T SERIES
COMMERCIAL STYLES
SEMI-PRECISION POWER WIREWOUND
•
•
•
•
•
0.1 ohm to 300K ohms
0.75 to 14 watts
±0.1% to ± 10% tolerance
±0.1% to ± 10% tolerance
Non-inductive windings available
Lead-/free, ROHS Compliant Construction Available
High thermal
conductivity,
centerless ground
ceramic cores
for optimum heat
distribution and
dissipation.
Weldable and
solderable leads
Silicone coat
All welded
construction
SPECIFICATIONS:
Style
Similar To
MIL-R-26
Style
---
RW81
RW70
RW70
RW80
RW80
---
RW69
RW79
---
---
RW74
---
RW67
---
RW55
RW56
---
RW78
RW67
Wattage Rating
U
0.7
1
1
1
2
2
3
---
3
4
5
5
6
5
7
---
---
10
10
---
V
---
---
---
---
---
---
3.7
3
---
5.5
6.5
---
7.5
6.5.
9
7
14
13
---
11
Resistance Range (ohms)
Min Ω
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
0.1
0.1
0.1
0.1
0.1
0.1
Max KΩ
4
4.5
12
12
12
12
25
20
40
38
45
94
65
92
115
200
300
300
300
300
T-1/2
T-1/2-A81
T-1A
T-1A-71
T-1C
T-1-80
T-2A
T-2A-69
T-2B-79
T-3
T-5
T-5-74
T-6
T-6-67
T-7
T-7A-55
T-10A-56
T-10
T-10-78
T-10-67
* To Designate Non-Inductive Winding, Add Prefix "N" to style
T SERIES GENERAL SPECIFICATIONS:
Temperature Range
Standard Temperature
Coefficient
Characteristic U = -55°C to +275°C
Characteristic V = -55°C to +350°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 & 350°C for "U" and "V"
Lead Material:
Tinned copperweld is standard.
Special Temperature
Coefficients
Insulation Resistance
Derating
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.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
A subsidiary of
TT electronics plc
IRC/Shallcross
Style
T-1/2
T-1/2-A81
T-1A
T-1A-70
T-1-80
T-1C
T-2A
T-2A-69
T-2B-79
T-3
T-5
T-5-74
T-6
T-6-67
T-7
T-7A-55
T-10A-56
T-10
T-10-78
T-10-68
Inches
0.330 (±0.062)
0.250 (±0.032)
0.406 (±0.032)
0.406 (±0.032)
0.406 (±0.032)
0.280 (±0.062)
0.500 (±0.062)
0.500 (±0.063)
0.560 (±0.062)
0.625 (±0.062)
0.875 (±0.062)
0.875 (±0.062)
1.000 (±0.062)
1.000 (±0.094)
1.185 (±0.062)
1.375 (±0.094)
2.000 (±0.094)
1.812 (±0.062)
1.780 (±0.062)
1.875 (±0.063)
A
mm
8.4 (±1.6)
6.4 (±0.8)
10.3 (±1.6)
10.3 (±0.8)
10.3 (±0.8)
7.1 (±1.6)
12.7 (±1.6)
12.7 (±1.6)
14.2 (±1.6)
15.8 (±1.6)
22.2 (±1.6)
22.2 (±1.6)
25.4 (±1.6)
25.4 (±2.4)
30.0 (±1.6)
35.0 (±2.4)
50.8 (±2.4)
46.0 (±1.6)
45.2 (±1.6)
47.6 (±1.6)
Inches
0.078 (±0.031)
0.085 (±0.020)
0.093 (±0.032)
0.094 (±0.032)
0.094 (±0.032)
0.093 (±0.031)
0.187 (±0.031)
0.188 (±0.063)
0.187 (±0.031)
0.250 (±0.062)
0.312 (±0.062)
0.312 (±0.062)
0.312 (±0.062)
0.313 (±0.063)
0.312 (±0.062)
0.469 (±0.094)
0.469 (±0.094)
0.375 (±0.062)
0.375 (±0.062)
0.344 (±0.094)
B
mm
2.0 (±0.8)
2.2 (±0.5)
10.3 (±1.6)
2.4 (±0.8)
2.4 (±0.8)
2.4 (±0.8)
4.8 (±0.8)
4.8 (±1.6)
4.8 (±0.8)
6.3 (±1.6)
7.9 (±1.6)
7.9 (±1.6)
8.0 (±1.6)
8.0 (±1.6)
8.0 (±1.6)
12 (±2.4)
12 (±2.4)
9.5 (±1.6)
9.5 (±1.6)
8.7 (±2.4)
inches (±0.002)
0.020
0.020
0.020
0.020
0.020
0.020
0.032
0.032
0.032
0.040
0.040
0.040
0.040
0.032
0.040
0.032
0.032
0.040
0.040
0.032
C
mm (±0.05)
0.5
0.5
0.5
0.5
0.5
0.5
0.8
0.8
0.8
1.0
1.0
1.0
1.0
0.8
1.0
0.8
0.8
1.0
1.0
0.8
Length
A
Diameter
B
Diameter
C
1 1/2" (38.1mm)
Minimum
Lead Length
HOW TO ORDER:
Sample Part No.:
Style
Characteristic
T-2B79 U
49R9 1%
LF
Resistance Value
Tolerance
±0.1%, ±0.5%, ±1%
Lead-Free Construction
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.
WIREWOUND AND FILM TECHNOLOGIES DIVISION
736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com
Issue Preliminary
1105
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