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158
TL Series
Modular Heat Sinkable
Thick Film Power
Thermal Resistance
Ultra* Std** Nominal Surge Load Max. Voltage Ohm Ultra Std.
Series Wattage Wattage Power (10 sec.) between terminals Range (10% tol.) (3%-5% tol.)
TL54 35 27 18 72 1000 0.3Ω - 1MΩ 1.26 1.67
TL71 96 71 48 192 2000 1.0Ω - 2MΩ 0.53 0.70
TL88 155 114 78 312 2500 1.5Ω - 3MΩ 0.34 0.45
TL104 215 158 108 432 2500 2.0Ω - 4MΩ 0.25 0.33
†TL122 275 202 137 548 2500 2.0Ω - 4MΩ
* For properly heat sinked, untrimmed resistors - see chart
** For properly heat sinked, trimmed resistors - see chart
† Power Ratings are theoretical. Consult Factory for details.
Operating voltage 1200 VAC
Dielectric Withstanding Voltage 2500 VAC
Resistive Element Thick Film on Alumina
Housing Aluminum
Insulators Glass reinforced high temperature Valox®
Terminals Tinned brass
Power Range 27 – 275 watts
Resistance Range 0.3Ω – 4MΩ
Tolerance Ultra Power (U Style): ±10% std.
Standard Power: ±10% std.; 5% and 1% available
Temperature Coefficient ±250 PPM
Test Voltage for 1 Minute 6000 VDC/2500 VAC
Working Voltage 1200 VAC
External Creeping Distance 12mm
Temperature Limits -40°C to +125°C
Insulation >1002 MΩ/500V
Air Distance, Terminal to Ground 7mm
Inductance 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.
The TL Series add heat sinkable options to the
thick film resistor family. The resistor element
is packaged with plastic insulators, and quick-
connect 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 ter-
minals
Consult factory for
common, isolated, or
special multiple tap
options.
SERIES SPECIFICATIONS
APPLICATIONS
Semiconductor Balancing
Frequency Converters
Snubber
In-Rush Current Limiter
Bleeder Resistor
Power Switching
Voltage Dividers
CHARACTERISTICS
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com 159
TL Series
Modular Heat Sinkable Thick Film Power
POWER RATINGS
Maximum and nominal power ratings for Ultra Power and Standard Power resistors
DIMENSIONSORDERING INFORMATION
TL54 TL71
TL88
TL104
TL122
Wattage
Heat sink temp, ϒC
020406080 100 120 140 160
100
0
TL104
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
150
200
250
50
Wattage
Heat sink temp, ϒC
020406080 100 120 140 160
40
0
20
30
10
TL54
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
Wattage
Heat sink temp, ϒC
020406080 100 120 140 160
120
0
80
100
20
TL71
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
60
40
Wattage
Heat sink temp, ϒC
020406080 100 120 140 160
100
0
TL122
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
150
200
300
50
250
Wattage
Heat sink temp, ϒC
020406080 100 120 140 160
120
0
80
100
20
TL88
Ultra Power
Standard Power
Nominal Ultra Power
Nominal Standard Power
60
40
140
160
180
TL104K–––
Ohmic value
TL54K–––
TL71K–––
TL88K–––
TL122K–––
Part No.
Prefix
Suffix
TL104K–––
Ohmic value
TL54K–––
TL71K–––
TL88K–––
TL122K–––
Part No.
Prefix
Suffix
= Standard values
= Non-standard values subject to
minimum handling charge per
item
TL104KUR500CE
Size
TL54 = 54 mm
TL71 = 71 mm
TL88 = 88 mm
TL104 = 104 mm
TL122 = 122 mm
Tolerance
F= 1%
J=5%
K= 10%
Power
U = ultra
(optional)
Center tap
(optional)
Ohms
R500 = 0.50
10R0=10.0
1K00 = 1,000
1M00 = 1,000,000
E = RoHS compliant
0.5 ––– R50 
1.0 ––– 1R0  
1.5 ––– 1R5 
2.0 ––– 2R0   
3.0 ––– 3R0  
4.0 ––– 4R0   
5.1 ––– 5R1   
10.0 ––– 10R   
15.0 ––– 15R  
22.0 ––– 22R   
47.0 ––– 47R   
75.0 ––– 75R   
100.0 ––– 100   
150.0 ––– 150   
220.0 ––– 220   
240.0 ––– 240  
470.0 ––– 470   
510.0 ––– 510  
750.0 ––– 750   
1,000.0 ––– 1K0   
1,100.0 ––– 1K1   
2,200.0 ––– 2K2   
4,700.0 ––– 4K7   
5,100.0 ––– 5K1    
10,000.0 ––– 10K    
22,000.0 ––– 22K    
51,000.0 ––– 51K   
0.20"
5.10 mm
A
B
0.98"
25 mm
Profile 1.01"
25.7 mm
C*
0.25"
6.3 mm
*For adjacent taps,
C = 0.665"
(16.9mm)
Footprint
0.96" ±0.015
24.4 mm
TL54 TL71 TL88 TL104 TL122
A mm 54 71 88 104 122
B mm 46 63 80 96 114
C mm 16.9 33.8 50.7 67.6 84.5
Weight g 26 33 44 55 65
Consult factory for multiple tap options in common, iso-
lated, and special configurations.
Standard part numbers
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Ohmite:
TL88K3R00E TL54K1R0E TL71K15RE TL54K220E TL71K2R0E TL122K75RE TL104K470E TL122K47RE
TL71K220E TL104K1K0E TL88K75RE TL122K1R00 TL104K510E TL104K1R0E TL122K4R0E TL71K150E
TL71K100E TL122K22RE TL71K470E TL104K750E TL104K1K1E TL104K3R0E TL71K510E TL88K3R00
TL71K75RE TL54K47RE TL54K1K1E TL88K1R0E TL54K22RE TL104K75RE TL122K100E TL122K10RE
TL54K510E TL54K2R0E TL71K1R0E TL88K4R0E TL54K4R0E TL88K750E TL88K220E TL104K100R
TL71K3R0E TL122K750E TL54K470E TL54K240E TL54K10RE TL88K150E TL104K220E TL88K10RE
TL54K150E TL104K150E TL122K1K0E TL54K1K0E TL122K2R0E TL104K22RE TL104F100RE TL88K2R0E
TL104K10RE TL88K5R1E TL54K100E TL88K470E TL122K2K2E TL54K75RE TL54K5R1E TL88K100E
TL88K1K0E TL54K3R0E TL88K1R5E TL88K1K1E TL104K4R0E TL104K5R1E TL104K2K2E TL88K47RE
TL104K240E TL104K100RE TL104K47RE TL88K2K2E TL71K240E TL88K22RE TL104K15RE TL88K510E
TL71K10RE TL104K2R0E TL54K750E TL71K750E TL71K1K0E TL122K470E TL88K15RE TL88K10R0E
TL71K4R0E TL71K22RE TL88K240E TL54K15RE TL122K220E TL54KR50E TL71K1K1E TL71K47RE
TL122KU2R00E TL54K2K2E TL71K5R1E TL71K2K2E