WR02X_TR WALSIN | Alldatasheet
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Page 1 of 7 ASC_WR02X_TR_V02 Jul - 2013 WR02X(W) RoHS compliant and Lead content 100ppm General purpose chip resistors Size 0201 *Contents in this sheet are subject to change without prior notice.
Page 2 of 7 ASC_WR02X_TR_V02 Jul - 2013 FEATURE 1. Small size and light weight 2. High reliability and stability 3. Reduced size of final equipment 4. Suitable for high density print circuit board assembly 5. Higher component and equipment reliability 6. RoHS compliant and Lead free product APPLICATION 1. Mobile phone 2. PDA 3. Camcorders 4. Palmtop computers 5. Hybrid module
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 nominated value within tolerance which controlled by laser trimming of this resistive layer. The resistive layer is covered with a BLACK 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 WR02X
Page 3 of 7 ASC_WR02X_TR_V02 Jul - 2013 QUICK REFERENCE DATA Item General Specification Series No. WR02X(W) Size code 0201(0603) Resistance Range 1 Ω ~10M Ω ( ±5% tolerance ), Jumper 1Ω ~1M Ω ( ±1% tolerance ) Resistance Tolerance ±1% E96/E24 ±5% E24 TCR (ppm/ °C) 100Ω - 10M Ω , ±200 10 Ω - 97.6 Ω , +600 ~ 0 Max. dissipation @ T amb =70 °C 1/20 W Max. Operation Voltage (DC or RMS) 25V Max. Overload Voltage (DC or RMS) 50V Climatic category (IEC 60068) 55/125/56 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. DIMENSION(unit : mm) Type WR02X(W) L 0.60 ± 0.03 W 0.30 ± 0.03 T 0.23 ± 0.03 Tb 0.15 ± 0.05 Tt 0.10 ± 0.05 MARKING WR02X(W) has no marking. P rotective coat R esistive layer E nd termination Ceramic S ubstrate T Tb Tt T W L
Figure 2. Maximum dissipation in percentage of rated power 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. discrete components on the reverse (mixed PCBs). any damage are given in Fig 3.
Page 5 of 7 ASC_WR02X_TR_V02 Jul - 2013 CATALOGUE NUMBERS The resistors have a catalogue number starting with : WR02 X 472_ J A R Size code WR02 : 0201 Type code X : Normal W : 1% For <10 Ω and >1M Ω Resistance code 5%, E24: 2 significant digits followed by no. of zeros and a blank. 100 Ω = 101_ 10K Ω = 103_ 1%, E24+E96: 3 significant digits followed by no. of zeros 100Ω =1000 37.4K Ω =3742 Tolerance J : ±5% F : ±1% P : Jumper Packaging code A : 7” Reeled taping (15Kpcs/Reel) T : 7” Reeled taping (10Kpcs/Reel) RoHS code R = Lead free (< 100 ppm ) LEAD content: below 100ppm with reference to IEC62321, determination of LEAD by ICP-AES 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 2second application of a voltage 2.5 times RCWV or the maximum overload voltage specified in the above list, whichever is less. ΔR/R max. ±(1%+0.05Ω ) <50m Ω
Page 6 of 7 ASC_WR02X_TR_V02 Jul - 2013 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 ΔR/R max. ±(1%+0.05 Ω) no visible damage <50m Ω Solderability Clause 4.17 Un-mounted chips completely immersed for 2±0.8second 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 +125 °C ±3°C, 2~3 minutes at 20° C+5° C- 1° C, total 5 continuous cycles ΔR/R max. ±(1%+0.05 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, ΔR/R max. ±(5%+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 ΔR/R max. ±(5%+0.10 Ω ) < 50m Ω High temperature Clause 4.25 125’C x 1000hrs, no load ΔR/R max. ±(5%+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. No visual damaged, ΔR/R max. ±(1%+0.05 Ω ) < 50m Ω Adhesion Clause 4.32 Pressurizing force: 3N, Test time: 10 ±1sec. No remarkable damage or removal of the terminations
Page 7 of 7 ASC_WR02X_TR_V02 Jul - 2013 PACKAGING Paper Tape specifications (unit :mm) Series No. A B W F E Series No. P1 P0 Φ D T 0 . 050 . 1+ Φ 0.45 ±0.05 Reel dimensions Symbol A B C D (unit : mm) Φ 180.0+0/-1.5 Φ 60.0 ±1.0 Φ 60.0+1/-0 13.0 ±0.2 9.0+1/-0 Taping quantity and Tape material - Chip resistors 15,000 pcs/reel, Paper tape.