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High Power Resistors in TO Packages
Steel Carrier, Non-Inductive
ØE
ØD
A
C
B
T
3 mm
max.
L
1 mm
Type
TO-126
TO-220
TO-247
Max. Voltage
300 Volt
300 Volt
350 Volt
L
11.80
16.50
21.00
B
9.00
11.00
16.00
T
30
30
30
C
5.08
5.08
10.16
E
0.8
0.8
0.8
D
2.5
3
3.5
A
2.5
3
4
Dimensions in mm (max.)
Characteristics
C
C
Power Rating : TO-126 =
2 W
in free air @ 25 ° (do not exceed 200° surface temperature)
30 W
on heat sink (see derating curve)
C
C
TO-220 =
3.5 W
in free air @ 25 ° (do not exceed 200° surface temperature)
60 W
on heat sink (see derating curve)
C
C
TO-247 =
6 W
in free air @ 25 ° (do not exceed 200° surface temperature)
120 W
on heat sink (see derating curve)
Resistance Value :
0.05 Ohm up to 10 KOhm
Temperature Coefficient : 50 ppm/° 100 ppm/°
C,
C
Tolerance :
1%, 2%, 5%
Operating Temperature : -55 ° ... +200 °
C
C
Insulation Resistance :
> 1'000 MOhm
Between two terminals and mounting surface
Dielectric Strength :
> 750 Volt
25 ° 75% Relative humidity
C
Thermal Shock :
dR/R 0,3% max
MIL Std. 202, method 107 Cond. C IEC 68 - 2 -14
Overload :
dR/R 0,3% max
2,5 x Pnom, 5 sec ( do not exceed max. voltage )
Moisture Resistance :
dR/R 0,5% max
MIL Std. 202, method 106
IEC 68 - 2 - 3
Load Life :
dR/R 1% max
1000 hours at rated power *
IEC 115 - 1
Encapsulation :
Screen Printed Silicone
Substrate Material :
Stainless Steel
Lead Material :
Tinned Copper
Resistor Material :
Ruthenium Oxide
Derating Curve
100
RATED LOAD %
80
60
40
20
0
-50
0
50
100
150
200
The case temperature is to be used for purposes of establishing
the maximum applied power. The case temperature
measurement is made with the thermocouple contacting the
bottom insulated mounting surface of the package (center of
bottom surface), the device mounted on a heat sink, thermal
grease applied at a mounting torque of up to 90 N-m (8 in-lbs)
max.
CASE TEMPERATURE (°
C)
* Power rating depend upon case temperature
Version 5.04x
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© 2004 Nicrom Electronic
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Specifications subject to changes without notice
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