mercial Styles
Semi-Precision
Commercial Styles
Commercial Styles
Power Wirewound Resistors
i-Precision
Semi-Precision
Power Wirewound Resistors
er Wirewound Resistors
T / NT Wirewound Series
T / NT Wirewound Series
0K
·
±0.1% to ±10% tolerance
•
±0.1% to ±10% tolerance
watts
•
Non-inductive windings available
available
·
Non-inductive windings
•
Meets
·
Meets or exceeds all applicable MIL-R-26 ratings
10% tolerance
or exceeds all applicable MIL-R-26 ratings
ve windings available
IRC
Style
T-1/2
Similar To
MIL-R-26
Style
---
Similar to
MIL-PRF-39007
Style
1
---
RWR81
1
Wattage Rating
U
0.75
1.0
V
---
---
300K
wound
•
·
0.1 to
to 14 watts
Series
0.75
•
0.75 to 14 watts
·
0.1Ω to 300KΩ
High thermal
conductivity,
High thermal
centerless ground
ceramic cores
conductivity,
for optimum heat
centerless ground
distribution and
ceramic cores
dissipation
Weldable and
Weldable
solderable leads
and
solderable leads
for optimum heat
distribution and
dissipation
All welded
construction
Silicone coat
Silicone coat
All welded
construction
Resistance Range ( )
Electrical Data
xceeds all applicable MIL-R-26 ratings
al Data
Electrical Data
Similar To
IRC
T-1A-70
MIL-R-26
Style
Style
T-1-80
T-2A*
---
T-1/2
T-1/2-A81
Min
0.1
0.1
Max K
4
4.5
12
Maximum
Working
Voltage
54.8
67.1
T-1/2-A81
Similar to
Similar to
Similar to
RW70
MIL-PRF-39007
MIL-PRF-39007
---
MIL-R-26
Style
Style
1
Style
RW80
RWR80
1
1
RW81
Wattage Rating
Wattage Rating
1.0
---
V
-
-
Resistance Range (Ω)
Resistance Range ( )
Max KΩ
Max
0.1
U
U
2.0
3.0
---
3.0
4.0
5.0
5.0
6.0
---
7.0
---
---
10.0
10.0
---
V
---
3.75
---
Min
Ω
Min
0.1
12
Maximun
109.5
Working
Voltage
K
154.9
306.2
Maximu
Working
Voltage
54.8
67.1
109.5
154.9
306.2
244.9
346.4
457.2
540.8
685.5
698.2
773.3
-
RW81
---
---
-
RWR81
1
---
1
---
0.75
1.0
1
0.75
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
25
4
4.5
4
54.8
67.1
T-2A-69
T-1A-70
T-1C
T-2B-79
T-1-80
T-2A*
RW81
RW69
RW70
T-3
RW70
T-5*
T-2A-69
T-2B-79
T-5-74
T-3
RWR81
-
-
RW79
RWR89
RW80
RWR80
1
-
-
1.0
1
1.0
3.0
2.0
1
1.0
---
---
-
-
---
2.0
5.5
---
3.75
3.0
6.5
-
---
5.5
6.5
2
---
---
-
-
3.0
0.1
0.1
.05
0.1
0.1
0.1
20
12
2K
40
12
25
4.5
244.9
109.5
154.9
109.5
346.4
0.1
38
12
457.2
306.2
12
540.8
244.9
346.4
685.5
457.2
540.8
RW80
T-5*
---
RW69
-
-
RW79
RW74
RWR80
1
---
---
-
T-6
---
---
RWR89
1
RWR74 / 84
-
-
3.0
---
0.1
0.1
0.1
0.1
0.1
0.1
45
20
40
94
38
45
---
3.0
5.0
5.0
---
6.0
-
3.0
7.0
-
4.0
-
10.0
5.0
10.0
4.0
3.75
7.5
3.0
7.0
0.1
65
25
698.2
20
T-6-67
T-5-74
T-7*
T-6
RW69
T-6-67
RW79
T-7*
RW67
RW74
T-7A-55
-
---
-
RW67
RWR89
1
-
-
---
RWR74 / 84
-
1
---
-
6.5
7.5
9.0
6.5
---
9.0
0.1
0.1
0.1
0.1
0.1
0.1
92
94
65
115
92
773.3
685.5
---
---
---
---
RWR78
1
1
---
698.2
1017.3
1017.3
RW55
0.1
200
115
773.3
40
1183.2
T-10A-56
T-7A-55
---
T-10A-56
T-10*
T-10*
---
RW56
RW55
RW56
---
-
RW78
---
---
-
-
-
14.0
7.0
5.5
14.0
13.0
13.0
6.5
-
0.1
0.1
0.1
0.1
0.1
0.1
300
200
300
300
300
1183.2
38
2049.4
T-10-78
T-10-78
RW78
RWR78
---
0.1
300
45
2049.4
1974.8
300
1732
1974.8
1732
T-10-68
RW74
T-10-68
RW68
RWR74
RW68
/ 84
1
-
5.0
-
6.0
---
11.0
---
11.0
0.1
0.1
300
300
94
1816.6
1816.6
65
* Available as radial lead = type TR.
