Semi-Precision Power

Wirewound Resistor

AS Series

General Note

Welwyn Components reserves the right to make changes in product specification without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

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

91

Issue D · 03.06

A subsidiary of

TT electronics plc

Welwyn Components

Dimensions (mm)

Type

A ±0.81

B (max)

C (max)

D (Lead Diameter)

6.4

2.4

7.9

0.5

7.9

2.4

9.5

0.5

AS-1

9.3

3.2

10.9

0.5

0.64

AS-1C

6.5

2.9

7.7

0.64

0.8

AS-2

12.2

6.3

15.2

0.8

AS-2B

13.7

5.6

16.6

0.8

AS-2C

11.0

4.0

15.1

0.8

AS-3

17.5

7.2

20.6

1.0

AS-5

22.2

8.8

24.9

1.0

AS-7

31.8

8.8

35.0

1.0

AS-10

46.0

9.8

49.2

1.0

* Leads are solder plated. AS-1C leads are copper. All others are 40% conductivity copper sheathed steel.

Electrical Data

Equivalent

Power Rating

Commercial Range

Non-Inductive Range

Available Resistance

MIL-R-26

(watts)

(ohms)

(ohms)

(ohms)

Type

Style

125°C

25°C

Min.

Max.

Min.

Max.

0.5%, 1%

3%, 5%

RW81

0.5

1

0.1

1.0K

*

*

1-1K

0.1-1K

0.5

1

0.1

6.0K

*

*

1-6K

0.1-6K

AS-1

RW70U

1

2

0.1

7.5K

0.1

3.8K

1-7.5K

0.1-7.5K

AS-1C

1

2

.05

2K

*

*

1-2K

.05-2K

AS-2

RW-69V/

2

3

0.1

20K

0.5

10K

1-20K

0.1-20K

RW79U

AS-2B

3

4

0.1

24K

0.5

12K

1-24K

0.1-24K

AS-2C

2

3

0.1

18K

0.2

7.5K

1-18K

0.1-18K

AS-3

3

5

0.1

30K

0.5

15K

1-30K

0.1-30K

AS-5

RW74U/

5

7

0.1

60K

0.8

30K

1-60K

0.1-60K

RW67U

AS-7

7

9

0.1

90K

1.0

45K

1-90K

0.1-90K

AS-10

RW68V/

10

14

0.1

175K

3.0

50K

1-175K

0.1-175K

RW78U

Inductance of AS-1/2 is less than 1µH at 1MHz.

* Typical inductance of AS-1C <5ohms is <1µH.

To order non-inductive types, add the prefix ‘N’. Example: NAS-1, NAS-2C, etc.

Lower values available upon request.

Physical Data

A

D

C

1.50 min.

(38.1)

B

Please note lead length dimension change on the following

two items only:

AS-2B 33.0mm (min)

AS-2C 33.0mm (min)

Note:

• Coating and marking is resistant to normal freon

degreasing.

Consult factory for special requirements.

• AS marking available in Alpha Numeric or Colourbanding -

identification available.