High Voltage

Thick Film Resistors

VRW Series

Features

VRW37 meets requirements of BS / EN / IEC 60065

High working voltage to 10kV in compact size

High ohmic range to 68M

High pulse load capability

Robust flameproof coating material

Surface mount ZI-form option

High Voltage

Thick Film Resistors

VRW Series

• VRW37 meets the requirements of BS / EN /

IEC 60065

• High working voltage to 10kV in compact

size

• High ohmic range to 68M

• High pulse load capability

• Robust flameproof coating material

• RoHS compliant

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

Issue C · 07.06

A subsidiary of

TT electronics plc

Welwyn Components

70

7

3

W

R

V

5

2

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1, 5

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Standard Values

E24 or E96

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Physical Data (Dimensions (mm) & Weight (g)

Type

L

D

f

d

PCB

Min

Wt.

Max

Max

min

Nom

mount

bend

nom

centres

radius

VRW25

VRW37

VRW68

L

D

f

d

Construction

Resistive thick film material is applied to high-grade ceramic

rods. Tin-plated steel caps are force fitted and the

termination wires are welded to the caps. The value is

obtained by a helical cut in the film and finally the resistor

body is protected by a cement coating.

Marking

1% tolerance resistors are colour coded with 5 bands. 2%

and 5% tolerance have 4 bands. IEC62 colours are used.

Terminations

Material:

Hot tin dipped 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

Solvent Resistance

The body protection and marking are resistant to all normal

industrial cleaning solvents suitable for printed circuits.

Flammability

The resistor coating will not burn under any condition of

applied temperature or power overload.

05.08

VRW68

1.0

100K to 68M

10000

70

6.2

2.5

21

0.6±0.05

10.2

0.6

0.3

9.0

3.7

19.6

0.8±0.05

12.5

1.2

0.5

15.5

5.0

27

0.8±0.05

20.3

1.2

1.15

d

All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)

All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)

10.24

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

www.ttelectronics.com/resistors

BI Technologies IRC Welwyn