Resistors
Resistors
Commercial Styles
Commercial Styles Semi-Precision
Semi-Precision
Commercial Styles Semi-Precision
Power Wirewound Resistors
Power Wirewound Resistors
Power Wirewound Resistors
T / NT Wirewound Series
•
0.1Ω
Wirewound Series
T / NT
to 300KΩ
•
0.75 to
to 300KΩ
0.1Ω
14 watts
0.1Ω to 300KΩ
•
±0.1% to ±10% tolerance
0.75 to 14 watts
0.75 to 14
windings available
•
Non-inductive
watts
Tolerance down to 0.1%
•
Meets or
to ±10%
all applicable MIL-R-26 ratings
±0.1%
exceeds
tolerance
Non-inductive windings available
Non-inductive windings available
Meets or exceeds all applicable MIL-R-26 ratings
Meets or exceeds all applicable MIL-R-26 ratings
IRC
Style
Similar To
MIL-R-26
Style
T / NT Wirewound Series
High thermal
conductivity,
centerless ground
ceramic cores
for optimum heat
distribution and
dissipation
Weldable and
solderable leads
Silicone coat
All welded
construction
Electrical Data
Similar to
Maximum
Wattage Rating
Resistance Range (Ω)
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
MIL-PRF-39007
Working
All Pb-free parts comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3)
1
U
V
Min
Ω
Max KΩ
Style
Voltage
---
RWR81
1
0.75
1.0
---
---
0.1
0.1
4
4.5
54.8
67.1
T-1/2
---
Electrical Data
Electrical Data
T-1/2-A81
IRC
T-1A-70
RW81
Wattage Rating
Resistance Range (Ω)
Similar to
Similar to
Maximun
---
1.0
---
0.1
109.5
RW70
Wattage Rating
Resistance Range (Ω)
12
Similar to
Similar to
Maximum
MIL-R-26
MIL-PRF-39007
Working
Style
Type
MIL-R-26
MIL-PRF-39007
Working
Style
Style
1
Voltage
U
Min
Ω
Max KΩ
T-1-80
2.0
U
---
Min
Ω
0.1
12
154.9
RW80
RWR80
1
Style
Style
1
Voltage
Max KΩ
T-1/2
-
-
0.75
0.1
4
54.8
T-1/2
-
-
0.75
4
25
54.8
T-2A*
---
1
3.0
3.75
0.1
0.1
306.2
---
1.0
0.1
4.5
67.1
T-1/2-A81
RW81
RWR81
1
1.0
0.1
4.5
67.1
T-1/2-A81
RW81
RWR81
T-2A-69
RW69
---
---
1.0
3.0
0.1
244.9
T-1A-70
RW70
-
0.1
12
20
109.5
T-1A-70
RW70
-
1.0
0.1
12
109.5
T-1C
-
-
.05
2K
40
109.5
T-2B-79
3.0
1
---
0.1
346.4
RW79
RWR89
1
T-1C
-
-
1
.05
2K
109.5
T-1-80
RW80
RWR80
1
2.0
0.1
12
154.9
2.0
0.1
12
38
154.9
RW80
RWR80
1
T-3
T-1-80
---
---
4.0
5.5
0.1
457.2
T-2A*
-
-
3.0
0.1
25
306.2
T-2A
-
-
3.0
0.1
25
306.2
T-5*
---
---
5.0
6.5
0.1
540.8
T-2A-69
RW69
-
3.0
0.1
20
45
244.9
T-2A-69
RW69
-
3.0
0.1
20
244.9
T-2B-79
RW79
RWR89
1
3.0
0.1
40
94
346.4
T-5-74
5.0
---
0.1
685.5
RW74
RWR74 / 84
1
T-2B-79
RW79
RWR89
1
3.0
0.1
40
346.4
T-3
-
-
4.0
0.1
38
457.2
-
-
4.0
0.1
38
65
457.2
T-6
T-3
---
---
6.0
7.5
0.1
698.2
T-5*
-
-
5.0
0.1
45
540.8
T-5
-
-
5.0
0.1
45
540.8
T-6-67
RW67
---
---
5.0
6.5
0.1
773.3
T-5-74
RW74
RWR74 / 84
1
0.1
94
92
685.5
T-5-74
RW74
RWR74 / 84
1
5.0
0.1
94
685.5
-
-
6.0
0.1
65
698.2
T-7*
T-6
---
---
7.0
9.0
0.1
115
1017.3
T-6
-
-
6.0
0.1
65
698.2
T-6-67
RW67
-
6.5
0.1
92
773.3
T-7A-55
RW55
---
---
6.5
7.0
0.1
200
1183.2
T-6-67
RW67
-
0.1
92
773.3
T-7*
-
-
7.0
0.1
115
1017.3
T-7
-
-
7.0
0.1
115
1017.3
T-10A-56
RW56
---
---
7.0
14.0
0.1
0.1
300
2049.4
