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501 Datasheet, PDF (1/4 Pages) Littelfuse – Surface Mount Fuses
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 I2t 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
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
Features
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from -55ºC to +150ºC
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over-current protection
in high current voltage
regulator module (VRM)
applications
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compliant and Halogen-
free
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and lead-free reflow /
wave soldering
Applications
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Module (VRM)
Equipment
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Electrical Specifications by Item
Ampere
Rating
(A)
10
12
15
20
Amp
Code
Max. Voltage
Rating
(V)
010.
24
012.
24
015.
24
020.
24
Interrupting
Rating
(DC)1
"!7%$
Nominal Nominal
Resistance Melting I2T
(Ohms)2 (A2Sec.)3
0.00427
10.385
0.00321
20.341
0.00250
36.100
0.00200
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
x
x
0.5870
x
x
0.6908
x
x
1.1871
x
x
/PUFT
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/PNJOBM.FMUJOH*2t measured at 1 msec. opening time. For other I2t data refer to chart.
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devices be operated continuously at no more than 80% rated current. See “Temperature
Rerating Curve”for additional rerating information.
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© 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