Semi-Precision Power

Wirewound Resistor

(N)AS Series

Semi-Precision Power

Wirewound Resistor

AS Series

© Welwyn Components Limited

Bedlington, Northumberland NE22 7AA, UK

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

92

Issue D · 03.06

Welwyn Components

Power Derating

Temperature Rise @ 25°C

Selected Pulse-Handling Capability @ 125°C

Temperature Rise @ 125°C

200

175

150

125

100

75

0

Ambient Temperature (C)

AS-1/4, 1/2, 1, 1C

AS-3, 2

AS-2C

AS-5, 10

AS-2B

AS-7

25

75

125

175

225

275

275

250

200

150

100

50

25

Percent of 25C Power Rating

AS-1/4

AS-7, 10

AS-1/2

AS-2C

AS-3, AS-5

AS-2B

AS-1C

0

40

80

120

160

200

AS-1,2

275

250

200

150

125

Percent of 125 °C Power Rating

AS-1,2

AS-7, 10

AS-1/2

AS-1/4

AS-2C

AS-3, AS-5

AS-2B

AS-1C

0

40

80

120

160

200

14

12

10

8

6

4

2

0

Resistance (ohms)

AS-3

AS-2B

AS-2

AS-2C

AS-1

AS-1/2

AS-1/4

0.1

0.2

0.5

1

2

5

10

Test Condition

Max ∆R

Load Life 1000 hours

1.0%

Moisture Resistance

1.0%

Temperature Cycle

0.5%

Short Time Overload

0.5%

Low Temperature Operation

0.5%

Solder Heat

0.25%

Shock

0.5%

Vibration

0.5%

Environmental Testing at 25°C

Semi-Precision Power

Wirewound Resistor

AS Series

© Welwyn Components Limited

Bedlington, Northumberland NE22 7AA, UK

Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

92

Issue D · 03.06

Welwyn Components

Power Derating

Temperature Rise @ 25°C

Selected Pulse-Handling Capability @ 125°C

Temperature Rise @ 125°C

200

175

150

125

100

75

0

Ambient Temperature (C)

AS-1/4, 1/2, 1, 1C

AS-3, 2

AS-2C

AS-5, 10

AS-2B

AS-7

25

75

125

175

225

275

275

250

200

150

100

50

25

Percent of 25C Power Rating

AS-1/4

AS-7, 10

AS-1/2

AS-2C

AS-3, AS-5

AS-2B

AS-1C

0

40

80

120

160

200

AS-1,2

275

250

200

150

125

Percent of 125 °C Power Rating

AS-1,2

AS-7, 10

AS-1/2

AS-1/4

AS-2C

AS-3, AS-5

AS-2B

AS-1C

0

40

80

120

160

200

14

12

10

8

6

4

2

0

Resistance (ohms)

AS-3

AS-2B

AS-2

AS-2C

AS-1

AS-1/2

AS-1/4

0.1

0.2

0.5

1

2

5

10

Test Condition

Max ∆R

Load Life 1000 hours

1.0%

Moisture Resistance

1.0%

Temperature Cycle

0.5%

Short Time Overload

0.5%

Low Temperature Operation

0.5%

Solder Heat

0.25%

Shock

0.5%

Vibration

0.5%

Environmental Testing at 25°C

EnvironmentalTesting

PerformanceData

Make Possible

02.16

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.

© TT Electronics plc

www.ttelectronicsresistors.com