High Power Resistors
Type SQ Series
Key Features
Choice of Styles
Bracketed Types
Available
Temp. Op. -55C to
+250C
Wide Value Range
Stable TCR 300ppm/C
Custom Designs
Welcome
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 Performance
Resistance Temp. Coefficient: -55C ~ 155C 300ppm/C
*Short Time Overload: 10 times rated power for 5 seconds 2%
Rated Load: Rated power for 30 minutes 1%
Voltage Withstand: 1000V AC 1 minute no change
Insulation Resistance: 500V megger 1000 Meg
Temperature Cycle: -30C ~ 85C for 5 cycles 1%
Load Life: 70C on-off cycle for 1000 hours 5%
Moisture-proof Load Life: 40C 95% RH on-off cycle 1000 hours 5%
Incombustability: 16 times rated wattage for 5 minutes No flame
Max. Overload Voltage: 2 times max. working voltage
*Metal Film Elements: Short time overload 5 times rated power, 5 seconds
Type SQP - Horizontal
35 3
2W: 23 3
d
H
L
W 2.7
Dimensions Resistance Range
Power Max. Working
Rating Voltage
W 1 H 1 L 1.5 d 0.05 l 0.3 Wire Metal Film
2W 7 7 18 0.65 23 R10 - 82R 83R - 10K 150V
3W 8 8 22 0.8 35 R10 - 180R 181R - 33K 350V
5W 10 9 22 0.8 35 R10 - 180R 181R - 100K 350V
7W 10 9 35 0.8 35 R10 - 430R 431R - 100K 500V
10W 10 9 48 0.8 35 R10 - 470R 471R - 100K 750V
15W 12.5 11.5 48 0.8 35 R50 - 600R 601R - 150K 1000V
20W - 25W 14 13.5 60 0.8 35 R50 - 1K0 1.1K - 150K 1000V
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 Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.High Power Resistors
Type SQ Series
Type SQH - Horizontal with
Faston Connectors
Power Dimensions Resistance Range
Rating
W 1 H 1 L 1.5 P H1 1 D0.5 P10.2 P20.2 Wire Metal Film
10W 10 10 48 32 1 21 5 2.5 1.7 R50 - 600R 601R - 50K
15W 12.5 11.5 48 32 1 21 5 2.5 1.7 1R0 - 600R 601R - 50K
20W 14.5 13.5 60 42 1 24 6 3.0 2.5 1R0 - 1K0 1K1 - 50K
30W 19 19 75 55 2 31 7.5 1R0 - 2K0
40W 19 19 90 67 2 31 7.5 1R0 - 2K0
Type SQB - Horizontal with Faston
Connectors and Bracket
Dimensions
Power
Rating
A 0.5 B 0.5 C 0.5 G 0.5
10W 8.0 5.0 12.0 3.0
15W 8.0 5.5 12.0 3.0
20W 8.0 5.5 12.0 3.0
30W 10.5 8.0 18.0 3.5
40W 10.5 8.0 18.0 3.5
Power Derating Curve Load Against Temperature
-55 -70
100
300
15W-40W
80
250
7W, 10W
60
200
5W
40
150
20
100
0
50
-50 0 50 100 150 200 250 300
155C 275C
0
Ambient Temperature (C)
0 20 40 06 80 100
Rated Load (%)
Type SQM - Vertical
Dimensions Resistance Range
Power
Rating
W 1 H 1 S 1.5 P 2.0 Wire Metal Film
2W 11 20 7 5 R10 - 82R 83R - 10K
3W 12 25 8 5 R10 - 180R 181R - 33K
5W 13 25 9 5 R10 - 180R 181R - 100K
7W 13 39 9 5 R10 - 430R 431R - 100K
10W 13 51 9 5 R10 - 470R 471R - 100K
10WS 16 35 12 7.5 R10 - 360R 361R - 100K
N.B. Custom design versions in wire at low tolerances, better T.C.R., and higher ohmic values are available to special order. Please
enquire.
1773285 CIS BI 06/2011 Dimensions are in millimeters Dimensions are shown for For email, phone or live chat, go to: te.com/help
and inches unless otherwise reference purposes only.
specified. Values in brackets Specifications subject
are standard equivalents. to change.
Rated Load (%)
Surface Temperature (C)