Fusible Carbon

Film Resistor

FC4

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

Issue B · 03.02

Welwyn Components

167

Packaging

All FC 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.

Lead formed resistors can also be supplied. Standard

options of Lancet, Radial and Goalpost forming are shown

in Lead Form Information section.

Alternative packaging available by request.

52

6

6

5

≤ 1.4 mm

GRAPH 1 FUSING CHARACTERISTICS (constant voltage)

Applied power (watts)

0.1

3.5

5

10

15

0.5

1.0

2.0

5.0

10

20

30

40

50

100

GRAPH 2

MAXIMUM FUSING VOLTAGE

Resistance value (ohms)

1

10

100

1k

300

280

260

240

220

200

180

160

140

120

100

80

60

40

20

0

Maximum

1.0 - 1k

∆ R%

0.2

Load 1000 hrs at 70°C

>1k to 5.1k

0.8

Derating from rated power at 70°C

zero at 125°C

Climatic

∆R%

0.5

Climatic category

40/125/56

Temperature rapid change

∆R%

0.25

Resistance to solder heat

∆R%

0.5

Vibration and bump

∆R%

0.1

Isolation resistance

ohms

>1G

Performance Data

Type

FC4

Ammo pack

5000

Standard Quantities Per Package

Graph 1

Fusing Characteristics (constant voltage)

Graph 2

Maximum Fusing Voltage