WMHP20 WMHP35 WMHP50 WMHP100 Condions
Package style TO-220 TO-247
Power rang was 20 35 50 100 Heatsink with 25°C ange temperature
Power rang was 1.5 2.5 3 3.5 Without heatsink, in free air 25°C
Liming 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
Insulaon resistance ohms >10G Between terminals and tab
Tolerances % ≤1R0: ±5 >1R0: ±1, ±5
TCR ppm/°C ≤R20: ±1000 >R20–3R0: ±300 >3R0-10R: ±100 >10R: ±50 25 to 105°C
Standard values E24 preferred
Test Performance
Load at Rated Power: 2000hrs at rated power ±∆R% 1
Short Term Overload: 2 x rated power with applied voltage not to exceed 1.5 x maximum connuous operang voltage for 5 seconds ±∆R% 0.5
Damp Heat with Load: 40 ±2°C, 90 – 95% RH, maximum working voltage 1.5 hours on, 0.5 hours o, 1000 hours ±∆R% 1
Thermal Shock: -65°C/150°C, 100cycles ±∆R% 0.3
Terminal Strength: 2.4N pull test ±∆R% 0.2
WMHP Series
TO-220 & TO-247 standard power packages
Very low thermal resistance
Non-inducve thick lm technology
20 to 100 wa high power resistors
Single screw mounng to heatsink
Suitable for high frequency / fast pulse use
Electrical Data
Physical Data
Performance Data
Heatsink Mount High Power Resistors
Resistors
04.16
General Note
TT Electronics reserves the right to make changes in product specication without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronicsresistors.com
All parts are Pb-free and comply with EU Direcve 2011/65/EU (RoHS2)
Dimensions (mm) & Weight (g)
TO-220 TO-247
A10.16 ±0.25 15.75 ±0.26
B15 ±0.3 20.7 ±0.26
C4.6 ±0.2 4.95 ±0.26
D3.85 ±0.15 3.63 ±0.1
E13.75 ±0.5 14.48 ±1.27
F4 max 2.79 ±0.76
G5.08 ±0.25 3.63 ±0.18
H0.78 ±0.08 1.52 ±0.1
J1.3 ±0.1 10.16 ±0.26
K6.4 ±0.25 5.33 ±0.26
L0.51 ±0.15 0.81 ±0.26
M2.27 ±0.25 2.41 ±0.26
Wt 2.0 nom 3.7 nom TO-220 TO-247
BI Technologies IRC Welwyn
www.ttelectronicsresistors.com
WMHP
Series
Heatsink
HeatsinkHeatsink
Heatsink
Mount High Power Resistors
Mount High Power ResistorsMount High Power Resistors
Mount High Power Resistors
Temperature Derating
Pulse Performance
Single Pulse (P
mean
<< P
r
) Condition
Typical High Frequency Performance
Ordering Procedure
Example: WMHP35-10KJ (WMHP35 at 10 kilohms ±5%, Pb-free)
   
 
 


 


 


 


Pulse performance for durations ≥1s is dependent on mounting conditions. The short term
overload power limit is 2 x power rating for 5s.
Typical high frequency characteristics for WMHP35-220R. Self resonant frequency is 1GHz.
TO
-
220
TO
-
2
47
www.ttelectronicsresistors.com
WMHP
Series
Heatsink
HeatsinkHeatsink
Heatsink
Mount High Power Resistors
Mount High Power ResistorsMount High Power Resistors
Mount High Power Resistors
Temperature Derating
Pulse Performance
Single Pulse (P
mean
<< P
r
) Condition
Typical High Frequency Performance
Ordering Procedure
Example: WMHP35-10KJ (WMHP35 at 10 kilohms ±5%, Pb-free)
   
 
 


 


 


 


Pulse performance for durations ≥1s is dependent on mounting conditions. The short term
overload power limit is 2 x power rating for 5s.
Typical high frequency characteristics for WMHP35-220R. Self resonant frequency is 1GHz.
TO
-
220
TO
-
2
47
WMHP Series
Heatsink Mount High Power Resistors
Resistors
04.16
General Note
TT Electronics reserves the right to make changes in product specication without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© TT Electronics plc
www.ttelectronicsresistors.com
10
100
1000
0.1 110 100 1000 10000 100000
Peak Power (W)
Pulse Duration (ms)
WMHP100
WMHP35
WMHP50
WMHP20
The resistor should be mounted to a heatsink using
a suitable thermal interface material. The maximum
ghtening torque for the M3 mounng screw is 0.9Nm.
Mounng
BI Technologies IRC Welwyn
Mouser Electronics
Authorized Distributor
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