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Surface Mount High Power Resistors
Surface Mount High Power ResistorsSurface Mount High Power Resistors
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
Electrical
Data
WSMHP20 WSMHP25 WSMHP35 Conditions
Power rating
watts
20
25
35
Heatsink with
25°C 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
0
R
5
–
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 105°C
Standard values
E24 preferred
Physical Data
All parts are Pb
-
free and comply with EU Directive 2011/65/EU (RoHS2)
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.
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Performance Data
WSMHP Series
Surface Mount High Power Resistors
Surface Mount High Power ResistorsSurface Mount High Power Resistors
Surface Mount High Power Resistors
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 continuous operating voltage for 5 seconds
±∆R%
0.3
High Temperature Exposure:
MIL-STD-202 method 108, at 175°C for 1000hrs, no load
±∆R%
0.25
Temperature Cycling:
JESD22 method JA-104, -55°C/175°C, 1000cycles
±∆R%
0.3
Biased Humidity:
MIL-STD-202 method 103, 1000hrs 85°C/85% RH, 10% of operating power
±∆R%
0.5
Mechanical Shock:
MIL-STD-202 method 213
±∆R%
0.5
Vibration:
MIL-STD-202 method 204, peak acceleration 5g for 20min, 12 cycles each of 3 orientations, 10-2000Hz
±∆R%
0.2
Resistance to Soldering Heat:
JIS-C-5201-1 4.18 IEC 60115-1 4.18, 260±5°C for 10 seconds
±∆R%
0.5
HBM ESD:
AEC-Q200-002, human body 25kV (AD)
±∆R%
1
Solderability:
J-STD-002, 240±5°C for 3 seconds
≥90% coverage
Moisture Resistance:
MIL-STD-202 method 106, 10 cycles, 24hours
±∆R%
0.5
Bending Strength:
AEC-Q200-005,
Bending 2mm for 60 seconds
±∆R%
0.25
Terminal Strength:
AEC-Q200-006, 1.8Kg for 60 seconds
±∆R%
0.2
Dim. x, y
P
90°C, 35µm
(W)
50, 40
4.5
45, 35
4
40, 30
3.5
35, 25
3
20, 10
2
Characterisation carried out using 35µm PCB copper pad weights, with temperature of 90°C used as a
maximum reference on the PCB. P
90°C, 35µm
(W) is power when the measurement point reaches 90°C.
Temperature Derating Typical Thermal Performance on FR4 Pad Heatsink
Pulse Performance
Single Pulse (Pmean << Pr) Condition
Typical High Frequency Performance
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 WSMHP35-220R. Self resonant frequency is 1GHz.
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Surface Mount High Power Resistors
Surface Mount High Power ResistorsSurface Mount High Power Resistors
Surface Mount High Power Resistors
WSMHP Series
Packing
WSMHP components are packed on 330mm diameter reels, with 100mm inner diameter, in tape of width 24mm and with a
quantity of 500 pieces per reel. The dimensions of the tape and orientation of the component are as shown below.
Ordering Procedure
Example: WSMHP35-10KJ (WSMHP35 at 10 kilohms ±5%, Pb-free)
W
S
M
H
P
3
5
-
1
0
K
J
1
2
3
4
1 2 3 4
Type Rating
Value Tolerance
Packing
WSMHP
20 3 / 4 characters
R = ohms
K = kilohms
F = ±1% Plastic tape
500/reel
25 J = ±5%
35
