The TL Series add heat sink-
able options to the thick film
resistor family. The resistor
element is packaged with plas-
tic insulators, and quick-con-
nect terminals in a symmetrical
aluminum profile for easy heat
sink mounting. Special tapped
configurations are offered to
reduce on board component
count.
A P P ꢁ ꢂ C A T ꢂ O N S
• Semiconductor Balancing
• Frequency Converters
• Snubber
• In-Rush Current Limiter
• Bleeder Resistor
• Power Switching
• Voltage Dividers
TL Series
Modular Heat Sinkable
Thick Film Power
A
B
0.20"
5.10 mm
S P ꢀ C ꢂ F ꢂ C A T ꢂ O N S
Material
Efficient thermal packag-
ing provides improved heat
conduction to the heat sink.
Self-insulating package design
increases voltage withstanding
characteristics when compared
to traditional aluminum hous-
ings. The in line mounting pro-
file makes the TL Series easily
adaptable to most heat sink
systems. Thermal compound
is always recommended when
heat sinking.
Resistive Element: Thick Film on
Alumina
C*
0.25"
6.3 mm
Profile 1.01"
25.7 mm
Housing: Aluminum
Insulators: Glass reinforced high
0.98"
25 mm
®
temperature Valox
Terminals: Tinned brass
*For adjacent taps,
C = 0.665" (16.9mm)
Footprint 0.96"
24.4 mm
Electrical
Power Range: 27 – 275 watts
Resistance Range:
0.3 ohm – 4 megohm
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
Operating
Voltage Withstanding
Dielectric
Ultra*
Std**
Ohm
Range
A
(mm)
B
Series Wattage Wattage
(mm) VAC
46 1200
63 1200
80 1200
96 1200
114 1200
Voltage VAC
2500
TL54
TL71
35
96
27
71
0.3 - 1 Meg
1.0 - 2 Meg
54
71
88
F ꢀ A T U R ꢀ S
• 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.
2500
2500
2500
2500
TL88 155
TL104 215
†TL122 275
114 1.5 - 3 Meg
158 2.0 - 4 Meg 104
202 2.0 - 4 Meg 122
* For properly heat sinked, untrimmed resistors - see chart
** For properly heat sinked, trimmed resistors - see chart
† Power Ratings are theoretical. Consult Factory for details.
Temperature Limits: -40°C to
+125°C
t h e r m a L r e s i s ta n c e ( ° c / W )
TL54
1.26
1.67
TL71
0.53
0.70
TL88
0.34
0.45
TL104
0.25
0.33
Insulation: >1002 Mohm/500V
Air Distance, Terminal to
Ground: 7mm
Ultra Power(10% Tolerance)
Std Power (5% - 3% Tolerance)
Consult factory for multiple tap options in common, isolated, and special configurations.
Inductance: 50-100 nH
s ta n d a r d P a r t n u m b e r s f o r t L s e r i e s
e L e c t r i c a L / m e c h a n i c a L s P e c s
Type
Part No.
Prefix
Suffix
Part No.
Prefix
Suffix
Values for Standard Resistors
Tꢁ54
35
Tꢁ71
96
Tꢁ88
155
78
Tꢁ104 Tꢁ122
Max. Rated Wattage
Nominal Power
W
W
215
108
432
2500
2
275
137
548
2500
2
18
48
0.5
1.0
1.5
2.0
3.0
4.0
5.0
10.0
15.0
22.0
47.0
––– R50
––– 1R0
––– 1R5
––– 2R0
––– 3R0
––– 4R0
––– 5R1
240.0
470.0
510.0
––– 240
––– 470
––– 510
––– 750
––– 1K0
––– 1K1
––– 2K2
––– 4K7
––– 5K1
––– 10K
––– 22K
––– 51K
Surge Load in 10 sec
Max Voltage Between Terminal
Resistance Min
W
72
192
2000
1
312
2500
1.5
V
1000
0.3
750.0
ohm
ohm
1,000.0
1,100.0
2,200.0
4,700.0
5,100.0
10,000.0
22,000.0
51,000.0
Resistance Max
1 meg 2 meg 3 meg 4 meg 4 meg
Mechanics:
A
B
C
mm
mm
mm
54
46
16.9
71
63
33.8
88
80
50.7
104
96
67.6
122
114
84.5
––– 10R
––– 15R
Weight
g
26
33
44
55
65
––– 22R
––– 47R
––– 75R
––– 100
––– 150
––– 220
75.0
o r d e r i n G i n f o r m at i o n
100.0
150.0
220.0
= Standard values
E = RoHS compliant
= Non-standard values subject to
minimum handling charge per
item
T L 1 0 4 K U R 5 0 0 C E
Size
Tolerance Power
Ohms
Center tap
(optional)
TL54
TL71
TL88
=
=
=
54 mm F = 1%
R500 = 0.50
10R0 = 10.0
1K00 = 1,000
U = ultra
(optional)
71 mm J = 5%
88 mm K= 10%
TL104 = 104 mm
TL122 = 122 mm
1M00 = 1,000,000
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.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
Ohmite Mfg. Co.
73
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