RPS 250

Power Resistor for Mounting onto a Heatsink

Thick Film Technology

Vishay Sfernice

Document Number: 50007

For technical questions, contact: sfer@vishay.com

www.vishay.com

Revision: 08-Jun-06

33

OVERLOADS

In any case the applied voltage must be lower than 2.5 Un. U maxi < 2.5 Un < 12 500 V.

Short time overload: 4 Pn/10 seconds

Accidental overload: The values indicated on the graph below are applicable to resistors in air or mounted onto a heatsink.

ENERGY CURVE

POWER RATING CHART

The temperature of the heatsink should be maintained in the limit specified.

To improve the thermal conductivity, surfaces in contact should be coated with a silicone grease.

MARKING

Series, style, ohmic value (in

Ω), tolerance in %, manufacturing date, VISHAY trademark

ORDERING INFORMATION

RPS

250

DL

250U

1 %

ZA3

B015

e

MODEL

STYLE

CONNECTIONS

Optional

H: dielectric strength 12 kV

L: dielectric strength 7 kV

RESISTANCE VALUE

TOLERANCE

Optional

± 1 %

± 2 %

± 5 %

± 10 %

CUSTOM DESIGN

Options on request

special TCR,

shape, etc.

PACKAGING

LEAD

(Pb)-FREE

SAP PART NUMBERING GUIDELINES

RPS

0250

DL

2500

F

B

ZA3

MODEL

STYLE

CONNECTIONS

OHMIC VALUE

TOLERANCE

PACKAGING

DESIGN

OVERLOAD DURATION IN SECONDS

1 µs

0.13

1

10

100

1000

10 000

10 µs

100 µs

1 ms

1 s

10 ms

100 ms

0

20

40

60

80

100

120

140

HEATSINK TEMPERATURE IN DEGREES CELSIUS

0

20

40

60

80

100

Packaging Box of 15 units