T-7A-55
RW55
-
200
1183.2
T-7A-55
RW55
-
7.0
0.1
200
1183.2
T-10A-56
RW56
-
14.0
300
2049.4
T-10*
---
---
10.0
13.0
0.1
0.1
300
1974.8
T-10A-56
RW56
-
14.0
0.1
300
2049.4
T-10*
-
-
10.0
0.1
300
1974.8
T-10-78
RW78
RWR78
1
10.0
---
0.1
300
1732
T-10
-
-
10.0
0.1
300
1974.8
T-10-78
RW78
RWR78
1
10.0
0.1
300
1732
T-10-78
RW78
RWR78
1
10.0
0.1
300
1732
T-10-68
RW68
---
---
11.0
0.1
0.1
300
1816.6
T-10-68
RW68
-
11.0
300
1816.6
T-10-68
RW68
-
11.0
0.1
300
1816.6
* 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
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.
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
T / NT Wirewound Series Issue January 2010 Sheet 1 of 4
General Note
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
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.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
www.ttelectronics.com/resistors
© TT Electronics plc
© TT Electronics plc
09.17
01.19
Commercial Styles Semi-Precision
Commercial Styles Semi-Precision
Power Wirewound Resistors
Wirewound Resistors
Commercial Styles
Semi-Precision
T / NT Wirewound Series
T / NT Wirewound Series
Power Wirewound Resistors
Temperature Range
Standard Temperature Coefficient
Characteristic U = -55°C to +275°C
±20 ppm/°C 10Ω up
±50 ppm/°C 1.0Ω to 9.9Ω
±400 ppm/°C 0.50Ω to 0.999Ω
±650 ppm/°C 0.1Ω to 0.490Ω
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 for "U" style rating
General Specifications
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
- 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
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.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
BI Technologies IRC Welwyn
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
www.ttelectronics.com/resistors
© TT Electronics plc
© TT Electronics plc
01.19
09.17
Commercial Styles
Commercial Styles
Semi-Precision
T / NT Wirewound Series
Semi-Precision
Power Wirewound Resistors
Power
Data
Wirewound Resistors
Physical
Commercial Styles Semi-Precision
Power Wirewound Resistors
Physical Data
A
Length
A
Length
B
Diameter
B
Diameter
C
Diameter
C
Diameter
1 ½” (38.1mm)
Minimum
Lead Length
1 ½” (38.1mm)
Minimum
Lead Length
Dimensions (Inches and (mm))
A
Type
A
Inches
IRC / Shallcross
Style
Inches
T-1/2
0.330 (±0.062)
T-1/2
T-1/2-A81
T-1/2-A81
T-1A-70
T-1A-70
T-1C
T-1-80
T-1-80
T-2A
T-2A
T-2A-69
T-2A-69
T-2B-79
T-2B-79
T-3
T-3
T-5
T-5
T-5-74
T-5-74
T-6
T-6
T-6-67
T-6-67
T-7
T-7
T-7A-55
T-7A-55
T-10A-56
T-10A-56
T-10
T-10
T-10-78
T-10-78
T-10-68
T-10-68
0.330 (±0.062)
0.250 (±0.032)
0.250
0.406 (±0.032)
0.406
0.303
(±0.032)
0.406 (±0.032)
0.500 (±0.062)
(±0.062)
0.500 (±0.063)
0.500 (±0.063)
0.560 (±0.062)
0.560
0.625 (±0.062)
0.625
0.875 (±0.062)
0.875 (±0.062)
0.875
1.000 (±0.062)
(±0.062)
1.000 (±0.094)
1.000 (±0.094)
1.185 (±0.062)
1.185 (±0.062)
1.375 (±0.094)
1.375
2.000 (±0.094)
2.000 (±0.094)
1.812 (±0.062)
1.812
1.780 (±0.062)
