WW08DR005FTL

Approval sheet WW25D, WW12D, WW08D, WW06D, WW04D 0.5%, 1%, 5% Metal Foil Low Ohm Power Chip Resistor Size 2512, 1206, 0805, 0603, 0402 Halogen Free Sensing Type Anti-Sulfur ASTM B-809 105C 1000hrs Customer : Approval No : Issue Date : Customer Approval : *Contents in this sheet are subject to change without prior notice. Page 1 of 10 WWxxD_V08 OCT 2019 Approval sheet FEATURE 1. Ultra low and stable TCR performance 2. High power rating and compact size 3. High reliability and stability 4. Reduced size of final equipment 5. RoHS exemption free & Lead free 6. ASTM B-809 105C 1000hrs compliant APPLICATION  Power supply  PDA  Digital meter  Computer  Automotives  Battery charger  DC-DC power converter DESCRIPTION The resistors are constructed in a high grade low resistive metal foil which adhere on top of ceramic substrate body. The resistive layer is covered with a protective coat and printed a resistance marking code over it. Finally, the two external end terminations are added. For ease of soldering the outer layer of these end terminations is a Lead free terminations. Fig 1. Construction of 0603/0805/1206 Page 2 of 10 WWxxD_V08 OCT 2019 Approval sheet QUICK REFERENCE DATA General Specification Item Series No. WW25D WW12D WW08D WW06D WW04D Size code 2512 (6432) 1206 (3216) 0805 (2012) 0603 (1608) 0402 (1005) 5% , 1%, Resistance Tolerance 0.5% (only for TC50) 2~450mΩ, 700 mΩ 3~700mΩ 3~500mΩ 5~75mΩ 5 ~ 25 mΩ TCR (ppm/C) 2~9mΩ: ±100 3~9mΩ: ±100 3~9mΩ: ±100 5~9mΩ: 100 5~25mΩ: 100 +25 ~ +125C 10~700mΩ: ±50 10~700mΩ: ±50 10~500mΩ: ±50 10~75mΩ: 50 2W 1W 3/4W 1/2W Resistance Range Max. power at Tamb=70C 1/3W -55 ~ +155C Operation Temperature Note : Max. Operation Current : So called RCWC (Rated Continuous Working Current) is determined by RCWC  Rated Power / Resistance Value listed above. MECHANICAL DATA Type WW25D WW12D WW08D Page 3 of 10 Size (inch) 2512 R-value L (mm) W (mm) H (mm) d (mm) R002 6.4±0.30 3.2±0.30 0.65±0.20 2.8±0.30 R003 6.4±0.30 3.2±0.30 0.65±0.20 2.6±0.30 R004-R009 6.4±0.30 3.2±0.30 0.65±0.20 1.05±0.30 R010-R049 6.4±0.30 3.2±0.30 0.65±0.20 1.05±0.30 R050-R700 6.4±0.30 3.2±0.30 0.65±0.20 1.05±0.30 R003 3.3±0.20 1.7±0.20 0.65±0.20 1.20±0.30 R004-R008 3.3±0.20 1.7±0.20 0.65±0.20 0.68±0.30 R009-R049 3.3±0.20 1.7±0.20 0.65±0.20 0.68±0.30 R050-R700 3.3±0.20 1.7±0.20 0.65±0.20 0.68±0.30 R003 2.10±0.20 1.35±0.20 0.65±0.20 0.65±0.20 R004 2.10±0.20 1.35±0.20 0.65±0.20 0.50±0.20 1206 0805 WWxxD_V08 OCT 2019 Approval sheet WW06D WW04D R005-R007 2.10±0.20 1.35±0.20 0.65±0.20 0.50±0.20 R008-R049 2.10±0.20 1.35±0.20 0.65±0.20 0.50±0.20 R050-R500 2.10±0.20 1.35±0.20 0.65±0.20 0.5±0.20 R005 1.7±0.20 0.9±0.20 0.65±0.20 0.50±0.20 R006-R009 1.7±0.20 0.9±0.20 0.65±0.20 0.40±0.20 R010-R049 1.7±0.20 0.9±0.20 0.65±0.20 0.40±0.20 R050-R100 1.7±0.20 0.9±0.20 0.65±0.20 0.40±0.20 R005-R025 1.0±0.10 0.55±0.10 0.30±0.05 0.23±0.10 0603 0402 RECOMMENDED SOLDER LAND PATTERN Type R-value P (mm) W (mm) D (mm) R002 0.60 3.57 4.35 