MELF

Resistors

WRM Series

www.bitechnologies.com www.irctt.com www.welwyn-tt.com

General Note

TT electronics reserves the right to make changes in product specification without notice or liability.

All information is subject to TT electronics’ own data and is considered accurate at time of going to print.

© TT electronics plc

09.13

Dimensions (mm) and weight (g)

Type

L

D

K

Weight

max

max

max

min

WRM 0102

2.2

1.35

1.3

0.3

0.01

WRM 0204

3.7

1.55

1.55

0.5

0.02

WRM 0207

6.1

2.4

2.4

0.5

0.08

MELF

Resistors

WRM Series

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

WRM 0102

WRM 0204

WRM 0207

4

.

0

5

2

.

0

125

.

0

s

t

t

a

w

C

°

0

7

t

a

g

n

it

a

r

r

e

w

o

P

M

10

–

2

2

R

M

5 1

–

R22

4R7 - 110K

s

m

h

o

e

g

n

a

r

e

c

n

a

t

s

i

s

e

R

0

5

2

0

0

2

0

5

1

s

tl

o

v

e

g

a

tl

o

v

t

n

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m

e

l

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n

it

i

m

i

L

0, 100

5

,

5

2

0, 100

5

,

5

2

,

5

1

,

5

0

5

C

°

/

m

p

p

R

C

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5

,

2

,

0

.

1

,

5

.

0

,

5

2

.

0

1

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1

.

0

%

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R

Standard values

E24 & E96

0

4

1

0

0

2

0

5

2

W

/

k

e

c

n

a

d

e

p

m

i

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a

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5

2

1

+

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5

5

-

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°

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g

n

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0

1

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I

10

Electrical Data

Physical Data

01. 11

A subsidiary of

TT electronics plc

Welwyn Components

L

K

D

Construction

A metal film is deposited onto a high dissipation ceramic

former to which tin plated teminating caps are fitted.

The resistor is adjusted to value by a helical cut in the film

and the body is protected by a lacquer coating.

Marking

Resistance values are colour coded with four bands,

three indicating value and one indicating the multiplier.

(Note this describes standard marking, but certain values

may still be supplied with the addition of a tolerance band

following the multiplier.)

Terminations

Material

Plated steel cap.

Solderability The pure tin finish produces ageing free

contacts on which low melting solders can

be used. Dipped area shall be covered with

a smooth and bright solder coating after

3 seconds immersion at 215°C.

Solvent Resistance

The body protection and marking are resistant to all normal

industrial cleaning solvents suitable for printed circuit boards.

,

0

1

,

5

1