LTO 50
Vishay Sfernice
Power Resistor Thick Film Technology
features
• 50 Watt at 25 °C Case Temperature Heatsink
RoHS
Mounted
COMPLIANT
• Direct mounting ceramic on heatsink
• Broad Resistance Range: R010 to 550K
• Non Inductive
• TO-220 package: Compact and easy to mount
• RoHS compliant
LTO series are the extension of RTO types.We used the direct
ceramic mounting design (no metal tab) of our RCH power
resistors applied to semiconductor packages.
• Isolated case
dimensions in millimeters
.ꢀ2
10ꢀ4
.ꢀ2
16ꢀ2
Ø.ꢀ2
1ꢀ.
.ꢀ5
12ꢀ7
0ꢀ8
0ꢀ6
1ꢀ8
• Tolerance unless otherwise specified: 0ꢀ. mm
5ꢀ08
mechanical specifications
electrical specifications
Mechanical Protection
Resistive Element
Substrate
Molded
Resistance Range
0.010 Ω to 550 kΩ
Thick Film
Alumina
Tolerances (Standard)
Dissipation and Associated
1 ꢀ to 10 ꢀ
Onto a heatsink
Power Rating
and Thermal Resistance
of the component
50 W at + 25 °C (case temperature)
RTH (j-c): 2.5 °C/W
free air:
Connections
Tinned Copper
2 g max.
Weight
2.5 W at + 25 °C
Mounting Torque
1 N-m
Temperature Coefficient
See Performance table
150 ppm/°C
Standard
dimensions
Standard Package
Limiting Element Voltage
250 V
TO-220
Isolated case
Dielectric Strength
MIL STD 202
1500 VRMS - 1 minute - 10 mA max.
Insulation Resistance
Inductance
≥ 104 MΩ
≤ 0.1 μH
1.25 kΩ
environmental specifications
Temperature Range
- 55 °C to + 150 °C
Critical Resistance
Climatic Category
55/155/56
www.vishay.com
14
Document Number: 50050
Revision 26-Mar-07
For technical questions, contact sfer@vishay.com