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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Axial Lead & Cartridge Fuses
3AB > Fast-Acting > 506 Series
Dimensions
Product Characteristics
Materials
Body : Ceramic
Cap : Nickel Plated Brass
Terminal Strength
MIL-STD-202, Method 211,
Test condition A
Solderability MIL-STD-202 Method 208
Product Marking
Cap1 : Brand logo, current and voltage
ratings
Cap2 : Series and agency approval marks
Operating
Temperature
–55ºC to +125ºC
Thermal Shock MIL-STD-202, Method 107,
Test condition B: (5 cycles -65ºC to 125ºC)
Vibration MIL-STD-202, Method 201
Humidity MIL-STD-202, Method 103,
Test condition A: High relative humidity (95%)
and Elevated temperature (40ºC) for 240 hours
Salt Spray MIL-STD-202, Method 101, Test condition B
Packaging Option Packaging Specification Quantity
Quantity & Packaging
Code
Reel Size
506 Series
Bulk N/A 1000 MX N/A
Bulk N/A 1000 MXE N/A
Packaging
506 000P Series
(cartridge)
506 000P Series
(axial leaded)
6.35±0.3
(.25")
32.72±1.12
(1.288")
31.75±1.12
(1.25")
6.985±0.3
(.275")
Axial Lead Diameter:
1.2±0.05 (.047")
Axial Lead Length:
38.1±3.15 (1.50") TYP.
Axial Lead Material:
Tin-coated copper
Part Numbering System
0506 MX Exxxx
OPTION Code
PACKAGING Code
QUANTITY Code
AMP Code
SERIES
X = Filler
M = 1000
Refer to Amp Code column of
Electrical Characteristics Table
P
Lead-Free
E = Axial Leaded
Average Time Current CurvesTemperature Re-rating Curve
0.001
0.01
0.1
1
10
100
1000
10000
0.01 0.1 1 10 100
Amps
506016
506020
506015
Time (seconds)
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.