C&H Technology RPS250 User Manual
6121 Baker Road,
Suite 108
Minnetonka, MN 55345
www.chtechnology.com
Phone (952) 933-6190
Fax (952) 933-6223
1-800-274-4284
Thank you for downloading this document from C&H Technology, Inc.
Please contact the C&H Technology team for the following questions -
Technical ● Application ● Assembly ● Availability ● Pricing
Phone – 1-800-274-4284
E-Mail – sales@chtechnology.com
www.chtechnology.com - SPECIALISTS IN POWER ELECTRONIC COMPONENTS AND ASSEMBLIES
-
www.chtechnology.com
RPS 250
Vishay Sfernice
Power Resistor for Mounting onto a Heatsink
Thick Film Technology
FEATURES
• High power rating: 250 W
• High overload capability up to 4 times nominal
power (see energy curve)
• Easy mounting
• Low thermal radiation of the case
Developed for specific applications such as railroad electrical traction, this series can bear short overloads as high as fifteen times
the nominal power. Designed to be mounted onto a heatsink, these power resistors exhibit remarkable characteristics.
DIMENSIONS in millimeters
RPS 250D
5
.
7
. 5
0
1
± 1
26
16.5
Ø 7.2
0 6
1 2 Ø
• Tolerance unless stated: ± 0.2 mm
MECHANICAL SPECIFICATIONS
Mechanical Protection Insulated case
Substrate Alumina onto
aluminum base
Resistive Element Cermet
Ø 4.2
ELECTRICAL SPECIFICATIONS
Resistance Range
Tolerances
Power Rating chassis mounted
End Connections Screws M4, (M5 on
request)
Temperature Coefficient
Tightening Torque on connections 2 Nm
Weight 170 g ± 10 %
ENVIRONMENTAL SPECIFICATIONS
Thermal Resistance RTH (j-c) 0.22 °C/W
Temperature Range - 55 °C + 125 °C
Climatic Category 55/125/56
Document Number: 50007 For technical questions, contact: sfer@vishay.com
Revision: 24-Nov-08 31
Limiting Element Voltage U
Dielectric Strength
MIL STD 202 (301), 1 min, 10 mA max.
Insulation Resistance
Inductance
Capacitance Resistor/
ground
73
56
57
34
250 W
1000 W
Standard
8 . 5 3
2 M4 USEFUL DEPTH: 8
L
0.24 Ω to 1M E24 series
± 1 % to ± 10 %
at 50 °C continuous
at 25 °C for 10 s
± 250 ppm/°C < 1
± 150 ppm/°C > 1
5 kVRMS
L connections 7 kVRMS
H connections 12 kVRMS
> 106 MΩ
< 50 nH
< 40 pF
< 120 pF
www.vishay.com
Loading...