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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Axial Lead & Cartridge Fuses
PICO
®
ll > Very Fast-Acting Fuse > 251/253 Series
Electrical Specifications by Item
Note: Higher ampere ratings are available. Please contact Littelfuse Technical Support or your Littelfuse products representative for assistance.
Ampere
Rating
(A)
Amp
Code
Ordering
Number
(Std.)
Ordering
Number
(Mil.)
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal
Cold
Resistance
(Ohms)
Nominal
Melting
I
2
t (A
2
sec)
Nom
Voltage
Drop
(V)
Agency Approvals
PS
E
TUV
QP
L
.062 .062 251.062 253.062 125
300 A @
125VDC
50A@125VAC
For CCC 7A:
70A@125VAC
For CCC 10A:
100A@
125VAC
7.000 0.000113 1. 4 x x x
.125 .125 251.125 253.125 125 1.700 0.00174 0.285 x x x
.200 .200 251.200 253.200 125 0.895 0.0048 0.345 x x
.250 .250 251.250 253.250 125 0.665 0.0116 0.24 x x x
.375 .375 251.375 253.375 125 0.395 0.0296 0.215 x x x
.500 .500 251.500 253.500 125 0.302 0.0598 0.2165 x x x x x
.630 .630 251.630 125 0.205 0.08 0.188 x x
.750 .750 251.750 253.750 125 0.175 0.153 0.176 x x x x
1. 0 0 0 01. 251001. 253001. 125 0.128 0.256 0.194 x x x x x x
1.25 1.25 2511.25 125 0.100 0.390 0.2 x x x
1.50 01. 5 25101.5 25301.5 125 0.0823 0.587 0.21 x x x x x
2.00 002. 251002. 253002. 125 0.0473 0.405 0.141 x x x x x x
2.50 02.5 25102.5 125 0.0360 0.721 0.132 x x x x x
3.00 003. 251003. 253003. 125 0.0295 1. 1 9 0.131 x x x x x x
3.50 03.5 25103.5 125 0.0240 1.58 0.1205 x x x x
4.00 004. 251004. 253004. 125 0.0204 2.45 0.114 x x x x x x
5.00 005. 251005. 253005. 125 0.0158 4.14 0.11 x x x x x x
7. 0 0 0 0 7. 251007. 253007. 125 0.0107 10.4 0.102 x x x x
10.0 010. 251010. 253010. 125 0.0072 25.5 0.1 x x x x
12.0 012. 251012. 32 0.0059 45.2 0.0878 x x
15.0 015. 251015. 253015. 32 0.00446 68.8 0.071 x x x
300A@32VDC
& 50A@32VAC
253 Series
Only