Axial Lead & Cartridge Fuses
PICO® ll > Very Fast-Acting > 491 Series
PS
E
491 Series, PICꢀ® II, Very Fast-ꢁcting Fuse
Description
The PICO® II Very Fast-Acting Fuse is designed to meet an
extensive array of performance characteristics in a
space-saving subminiature package.
Features
•ꢀ Veryꢀfast-acting
•ꢀ Smallꢀsizeꢀ
•ꢀ Wideꢀcurrentꢀratingꢀrangeꢀ
(125mA - 10A)
•ꢀ Halogen-freeꢀavailableꢀ
•ꢀ Wideꢀoperatingꢀ
temperature range
•ꢀ Lowꢀtemperatureꢀde-rating
•ꢀ RoHSꢀcompliantꢀ
Agency Approvals
Applications
Agency
Agency File Number
Ampere Range
Secondary protection for space constrained applications
•ꢀ Flat–panelꢀdisplayꢀTVꢀ
•ꢀ LCDꢀmonitor
•ꢀ LCDꢀbacklightꢀinverter
•ꢀ Officeꢀmachines
•ꢀ Powerꢀsupply
E10480
LR 29862
125mA - 10A
•ꢀ Audio/Videoꢀsystem
•ꢀ Lightingꢀsystem
•ꢀ Medicalꢀequipment
125mA - 10A
1A - 5A
PS
E
JET 1896-31007-1001
Electrical Characteristics
% of Ampere
Rating
Ampere Rating
1/8-10
OpeningTime
100%
300%
4 Hours, Min.
1/8-10
0.3 Seconds, Max.
Electrical Characteristics
Agency Approvals
Max
Voltage
Rating
(V)
Ampere
Rating
(A)
Ordering
Number
(Std.)
Nominal Cold
Resistance
(Ohms)
Interrupting
Rating
Amp Code
PS
E
.125
.200
.250
.315
.400
.500
.630
.750
.800
1.00
1.25
1.50
1.60
2.00
2.50
3.00
3.15
3.50
4.00
5.00
7. 0 0
0.125
0.200
0.250
0.315
0.400
0.500
0.630
0.750
0.800
001.
0491.125
0491.200
0491.250
0491.315
0491.400
0491.500
0491.630
0491.750
0491.800
0491 001.
0491 1.25
0491 01.5
0491 01.6
0491 002.
0491 02.5
0491 003.
0491 3.15
0491 03.5
0491 004.
0491 005.
0491 007.
0491 010.
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
125
86
1.7000
0.8950
0.6650
0.5000
0.3230
0.3020
0.2050
0.1750
0.1480
0.1280
0.1000
0.0823
0.0700
0.0473
0.0360
0.0295
0.0275
0.0240
0.0204
0.0158
0.0107
0.0072
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
50A at
125Vac and
Vdc
1.25
01.5
01.6
002.
02.5
003.
3.15
03.5
004.
005.
0 0 7.
10.00
010.
86
Note: Higher ampere ratings are available. Please contact LittelfuseTechnical Support or your Littelfuse products representative for assistance.
© 2013 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/26/13