WR08X2R7JTL

Approval sheet WR12, WR08, WR06, WR04 ±1%, ±5% Thick Film General Purpose Chip Resistors Size 1206, 0805, 0603, 0402 *Contents in this sheet are subject to change without prior notice. Page 1 of 10 ASC_WR_V23 APR.- 2015 Approval sheet FEATURE 1. High reliability and stability 2. Reduced size of final equipment 3. Lower assembly costs 4. Higher component and equipment reliability 5. RoHS compliant and Lead free products 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 within tolerance by laser cutting 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 2 of 10 ASC_WR_V23 APR.- 2015 Approval sheet QUICK REFERENCE DATA Item General Specification Series No. WR12 WR08 WR06 WR04 Size code 1206(3216) 0805(2012) 0603(1608) 0402(1005) Resistance Range 1Ω~10MΩ (±5% tolerance), Jumper 1Ω~10MΩ (±1% tolerance), Resistance Tolerance ±1% ±5% ±1% ±5% ±1% ±5% ±1% ±5% E96/E24 E24 E96/E24 E24 E96/E24 E24 E96/E24 E24 TCR (ppm/°C) 10MΩ ≥R＞10Ω ≤ ± 100 R≤10Ω -200~+400 Max. dissipation @ Tamb=70°C 1/4 W 1/8 W 1/10 W 1/16 W Max. Operation Voltage (DC or RMS) 200V 150V 75V 50V Max. Overload Voltage (DC or RMS) 400V 300V 150V 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 RCWV = Rated Power × Resistance Value or Max. RCWV listed above, whichever is lower. 3. The resistance of Jumper is defined 1MΩ B Jumper =000_ D : 7'' reel 20Kpcs only for 0402 (“_” means a blank) ±1%, E24+E96: 3 significant digits followed by no. of zeros 102Ω =1020 37.4KΩ =3742 : 7” Reeled taping : Bulk A : 7" reel 15Kpcs only for 0402 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 Page 6 of 10 : 5000pcs per poly-bag ASC_WR_V23 APR.- 2015 Approval sheet WR04: 1. reel. 2. Reeled tape packaging : 8mm width paper taping 10,000pcs per 7” reel, 20,000pcs per 10” reel. 70,000pcs per 13” Bulk packaging Page 7 of 10 : 10,000pcs per poly-bag ASC_WR_V23 APR.- 2015 Approval sheet 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 Category Temperature, Upper Category 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. TEST REQUIREMENT PROCEDURE / TEST METHOD 0Ω Ω Resistor Electrical - DC resistance values measurement Within the specified tolerance Characteristics - Temperature Coefficient of Resistance (T.C.R) Refer to “QUICK REFERENCE Natural resistance change per change in degree centigrade. DATA” R2 − R1 × 106 R1 (t2 − t1 ) JISC5201-1: 1998 Clause 4.8 (ppm/°C) t1 : 20°C+5°C-1°C; t 2