Resistors Make Possible Surface Mount High Power Resistors WSMHP Series TO-263 surface mount package Very low thermal resistance Non-inductive, 20, 25 and 35 watt high power resistors Low profile package for high density PCB installation Suitable for board mounting with either solder or clip AEC-Q200 qualified All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2) Electrical Data WSMHP20 WSMHP25 WSMHP35 Conditions Power rating watts 20 25 35 Heatsink with 25C flange temperature Power rating watts 2.5 Without heatsink Thermal resistance C/W 3.3 Resistor hotspot to flange Limiting element voltage volts 500 dc or ac rms Resistance range ohms 0R5 100K Dielectric strength volts 2000 dc for 60s Working temperature range C -55 to 175 Insulation resistance ohms >10G Between terminals and tab Tolerances % 1R0: 5 >1R0: 1, 5 TCR ppm/C 3R0: 300 >3R0-10R: 100 >10R: 50 25 to 105C Standard values E24 preferred Physical Data Dimensions (mm) & Weight (g) A 10.1 0.3 B 10.1 0.3 C 4.6 0.2 D 5.0 1 E 1.27 0.3 F 2.54 0.5 G 3.2 0.2 H 0.43 0.07 J 0.88 0.12 K 1.32 0.15 L 5.08 0.1 M 1.35 0.1 O 1.5 0.5 P 2.54 0.1 P1 0 to 3 P2 0 to 3 Q 6.9 0.3 R 0 to 0.254 T 6.0 1 Wt 1.5 nom. General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttelectronicsresistors.com TT Electronics plc 05.15Resistors SSuurrffaaccee M Moouunnt Ht Hiigghh P Poowweerr R Reessiisstotorrss SurfSSuuace Mounrrffaaccee M Moot High Puunnt Ht Hiiggohhw P Per Roowwesiseerr R Rtoreesssiisstotorrss Make Possible WSMHP Series WSMHP Series Performance Data Performance Data Test Performance R% Load at Rated Power: 2000hrs at rated power 1 Load at Rated Power: 2000hrs at rated power R% 1 R% Short Term Overload: 2 x rated power with applied voltage not to exceed 1.5 x maximum continuous operating voltage for 5 seconds 0.3 Short Term Overload: 2 x rated power with applied voltage not to exceed 1.5 x maximum continuous operating voltage for 5 seconds R% 0.3 R% High Temperature Exposure: MIL-STD-202 method 108, at 175C for 1000hrs, no load 0.25 High Temperature Exposure: MIL-STD-202 method 108, at 175C for 1000hrs, no load R% 0.25 R% Temperature Cycling: JESD22 method JA-104, -55C/175C, 1000cycles 0.3 Temperature Cycling: JESD22 method JA-104, -55C/175C, 1000cycles R% 0.3 R% Biased Humidity: MIL-STD-202 method 103, 1000hrs 85C/85% RH, 10% of operating power 0.5 Biased Humidity: MIL-STD-202 method 103, 1000hrs 85C/85% RH, 10% of operating power R% 0.5 R% Mechanical Shock: MIL-STD-202 method 213 0.5 Mechanical Shock: MIL-STD-202 method 213 R% 0.5 R% VibrVibar tion:ation MIL-S: MIL-STD-202 meTD-202 mthod 204, peak accelerethod 204, peak acceleartion 5g fation 5or 20min, 12 cyg for 20min, 12cles each of 3 orien cycles each of 3 ortiaetions, 10-2000Hzntations, 10-2000Hz R% 0.20.2 R% RResisesitsance ttance o Soldering Heato Soldering Het:at JIS: J-C-5201-1 4.18 IEIS-C-5201-1 4.18 C 60115-1 4.18, 2605C fIEC 60115-1 4.18, 2605Cor 10 sec for 10 seondsconds R% 0.50.5 R% HBM ESD: AEC-Q200-002, human body 25kV (AD) R% 1 HBM ESD: AEC-Q200-002, human body 25kV (AD) 1 Solderability: J-STD-002, 2405C for 3 seconds 90% coverage Solderability: J-STD-002, 2405C for 3 seconds 90% coverage R% Moisture Resistance: MIL-STD-202 method 106, 10 cycles, 24hours R% 0.5 Moisture Resistance: MIL-STD-202 method 106, 10 cycles, 24hours 0.5 Bending Strength: AEC-Q200-005, Bending 2mm for 60 seconds R% 0.25 R% Bending Strength: AEC-Q200-005, Bending 2mm for 60 seconds 0.25 Terminal Strength: AEC-Q200-006, 1.8Kg for 60 seconds R% 0.2 R% Terminal Strength: AEC-Q200-006, 1.8Kg for 60 seconds 0.2 Temperature Derating Typical Thermal Performance on FR4 Pad Heatsink Dim. x, y P (W) 90C, 35m 50, 40 4.5 45, 35 4 40, 30 3.5 35, 25 3 20, 10 2 Characterisation carried out using 35m PCB copper pad weights, with temperature of 90C used as a maximum reference on the PCB. P (W) is power when the measurement point reaches 90C. 90C, 35m Pulse Performance Typical High Frequency Performance Single Pulse (P << P ) Condition mean r Pulse performance for durations 1s is dependent on mounting conditions. The short term Typical high frequency characteristics for WSMHP35-220R. Self resonant frequency is 1GHz. overload power limit is 2 x power rating for 5s. General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics own data and is considered accurate at time of going to print. www.ttwww.ttelectroelectronicsresistors.comnicsresistors.com TT Electronics plc 05.15