eneral Purpose Stand-Up
General Purpose Stand-Up
wer
Power Wirewound Resistor
Wirewound Resistor
PWR Series
Series
7, and 10 watts
Radial leads for PC mount
·
to 18KΩ range
from 300 ppm/°C to +5500 ppm/°C
·
TC’s
•
0.1Ω to 18KΩ range
•
Radial leads for PC mount
•
TC’s from 300 ppm/°C to +5500 ppm/°C
General Purpose Stand-Up
·
3, 5, 7, and 10 watts
Power Wirewound Resistor
·
0.1Ω to 18KΩ range
Fireproof high
temperature ceramic
case with stand-off
NOT RECOMMENDED FOR
•
3, 5, 7,
rom 300 ppm/°C
and
+5500 ppm/°C
NEW DESIGNS
to
10 watts
PWR Series
l leads for PC mount
Fireproof high
temperature ceramic
case with stand-off
Inorganic
fireproof
encapsulant
Alloy resistance wire on
Inorganic
fiberglass
fireproof
substrate
encapsulant
Alloy resistance wire on
fiberglass substrate
cifications
Specifications
er Rating: 3, 5, 7, and 10 watts
- Power
stance Range:
Rating: 3, 5, 7, and 10 watts
Resistance Range:
3 watt:
-
0.1Ω
3 watt: 0.1Ω to
7 watt:
7
0.1Ω
0.1Ω to 18K
to 7.5K
to 18K
7.5K
watt:
5 watt: 0.1Ω
5 watt: 0.1Ω to 8.5K 10
0.18Ω to 18K
to 8.5K 10 watt:
watt: 0.18Ω to 18K
- Tolerance: ±5% and ±10%
- Tolerance: ±5% and ±10%
(refer to PWRG for tolerances less than 5% pg.12
-
(refer to PWRG for tolerances
construction
Flameproof inorganic
less than 5% pg.129)
- Flameproof inorganic construction
-
-
EIA
RS-344, insulated fixed wirewound resistors
resistors
EIA
RS-344, insulated fixed wirewound
Physical
sical Data
Data
A
B
A
B
C
Meniscus
permitted to
bottom of feet
0.080
±0.032
C
LD
0.170
±0.062
0.080
±0.032
IRC Type
PWR-3
PWR-5
PWR-7
PWR-10
A
General Note
Meniscus
permitted to
D
bottom of feet
Dimensions (Inches and (mm))
B
0.320 ±0.030
(8.1 ±0.8)
0.350 ±0.030
C
1.00 ±0.030
(25.4 ±0.8)
1.00 ±0.030
(25.4 ±0.8)
1.50 ±0.032
D
E
A
0.475 ±0.030
(12.0 ±0.8)
0.170
0.500
±0.062
±0.030
(12.7 ±0.8)
0.500 ±0.030
(12.7 ±0.8)
0.630 ±0.032
(16.0 ±0.81)
LD
E
0.175 ±0.062
(4.44 ±1.6)
LD
0.036 ±0.002
(0.91 ±0.05)
0.036 ±0.002
(0.91 ±0.05)
0.036 ±0.002
(0.91 ±0.05)
0.200 ±0.062
(5.08 ±1.6)
0.200 ±0.062
(5.08 ±1.6)
0.200 ±0.062
D
(8.8 ±0.8)
E
0.175 ±0.062
(4.44 ±1.6)
0.175 ±0.062
(4.44 ±1.6)
0.250 ±0.062
(6.4 ±1.6)
0.350 ±0.030
Dimensions
(38.1 ±0.81)
(Inches and (mm))
(8.8 ±0.8)
(5.08 ±1.6)
1.39 ±0.032
(35.3 ±0.81)
C Type
B
0.510 ±0.032
(13.2 ±0.81)
C
0.290 ±0.062
(7.4 ±1.6)
D
E
0.036 ±0.002
(0.91 ±0.05)
LD
WR-3
(12.0
General Note
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
0.475 ±0.030
±0.8)
0.320 ±0.030
(8.1 ±0.8)
1.00 ±0.030
(25.4 ±0.8)
1.00 ±0.030
(25.4 ±0.8)
1.50 ±0.032
0.200 ±0.062
(5.08 ±1.6)
(5.08 ±1.6)
0.200 ±0.062
0.175 ±0.062
(4.44 ±1.6)
(4.44 ±1.6)
0.175 ±0.062
0.036 ±0.00
WR-5
Wire and Film Technologies Division
• 4222 South Staples
specification without
78411 USA
TT electronics reserves the right to make changes in product
Street • Corpus Christi Texas
notice or liability.
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
(0.91 ±0.05
0.500 ±0.030
0.350 ±0.030
(8.8 ±0.8)
PWR Series
of 2
0.200 ±0.062
0.175
Issue November 2008 Sheet 1
0.036 ±0.00
±0.062
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
(12.7 ±0.8)
© TT electronics plc
0.500 ±0.030
(0.91 ±0.05
2.14
0.350 ±0.030
0.036 ±0.00
General Purpose Stand-Up
Power Wirewound Resistor
General Purpose Stand-Up
Power Wirewound Resistor
PWR Series
Temperature Rise Chart
300
Power Derating Curve
100
Hot Spot Temperature (°C)
80
PWR - 7, 10
60
25
85
PWR - 3, 5
Hot Spot Temperature (°C)
200
PWR - 7, 10
PWR - 3, 5
100
40
20
0
0
50
100
150
Rated Power (%)
200
250
0
0
20
40
60
80
100
120
Rated Power (%)
Ordering Data
Sample Part No.
IRC Type
PWR
PWR
10
1202
K
LF
Power
Resistance Range
Tolerance
J = ±5%, K = ±10%
RoHS Indicator
LF indicates RoHS compliance
Wire and Film Technologies Division
• 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
PWR Series Issue November 2008 Sheet 2 of 2
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
© TT electronics plc
2.14
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