Axial and Radial Lead Fuses
Subminiature
PICO
®
Fuse
Very Fast-Acting Fuse 275/276 Series
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
Ampere
Rating
1/16-30
1/16-10
200%
12-30
Opening
Time
4 hours, Minimum
5 second, Maximum
10 seconds, Maximum
®
®
100
PHYSICALSPECIFICATIONS:
Materials:
Solder-Coated Copper Leads. R
Solderability:
MIL-STD-202, Method 208.
Lead Pull Force:
MIL-STD-202, Method 211, Test Condition A
(will withstand a 5 lb. axial pull test).
VARIATIONS IN DESIGN:
Picofuses which differ from the stan-
dard versions as presented on this page can be provided for a
commercial or military use. One such design version is where
the picofuse terminates at one end of a pin for use as a single or
multi-pin connector. Extreme accuracy in blowing time at 300% or
more of rating, makes these picofuses suitable for use in circuits
where sequential switching or redundancy may be required. The
small size of the fuse, its non-hygroscopic characteristic and
infinitesimal weight makes it the ideal fuse for micro-electronic
circuits.
PATENTED
10
TIME IN SECONDS
1
0.1
0.01
0.001
0.05 0.1
1/4A
3/8A
1/2A
3/4A
1A
1 1/4A
1 1/2A
2A
2 1/2A
3A
3 1/2A
4A
5A
7A
10A
12A
15A
20A
25A
30A
1
10
100
CURRENT IN AMPERES
1/16A
1/8A
AGENCY APPROVALS:
Recognized under the Components
Program of Underwriters Laboratories and Certified by CSA.
AGENCY FILE NUMBERS:
UL E10480, CSA LR 29862.
INTERRUPTING RATINGS:
300 amperes at rated VDC
50 amperes at rated VAC
ENVIRONMENTALSPECIFICATIONS:
Operating Temperature:
–55°C to 125°C.
Shock:
MIL-STD-202, Method 213, Test Condition I
(100 G’s peak for 6 milliseconds) and per method 2028 (78 G‘s
peak for 11 millseconds).
Vibration:
MIL-STD-202, Method 204A; Test Condition D (vibra-
tions of 10-2000 cps at 20 G‘s).
Insulation Resistance (After Opening):
MIL-STD-202, Method
302, Test Condition A (1/2 Megohm minimum).
Moisture Resistance:
MIL-STD-202, Method 106.
Average Time Current Curves
1000
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Axial and Radial Lead Fuses
Subminiature
PICO
®
FUSE
Very Fast-Acting Fuse 275/276
275
000
Series
B
A
3/4 A
®
®
ORDERING INFORMATION:
B
C
DIA.
PART NUMBER
AXIAL
LEADS
RADIAL
LEADS
AMPERE
RATING
VOLTAGE
RATING
AVERAGE COLD
RESISTANCE IN
OHMS
7.0000
2.1800
0.7400
0.4300
0.2800
0.1640
0.1260
0.0810
0.0550
0.0420
0.0360
0.0275
0.0220
0.0140
0.0100
0.0060
contact Littelfuse
0.0040
contact Littelfuse
contact Littelfuse
contact Littelfuse
E
Transparent
Insulating Sleeve
276
000
Series
A
C
DIA.
E
3/4 A
275.062
275.125
275.250
275.375
275.500
275.750
B
276.062
276.125
276.250
276.375
276.500
276.750
276
001
276
01.5
276
002
276
02.5
276
003
276
03.5
276
004
276
005
276
007
276
010
276
012
276
015
276
020
276
025
276
030
1/16
1/8
1/4
3/8
1/2
3/4
1
1-1/2
2
2-1/2
3
3-1/2
4
5
7
10
12
15
20
25
30
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
32
32
32
32
32
275
001
275
01.5
275
002
275
02.5
275
003
275
03.5
275
004
275
005
275
007
275
010
275
012
275
015
275
020
275
025
275
030
Transparent
Insulating Sleeve
D
Amperage
1/16 - 10
12 - 15
20 - 30
Dimensions in mm (inches)
A
7.11
(.28")
7.11
(.28")
B
38.1
(1.50")
38.1
(1.50")
C
2.36
(.093")
2.36
(.093")
D
8.33
(.328")
9.12
(.359")
E
.635
(.025")
.812
(.032")
7.87 38.1 3.38 10.72 1.016
(.31") (1.50") (.133") (.422") (.040")
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