Precision Metal
Film Resistors
PR series
Welwyn Components
Performance Data
Maximum
0.5
Load: 1000 hours at 70°C
Derating from rated power at 70°C
Short term overload
Climatic
∆R %
zero at 155°C
0.25
∆R %
∆R %
0.5
Climatic category
55/125/56
0.5
Long term damp heat
Temperature rapid change
Resistance to solder heat
Vibration and bump
Insulation resistance
Voltage proof
∆R %
∆R %
∆R %
∆R %
ohms
volts
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.
5
Component wires will not protrude beyond the outside edge
of the tapes.
Alternative packaging available by request.
f1
f2
52
6
6
Lead Formed resistors can also be supplied. Standard options
of Lancet, Radial and Goalpost forming are shown in the Lead
Form Information section.
Body location f1 – f2 ≤ 1.4 mm
Standard Quantities Per Package
Type
PR4
PR5
Large ammo pack
5000
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
TTELEC [ TT Electronics ]
