Document Number: 28733

For technical questions contact: ff3dresistors@vishay.com

www.vishay.com

Revision: 24-Feb-04

1

VR37

Vishay BCcomponents

High Ohmic/High Voltage Resistors

FEATURES

• These resistors meet the safety requirements of:

“UL1676” (range 510 kΩ to 11 MΩ)

”IEC 60065”

”EN60065”

“BS60065” (U.K.)

“VDE 0860” (Germany)

“CQC” (China)

• High pulse loading capability

• Small size.

APPLICATIONS

• Where high resistance, high stability and high reliability at

high voltage are required

• Safety component in combination with high voltage

• White goods

• High humidity environment

• Power supplies.

A metal glazed film is deposited on a high grade ceramic

body. After a helical groove has been cut in the resistive

layer, tinned electrolytic copper wires are welded to the

end-caps. The resistors are coated with a light blue lacquer

which

provides

electrical,

mechanical,

and

climatic

protection.

The encapsulation is resistant to all cleaning solvents in

accordance

with

“MIL-STD 202E,

method 215”

and

“IEC 60068-2-45”.

Note

1. Ohmic values (other than resistance range) are available upon request.

TECHNICAL SPECIFICATIONS

DESCRIPTION

VALUE

100 kΩ to 33 MΩ

Resistance tolerance and series

± 1 %: E24/E96 series;

± 5 %: E24 series

0.5 W

120 K/W

Temperature coefficient

Maximum permissible voltage:

DC

3500 V

RMS

2500 V

Dielectric withstanding voltage of the insulation for 1 minute

700 V

Basic specifications

IEC 60115-1B

Safety requirements

UL1676 (510 kΩ to 11 MΩ); EN60065; BS60065; VDE 0860;

NFC 92-130

Climatic category (IEC 60068)

55/155/56

Stability after:

load (1000 hours)

∆R/R max.: ± 1.5 % + 0.1 Ω

accelerated damp heat test (6 days)

∆R/R max.: ± 1.5 % + 0.1 Ω

long term damp heat test (56 days)

∆R/R max.: ± 1.5 % + 0.1 Ω

Noise

max. 2.5 µV/V

12NC ORDERING CODE INDICATING RESISTOR TYPE AND PACKAGING

TYPE

TAPE

WIDTH

(mm)

TOL.

(%)

ORDERING CODE 2322 242 .....

BANDOLIER IN AMMOPACK

BANDOLIER ON REEL

1000

units

5000

units

VR37

52

± 1

8....

6....

± 5

13...

23...