WMHP20-270RF TT Electronics

HHHHeeeeaaaattttssssiiiinnnnkkkk MMMMoooouuuunnnntttt HHHHiiiigggghhhh PPPPoooowwwweeeerrrr RRRReeeessssiiiissssttttoooorrrrssss WMHP Series TO-220 & TO-247 standard power packages Very low thermal resistance Non-inductive thick film technology 20 to 100 watt high power resistors Single screw mounting to heatsink Suitable for high frequency / fast pulse use All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2) Electrical Data WMHP20 WMHP35 WMHP50 WMHP100 Conditions Package style TO-220 TO-247 Power rating watts 20 35 50 100 Heatsink with 25C flange temperature Power rating watts 1.5 2.5 3 3.5 Without heatsink, in free air 25C Limiting element voltage volts 350 700 dc or ac rms Resistance range ohms R05 10K Dielectric strength volts 1800 ac rms for 60s Working temperature range C -65 to 150 -65 to 175 Insulation resistance ohms >10G Between terminals and tab Tolerances % 1R0: 5 >1R0: 1, 5 TCR ppm/C R20: 1000 >R203R0: 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 14.75 0.25 20.7 0.26 C 4.44 0.38 4.95 0.26 D 3.75 0.2 3.63 0.1 E 13.7 1 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 6.1 0.25 5.33 0.26 L 0.55 0.15 0.81 0.26 M 2.3 0.25 2.41 0.26 TO-220 TO-247 Wt 2.0 nom. 3.7 nom. Performance Data Test Performance R% Load at Rated Power: 2000hrs at rated power 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 0.5 R% Damp Heat with Load: 40 2C, 90 95% RH, maximum working voltage 1.5 hours on, 0.5 hours off, 1000 hours 1 R% Thermal Shock: -65C/150C, 100cycles 0.3 R% Terminal Strength: 2.4N pull test 0.2 www.ttelectronicsresistors.com HHHHeeeeaaaattttssssiiiinnnnkkkk MMMMoooouuuunnnntttt HHHHiiiigggghhhh PPPPoooowwwweeeerrrr RRRReeeessssiiiissssttttoooorrrrssss WMHP Series Temperature Derating TO-220 TO-247 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 WMHP35-220R. Self resonant frequency is 1GHz. overload power limit is 2 x power rating for 5s. Ordering Procedure Example: WMHP35-10KJ (WMHP35 at 10 kilohms 5%, Pb-free) W M H P 3 5 - 1 0 K J 1 2 3 4 1 2 3 4 Type Rating Value Tolerance Packing WMHP 20 F = 1% 3 / 4 characters Plastic tubes 35 R = ohms J = 5% TO-220: 50/tube K = kilohms TO-247: 30/tube 50 100 www.ttelectronicsresistors.com