Flameproof Metal

Film Resistors

FA Series

• Approval to BS CECC 40101-019

and 40101-024

• Resistance range 0.1 ohm to 1M ohm

• Flameproof protection

FA025

FA05

FA1

FA94

Power rating at 70°C

watts

0.5

1.0

1.5

2.0

Resistance range

ohms

0R1 to 1M

0R1 to 1M

0R1 to 1M

2R6 to 1M0

Limiting element voltage

volts

350

350

500

700

Isolation voltage

volts

500

500

700

1000

TCR

ppm/°C

150

Resistance tolerance

%

≤1 ohm: 5, 10 >1 ohm: 1

Ambient temperature range

°C

-55 to 155

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

Electrical Data

* Approved CECC 40101-019 / 40101-024

FX

EX

DX

CX

Power rating at 70°C

watts

0.25

0.5

1.0

2.0

Resistance range

ohms

1 to 1M

1 to 1M

1 to 1M

10 to 100k

Limiting element voltage

volts

250

350

500

700

Isolation voltage

volts

500

700

1000

1400

**TCR

ppm/°C

250

Resistance tolerance

%

1

Ambient temperature range

°C

-55 to 125

Standard values

E24 preferred

0

6

0

9

0

1

1

0

4

1

t

t

a

w

/

C

°

e

c

n

a

d

e

p

m

i

l

a

m

r

e

h

T

Issue B · 03.02

A subsidiary of

TT electronics plc

Welwyn Components

145

*These specicatios are identical except that BS CECC 40101-024 includes ammability tests.

**Specication TCR - actual TCR as for commercial.

L

D

f

d

Dimensions (mm) & Weight (g)

PCB

Min.

mounting

bend

Type

L Max

D Max

f min

d nom

centres

radius

Wt.nom

FA025

6.2

2.5

21.0

0.6

10.2

0.6

0.3

FA05

9.0

3.6

19.6

0.8

12.7

1.2

0.5

FA1

14.5

5.3

23.6

0.8

20.3

1.2

1.1

FA94

13.1

5.9

29.5

0.8

19.5

1.2

1.1

Physical Data

OBSOLETE