WW12XR330JTL

Approval sheet WW12X, WW08X, WW06X, WW04X ±1%, ±5% Thick Film Low ohm chip resistors Size 1206, 0805, 0603, 0402 *Contents in this sheet are subject to change without prior notice. Page 1 of 8 ASC_WWxxX_V13 Jul - 2013 Approval sheet FEATURE 1. High power rating and compact size 2. High reliability and stability 3. Reduced size of final equipment 4. RoHS compliant and Lead free products APPLICATION • Power supply • PDA • Digital meter • Computer • Automotives • Battery charger • DC-DC power converter 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 Tin (lead free) alloy. Fig 1. Construction of Chip-R Page 2 of 8 ASC_WWxxX_V13 Jul - 2013 Approval sheet QUICK REFERENCE DATA Item General Specification Series No. WW12X WW08X WW06X WW04X Size code 1206 ( 3216 ) 0805 ( 2012 ) 0603 ( 1608 ) 0402(1005) ±5%, ±1% Resistance Tolerance Resistance Range 0.102Ω ~ 0.976Ω 0.100Ω ~ 0.976Ω TCR (ppm/°C) Rn < 0.50Ω ≤ 500 ppm/°C ≤ 500 ppm/°C 0.50Ω ≤ Rn < 1Ω ≤ 400 ppm/°C ≤ 300 ppm/°C Max. dissipation at Tamb=70°C 1/4 W 1/8 W Max. Operation Voltage (DC or RMS) 200V 100V 50V Max. Overload voltage (DC or RMS) 400V 200V 100V Operation temperature ≤ 500 ppm/°C ≤ 600 ppm/°C ≤ 300 ppm/°C ≤ 600 ppm/°C 1/10 W 1/16 W -55 ~ +155’C 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. MECHANICAL DATA Page 3 of 8 Symbol WW12X WW08X WW06X WW04X L 3.10 ± 0.10 2.00 ± 0.10 1.60 ± 0.10 1.00 ± 0.05 W 1.60 ± 0.10 1.25 ± 0.10 0.80 ± 0.10 0.50 ± 0.05 T 0.60 ± 0.15 0.50 ± 0.15 0.45 ± 0.15 0.35 ± 0.05 Tt 0.50 ± 0.20 0.40 ± 0.20 0.30 ± 0.10 0.20 ± 0.10 Tb 0.45 ± 0.20 0.40 ± 0.20 0.30 ± 0.20 0.25 ± 0.10 ASC_WWxxX_V13 Jul - 2013 Approval sheet MARKING 4-digits marking for 1206, 0805 size Each resistor is marked with a four-digit code on the protective coating to designate the nominal resistance value. 3-digits marking for 0603 size Each resistor is marked with a three -digit code on the protective coating to designate the nominal resistance value. WW04X series has no marking on the product overcoat for both 5% & 1%. Marking code list. Page 4 of 8 ASC_WWxxX_V13 Jul - 2013 Approval sheet FUNCTIONAL DESCRIPTION Product characterization Standard values of nominal resistance are taken from the E96 & E24 series for resistors with a tolerance of ±5% & ±1%. The values of the E24/E96 series are in accordance with “IEC publication 60063”. Derating curve The power that the resistor can dissipate depends on the operating temperature; see Fig.2 Figure 2 Maximum dissipation in percentage of rated power as a function of the ambient temperature 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. 