AS Datasheet, PDF (1/3 Pages) Littelfuse – High Energy Metal-Oxide Arrester Blocks

Semi-Precision Power
Wirewound Resistor
AS Series
• 0.25 to 10 watts
• Tolerance down to ±0.5%
• 0.1 ohm to 175K ohms
• Resistance wire TCR ±20 ppm/°C
Welwyn Components
Electrical Data
Type
AS-¹/4
AS-¹/2
AS-1
AS-1C
AS-2
AS-2B
AS-2C
AS-3
AS-5
AS-7
AS-10
Equivalent
MIL-R-26
Style
RW81
RW70U
RW-69V/
RW79U
RW74U/
RW67U
RW68V/
RW78U
Power Rating
(watts)
125°C
25°C
0.5
1
0.5
1
1
2
1
2
2
3
3
4
2
3
3
5
5
7
7
9
10
14
Commercial Range
(ohms)
Min.
Max.
0.1
1.0K
0.1
6.0K
0.1
7.5K
.05
2K
0.1
20K
0.1
24K
0.1
18K
0.1
30K
0.1
60K
0.1
90K
0.1
175K
Non-Inductive Range
(ohms)
Min.
Max.
*
*
*
*
0.1
3.8K
*
*
0.5
10K
Available Resistance
(ohms)
0.5%, 1% 3%, 5%
1-1K
0.1-1K
1-6K
0.1-6K
1-7.5K
0.1-7.5K
1-2K
.05-2K
1-20K
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.
* 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
Dimensions (mm)
Type
A ±0.81
AS-¹/4
6.4
AS-¹/2
7.9
AS-1
9.3
AS-1C
6.5
AS-2
12.2
AS-2B
13.7
AS-2C
11.0
AS-3
17.5
AS-5
22.2
AS-7
31.8
AS-10
46.0
B (max)
2.4
2.4
3.2
2.9
6.3
5.6
4.0
7.2
8.8
8.8
9.8
C (max)
7.9
9.5
10.9
7.7
15.2
16.6
15.1
20.6
24.9
35.0
49.2
D (Lead Diameter)
0.5
0.5
0.5 0.64
0.64 0.8
0.8
0.8
0.8
1.0
1.0
1.0
1.0
1.50 min.
A
(38.1)
D
B
C
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.
* Leads are solder plated. AS-1C leads are copper. All others are 40% conductivity copper sheathed steel.
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.
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
A subsidiary of
TT electronics plc
Issue D · 03.06
91