20W TO-263 HIGH POWER SURFACE MOUNT
RESISTORS
Features…………………………………………………………
.
Non-Inductive, Small, 20 Watt high power resistor.
TO-263 surface mount package offering a very low thermal resistance.
Small thin package for high density PCB installation.
RoHS compliant.
Suitable for board mounting with either solder or clip.
Applications………………………………………………
High frequency emitter resistors in switching power supplies.
High precision CRT color video amplifiers.
High frequency snubber and pulse handling circuits.
Pulse generator load resistors
.
In-rush current protection
Bleeder Resistors
………
Specification
Dimensions (mm)
10.6max
4.5
1.5
2.0+/-0.5
3.0+/-0.5
10.3+/-0.5
10.6max
1.6+/-0.2
1.7+/-0.5
10.16
2.03
5.08
12.7
SMHP
2.0+/-0.5
10.3+/-0.5
(15.3)
0.75
1.5
5.08
0.5
2.7
1.4+/-0.2
Tolerances +/-0.1 unless otherwise marked
Specifications subject to change without notice
Items
Power Rating
Power Rating
Thermal Resistance
Resistance Range
Nominal Resistance Series
TCR(ppm/°C)
Tolerance
Operation Temp. Range
Max. Operating Voltage
Dielectric Withstanding Voltage.
Load Life
Humidity
Temp. Cycle
Soldering Heat (Max)
Solderability
Insulation Resistance
Vibration
Specification
20 Watt
2.25 Watt
3.3°C/W
0.1-9.1
Ω
E12
100
+/-1% & +/-5%
-55°C to+155°C
500V or
P
⋅
R
2000 V DC
∆R
+/- (1.0% + 0.05
Ω)
∆R
+/- (1.0% + 0.05
Ω)
∆R
+/- (0.25% + 0.05
Ω)
∆R
+/- (0.1 %+0.05
Ω)
Min. 90% coverage
Over 1,000 Meg
Ω
∆R
+/- (0.25% + 0.05
Ω)
Test Conditions
-55°C to 25°C flange temperature
Without heatsink
Resistor hot spot to flange
Up to 51KΩ also available
Including 2.5Ω and 5.0
Ω
For -55°C to +155
°C
0.01-0.09
Ω
E6
250
+/-5%
10-220
Ω
E24
50
+/-1%
60 seconds.
25
°C,
90 min.ON, 30 min. OFF, 1000 hours.
40°C, 90-95%RH, DC 0.1W, 1000 hours.
-55°C,30 min.,+155°C,30 min., 5cycles
250+/-5°C, 3seconds,
230+/-5°C, 3seconds.
Between terminals and tab.
Notes:
1. Electrically isolated metal tab.
2. Contact factory for custom products, non-standard values and tolerances.
3. Current rating: 25A maximum.
1
3.81
17.78
SMHP 20
20W TO-263 HIGH POWER RESISTORS
% Power
100
80
Derating Curve
+25
°C
Temperature rise (°C)
120
.
Temperature Rise
100
80
60
40
20
0
-50
0
+155
°C
60
40
20
50
100
150
Flange Temperature (°C)
200
0
0
10
20
Applied Power (W)
30
Tape Dimensions and Orientation
16.0
5.0
0.4
10.8
4.0
2.0
16.3
11.5
Reel Dimension:
Outer Diameter: 300 mm
Inner Diameter: 100 mm
Width: 23.9 mm min. 27.4 mm max
Quantity: 500pcs/reel
1.75
24.0
Reel Orientation:
Units to be orientated with Pins facing Sprocket Holes
FR4 Thermal PCB Characterisation
Pad Dimensions (x,y mm)
50, 40
45, 35
40, 30
35, 25
20, 10
P
90
°C,
35um
(W)
x mm
4.5
4
3.5
3
2
y mm
Temperature
measurement
Notes: Characterisation carried out using 35µm PCB copper pad weights, with the temperature of 90°C used as a maximum
reference on the PCB.
P
90
°C,
35um
(W)
is power when the measurement point reaches 90
°C
Ordering Information
SMHP 20
500
F
Model
Resistance Code
0.1Ω : 0R100
50
Ω
: 500 First two digits significant, last digit: number of trailing zeros
Tolerance
J = 5% Tol
F = 1% Tol
2
PCB设计
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