Designate non-inductive winding by adding the prefix "N" to style.
1
The RWR is obsolete. The listed parts correspond to the commercial equivalent parts that are manufactured with the same procedures but lack
the burn-in screening that is required by MIL-PRF-39007
---
---
7.5
RW67
---
---
6.5
9.0
0.1
0.1
92
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.
---
7.0
---
---
115
200
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
A subsidiary of
TT electronics plc
1017.3
RW55
---
7.0
14.0
13.0
0.1
T / NT Wirewound Series Issue January 2010 Sheet 1 of 4
1183.2
General Note
RW56
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.
---
0.1
0.1
300
300
2049.4
---
© TT electronics plc
---
1
10.0
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
1974.8
11.12
Commercial Styles Semi-Precision
Power Wirewound Resistors
Commercial Styles
Semi-Precision
T / NT Wirewound Series
Power Wirewound Resistors
Temperature Range
Characteristic U = -55°C to +275°C
Characteristic V = -55°C to +350°C
±20 ppm/°C 10 up
±50 ppm/°C 1.0 to 9.9
±400 ppm/°C 0.50 to 0.999
±650 ppm/°C 0.1 to 0.490
Available from -30 ppm/°C to +6000 ppm/°C
Temperature range for special TC’s -50°C to +150°C
1000 megohms minimum dry at 100 volts DC
Wattage rating based on operation at 25°C
Derate to zero at 275°C & 350°C for "U" and "V" style rating
General Specifications
Standard Temperature Coefficient
Special Temperature Coefficient
Insulation Resistance
Derating
Lead Material:
Tinned copperweld is standard.
Also available: Weldable Grade A nickel (bare)
Special Features:
- Radial lead available
- Resistance network packages designed to individual customer requirements
- Temperature coefficient matching and tracking to ±5 ppm
- High thermal conductivity core (Beryllium Oxide) available. See B Series.
- Ratio tolerance matched sets available
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
T / NT Wirewound Series Issue January 2010 Sheet 2 of 4
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
11.12
Commercial Styles Semi-Precision
Power Wirewound Resistors
Physical Data
Physical Data
Commercial Styles
Semi-Precision
T / NT Wirewound Series
Styles
Commercial
Power Wirewound Resistors
Semi-Precision
Power Wirewound Resistors
A
Length
A
Length
C
Diameter
1 ½” (38.1mm)
Minimum
Lead Length
B
Diameter
B
Diameter
C
Diameter
Dimensions (Inches and (mm))
Minimum
IRC / Shallcross
Style
A
Inches
A
Lead Length
1 ½” (38.1mm)
B
mm
2.0 (±0.8)
2.2
mm
(±0.5)
2.4
2.0 (±0.8)
2.4 (±0.8)
2.2 (±0.5)
2.9 (±0.8)
4.8
2.4 (±0.8)
4.8 (±1.6)
2.4 (±0.8)
4.8 (±0.8)
6.3
4.8 (±1.6)
7.9 (±1.6)
4.8 (±0.8)
7.9
6.3 (±1.6)
8.0
7.9 (±1.6)
8.0
7.9 (±1.6)
8.0 (±1.6)
12 (±1.6)
8.0 (±2.4)
12 (±1.6)
8.0 (±2.4)
9.5 (±2.4)
12 (±1.6)
9.5 (±2.4)
12 (±1.6)
8.7 (±2.4)
9.5 (±1.6)
9.5 (±1.6)
8.7 (±2.4)
Inches
(±0.002)
0.020
Inches
0.020
