Document Number: 50045

Revision 14-Jan-05

www.vishay.com

28

RTOP

Vishay Sfernice

For technical questions, contact sfer@vishay.com

MODEL

RTOP 200

RTOP 100

DRTOP 100

DRTOP 50

Power Rating at + 25°C

chassis mounted resistors

200W

100W

100W

50W

unmounted resistors

5W

5W

3.5W

3.5W

Thermal Resistance (per resistor)

0.5°C/W

1°C/W

0.5°C/W

1°C/W

Limiting Voltage

1500V

1500V

500V

500V

Dielectric Strength*

2500V, 1 Minute

2500V, 1 Minute

2500V, 1 Minute

2500V, 1 Minute

connections/chassis

10mA Max

10mA Max

10mA Max

10mA Max

Dielectric Strength*

-

-

2500V, 1 Minute

2500V, 1 Minute

connections/resistors

10mA Max

10mA Max

Ohmic Value Range

0.046 to 1MΩ

0.092 to 1MΩ

Tolerance

± 1% to ± 10%

± 1% to ± 10%

Electrical Diagrams

R

R

R2

R1

SPECIAL FEATURES

Shunt Version

TESTS

CONDITIONS

TYPICAL DRIFTS

Momentary Overload

NF EN 140000 CEI 115_1

< ± (0.25% + 0.05Ω)

2.5Pn/5 seconds

Rapid Temperature Change

NF EN 140000 CEI 68214 Test Na

< ± (0.25% + 0.05Ω)

5 cycles - 55°C +125°C

Load Life

NF EN 140000 CEI 115_1

< ± (0.5% + 0.05Ω)

Pn at 25°C 1000 hours

Humidity (steady state)

MIL STD 202 Method 103 B Test D

< ± (0.5% + 0.05Ω)

56 days 95% R.H.

PERFORMANCE

Power Resistors for Mounting onto a Heatsink

Thick Film Technology

*MIL STD 202 Method 301