TL Series Datasheet

Modular Heat Sinkable Thick Film Power

The TL Series add heat sinkable options to the thick film resistor family. The resistor element is packaged with plastic insulators, and quickconnect terminals in a symmetrical aluminum profile for easy heat sink mounting. Special tapped configurations are offered to reduce on board component count. Efficient thermal packaging provides improved heat conduction to the heat sink. Self-insulating package design increases voltage withstanding characteristics when compared to traditional aluminum housings. The in line mounting profile makes the TL Series easily adaptable to most heat sink systems. Thermal compound is always recommended when heat sinking.

Features

Very low inductance
Low profile design
In-Line Mounting Profile
1/4” Quick connect terminals
Consult factory for common, isolated,
or special multiple tap options.

Applications

Semiconductor Balancing
Frequency Converters
Snubber
In-Rush Current Limiter
Bleeder Resistor
Power Switching
Voltage Dividers

Specifications

Ultra* Wattage:

35

Std** Wattage:

27

Nominal Power:

18

Surge Load (10 sec.):

72

Max. Voltage between terminals:

1000

Ohm Range:

0.3Ω - 1MΩ

Thermal Resistance Ultra (10% tol.):

1.26

Thermal Resistance Std. (3%-5% tol.):

1.67

Ultra* Wattage:

96

Std** Wattage:

71

Nominal Power:

48

Surge Load (10 sec.):

192

Max. Voltage between terminals:

2000

Ohm Range:

1.0Ω - 2MΩ

Thermal Resistance Ultra (10% tol.):

0.53

Thermal Resistance Std. (3%-5% tol.):

0.70

Ultra* Wattage:

155

Std** Wattage:

114

Nominal Power:

78

Surge Load (10 sec.):

312

Max. Voltage between terminals:

2500

Ohm Range:

1.5Ω - 3MΩ

Thermal Resistance Ultra (10% tol.):

0.34

Thermal Resistance Std. (3%-5% tol.):

0.45

Ultra* Wattage:

215

Std** Wattage:

158

Nominal Power:

108

Surge Load (10 sec.):

432

Max. Voltage between terminals:

2500

Ohm Range:

2.0Ω - 4MΩ

Thermal Resistance Ultra (10% tol.):

0.25

Thermal Resistance Std. (3%-5% tol.):

0.33

Ultra* Wattage:

275

Std** Wattage:

202

Nominal Power:

137

Surge Load (10 sec.):

548

Max. Voltage between terminals:

2500

Ohm Range:

2.0Ω - 4MΩ

Thermal Resistance Ultra (10% tol.):

-

Thermal Resistance Std. (3%-5% tol.):

-

* For properly heat sinked, untrimmed resistors - see chart
** For properly heat sinked, trimmed resistors - see chart
† Power Ratings are theoretical. Consult Factory for details.

Characteristics

1200 VAC

2500 VAC

Thick Film on Alumina

Aluminum

Glass reinforced high temperature Valox®

Tinned brass

27 – 275 watts

0.3Ω – 4MΩ

Ultra Power (U Style): ±10% std.Standard Power: ±10% std.; 5% and 1% available

±250 PPM

1200 VAC

12mm

-40°C to +125°C

>1002 MΩ/500V

7mm

50-100 nH

THIS PRODUCT IS DESIGNED FOR USE WITH PROPER HEATSINKING.

Maximum base plate temperature of the resistor must be monitored and kept within specified limits to establish the power rating. Best technique is to attach a thermocouple to the side of the base plate of the resistor. Temperature of plastic housing or heat sink cannot be used to establish rating of the resistor.