Surface Mount Fuses
Ceramic Fuse > 501 Series
501 Series – High Current 1206 Fast-Acting Fuse
Description
The 501 Series is a 100% Lead-free, RoHS compliant and
Halogen-free fuse series designed specifically to provide
over- current protection to circuits that operate under high
working ambient temperature up to 150°C.
The general design ensures excellent temperature stability
and performance reliability.
The high I
2
t values which is typical in the Littelfuse
Ceramic Fuse family, ensure high inrush current withstand
capability.
Agency Approvals
AGENCY
AGENCY FILE NUMBER
E10480
LR29862
AMPERE RANGE
10A - 20A
10A - 20A
Features
from -55ºC to +150ºC
over-current protection
in high current voltage
regulator module (VRM)
applications
Applications
Module (VRM)
Equipment
compliant and Halogen-
free
and lead-free reflow /
wave soldering
Electrical Characteristics for Series
% of Ampere
Rating
100%
350%
Ampere Rating
10A – 20A
10A – 20A
Opening Time at 25ºC
4 Hours, Minimum
5 Seconds, Maximum
Electrical Specifications by Item
Ampere
Rating
(A)
10
12
15
20
Amp
Code
010.
012.
015.
020.
Max. Voltage
Rating
(V)
24
24
24
24
Interrupting
Rating
(DC)
1
Nominal
Nominal
Resistance Melting I
2
T
(Ohms)
2
(A
2
Sec.)
3
0.00427
0.00321
0.00250
0.00200
10.385
20.341
36.100
54.760
Nominal Voltage
Drop At Rated
Current (V)
4
0.05679
0.04891
0.04605
0.05936
Nominal Power Agency Approvals
Dissipation At
Rated Current (W)
0.5679
0.5870
0.6908
1.1871
x
x
x
x
x
x
x
x
2
t measured at 1 msec. opening time. For other I
2
t data refer to chart.
devices be operated continuously at no more than 80% rated current. See “Temperature
Rerating Curve”for additional rerating information.
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/501.html for current information.
25
Revised: August 25, 2009
501 Series
501 Series
LITTELFUSE [ LITTELFUSE ]