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 Page 5 of 8 ASC_WWxxX_V13 Jul - 2013 Approval sheet CATALOGUE NUMBERS The resistors have a catalogue number starting with . WW12 X R020 F T L Size code Type code Resistance code Tolerance Packaging code Termination code WW12 : 1206 X : Normal E96 +E24: J : ±5% T : 7” Reel taping R is first digit followed by 3 significant digits. G : ±2% L = Sn base (lead free) WW08 : 0805 WW06 : 0603 WW04 : 0402 0.020Ω = R020 F : ±1% 0.510Ω = R510 0.025Ω = R025 0.400Ω = no marking Tape packaging WW12,WW08, WW06 : 8mm width paper taping 5,000pcs per reel. WW04: 8mm width paper taping 10,000pcs per reel. Page 6 of 8 ASC_WWxxX_V13 Jul - 2013 Approval sheet TEST AND REQUIREMENTS(JIS C 5201-1 : 1998) TEST Temperature Coefficient of Resistance(T.C.R) Clause 4.8 PROCEDURE Natural resistance change per change in degree centigrade. R2 − R1 × 106 R1 (t2 − t1 ) REQUIREMENT Refer to “QUICK REFERENCE DATA” (ppm/°C) t1 : 20°C+5°C-1°C R1 : Resistance at reference temperature R2 : Resistance at test temperature Short time overload (S.T.O.L) Clause 4.13 Permanent resistance change after a 5second application of a ∆R/R max. ±(2%+0.005Ω) voltage 2.5 times RCWV or the maximum overload voltage WW04X max ±(2%+0.010Ω) specified in the above list, whichever is less. Resistance to soldering heat(R.S.H) Clause 4.18 Un-mounted chips completely immersed for 10±1 second in a no visible damage SAC solder bath at 260℃±5ºC ∆ R/R max. ±(1%+0.005Ω) Solderability Un-mounted chips completely immersed for 2±0.5 second in a good tinning (>95% covered) SAC solder bath at 235℃±5℃ no visible damage Clause 4.17 Temperature cycling Clause 4.19 Load life (endurance) Clause 4.25 Load life in Humidity Clause 4.24 WW04X max ±(1%+0.010Ω) 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 no visible damage ∆R/R max. ±(1%+0.005Ω) WW04X max ±(1%+0.010Ω) 1000 +48/-0 hours, loaded with RCWV or Vmax in chamber ∆R/R max. ±(3%+0.005Ω) controller 70±2ºC, 1.5 hours on and 0.5 hours off WW04X max ±(5%+0.010Ω) 1000 +48/-0 hours, loaded with RCWV or Vmax in humidity ∆R/R max. ±(3%+0.005Ω) chamber controller at 40°C±2°C and 90~95% relative humidity, WW04X max ±(5%+0.010Ω) 1.5hours on and 0.5 hours off Clause 4.33 Resistors mounted on a 90mm glass epoxy resin PCB(FR4); ∆R/R max. ±(1%+0.005Ω) bending : 2 mm, once for 10 seconds WW04X max ±(1%+0.010Ω) Adhesion Pressurizing force: 5N, Test time: 10±1sec. Clause 4.32 Insulation Resistance No remarkable damage or removal of the terminations Apply the maximum overload voltage (DC) for 1minute R≧10GΩ Clause 4.6 Dielectric Withstand Voltage Apply the maximum overload voltage (AC) for 1 minute No breakdown or flashover Bending strength Clause 4.7 Page 7 of 8 ASC_WWxxX_V13 Jul - 2013 Approval sheet PACKAGING Paper Tape specifications (unit :mm) Series No. A B WW12X 3.60±0.20 2.00±0.20 WW08X 2.40±0.20 1.65±0.20 WW06X 1.90±0.20 1.10±0.20 WW04X 1.20±0.10 0.70±0.10 Series No. P1 4.00±0.10 WW12X / WW08X W F E 8.00±0.30 3.50±0.20 1.75±0.10 P0 ΦD T 4.00±0.10 Φ1.50 +−00..10 Max. 1.0 WW06X WW04X 2.00±0.10 0.65±0.05 4.00±0.10 0.40±0.05 Reel dimensions Page 8 of 8 Symbol A B C D (unit : mm) Φ178.0±2.0 Φ60.0±1.0 13.0±0.2 9.0±0.5 ASC_WWxxX_V13 Jul - 2013