General Note
BI Technologies reserves the right to make changes in product specification without notice or liability
© BI Technologies Limited •
Glenrothes, Fife KY7 4NX, UK
Telephone: +44 (0) 1592 662200 • Facsimile: +44 (0) 1592 662299 • Website: www.bitechnologies.com • Email: sales@bitechnologies.co.uk
A subsidiary of TT electronics plc
MODEL SMHP
SMHP Series Issue August 08
SMHP Series
• 20W High Power Resistors
• TO-263 Surface Mount
• RoHS Compliant.
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.
• Suitable for board mounting with either solder or clip.
APPLICATIONS
• High frequency emitter resistors in switching power supplies.
• High precision CRT colour video amplifiers.
• High frequency snubber and pulse handling circuits.
• Pulse generator load resistors.
• In-rush current protection.
• Bleeder Resistors.
DIMENSIONS (mm)
A
B
C
D
E
F
M
G
H
K
L
J
mm ± mm
A 10.1 ± 0.2
B 10.3 ± 0.2
C 4.5 ± 0.2
D 5.0 ± 1.0
E 2.5 ± 0.5
F 2.2 ± 0.2
G 2.75 ± 0.2
H 0.5 ± 0.05
J 0.75 ± 0.05
K 1.5 ± 0.05
L 5.08 ± 0.10
M 1.5 ± 0.05
SMHP
General Note
BI Technologies reserves the right to make changes in product specification without notice or liability
© BI Technologies Limited •
Glenrothes, Fife KY7 4NX, UK
Telephone: +44 (0) 1592 662200 • Facsimile: +44 (0) 1592 662299 • Website: www.bitechnologies.com • Email: sales@bitechnologies.co.uk
A subsidiary of TT electronics plc
MODEL SMHP
SMHP Series Issue August 08
ELECTRICAL
ITEMS SPECIFICATION TEST CONDITIONS
20 Watt -55°C to +25°C Flange Temperature
2.25 Watt Without Heatsink
Thermal Resistance 3.3°C/ W Resistor Hotspot to Flange
Resistance Range 0.01 - 0.09Ω 0.1 - 9.1Ω 10 - 220Ω Up to 51KΩ also available
Nominal Resistance Series E6 E12 E24 Including 2.5Ω and 5.0Ω
TCR (ppm/°C) 250 100 50 For -55°C to +155°C
Tolerance ±5% ±1% & ±5% ±1%
Operation Temperature Range -55°C to +155°C
Maximum Operating Voltage 500V or √PR
Dielectric Withstanding Voltage 2000 Vdc 60 Seconds
Load Life ∆R = ±1% +0.5Ω 25°C, 90 min ON, 30 min OFF, 1000 Hours
Humidity ∆R = ±1% +0.5Ω 40°C, 90 - 95%RH,DC 0.1W, 1000 Hours
Temperature Cycle ∆R = ±1% +0.5Ω -55°C, 30 min, +155°C, 30 min, 5 cycles
Soldering Heat (Max.) ∆R = ±1% +0.5Ω 250 ± 5°C, 3 seconds
Solderability Minimum 90% Coverage 230 ± 5°C, 3 seconds
Insulation Resistance Over 1,000 MegΩ Between Terminals and Tab
Vibration ∆R = ±0.25% +0.5Ω
Power Rating
Notes:
1. Electrically isolated metal tab.
2. Contact Factory for custom products, non-standard values and tolerances
3. Current Rating: 25A Maximum.
TAPE DIMENSIONS & ORIENTATION
16.0
4.0
1.75
24.0
2.0
0.4
5.0
11.5
16.3
Reel Dimension:
Outer Diameter: 300mm
Inner Diameter: 100mm
Width: 23.9mm Min. - 27.4mm Max.
Quantity: 500 pcs/Reel
Reel Orientation:
Units to be orientated with Pins facing Sprocket Holes.
General Note
BI Technologies reserves the right to make changes in product specification without notice or liability
© BI Technologies Limited •
Glenrothes, Fife KY7 4NX, UK
Telephone: +44 (0) 1592 662200 • Facsimile: +44 (0) 1592 662299 • Website: www.bitechnologies.com • Email: sales@bitechnologies.co.uk
A subsidiary of TT electronics plc
MODEL SMHP
SMHP Series Issue August 08
DERATING CURVE TEMPERATURE RISE
% Power
100
0
50
25 70 155
Flange Temperature (°C)
20
120
100
80
60
40
0 10 20 30
Temperature Rise (°C)
Applied Power (W)
FR4 THERMAL PSB CHARACTERISATION
Pad Dimensions (x,y mm) P
90°C, 35µm
(W)
50,40 4.5
45,35 4
40,30 3.5
35,25 3
20,10 2
x mm
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, 35µm
(W) is power when the measurement point reaches 90°C.
ORDERING INFORMATION
SMHP 20 500 F T13
Model Tape & Reel:
13” Reel (500 pcs per reel)
Resistance Code:
0.1Ω : 0R100
50Ω : 500 Tolerance:
First two digits significant, last digit denotes number of trailing zeros
J = 5% Tolerance
F = 1% Tolerance
(No code used for Magazines)
