Surface Mount Fuses
Ceramic Fuse > 501 Series
RoHS Pb
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.
Features
• OperatingTemperature
from -55ºC to +150ºC
• 100% Lead-free, RoHS
compliant and Halogen-
free
• Designed to provide
over-current protection
in high current voltage
regulator module (VRM)
applications
Agency Approvals
• Suitable for both leaded
and lead-free reflow /
wave soldering
AGENCY
AGENCY FILE NUMBER
AMPERE RANGE
10A - 20A
E10480
29862
10A - 20A
Applications
• Voltage Regulator
Module (VRM)
Equipment
• Notebook PC
• DC-DC Converter
Electrical Characteristics for Series
% of Ampere
Additional Information
Ampere Rating
OpeningTime at 25ºC
Rating
100%
350%
10A – 20A
10A – 20A
4 Hours, Minimum
5 Seconds, Maximum
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Electrical Specifications by Item
Agency Approvals
Ampere
Rating
(A)
Max.Voltage
Rating
Interrupting
Nominal
Nominal
Nominal Voltage
Drop At Rated
Current (V)4
Nominal Power
Dissipation At
Rated Current (W)
Amp
Code
Rating
Resistance Melting I2T
(V)
(DC)1
(Ohms)2
(A2Sec.)3
10
12
15
20
010.
012.
015.
020.
32
32
32
32
0.00362
0.00311
0.00250
0.00194
10.385
20.341
39.700
86.360
0.04407
0.04927
0.04843
0.05888
0.4407
0.5912
0.7265
1.1776
x
x
x
x
x
x
x
x
150 A @ 32 VDC
Notes:
Devices designed to carry rated current for 4 hours minimum. It is recommended that
devices be operated continuously at no more than 80% rated current. See “Temperature
Re-rating Curve”for additional re-rating information.
1. DC Interrupting Rating tested at rated voltage with time constant < 0.5 msec.
2. Nominal Resistance measured with < 10% rated current.
3. Nominal Melting I2t measured at 1 msec. opening time. For other I2t data refer to chart.
Devices designed to be mounted with marking code facing up.
4. Nominal Voltage Drop measured at rated current after temperature has stabilized and
with fuse mounted on board with 3-oz Cu trace.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 12/14/17