(±0.002)
0.020
C
mm (±0.05)
C
0.5
mm
0.5
(±0.05)
0.5
mm
Inches
Dimensions (Inches and (mm))
8.4 (±1.6)
6.4
mm
(±0.8)
10.3(±1.6)
8.4 (±0.8)
10.3(±0.8)
6.4 (±0.8)
7.7 (±0.8)
12.7 (±1.6)
10.3 (±0.8)
12.7 (±1.6)
10.3 (±0.8)
14.2
12.7 (±1.6)
15.8
12.7 (±1.6)
22.2
14.2 (±1.6)
22.2
15.8 (±1.6)
25.4
22.2 (±1.6)
25.4 (±2.4)
22.2 (±1.6)
30.0
25.4 (±1.6)
35.0
25.4 (±2.4)
50.8 (±2.4)
30.0 (±1.6)
46.0 (±1.6)
35.0 (±2.4)
45.2 (±1.6)
50.8 (±2.4)
47.6
46.0 (±1.6)
45.2 (±1.6)
47.6 (±1.6)
0.078 (±0.031)
Inches
0.085 (±0.020)
0.094 (±0.032)
0.078 (±0.031)
0.094 (±0.032)
0.085 (±0.020)
0.115 (±0.32)
0.187 (±0.031)
0.094 (±0.032)
0.188 (±0.063)
0.094 (±0.032)
0.187 (±0.031)
0.250 (±0.062)
0.188 (±0.063)
0.312 (±0.062)
0.187 (±0.031)
0.312
0.250 (±0.062)
0.312 (±0.062)
0.313 (±0.063)
0.312 (±0.062)
0.312 (±0.062)
0.469 (±0.094)
0.313 (±0.063)
0.469 (±0.094)
0.312 (±0.062)
0.375 (±0.062)
0.469 (±0.094)
0.375 (±0.062)
0.469 (±0.094)
0.344 (±0.094)
0.375 (±0.062)
0.375 (±0.062)
0.344 (±0.094)
B
T-1/2
IRC / Shallcross
0.330 (±0.062)
Style
Inches
T-1/2-A81
0.250 (±0.032)
T-1A-70
T-1/2
T-1-80
T-1/2-A81
T-1C
T-2A
T-1A-70
T-2A-69
T-1-80
T-2B-79
T-2A
T-3
T-2A-69
T-5
T-2B-79
T-5-74
T-3
T-6
T-5
T-6-67
T-5-74
T-7
T-6
T-7A-55
T-6-67
T-10A-56
T-7
T-10
T-7A-55
T-10-78
T-10A-56
T-10-68
T-10
T-10-78
T-10-68
0.406 (±0.032)
0.330 (±0.062)
0.406
0.250 (±0.032)
0.303 (±0.032)
0.500 (±0.062)
0.406 (±0.032)
0.500 (±0.063)
0.406 (±0.032)
0.560
0.500 (±0.062)
0.625 (±0.062)
0.500 (±0.063)
0.875
0.560 (±0.062)
0.875
0.625 (±0.062)
1.000
0.875 (±0.062)
1.000 (±0.094)
0.875 (±0.062)
1.185
1.000 (±0.062)
1.375
1.000 (±0.094)
2.000 (±0.094)
1.185 (±0.062)
1.812 (±0.062)
1.375 (±0.094)
1.780 (±0.062)
2.000 (±0.094)
1.875 (±0.063)
1.812 (±0.062)
1.780 (±0.062)
1.875 (±0.063)
0.025
0.020
0.032
0.020
0.032
0.020
0.032
0.040
0.032
0.040
0.032
0.040
0.040
0.032
0.040
0.040
0.032
0.032
0.040
0.040
0.032
0.040
0.032
0.032
0.040
0.040
0.032
0.6
0.5
0.8
0.5
0.8
0.5
0.8
1.0
0.8
1.0
0.8
1.0
1.0
0.8
1.0
1.0
0.8
0.8
1.0
1.0
0.8
1.0
0.8
0.8
1.0
1.0
0.8
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
T / NT Wirewound Series Issue January 2010 Sheet 3 of 4
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
General Note
T / NT Wirewound Series Issue January 2010 Sheet 3 of 4
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
11.12
Commercial Styles Semi-Precision
Power Wirewound Resistors
Commercial Styles
Semi-Precision
T / NT Wirewound Series
Power Wirewound Resistors
T180
1000
F
LF
Ordering Data
Sample Part No.
Style
Non-inductive version = NT
Resistance Value
Expressed in ohms (Standard EIA/MIL values)
Tolerance
F = ±1%, D = ±0.5%, B = ±0.1%
RoHS Compliant
Wire and Film Technologies Division
T
:
F
:
W
:
T
J
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
11.12
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