For technical questions, contact sfer@vishay.com

Document Number: 50050

Revision 26-Mar-07

www.vishay.com

14

LTO 50

Vishay Sfernice

Power Resistor Thick Film Technology

features

• 50 Watt at 25 °C Case Temperature Heatsink

Mounted

• Direct mounting ceramic on heatsink

• Broad Resistance Range: R010 to 550K

• Non Inductive

• TO-220 package: Compact and easy to mount

• RoHS compliant

• Isolated case

• Tolerance unless otherwise specified: ± 0.3 mm

dimensions in millimeters

mechanical specifications

Mechanical Protection

Molded

Resistive Element

Thick Film

Substrate

Alumina

Connections

Tinned Copper

Weight

2 g max.

Mounting Torque

1 N-m

dimensions

Standard Package

TO-220

Isolated case

environmental specifications

Temperature Range

- 55 °C to + 150 °C

Climatic Category

55/155/56

Resistance Range

0.010 Ω to 550 kΩ

Tolerances (Standard)

± 1 % to ± 10 %

Dissipation and Associated

Onto a heatsink

Power Rating

50 W at + 25 °C (case temperature)

and Thermal Resistance

of the component

free air:

2.5 W at + 25 °C

Temperature Coefficient

See Performance table

Standard

± 150 ppm/°C

Limiting Element Voltage

250 V

Dielectric Strength

MIL STD 202

Insulation Resistance

Inductance

≤ 0.1 μH

Critical Resistance

1.25 kΩ

electrical specifications

3.2

16.2

10.4

1.8

5.08

0.6

3.5

1.3

0.8

12.7

Ø3.2

3.2

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.

RoHS

COMPLIANT