TL Series
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 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.
F e aT u r e S
a P P L I C aT I O N S
• 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.
• Semiconductor Balancing
• Frequency Converters
• Snubber
• In-Rush Current Limiter
• Bleeder Resistor
• Power Switching
• Voltage Dividers
S e r I e S S P e C I F I C aT I O N S
Series
TL54
TL71
TL88
TL104
†TL122
* For properly heat sinked, untrimmed resistors - see chart
** For properly heat sinked, trimmed resistors - see chart
† Power Ratings are theoretical. Consult Factory for details.
Ultra*
Wattage
35
96
155
215
275
Std**
Wattage
27
71
114
158
202
Nominal Surge Load
Max. Voltage
Power (10 sec.) between terminals
18
72
1000
48
192
2000
78
312
2500
108
432
2500
137
548
2500
Ohm
Range
0.3Ω
- 1MΩ
1.0Ω - 2MΩ
1.5Ω - 3MΩ
2.0Ω - 4MΩ
2.0Ω - 4MΩ
Thermal Resistance
Ultra
Std.
(10% tol.) (3%-5% tol.)
1.26
1.67
0.53
0.70
0.34
0.45
0.25
0.33
CharaCTerISTICS
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.
(continued)
158
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
TL Series
TL54
40
Ultra Power
Modular Heat Sinkable Thick Film Power
P O w e r r aT I N g S
Maximum and nominal power ratings for Ultra Power and Standard Power resistors
TL104
250
Ultra Power
200
Standard Power
Wattage
150
Nominal Ultra Power
100
50
0
Nominal Standard Power
TL71
120
100
Ultra Power
30
Wattage
Standard Power
TL54
TL104
Wattage
TL71
80
60
40
20
0
Standard Power
Nominal Ultra Power
Nominal Standard Power
20
Nominal Ultra Power
Nominal Standard Power
10
0
0
20
40
60
80
100
Heat sink temp,
ϒ
C
120
140
160
0
20
40
60
80
100
Heat sink temp,
ϒ
C
120
140
160
0
20
40
60
80
100
Heat sink temp,
ϒ
C
120
140
160
TL122
300
250
200
Wattage
150
100
50
0
Standard Power
Ultra Power
TL88
180
160
Ultra Power
TL122
Wattage
140
120
100
80
60
40
20
Nominal Ultra Power
Nominal Standard Power
Standard Power
TL88
Nominal Ultra Power
Nominal Standard Power
0
20
40
60
80
100
Heat sink temp,
ϒ
C
120
140
160
0
0
20
40
60
80
100
Heat sink temp,
ϒ
C
120
140
160
O r d e r I N g I N F O r m aT I O N
E = RoHS compliant
dImeNSIONS
A
B
0.20"
5.10 mm
C*
0.25"
6.3 mm
TL104K–––
TL122K–––
TL104KUR500CE
Tolerance Power
Size
TL54 = 54 mm F = 1% U = ultra
TL71 = 71 mm J = 5%
(optional)
TL88 = 88 mm K = 10%
TL104 = 104 mm
TL122 = 122 mm
Ohms
R500 =
10R0 =
1K00 =
1M00 =
Center tap
0.50
(optional)
10.0
1,000
1,000,000
Profile 1.01"
25.7 mm
0.98"
25 mm
Footprint
0.96" ±0.015
24.4 mm
TL88
88
80
50.7
44
TL104 TL122
104
96
67.6
55
122
114
84.5
65
Standard part numbers
Ohmic value
Ohmic value
TL104K–––
TL122K–––
TL54K–––
TL71K–––
TL88K–––
TL54K–––
Part No.
Prefix
Suffix
–––
R50
–––
1R0
–––
1R5
–––
2R0
–––
3R0
–––
4R0
–––
5R1
–––
10R
–––
15R
–––
22R
–––
47R
–––
75R
–––
100
–––
150
–––
220
Part No.
Prefix
Suffix
–––
240
–––
470
–––
510
–––
750
–––
1K0
–––
1K1
–––
2K2
–––
4K7
–––
5K1
–––
10K
–––
22K
–––
51K
TL71K–––
TL88K–––
*For adjacent taps,
C = 0.665"
(16.9mm)
TL54
A
B
C
Weight
mm
mm
mm
g
54
46
16.9
26
TL71
71
63
33.8
33
0.5
1.0
1.5
2.0
3.0
4.0
5.1
10.0
15.0
22.0
47.0
75.0
100.0
150.0
220.0
240.0
470.0
510.0
750.0
1,000.0
1,100.0
2,200.0
4,700.0
5,100.0
10,000.0
22,000.0
51,000.0
Consult factory for multiple tap options in common, iso-
lated, and special configurations.
= Standard values
= Non-standard values subject to
minimum handling charge per
item
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159
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