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272.010 Datasheet(PDF) 1 Page - Littelfuse

Part # 272.010
Description  Axial Lead and Cartridge Fuses
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Manufacturer  LITTELFUSE [Littelfuse]
Direct Link  http://www.littelfuse.com
Logo LITTELFUSE - Littelfuse

272.010 Datasheet(HTML) 1 Page - Littelfuse

  272.010 Datasheet HTML 1Page - Littelfuse  
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Subminiature
Axial Lead and Cartridge Fuses
MICROFUSE Very Fast-Acting Type 272/273/274/278/279 Series
286
www .littelfuse .com
Developed originally for the U.S. Space Program, MICRO fuse provides
reliability in a compact design. The MICRO fuse is available in plug in or
radial lead styles and a complete range of ampere ratings from 1/500 to
5 amperes to suit a wide variety of design needs.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Ampere
Opening
Rating
Rating
Time
100%
1/500 –5
4 hours, Minimum
200%
1/500 –3/10
5 seconds, Maximum
4/10 –5
2 seconds, Maximum
AGENCY APPROVALS: Recognized under the Components Program
of Underwriters Laboratories and Certified by CSA.
AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.
INTERRUPTING RATING: 10,000 amperes at 125 VAC/VDC.
FUSES TO MIL SPEC: 273 Series is available in Military QPL type
(FM02). To order, change 273 to 274.
Operating Temperature:
273 and 279: –55°C to 85°C.
272 and 278: –55°C to 125°C
PATENTED
ORDERING INFORMATION:
Plug-In
Radial Lead
Nominal
Nominal
Catalog Catalog Catalog Catalog
Ampere
Voltage
Resistance
Melting I2t
Number Number Number Number
Rating
Rating
Cold Ohms
A2 Sec.
272.002
273.002 278.002
279.002
1/500
125
2200
0.00000000845
272.005
273.005 278.005
279.005
1/200
125
280 0.
0.0000000810
272.010
273.010 278.010
279.010
1/100
125
80.0
0.000000462
272.015
273.015 278.015
279.015
1/64
125
44.0
0.00000123
272.031
273.031 278.031
279.031
1/32
125
16.0
0.00000810
272.050
273.050 278.050
279.050
1/20
125
3.20
0.0000666
272.062
273.062 278.062
279.062
1/16
125
2.32
0.000115
272.100
273.100 278.100
279.100
1/10
125
1.25
0.000385
272.125
273.125 278.125
279.125
1/8
125
1.0
0.000691
272.200
273.200 278.200
279.200
2/10
125
2.30
0.00409
272.250
273.250 278.250
279.250
1/4
125
1.75
0.00640
272.300
273.300 278.300
279.300
3/10
125
1.25
0.00945
272.400
273.400 278.400
279.400
4/10
125
0.227
0.0251
272.500
273.500 278.500
279.500
1/2
125
0.167
0.0716
272.600
273.600 278.600
279.600
6/10
125
0.430
0.0411
272.700
273.700 278.700
279.700
7/10
125
0.324
0.0710
272.750
273.750 278.750
279.750
3/4
125
0.293
0.0900
272.800
273.800 278.800
279.800
8/10
125
0.271
0.113
272 001
273 001 278 001
279 001
1
125
0.0880
0.0648
272 01.5 273 01.5 278 01.5 279 01.5
11/2
125
0.0578
0.160
272 002
273 002 278 002
279 002
2
125
0.0425
0.300
272 003
273 003 278 003
279 003
3
125
0.0275
0.759
272 004
273 004 278 004
279 004
4
125
0.0202
1.38
272 005
273 005 278 005
279 005
5
125
0.0156
2.21
100
10
1
0.1
0.01
0.001
1
10
100
0.01
0.1
0.005
CURRENT IN AMPERES
Average Time Current Curves
7.30
(.29")
(.17")
8.89
(.35")
2.54 (.10")
7.30
(.29")
25.4 (1.0")
2.54 (.10")
25.4 (1.0")
2.54 (.10")
5.97
(.235")
6.35
(.25")
5.97
(.235")
2.54 (.10")
8.89
(.35")
6.35
(.25")
272 000 Series
273 000 Series
278 000 Series
279 000 Series
NOTE: Amperage and voltage rating stamped on cap. Leads are solder-coated
copper; .025" diameter.
(.17")
4.32
4.32
®
QPL
®
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