Precision Metal
Film Resistors
PR series
Welwyn Components
Performance Data
Maximum
Load: 1000 hours at 70°C
Derating from rated power at 70°C
Short term overload
Climatic
Climatic category
Long term damp heat
Temperature rapid change
Resistance to solder heat
Vibration and bump
Insulation resistance
Voltage proof
∆R
%
∆R
%
∆R
%
∆R
%
ohms
volts
∆R
%
∆R
%
∆R
%
0.5
zero at 155°C
0.25
0.5
55/125/56
0.5
0.25
0.25
0.1
> 1G
400 min
Packaging
All PR resistors are supplied tape packed ready for loading on
to automatic sequencing and insertion machines.
Component wires will not protrude beyond the outside edge
of the tapes.
Alternative packaging available by request.
Lead Formed resistors can also be supplied. Standard options
of Lancet, Radial and Goalpost forming are shown in the Lead
Form Information section.
6
f
1
52
f
2
6
5
Body location f
1
– f
2
≤
1.4 mm
Standard Quantities Per Package
Type
Large ammo pack
PR4
5000
PR5
2500
© 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
Issue C · 04.03
183
WELWYN [ WELWYN COMPONENTS LIMITED ]
