Maximum

Load: 1000 hours at 70°C

∆R %

0.5

Derating from rated power at 70°C

zero at 155°C

Short term overload

∆R %

0.25

Climatic

∆R %

0.5

Climatic category

55/125/56

Long term damp heat

∆R %

0.5

Temperature rapid change

∆R %

0.25

Resistance to solder heat

∆R %

0.25

Vibration and bump

∆R %

0.1

Insulation resistance

ohms

> 1G

Voltage proof

volts

400 min

Precision Metal

Film Resistors

PR series

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

183

Issue C · 04.03

Welwyn Components

Performance Data

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.

52

6

6

5

≤ 1.4 mm

Standard Quantities Per Package

Type

PR4

PR5

Large ammo pack

5000

2500

PR_C.qxd

1/5/03

8:58 am

Page 2