NAS-XXX 查看數據表（PDF） - Unspecified

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NAS-XXX

SEMI-PRECISION POWER WIREWOUND RESISTOR

Unspecified 

SEMI-PRECISION POWER

WIREWOUND RESISTOR

ISO-9001

Registered

AS SERIES

• 1/4 watt to 10 watts

• ±5%, ±3%, ±1%, ±.5% tolerance

• 0.1 ohm to 175K ohms

• Resistance wire TCR ±20 ppm/°C

Alloy resistance wire wound

to specific parameters

including TCR's from ±20 to

+5500 ppm/°C

Alpha - Digital

Marking

All welded cap

and lead

assembly

Silicone conformal

coating

Heat conducting

ceramic substrate

SPECIFICATIONS:

Power Rating 275°C

Equivalent

MIL-R-26

Max. Hot Spot (watts)

IRC Type Style

125°C

25°C

AS-1/4

RW81

0.5

1

AS-1/2

0.5

1

AS-1

RW70U

1

2

AS-1C

1

2

AS-2

RW-69V/

2

3

RW79U

AS-2B

3

4

AS-2C

2

3

AS-3

3

5

AS-5

RW74U/

5

7

RW67V

AS-7

7

9

AS-10

RW68V/

10

14

RW78U

Commercial Range

(ohms)

Min.

0.1

0.1

0.1

.05

0.1

Max.

1.0K

6.0K

7.5K

2K

20K

0.1

24K

0.1

18K

0.1

30K

0.1

60K

0.1

90K

0.1

175K

Non-Inductive Range

(ohms)

Min.

*

*

0.1

*

0.5

Max.

*

*

3.8K

*

10K

Available Resistance

(ohms)

0.5%, 1%

1-1K

1-6K

1-7.5K

1-2K

1-20K

3%, 5%

0.1-1K

0.1-6K

0.1-7.5K

.05-2K

0.1-20K

0.5

12K

1-24K

0.1-24K

0.2

7.5K

1-18K

0.1-18K

0.5

15K

1-30K

0.1-30K

0.8

30K

1-60K

0.1-60K

1.0

45K

1-90K

0.1-90K

3.0

50K

1-175K 0.1-175K

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

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

DIMENSIONS (Inches and (mm)):

Please note lead length

dimension change on the

following two items only:

AS-2B 1.3 min

AS-2C 1.3 min

1.50 min.

(38.1)

B

A

D

C

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

Lower values available upon request.

NOTE:

• Coating and marking is resistant to normal freon degreasing.

Consult factory for special requirements.

• AS marking available in Alpha Numeric or Colorbanding -

identification available.

IRC Type

A±0.032

B (max)

C (max)

AS-1/4

0.250 (6.4)

0.094 (2.4)

0.312 (7.9)

AS-1/2

0.312 (7.9)

0.094 (2.4)

0.375 (9.5)

AS-1

0.367 (9.3)

0.125 (3.2)

0.429 (10.9)

AS-1C

0.256 (6.5)

0.115 (2.9)

0.303 (7.7)

AS-2

0.480 (12.2)

0.250 (6.3)

0.600 (15.2)

AS-2B

0.540 (13.7)

0.219 (5.6)

0.663 (16.6)

AS-2C

0.489 (11.0)

0.157 (4.0)

0.594 (15.1)

AS-3

0.687 (17.5)

0.282 (7.2)

0.812 (20.6)

AS-5

0.875 (22.2)

0.344 (8.8)

0.980 (24.9)

AS-7

1.250 (31.8)

0.344 (8.8)

1.375 (35.0)

AS-10

1.812 (46.0)

0.385 (9.8)

1.937 (49.2)

*Leads 60/40 are solder plated. AS-1C leads are copper. All others are 40% conductivity copper sheathed steel.

D (Lead Diameter)

0.020 (0.5)

0.020 (0.5)

0.020 (0.5) 0.025 (0.64)

0.025 (0.64) 0.032 (0.8)

0.032 (0.8)

0.032 (0.8)

0.032 (0.8)

0.040 (1.0)

0.040 (1.0)

0.040 (1.0)

0.040 (1.0)

WIREWOUND AND FILM TECHNOLOGIES DIVISION

1

736 Greenway Road • Boone, North Carolina 28607-1860 • Tel: 828-264-8861 • Fax: 828-264-8866 • www.irctt.com

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