Surface Mount Fuses
Thin Film > 1206 Size > Slo-Blo
®
> 468 Series
468 Series Fuse
Description
The 468 Series Time-Lag (Slo-Blo
®
) SMF is a small (1206
size) thin-film device designed for secondary protection
of circuits used in space constrained applications such as
hand-held portable electronic devices.
This series is 100% lead-free and meets the requirements
of the RoHS directive. New Halogen-Free 468 Series
fuses are available–to order use the “HF” suffix. See Part
Numbering section for additional information.
Features
Agency Approvals
Agency
Agency File number
e10480
lr29862
Ampere rAnge
500mA - 3A
500mA - 3A
• Complies with
electronic industry
environmental standards
for lead reduction.
• Product is compatible
with lead-free solders
and higher temperature
profiles.
• Time delay feature
withstands high inrush
currents and prevents
nuisance openings.
Applications
• Package is visually
distinct from fast-
acting version for easy
identification.
• Top side marking allows
visual verification of
amperage rating.
Electrical Characteristics for Series
% of Ampere
rating
100%
200%
300%
800%
Opening Time at 25
O
c
4 hours, Minimum
1 sec., Min.; 120 sec., Max.
0.05 sec., Min.; 1.5 sec., Max
0.0015 sec., Min.; .05 sec., Max.
Secondary protection for space constrained applications:
• Cell phones
• Battery packs
• Digital cameras
• DVD players
• Hard disk drives.
Electrical Specifications by Item
Ampere
rating
(A)
0.50
1.00
1.50
2.00
2.50
3.00
Amp
code
.500
001.
01.5
002.
02.5
003.
max
Voltage
rating
(V)
63
63
63
63
63
32
35 amperes @63 VAC
50 amperes @63
VDC
50 amperes @32
VAC/VDC
50 amperes @63
VAC/VDC
interrupting
rating
nominal cold
resistance
(Ohms)
0.27000
0.08250
0.04750
0.03240
0.02240
0.01950
nominal
melting
i
2
t (A
2
sec)
0.0310
0.1270
0.2880
0.5060
1.0110
1.2700
nom
Voltage
Drop
(mV)
156.77
94.70
82.32
77.27
73.92
72.95
nom
power
Dissipation
(W)
0.0784
0.0947
0.1235
0.1545
0.1848
0.2189
Agency
Approvals
x
x
x
x
x
x
x
x
x
x
x
x
1. Measured at 10% of rated current, 25˚C.
2. Measured at rated voltage.
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/468.html for current information.
37
Revised: October 4, 2011
468 Series
468 Series
LITTELFUSE [ LITTELFUSE ]