R003 0.90 3.57 4.20 R004-R009 3.10 3.57 3.10 R010-R700 3.10 3.57 3.10 R003 0.60 1.84 2.10 R004-R008 1.20 1.84 1.80 R009-R700 1.20 1.84 1.80 R003 0.50 1.44 1.55 R004-R007 0.80 1.44 1.40 R008-R500 0.80 1.44 1.40 R005 0.50 0.92 1.35 R006-R009 0.60 0.92 1.30 R010-R075 0.60 0.92 1.30 R005-R025 0.40 0.60 0.60 WW25D WW12D WW08D WW06D WW04D Page 4 of 10 WWxxD_V08 OCT 2019 Approval sheet MARKING Each resistor is marked with a four-digit code on 2512/1206 & three-digit code on 0805 & two-digit on 0603 protective coating to designate the nominal resistance value.0402 has n marking. Example: R020 = 0.02 ( WW25D/WW12D ) 020 = 0.02 ( WW08D ) 20 = 0.02  ( WW06D ) FUNCTIONAL DESCRIPTION Derating curve The power that the resistor can dissipate depends on the operating temperature; see Fig.2 STORAGE CONDITIONS Under airtight in temperature+10℃～40℃、relative humidity ≦75% can store 2 years. Without dew in temperature+10℃～60℃、relative humidity be 95% maximum value for 30days. SOLDERING CONDITIONS The robust construction of chip resistors allows them to be completely immersed in a solder bath of 260C for max.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). Typical examples of soldering processes that provide reliable joints without any damage are given in Fig3 as below. Page 5 of 10 WWxxD_V08 OCT 2019 Approval sheet Fig 3. Infrared soldering profile for Chip Resistors CATALOGUE NUMBERS The resistors have a catalogue number starting with . WW12 R020 Size code Type code Resistance code Tolerance Packaging code Termination code WW25 : 2512 D : Metal foil R is first digit followed by 3 significant digits. J : 5% T : 7” reeled in tape L = Sn base (lead free) WW20 : 2010 0.020 = R020 WW12 : 1206 F T L D F : 1% D : 0.5% 0.040 = R040 WW08 : 0805 WW06 : 0603 WW04 : 0402 0402 Reeled tape packaging : 8mm width paper taping 10,000pcs per reel. 1206/ 0805/ 0603 Reeled tape packaging 2512 Reeled tape packaging Page 6 of 10 : 8mm width paper taping 5,000pcs per reel. : 8mm width PC taping 4,000pcs per reel. WWxxD_V08 OCT 2019 Approval sheet TEST & REQUIREMENTS 5 Page 7 of 10 WWxxD_V08 OCT 2019 Approval sheet PACKAGING Tape Specifications (unit :mm) Symbol A B W F E WW25D 6.75±0.20 3.40±0.20 8.00±0.20 3.50±0.05 1.75±0.10 WW12D 3.65±0.20 2.05±0.20 8.00±0.20 3.50±0.05 1.75±0.10 WW08D 2.38±0.20 1.68±0.20 8.00±0.20 3.50±0.05 1.75±0.10 WW06D 1.98±0.20 1.18±0.20 8.00±0.20 3.50±0.05 1.75±0.10 WW04D 1.25±0.20 0.75±0.20 8.00±0.20 3.50±0.05 1.75±0.10 Symbol P1 P0 D T WW25D 4.00±0.10 4.00±0.10 1.5000..10 1.3 max. WW12D 4.00±0.10 4.00±0.10 1.5000..10 1.0 max. WW08D 4.00±0.10 4.00±0.10 1.5000..10 1.0 max. WW06D 4.00±0.10 4.00±0.10 1.5000..10 1.0 max. WW04D 4.00±0.10 4.00±0.10 1.5000..10 0.50±0.05 Reel Dimensions Symbol A B C D (unit : mm) 180.0 -1.5 60.0±1.0 13.0±0.2 9.0 +1.0 Taping Quantity - 1206/0805/0603 chip resistors 5,000 pcs per reel. - 2512 chip resistors 4,000 pcs per reel. - 0402 chip resistors 10,000 pcs per reel. Page 8 of 10 WWxxD_V08 OCT 2019