Low Resistance Stand-up
Power Wirewound Resistor
PWRL Series
•3, 5, 7 and 10 watts
•0R01 ohm to 0R18 ohm range
•Radial leads for PC mount
•TC’s from 50 ppm/°C to +500 ppm/°C
(range dependent)
•Flameproof inorganic construction
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.
© 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
110
PWRL
Power rating watts 3, 5, 7 and 10
Resistance range ohms 0R01 to 0R18
Tolerance % ±1, ±2, ±3, ±5 and ±10
Electrical Data
Issue B · 03.02
A subsidiary of
TT electronics plc
Welwyn Components
Dimensions (mm)
Type A B C D E LD
PWRL-3 12.0±0.8 8.1±0.8 25.4±0.8 5.08±1.6 4.44±1.6 1.02±0.05
PWRL-5 12.7±0.8 8.8±0.8 25.4±0.8 5.08±1.6 4.44±1.6 1.02±0.05
PWRL-7 12.7±0.8 8.8±0.8 38.1±0.81 5.08±1.6 4.44±1.6 1.02±0.05
PWRL-10 16.0±0.81 13.2±0.81 35.3±0.81 7.4±1.6 6.4±1.6 1.02±0.05
Physical Data
A
LD
D
B
C
E
2.032
±0.813
4.318
±1.575
Power Derating Curve Hot Spot Temperature Rise at 25°C
PWRL series NEW 2/6/03 4:04 pm Page 1
Low Resistance Stand-up
Power Wirewound Resistor
PWRL Series
© 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
118
Issue B · 03.02
Welwyn Components
Ordering Procedure
Example: PWRL5 at 10 milliohms and 5% tolerance in bulk pack -
P W R L 5 – R 0 1 J I
Type
Value (use IEC62 code)
Tolerance (use IEC62 code)
F
1%
J
5%
G
2%
K
10%
H
3%
Note: 1 & 5% preferred
Packing
Bulk
Standard