C&H Technology RTOP - Manual (Page 2)

www.vishay.com For technical questions, contact: [email protected] Document Number: 50045
1 Revision: 14-Nov-08
RTOP
Vishay Sfernice
Power Resistor for Mounting onto a Heatsink
Thick Film Technology
FEATURES
• 1 % tolerance available
• High power rating = 200 W
• Wide ohmic value range = 0.046 to 1 MΩ
• Non inductive
• Easy mounting
• Low thermal radiation of the case
• Standard Isotop case (SOT 227 B)
This series of thick film power resistors include modules which can incorporate up to 2 different resistor values in the same
SOT 227B package. Two types of terminations are available along with a 4 terminal device for measurement applications in the
case of the single resistor version. This product range benefits from Vishay Sfernice’s experience in thick film power resistor
technology i.e. high power: volume ratio, low tolerance or individual resistors and excellent overload capabilities (due to the
trimming technique).
DIMENSIONS in millimeters
RTOP
• Tolerances unless otherwise specified: ± 0.3 mm
MECHANICAL SPECIFICATIONS
Mechanical Protection Insulated case
Substrate Alumina on insulated base
Resistive Element Cermet
End Connections V connections: screw M4 x 6
Tightening Torque Connections 1 Nm
Tightening Torque Heatsink
2 Nm
Weight 30 g max.
ENVIRONMENTAL SPECIFICATIONS
Temperature Range - 55 °C to + 125 °C
Climatic Category 55/125/56
RoHS
COMPLIANT
12.6
10
4
16 30 39
12.6
25
Ø 4.2
V Connections
ELECTRICAL SPECIFICATIONS
Resistance Range 0.046 to 1 M Ω
Standard Tolerance ± 1 % to ± 10 %
Power Rating
50 W to 200 W
at + 25 °C
Temperature Coefficient
(- 55 °C to + 125 °C)
Standard
± 300 ppm/°C (R < 1)
± 150 ppm/°C (R > 1)
Insulation Resistance > 10 6 M
Ω