RTO50 Datasheet, PDF (1/4 Pages) Vishay Siliconix – Power Resistor, Thick Film Technology

RTO 50
Vishay Sfernice
Power Resistor, Thick Film Technology
FEATURES
• 50 Watt at 25°C Heatsink Mounted
• Adjusted by sand trimming
• Leaded or surface mount versions
• High power to size ratio
• Non inductive element
Because of the knowledge and experience in Thick Film technology, Vishay Sfernice has been able to develop a high power
resistor in a TO 220 package called RTO 50. The special design of this component allows the dissipation of 50W when mounted
on a heatsink. The ohmic value is adjusted by sand trimming. This process does not generate hot spots as in laser trimming,
which could lead to microcracks on each side of the curve. This process improves the reliability and the stability of the resistor
and at the same time gives a good overload capability.
DIMENSIONS in millimeters
RTO 50F - LEADED
RTO 50C - FOR SURFACE MOUNTING
10.1
Ø 3.6
4.5
1.3
10.1
Ø 3.6
4.5
1.3
12.5 ¹⁵
8.8
13.7
Ø 0.8
2.5
5.08
MECHANICAL SPECIFICATIONS
Mechanical Protection
Molded
Resistive Element
Thick Film
Connections
Tinned copper alloy
Weight
2g max.
DIMENSIONS
Standard Package
TO 220
Insulated Case
ENVIRONMENTAL SPECIFICATIONS
Temperature Range
- 55°C to + 155°C
Climatic Category
55/155/156
Sealing
Sealed container
Solder immersion
12.5 ¹⁵
1.8
5.08
8.8
2
3
0.3
• Tolerance unless otherwise specified: ± 0.4mm
ELECTRICAL SPECIFICATIONS
Resistance Range
0.010Ω to 1MΩ
Tolerances Standard
± 1% to ± 10%
Dissipation and Associated
Onto a heatsink
Thermal Resistance
and Nominal Power
50W at + 25°C
RTH (j-c): 2.6°C/W
free air:
2.25W at + 25°C
Temperature Coefficient
See Performance table
Standard
± 150ppm/°C
Limiting Element Voltage
300V
Dielectric Strength
MIL STD 202 (301)
Insulation Resistance
2000VRMS - 1 Minute - 10mA Max
≥ 10⁶ MΩ
Inductance
≤ 0.1 µH
Critical Resistance
1.8 kΩ
Document Number: 50035
Revision 14-Jan-05
For technical questions, contact [e-mail]
www.vishay.com
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