High Power Resistors
Type SQ Series
Key Features
I Choice of Styles
I Bracketed Types
Available
I Temp. Op. -55°C to
+250°C
I Wide Value Range
I Stable TCR 300ppm/°C
I Custom Designs
Welcome
I Inorganic Flame Proof
Construction
This flexible range of Power Wirewound Resistors either have wire or power oxide film
elements. The SQ series resistors are wound or deposited on a fine non - alkali ceramic core
then embodied in a ceramic case and sealed with an inorganic silica filler. This design provides
a resistor with high insulation resistance, low surface temperature, excellent T.C.R., and
entirely fire proof construction. These resistors are ideally suited to a range of areas where low
cost, and efficient thermal performance are important design criteria. Metal film cores adjusted
by laser spiral are used where the resistor value is above that suited to wire. Similar
performance is obtained although short time overload is slightly derated.
Characteristics - Electrical
Test Condition
-55°C ~ 155°C
10 times rated power for 5 seconds
Rated power for 30 minutes
1000V AC 1 minute
500V megger
-30°C ~ 85°C for 5 cycles
70°C on-off cycle for 1000 hours
40°C 95% RH on-off cycle 1000 hours
16 times rated wattage for 5 minutes
2 times max. working voltage
Short time overload 5 times rated power, 5 seconds
Performance
300ppm/°C
2%
Resistance Temp. Coefficient:
*Short Time Overload:
Rated Load:
Voltage Withstand:
Insulation Resistance:
Temperature Cycle:
Load Life:
Moisture-proof Load Life:
Incombustability:
Max. Overload Voltage:
*Metal Film Elements:
1%
no change
1000 Meg
1%
5%
5%
No flame
Type SQP - Horizontal
35
3
2W: 23
3
d
H
L
ø2.7
W
Dimensions
1.5
18
Resistance Range
Power
Rating
2W
3W
5W
7W
10W
15W
Max. Working
Voltage
150V
W
1
H
1
L
d
0.05
0.65
l
0.3
23
Wire
Metal Film
83R - 10K
7
8
7
8
9
9
9
R10 - 82R
R10 - 180R
R10 - 180R
R10 - 430R
R10 - 470R
R50 - 600R
R50 - 1K0
22
22
35
48
48
60
0.8
0.8
0.8
0.8
0.8
0.8
35
35
35
35
35
35
181R - 33K
181R - 100K
431R - 100K
471R - 100K
601R - 150K
1.1K - 150K
350V
350V
500V
750V
1000V
1000V
10
10
10
12.5
14
11.5
13.5
20W - 25W
Rated Continuous Working Voltage (RCWV)
RCWV: Rated Power x Resistance Value or Maximum Working Voltage listed above whichever is lower
1773285 CIS BI 06/2011
Dimensions are in millimeters
and inches unless otherwise
specified. Values in brackets
are standard equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
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