Fusible Metal Film

Resistors

FA8025 series

FA8225

FA8325

FA8425

5

.

1

5

.

0

5

2

.

0

s

t

t

a

w

C

˚

0

7

t

a

g

n

i

t

a

r

r

e

w

o

P

k

2

2

-

5

1

R

0

k

7

2

-

1

R

0

k

0

1

-

1

R

0

s

m

h

o

e

g

n

a

r

e

c

n

a

t

s

i

s

e

R

0

0

5

0

5

3

0

5

2

s

t

l

o

v

e

g

a

t

l

o

v

t

n

e

m

e

l

e

g

n

i

t

i

m

i

L

0

5

2

0

5

2

0

5

2

C

˚

/

m

p

p

R

C

T

5

%

e

c

n

a

r

e

l

o

t

e

c

n

a

t

s

i

s

e

R

Standard values

E24 preferred

0

9

0

2

1

0

5

1

t

t

a

w

/

C

˚

e

c

n

a

d

e

p

m

i

l

a

m

r

e

h

T

5

5

1

o

t

5

5

-

C

˚

e

g

n

a

r

e

r

u

t

a

r

e

p

m

e

t

t

n

e

i

b

m

A

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.

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

Electrical Data

Issue B · 03.02

A subsidiary of

TT electronics plc

Welwyn Components

153

Construction

The metal film is deposited on a high purity ceramic rod. End

caps are force fitted and termination wires welded to the

caps. The resistive film is adjusted to the required value by a

helical cut; finally the cement protection is applied to the

resistor body and marked with indelible ink.

Terminations

Material

Solder-coated copper wire.

Strength

The terminations meet the requirements of

IEC 68.2.21.

Solderability

The terminations meet the requirements of

IEC 115-1, Clause 4.17.3.2.

Marking

Resistors are colour coded with five bands. Four of the bands

are used to indicate value and tolerance, with IEC 62 colours

being used. On FA8325 and FA8425 types a fifth yellow band

denotes constant voltage fusibility.

Solvent Resistance

The body protection and marking are resistant to all normal

industrial cleaning solvents suitable for printed circuits.

Flammability

The resistors will not burn or emit incandescent particles

under any condition of applied temperature or power

overload.

Dimensions (mm) & Weight (g)

PCB

Min.

mounting

bend

Type

L max

D max

f min

d nom

centres

radius

Wt. nom

FA8225

6.2

2.3

21

0.6

10.2

0.6

0.3

FA8325

9.0

3.4

19.6

0.8

12.7

1.2

0.6

FA8425

14.5

5.1

23.8

0.8

20.3

1.2

1.1

Physical Data

L

D

f

d dia

2.5

Issue C · 01.07