1.780 (±0.062)
1.875 (±0.063)
1.875 (±0.063)
B
Dimensions (Inches and (mm))
mm
mm
8.4 (±1.6)
8.4 (±1.6)
6.4 (±0.8)
6.4 (±0.8)
10.3(±0.8)
10.3
(±0.8)
7.7
(±0.8)
10.3 (±0.8)
12.7 (±1.6)
12.7 (±1.6)
12.7
14.2 (±1.6)
14.2
15.8 (±1.6)
15.8
22.2 (±1.6)
22.2 (±1.6)
22.2
25.4 (±1.6)
(±1.6)
25.4 (±2.4)
25.4 (±2.4)
30.0 (±1.6)
30.0 (±1.6)
35.0 (±2.4)
35.0
50.8 (±2.4)
50.8 (±2.4)
46.0 (±1.6)
46.0
45.2 (±1.6)
45.2
47.6 (±1.6)
47.6 (±1.6)
Inches
Inches
0.078 (±0.031)
0.078 (±0.031)
0.085 (±0.020)
0.085 (±0.020)
0.094 (±0.032)
0.094 (±0.032)
0.115 (±0.32)
0.094 (±0.032)
0.187 (±0.031)
0.187 (±0.031)
0.188 (±0.063)
0.188 (±0.063)
0.187 (±0.031)
0.187 (±0.031)
0.250 (±0.062)
0.250
0.312 (±0.062)
0.312 (±0.062)
0.312 (±0.062)
0.312 (±0.062)
0.313 (±0.063)
0.313 (±0.063)
0.312 (±0.062)
0.312 (±0.062)
0.469 (±0.094)
0.469 (±0.094)
0.469 (±0.094)
0.375 (±0.062)
0.375 (±0.062)
0.375 (±0.062)
0.344 (±0.094)
0.344 (±0.094)
B
mm
mm
2.0 (±0.8)
2.0 (±0.8)
2.2 (±0.5)
2.2 (±0.5)
2.4 (±0.8)
2.4 (±0.8)
2.9
2.4
4.8 (±0.8)
(±0.8)
4.8 (±1.6)
(±1.6)
4.8 (±0.8)
4.8 (±0.8)
6.3 (±1.6)
6.3
7.9 (±1.6)
7.9 (±1.6)
7.9
8.0 (±1.6)
8.0 (±1.6)
8.0 (±1.6)
8.0 (±2.4)
12 (±1.6)
12 (±2.4)
12 (±1.6)
9.5 (±2.4)
9.5 (±1.6)
9.5 (±1.6)
8.7 (±2.4)
8.7 (±2.4)
C
Inches C
mm (±0.05)
(±0.002)
Inches
mm (±0.05)
0.020
0.5
(±0.002)
0.020
0.020
0.5
0.5
0.020
0.020
0.032
0.032
0.032
0.032
0.040
0.040
0.040
0.040
0.040
0.032
0.032
0.040
0.040
0.032
0.032
0.032
0.040
0.040
0.040
0.032
0.032
0.5
0.5
0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.0
0.8
0.8
1.0
1.0
0.8
0.8
0.8
1.0
1.0
1.0
0.8
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
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
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.
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
© TT Electronics plc
01.19
09.17
Note remove asterisks from Electrical Data &
Commercial Styles Semi-Precision
also the note
* Available as radial lead = type TR.
Power
Maximun
to
Maximum
(last column)
Change
Wirewound Resistors
T / NT Wirewound Series
Ordering Procedure
Example: T1801000FLF
(T-1-80, 100 ohms ±1%, Pb-free)
T
1
1
Winding
Omit for
standard
N = non-
inductive
T1/2
T1/2A81
T1A70
T1C
T180
T2A
T2A69
T2B79
T3
T5
1
8
0
2
2
Type
T574
T6
T667
T7
T7A55
T10A56
T10
T1078
T1068
1
0
3
3
Value
0
0
F
4
4
Tolerance
L
5
5
Termination
F
3 digits + multiplier B = ±0.1% Omit for SnPb
C = ±0.25% LF = Pb-free
R = ohms for
values <100ohms D = ±0.5%
F = ±1%
J = ±5%
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.
BI Technologies IRC Welwyn
www.ttelectronics.com/resistors
© TT Electronics plc
01.19
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Authorized Distributor
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T1C 4.7 1% T1C 6.8 1% T2A 100 1% T-2B79U47RF-LF T1B 330 .1% T3 3.3 1% T3 1.5 1% T3 100 .1%LFTR T-
2B-79-450 5% T2A 82 .5% T3 2.2 1% T1C 10 1% T18024R9FLF
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