAD by ICP-AES WR10, WR12,WR08,WR06: 1. Reeled tape packaging : 8mm width paper taping 5000pcs per 7” reel, 10kpcs per 10” reel, 20kpcs per 13” reel. 2. Bulk packaging : 5000pcs per poly-bag WR04: 1. Reeled tape packaging : 8mm width paper taping 10,000pcs per reel, 2. Bulk packaging : 10,000pcs per poly-bag
Page 6 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 TEST AND REQUIREMENTS(JIS C 5201-1 : 1998) 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 0ΩΩ ΩΩ DC resistance Clause 4.5 DC resistance values measured at the test voltages specified below : <10K Ω @3V, <100K Ω @10V, <1M Ω @25V, <10M Ω @30V Within the specified tolerance <50m Ω Temperature Coefficient of Resistance(T.C.R) Clause 4.8 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 Refer to “QUICK REFERENCE DATA” N/a Short time overload (S.T.O.L) Clause 4.13 Permanent resistance change after a 5second application of a voltage 2.5 times RCWV or the maximum overload voltage specified in the above list, whichever is less. 1% tol.: ΔR/R max. ±(1%+0.10 Ω ) 5% tol.: ΔR/R max. ±(2%+0.10 Ω ) <50m Ω Resistance to soldering heat(R.S.H) Clause 4.18 Un-mounted chips completely immersed for 10 ±1second in a SAC solder bath at 260 ℃±5ºC 1% tol.: ΔR/R max. ±(0.5%+0.10 Ω ) 5% tol.: ΔR/R max. ±(1%+0.10 Ω ) <50m Ω Solderability Clause 4.17 Un-mounted chips completely immersed for 2±0.5 second in a SAC solder bath at 235℃±5 ℃ 95% coverage min., good tinning and no visible damage Temperature cycling Clause 4.19 30 minutes at -55 °C ±3°C, 2~3 minutes at 20° C+5° C-1° C, 30 minutes at +155 °C ±3°C, 2~3 minutes at 20° C+5° C-1° C, total 5 continuous cycles 1% tol.: ΔR/R max. ±(0.5%+0.10 Ω ) 5% tol.: ΔR/R max. ±(1%+0.10 Ω ) <50m Ω Damp Heat (Load life in humidity) 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 1% tol.: ΔR/R max. ±(1%+0.10 Ω ) 5% tol.: ΔR/R max. ±(2%+0.10 Ω ) <50m Ω Load Life(Endurance) Clause 4.25 1000 +48/-0 hours; loaded with RCWV or V max in chamber controller 70 ±2ºC, 1.5 hours on and 0.5 hours off 1% tol.: ΔR/R max. ±(1%+0.10 Ω ) 5% tol.: ΔR/R max. ±(2%+0.10 Ω ) <50m Ω Bending strength Clause 4.33 Resistors mounted on a 90mm glass epoxy resin PCB(FR4), bending once 3mm for 10sec, 5mm for WR04 1% tol.: ΔR/R max. ±(0.5%+0.10 Ω ) 5 tol.: ΔR/R max. ±(1%+0.10 Ω ) <50m Ω Adhesion Clause 4.32 Pressurizing force: 5N, Test time: 10 ±1sec. No remarkable damage or removal of the terminations
Page 7 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 TEST CONDITION FOR JUMPER (0 ΩΩ ΩΩ ) Item WR10 WR12 WR08 WR06 WR04 Power Rating At 70 °C 1/3W 1/4W 1/8W 1/10W 1/16W Resistance MAX.50m Ω Rated Current 2.5A 2A 1.5A 1A 1A Peak Current 6A 5A 3.5A 3A 1.5A Operating Temperature -55~155 °C PACKAGING Paper Tape specifications (unit :mm) Series No. A B W F E WR10 3.60 ±0.20 3.00 ±0.20 WR12 3.60 ±0.20 2.00 ±0.20 WR08 2.40 ±0.20 1.65 ±0.20 WR06 1.90 ±0.20 1.10 ±0.20 WR04 1.20 ±0.10 0.70 ±0.10 Series No. P1 P0 Φ D T WR10 WR12 / WR08 Max. 1.0 WR06 4.00 ±0.10 0.65 ±0.05 WR04 2.00 ±0.10 4.00 ±0.10 1 . 0 0 . 050 . 1+ Φ 0.40 ±0.05
Page 8 of 8 ASC_WR_TR (Pb<100ppm)_V07 Nov - 2014 7” Reel dimensions Symbol A B C D