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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Axial Lead & Cartridge Fuses
3AB > High I
2
t > 328 Series
Product Characteristics
Operating Temperature –55°C to +125°C
Thermal Shock
MIL-STD-202, Method 107, Test
Condition B: (5 cycles –65°C to
+125°C)
Vibration MIL-STD-202, Method 201
Humidity
MIL-STD-202, Method 103, Test
Condition A. High RH (95%) and
elevated temperature (40°C) for 240
hours.
Salt Spray
MIL-STD-202, Method 101, Test
Condition B
Materials Body: Ceramic
Cap: Nickel–plated brass
Leads: Tin–plated copper
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
Dimensions
Packaging
Part Numbering System
Packaging Option Packaging Specification Quantity
Quantity &
Packaging Code
Taping Width
328 Series
Bulk N/A 1000 MX N/A
6.35 (.25”)
±0.3
32.72
(1.288˝)
±1.12
38.1
(1.50˝)
±3.15
1.20 (0.05˝)
±0.05
31.75
(1.25˝)
±1.12
6.985 (.275˝)
±0.3
0328 M X E Pxxxx
Lead-free
Packaging Code
Quantity Code
Amp Code
Series
X = Filler
Option Codes
Blank: Cartridge Type Fuse
E: Axial Lead Fuse
M = 1000
Refer to Amp Code column of
Electrical Characteristics Table
Measurements displayed in millimeters (inches).
Recommended Accessories
Accessory
Type
Series Description
Max
Application
Voltage
Max
Application
Amperage
Block
354 Low Profile OMNI-BLOK
®
Fuse Block
600
30
359 High Current Screw Terminal Fuse Block 30
Clip
122 High Current Traditional PC Board Fuse Clip 1000 30
Notes:
1. Do not use in applications above rating.
2. Please refer to fuseholder data sheet for specific re-rating information.
3. Please contact factory for applications greater than the max voltage and amperage shown.
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.