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.
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.
APPLICATIONS
• Semiconductor Balancing
• Frequency Converters
• Snubber
• In-Rush Current Limiter
• Bleeder Resistor
• Power Switching
• Voltage Dividers
Modular Heat Sinkable
Thick Film Power
A
B
0.20"
5.10 mm
C*
0.25"
6.3 mm
Profile 1.01"
25.7 mm
0.98"
25 mm
Footprint 0.96"
24.4 mm
Operating
Dielectric
B
Voltage Withstanding
(mm) VAC
Voltage VAC
TL Series
SPECIFICATIONS
Material
Resistive Element:
Thick Film on
Alumina
Housing:
Aluminum
Insulators:
Glass reinforced high
temperature Valox
®
Terminals:
Tinned brass
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
Temperature Limits:
-40°C to
+125°C
Insulation:
>100
2
Mohm/500V
Air Distance, Terminal to
Ground:
7mm
Inductance:
50-100 nH
*For adjacent taps,
C = 0.665"
(16.9mm)
Ultra*
Std**
Series Wattage Wattage
Ohm
Range
A
(mm)
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.
TL54
TL71
TL88
TL104
†TL122
35
96
155
215
275
27
71
114
158
202
0.3 - 1 Meg
1.0 - 2 Meg
1.5 - 3 Meg
2.0 - 4 Meg
2.0 - 4 Meg
54
71
88
104
122
46
63
80
96
114
1200
1200
1200
1200
1200
2500
2500
2500
2500
2500
* For properly heat sinked, untrimmed resistors - see chart
** For properly heat sinked, trimmed resistors - see chart
† Power Ratings are theoretical. Consult Factory for details.
T H E R M A L R E S I S TA N C E ( ° C / W )
Ultra Power(10% Tolerance)
Std Power (5% - 3% Tolerance)
TL54
1.26
1.67
TL71
0.53
0.70
TL88
0.34
0.45
TL104
0.25
0.33
Consult factory for multiple tap options in common, isolated, and special configurations.
ELECTRICAL/MECHANICAL SPECS
Ohmic value
Type
Values for Standard Resistors
Max. Rated Wattage
Nominal Power
Surge Load in 10 sec
Max Voltage Between Terminal
Resistance Min
Resistance Max
Mechanics:
Weight
A
B
C
W
W
W
V
ohm
ohm
mm
mm
mm
g
TL54
35
18
72
1000
0.3
1 meg
54
46
16.9
26
TL71
96
48
192
2000
1
2 meg
71
63
33.8
33
TL88
155
78
312
2500
1.5
3 meg
88
80
50.7
44
TL104
215
108
432
2500
2
4 meg
104
96
67.6
55
TL122
275
137
548
2500
2
4 meg
122
114
84.5
65
S TA N D A R D PA RT N U M B E R S F O R T L S E R I E S
Ohmic value
TL104K–––
TL122K–––
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
TL104K–––
TL54K–––
TL71K–––
TL88K–––
TL54K–––
TL71K–––
TL88K–––
TL122K–––
O R D E R I N G I N F O R M AT I O N
E = RoHS compliant
TL104KUR500E
Tolerance Power
Size
TL54 = 54 mm F = 1% Blank = standard
TL71 = 71 mm J = 5% U = ultra
TL88 = 88 mm K = 10%
TL104 = 104 mm
TL122 = 122 mm
Ohms
R500 =
10R0 =
1K00 =
1M00 =
0.50
10.0
1,000
1,000,000
0.5
1.0
1.5
2.0
3.0
4.0
5.0
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
= Standard values
= Non-standard values subject to
minimum handling charge per
item
Check product availability at
www.ohmite.com
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
63
TL Series
TL54
40
Modular Heat Sinkable Thick Film Power
M A X I M U M A N D N O M I N A L P O W E R R AT I N G S F O R U LT R A P O W E R A N D S TA N D A R D P O W E R R E S I S T O R S
TL104
Ultra Power
250
Ultra Power
30
Wattage
Standard Power
TL54
Wattage
200
Standard Power
TL104
150
Nominal Ultra Power
100
20
Nominal Ultra Power
Nominal Standard Power
10
Nominal Standard Power
50
0
0
0
20
40
100
60
80
Heat sink temp,
°C
120
140
160
0
20
40
60
80
100
Heat sink temp,
°C
120
140
160
TL71
120
100
80
Wattage
TL122
300
Ultra Power
Ultra Power
250
TL71
Wattage
Standard Power
200
150
100
Standard Power
TL122
60
40
20
0
Nominal Ultra Power
Nominal Ultra Power
Nominal Standard Power
Nominal Standard Power
50
0
20
40
60
80
100
Heat sink temp,
°C
120
140
160
0
0
20
40
60
80
100
Heat sink temp,
°C
120
140
160
TL88
180
160
140
120
Wattage
Ultra Power
TL88
Standard Power
100
80
Nominal Ultra Power
60
40
20
0
0
Nominal Standard Power
20
40
60
80
100
Heat sink temp,
°C
120
140
160
Subscribe to our
New Product Bulletin at
ohmite.com
64
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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