Resistors HeatsinkMount Mount High Power Resistors Heatsink High Power Resistors WMHP Series WMHP Series (WMHP20 & WMHP35) AEC-Q200 (WMHP35) TO-220 & TO-247 standard power power packages packages TO-220 & TO-247 standard Very low low thermal thermal resistance resistance Very Non-inductive thick film technology Non-inductivethickfilmtechnology 20 to 100 watt high power resistors 20to100watthighpowerresistors Single screw mounting to heatsink Singlescrewmountingtoheatsink Tailored heatsink WMHP-HS available TailoredheatsinkWMHP-HSavailable Suitable for high frequency / fast pulse use Suitableforhighfrequency/fastpulseuse All parts comply with EU Directive 2011/65/EU (RoHS2) All parts are Pb-free and comply withare EU Pb-free Directiveand 2011/65/EU amended by (EU) 2015/863 (RoHS3) Electrical Data WMHP20 Package style Power rating watts 20 Power rating watts 1.5 Limiting element voltage volts Resistance range ohms Dielectric strength volts Working temperature range Insulation resistance WMHP50 35 50 2.5 3 Conditions 100 Heatsink with 25C flange temperature 3.5 Without heatsink, in free air 25C 700 dc or ac rms R05 - 10K 1800 -65 to 150 ohms ac rms for 60s -65 to 175 >10G % ppm/C WMHP100 TO-247 350 C Tolerances TCR WMHP35 TO-220 Between terminals and tab 1R0: 5 >1R0: 1, 5 R20: 1000 >R20-3R0: 300 >3R0-10R: 100 >10R: 50 25 to 105C Standard values E24 preferred Physical Data Dimensions (mm) & Weight (g) TO-220 TO-247 A 10.16 0.25 15.75 0.26 B 15 0.3 20.7 0.26 C 4.6 0.2 4.95 0.26 D 3.85 0.15 3.63 0.1 E 13.75 0.5 14.48 1.27 F 4 max 2.79 0.76 G 5.08 0.25 3.63 0.18 H 0.78 0.08 1.52 0.1 J 1.3 0.1 10.16 0.26 K 6.4 0.25 5.33 0.26 L 0.51 0.15 0.81 0.26 M 2.27 0.25 2.41 0.26 Wt 2.0 nom 3.7 nom TO-220 TO-247 Performance Data Load at Rated Power: 2000hrs at rated power Test Short Term Overload: 2 x rated power with applied voltage not to exceed 1.5 x maximum continuous operating voltage for 5 seconds Damp Heat with Load: 40 2C, 90 - 95% RH, maximum working voltage 1.5 hours on, 0.5 hours off, 1000 hours Thermal Shock: -65C/150C, 100cycles Terminal Strength: 2.4N pull test General Note Note General TT Electronics reserves the right to make changes in product specification without notice or liability. 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. All information is subject to TT Electronics' own data and is considered accurate at time of going to print. (c) TT TT Electronics Electronics plc plc (c) R% R% R% R% R% Performance 1 0.5 1 0.3 0.2 BI Technologies Technologies IRC IRC Welwyn Welwyn BI www.ttelectronics.com/resistors www.ttelectronics.com/resistors 09.17 09.20 06.20 ResistorsMount High Power Resistors Resistors Resistors Heatsink Heatsink Mount High Power Resistors HeatsinkMount MountHigh HighPower PowerResistors Resistors Heatsink Heatsink Mount High Power Resistors unt Power Resistors Heatsink Mount untHigh HighWMHP Power Resistors MountHigh HighPower PowerResistors Resistors Heatsink WMHP Series WMHP Series WMHP Series Series WMHP Series WMHP WMHP Series Series Temperature TemperatureDerating Derating Mounting Temperature TemperatureDerating Derating The Theresistor resistorshould shouldbe bemounted mountedtotoaaheatsink heatsinkusing using aasuitable suitablethermal thermalinterface interfacematerial. material.The Themaximum maximum tightening torque for the M3 mounting screw is 0.9Nm. TO-220 TO-220 Pulse PulsePerformance Performance TO-247 TO-247 TO-247 TO-247 Typical Typical TypicalHigh HighFrequency FrequencyPerformance Performance TypicalHigh HighFrequency FrequencyPerformance Performance Pulse PulsePerformance Performance ngle Pulse << Pr)r)Condition Single Pulse(P(Pmean Condi on mean << P 1000 1000 TO-220 TO-220 AAtailored tailoredheatsink heatsinkisisavailable availablewhich whichaccommodates accommodatesboth both TO-220 TO-220and andTO-247 TO-247package packagestyles. styles.This ThisisisWMHP-HS WMHP-HSand and product productdata dataisisavailable availableatat http://www.ttelectronics.com/sites/default/files/resistorshps://www.TTelectronics.com/TTElectronics/media/ datasheets/WMHP-HS.pdf ProductFiles/Resistors/Datasheets/WMHP-HS.pdf Single << Pr)r)Condition SinglePulse Pulse(P(Pmean Condition mean << P PeakPower Power(W) (W) Peak 100 100 WMHP100 WMHP100 WMHP50 WMHP50 WMHP35 WMHP35 WMHP20 WMHP20 10 10 0.1 0.1 11 10 10 100 100 1000 1000 10000 10000 Pulse PulseDuration Duration(ms) (ms) 100000 100000 sns1s on The term Pulse performance for durations 1s conditions. The term Typical high characteristics Self resonant isis1GHz. Typical characteristics for 1sisisdependent dependent onmounting moun ngconditions. condi ons. Theshort short term Pulse performance for durations 1sis isdependent dependenton onmounting mounting conditions. Theshort short term Typical highfrequency frequency characteris csfor forWMHP35-220R. WMHP35-220R. Selffrequency resonantfrequency frequency 1GHz. Typicalhigh high frequency characteristics forWMHP35-220R. WMHP35-220R.Self Selfresonant resonantfrequency frequencyisis1GHz. 1GHz. er rating wer ra ngfor for5s. 5s. overload overloadpower powerlimit limitisis2 2x xpower powerrating ratingfor for5s. 5s. Procedure Ordering Procedure Procedure 0KJ (WMHP35 5%, WMHP35-10KJ (WMHP35 at 10 kilohms 5%, Pb-free) (WMHP35atExample: at10 10kilohms kilohms 5%,Pb-free) Pb-free) General Note General Note GeneralNote Note General General Note TT Electronics reserves the right to make changes ininproduct product specification without notice ororliability. liability. TTElectronics Electronicsreserves reservesthe theright rightto tomake makechanges changesin productspecification specificationwithout withoutnotice noticeor liability. TT All information isisissubject subject to TT Electronics' own data and isisisconsidered considered accurate at time of going to print. All information subject to TT Electronics' own data and considered accurate at time of going to print. All information subject to TT Electronics' own data and considered accurate at time of going toprint. print. All information is to TT Electronics' own data and is accurate at time of going All information is subject to TT Electronics' own data and is considered accurate at time of goingtoto print. (c) TT Electronics plc (c) TT Electronics plc (c)TT TTElectronics Electronicsplc plc (c) (c) TT Electronics plc BI Technologies IRC Welwyn BITechnologies Technologies IRC IRC Welwyn Welwyn BI BI Technologies IRC Welwyn www.ttelectronicsresistors.com www. electronicsresistors.com www.ttelectronics.com/resistors www.ttelectronics.com/resistors www.ttelectronics.com/resistors www.ttelectronics.com/resistors www.ttelectronics.com/resistors www.ttelectronicsresistors.com www. electronicsresistors.com 07.18 09.20 06.20 09.19 09.17 09.17