Low Value 3W
Chip Resistors
LRF3W Series
Welwyn Components
•
•
•
3 Watts @ 70°C
Resistance range from 0.003 to 0.1Ω
Tolerances to ±1%
Electrical Data
Characteristic
Power dissipation @70°C
Resistance Range
Dielectric withstand
Ambient temp range
Resistance tolerance
TCR
Pad & trace area for maximum
power rating*
Value
3 Watts
0.003 to 0.100Ω
200V
-55 to +150°C
≤R005
5%, >R005 2, 5%,
≥R01
1, 2, 5%
±100ppm/°C
300mm
2
Power Derating Curve
100
% Of Power Rating
80
60
40
20
0
25°
70°
Temperature in
°C
150°
Physical Data
Top
Bottom
(Board Side)
0.81
±
0.13mm
Recommended
Solder Pad Layout
0.51
±
0.13mm
Plating
wrap-around
6.35
±
0.13mm
2.29
±
0.13mm
7.6mm
2mm
1mm
0.94 mm max
thickness
3.18
±
0.13mm
Weight 0.065g typ.
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
Issue D · 07.06
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
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WELWYN [ WELWYN COMPONENTS LIMITED ]
