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 -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 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
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
Temperature rise (°C) 120
.
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 P90 °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. P90 °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
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