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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Surface Mount Fuses
Ceramic Fuse > 501 Series
Materials
Body: Advanced Ceramic
Terminations: Ag / Ni / Sn (100% Lead-free)
Element Cover Coating: Lead-free Glass
Moisture
Sensitivity Level
IPC/JEDEC J-STD-020, Level 1
Solderability IPC/ECA/JEDEC J-STD-002, Condition B
Humidity Test MIL-STD-202, Method 103, Conditions D
Resistance to
Solvents
MIL-STD-202, Method 210, Condition B
Product Characteristics
Moisture Resistance MIL-STD-202, Method 106
Thermal Shock
MIL-STD-202, Method 107,
Condition B
Mechanical Shock
MIL-STD-202, Method 213,
Condition A
Vibration MIL-STD-202, Method 201
Vibration,
High Frequency
MIL-STD-202, Method 204,
Condition D
Dissolution of
Metallization
IPC/ECA/JEDEC J-STD-002,
Condition D
Terminal Strength IEC 60127-4
Dimensions
Packaging
Part Marking System
Packaging
Option
Packaging
Specification
Quantity
Quantity &
Packaging Code
8mm Tape
and Reel
EIA-481, IEC
60286, Part 3
3000 WR
Part Numbering System
20
1. 00
[.04]
1.63 +.10/-.20
[.064 +.004/-.008]
3.200 ± .1778
[.126 ± .007]
0.835 ± 0.15
[.033 ± .006]
.520 ± .200
[.020 ± .008]
1.500
[.059]
1.800
[.071]
3.500
[.138]
1. 000
[.039]
Amp Code Marking Code
010.
10
012.
12
015.
15
020.
20
0501 020. W R
Series
AMP Code
W = 3000 pcs
Quantity
R = Reel Pack
Packing Code
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test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
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