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RWR78SR255DR

Description
Fixed Resistor, Wire Wound, 10W, 0.255ohm, 1732V, 0.5% +/-Tol, -650,650ppm/Cel,
CategoryPassive components    The resistor   
File Size302KB,4 Pages
ManufacturerTT Electronics plc
Websitehttp://www.ttelectronics.com/
Download Datasheet Parametric View All

RWR78SR255DR Overview

Fixed Resistor, Wire Wound, 10W, 0.255ohm, 1732V, 0.5% +/-Tol, -650,650ppm/Cel,

RWR78SR255DR Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
Objectid755857902
Reach Compliance Codecompliant
ECCN codeEAR99
structureCylindrical
Lead diameter1 mm
Lead length38.1 mm
Number of terminals2
Maximum operating temperature275 °C
Minimum operating temperature-55 °C
Package diameter9.5 mm
Package length45.2 mm
Package shapeCYLINDRICAL PACKAGE
Package formAxial
Rated power dissipation(P)10 W
GuidelineMIL-PRF-39007
resistance0.255 Ω
Resistor typeFIXED RESISTOR
seriesT(WIREWOUND)
technologyWIRE WOUND
Temperature Coefficient650 ppm/°C
Tolerance0.5%
Operating Voltage1732 V
Resistors
Commercial Styles
Commercial Styles Semi-Precision
Semi-Precision
Power Wirewound Resistors
Power Wirewound Resistors
T / NT Wirewound Series
0.1Ω to 300KΩ
Make Possible
T / NT Wirewound Series
0.75 to
to 300KΩ
0.1Ω
14 watts
±0.1% to ±10% tolerance
High thermal
conductivity,
centerless ground
ceramic cores
for optimum heat
distribution and
dissipation
Weldable and
solderable leads
Non-inductive windings available
Electrical Data
IRC
Style
0.75 to 14 watts
±0.1% to ±10% tolerance
Meets or exceeds all applicable MIL-R-26 ratings
Non-inductive windings available
Meets or exceeds all applicable MIL-R-26 ratings
Similar To
MIL-R-26
Style
Similar to
MIL-PRF-39007
Style
1
---
RWR81
1
Similar to
---
MIL-PRF-39007
Style
1
Silicone coat
All welded
construction
Wattage Rating
U
0.75
1.0
Wattage Rating
V
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Working
Resistance Range (Ω)
Min
Ω
0.1
0.1
Max KΩ
4
4.5
12
12
Maximum
Voltage
54.8
67.1
Maximun
109.5
Working
Voltage
T-1/2
---
Electrical Data
T-1/2-A81
IRC
T-1A-70
Style
---
---
---
---
3.75
3.0
---
5.5
6.5
---
7.5
6.5
9.0
7.0
14.0
13.0
---
11.0
RW81
Similar to
RW70
MIL-R-26
Style
1.0
Resistance Range (Ω)
0.1
T-1-80
T-2A*
T-1/2
T-1/2-A81
RW80
RW81
RWR80
1
RWR81
1
2.0
3.0
U
Min
0.1
0.1
0.1
.05
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
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
0.1
Max KΩ
4
154.9
306.2
67.1
54.8
---
-
---
-
0.75
1.0
4.5
25
T-2A-69
T-1A-70
T-1C
T-2B-79
T-1-80
T-2A*
RW69
RW70
-
RW79
RW80
---
-
-
RWR89
1
RWR80
1
---
1.0
3.0
1
4.0
2.0
3.0
12
20
2K
40
12
25
244.9
109.5
109.5
346.4
154.9
T-3
---
-
---
-
38
457.2
306.2
T-5*
T-2A-69
T-2B-79
T-5-74
T-3
T-5*
---
RW69
RW79
RW74
-
---
-
RWR89
RWR74 / 84
1
1
5.0
3.0
3.0
5.0
4.0
20
45
40
94
38
45
540.8
244.9
346.4
685.5
457.2
T-6
---
-
---
-
-
6.0
5.0
65
698.2
540.8
T-6-67
T-5-74
T-7*
T-6
T-7A-55
T-7*
T-6-67
RW67
RW74
-
---
RW67
-
---
RWR74 / 84
1
-
---
-
---
5.0
6.0
7.0
6.5
94
92
65
115
92
115
773.3
685.5
698.2
1017.3
773.3
RW55
RW56
RW55
RW56
---
-
---
-
---
7.0
200
1183.2
1017.3
T-10A-56
T-7A-55
T-10A-56
T-10*
T-10*
---
-
-
---
-
---
7.0
14.0
10.0
10.0
10.0
300
200
300
300
300
300
2049.4
1183.2
2049.4
1974.8
1974.8
T-10-78
T-10-78
RW78
RW78
RWR78
1
1
RWR78
10.0
300
1732
1732
T-10-68
T-10-68
RW68
RW68
---
-
---
11.0
300
300
1816.6
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
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.ttelectronicsresistors.com
© TT Electronics plc
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