WW12ER033FTL

Approval sheet WW12E, WW08E, WW06E ±5%, ±1% Thick film low ohm chip resistors Size 1206, 0805, 0603 RoHS Exemption free and Halogen free *Contents in this sheet are subject to change without prior notice. Page 1 of 7 ASC_WWxxE_V03 JULY 2016 Approval sheet FEATURE 1. High power rating and low range 2. High reliability and stability 3. Suitable for current sensing of small mobile devices 4. RoHS compliant & Lead free 5. Low cost benefit APPLICATION • Game equipment • Mobile phone • Battery pack • Power supply • DSC • HDD 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 WWxxE Page 2 of 7 ASC_WWxxE_V03 JULY 2016 Approval sheet QUICK REFERENCE DATA Item General Specification Series No. WW12E WW08E WW06E Size code 1206 ( 3212 ) 0805 ( 2012 ) 0603 ( 1608 ) ±5%, ±1% ±5%, ±1% ±5%, ±1% 0.010Ω ~ 0.976Ω 0.010Ω ~ 0.976Ω 0.010Ω ~ 0.976Ω 0.010Ω ~ 0.018Ω +/- 1500 ppm +/- 1500 ppm 0.010Ω ~ 0.036Ω: +/- 2000 ppm 0.019Ω ~ 0.047Ω +/- 1200 ppm +/- 1200 ppm 0.037Ω ~ 0.091Ω: +/- 1200 ppm 0.048Ω ~ 0.091Ω +/- 1000 ppm +/- 1000 ppm 0.093Ω ~ 0.500Ω: +/- 800 ppm 0.093Ω ~ 0.360Ω +/- 600 ppm +/- 600 ppm 0.510Ω ~ 0.976Ω: +/- 300 ppm 0.365Ω ~ 0.500Ω +/- 300 ppm +/- 300 ppm +/- 200 ppm +/- 200 ppm Resistance Tolerance Resistance Range TCR (ppm/°C) 0.510Ω ~ 0.976Ω 1/2 W 1/4 W 1/10 W Max. Operation Current 0.7 A ~ 7.0 A 0.5 A ~ 5 A 0.3 A ~ 3.2 A Operation temperature -55 ~ +155’C -55 ~ +155’C -55 ~ +155’C Max. dissipation at Tamb=70°C 1. Max. Operation current : So called RCWC (Rated Continuous Working Current) is determined by RCWC = Rated Power / Resistance Value MECHANICAL DATA (unit: mm) Symbol WW08E WW12E WW06E L 2.00 ± 0.10 3.10 ± 0.10 1.60 ± 0.10 W 1.25 ± 0.10 1.60 ± 0.10 0.80 ± 0.10 H 0.50 ± 0.15 0.60 ± 0.15 0.45 ± 0.15 c 0.40 ± 0.20 0.50 ± 0.20 0.30 ± 0.10 d 0.40 ± 0.20 0.45 ± 0.20 0.30 ± 0.20 R=100mohm ASC_WWxxE_V03 JULY 2016 Approval sheet MARKING For 1206/0805 size, each resistor is marked with a four-digit code on the protective coating to designate the nominal resistance value. Example: R100 = 0.10Ω R510 = 0.51Ω R100 For 0603, each resistor is marked with a three-digit code on the protective coating to designate the nominal resistance value. FUNCTIONAL DESCRIPTION De-rating curve The power that the resistor can dissipate depends on the operating temperature; see Fig.2 Page 4 of 7 ASC_WWxxE_V03 JULY 2016 Approval sheet 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 245°C during 3 seconds within lead-free solder bath. 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 resistor CATALOGUE NUMBERS The resistors have a catalogue number starting with . WW08 E R050 F T L Size code Type code Resistance code Tolerance Packaging code Termination code WW08 : 0805 E : Low cost E96 +E24: J : ±5% T : 7” Reel taping R is first digit followed by 3 significant digits. F : ±1% L = Sn base (lead free) WW12 : 1206 WW06 : 0603 0.010Ω = R010 0.025Ω = R025 0.100Ω = R100
Reeled tape packaging Page 5 of 7 8mm width paper taping 4mm pitch, 5,000pcs per reel. ASC_WWxxE_V03 JULY 2016 Approval sheet TEST AND REQUIREMENTS TEST Temperature Coefficient of Resistance ( TCR ) PROCEDURE REQUIREMENT Natural resistance change per change in degree Test temperature +155°C centigrade. As defined in P.3 R2 − R1 × 106 R1 (t2 − t1 ) (ppm/°C) R1 : Resistance at reference temperature R2 : Resistance at test temperature t1 : 25°C Short time overload ( STOL ) Permanent resistance change after 2 second application ∆R/R max. ±2% of a current 2.5 times RCWC specified. no visible damage Sub-Clause 4.13 Resistance to soldering heat Un-mounted chips 10±0.5 seconds, 260±5ºC no visible damage ∆ R/R max. ±1% Sub-clause 4.18 Solderability Sub-clause 4.17 Temperature cycling Sub-clause 4.19 Termination Sn base (lead free) : Un-mounted chip good tinning (>95% covered) completely immersed in a lead free solder bath, no visible damage 235°C±5°C, 2±0.5 sec 1. 30 minutes at -55°C±3°C, no visible damage 2. 2~3 minutes at room temperature, ∆R/R max. ±1% 3. 30 minutes at +155°±3°C, 4. 2~3 minutes at room temperature, Total 5 continuous cycles Load life (endurance) 70±2ºC, 1000 hours, loaded with rated current, ∆R/R max. ±3% 1.5 hours on and 0.5 hours off no visible damage Sub-clause 4.25.1 Load life in Humidity rated current applied 1.5hr ON, 0.5hr OFF at 40°C±2°C ∆R/R max. ±3% and 90~95% relative humidity, test period: 1000hours no visible damage Sub-clause 4.24 Sub-clause 4.33 Resistors mounted on a 90mm glass epoxy resin ∆R/R max. ±1% PCB(FR4); bending : 3 mm, no visible damage Adhesion 5N, 10±1s No visible damage Insulation resistance 0603/0805: 100Vdc, 1min R > 10Gohm Dielectric withstanding voltage 0603/0805: 100Vdc, 1min Bending strength Sub-clause 4.32 Page 6 of 7 1206: 400Vdc, 1min No flash over, fire and breakdown 1206: 400Vdc, 1min ASC_WWxxE_V03 JULY 2016 Approval sheet PACKAGING Paper Tape specifications (unit: mm ) Series No. A B W F E WW08E 2.40±0.20 1.65±0.20 8.00±0.20 3.50±0.05 1.75±0.10 WW12E 3.60±0.20 2.00±0.15 8.00±0.20 3.50±0.05 1.75±0.10 WW06E 1.90±0.20 1.10±0.20 8.00±0.20 3.50±0.05 1.75±0.10 Series No. P1 P0 ΦD T WW08E 4.00±0.10 4.00±0.10 Φ1.50 +−00..10 Max. 1.0 WW12E 4.00±0.10 4.00±0.10 Φ1.50 +−00..10 Max. 1.0 WW06E 4.00±0.10 4.00±0.10 Φ1.50 +−00..10 0.65±0.05 Reel dimensions Page 7 of 7 Symbol A B C D (unit : mm) Φ180 +0/ -1.5 Φ60+1.0/-0 13.0±0.2 9.0+1.0 ASC_WWxxE_V03 JULY 2016