Axial Lead & Cartridge Fuses 328 Series, Lead-Free 3AB

Axial Lead & Cartridge Fuses
3AB > High I2t > 328 Series
328 Series, Lead-Free 3AB, High Surge Withstand Fuse
RoHS
Pb
Description
The 328 Series is a 300VAC rated, 10kA surge withstand,
6.3×32mm ceramic fuse, designed in accordance to
UL248-14 Standard, provided in cartridge and axial-lead
packages.
Features
– 20 hits of 10kA 8/20μs
surge
• Small form factor
(6.3×32mm) with
cartridge and axial-lead
package options
– Meets ANSI/IEEE
C62.41.2, Category
C-High
• Breaking capacity:
[email protected],
[email protected]
– Meets US Dept of
Energy (DOE) MSSLC/
CBEA street lighting
and parking lot
lighting, elevated level
• Lead-free, RoHS
compliant, halogen-free
• High surge withstand
capability
Agency Approvals
Agency
Agency File Number
Ampere Range
T 50260582 01
21A
E10480
21A
• Compliant with UL24814 and NFPA 70
(NEC) primary fusing
requirements
• Operating temperature:
–55°C to 125°C
Electrical Characteristics for Series
Applications
% of Ampere Rating
Opening Time
100%
4 hours, minimum
200%
120 sec., maximum
Commercial and outdoor LED luminaries
Outdoor electronics and electrical equipment.
Surge protection for telecom application.
Electrical Characteristic by ltem
Amp Rating
(A)
Voltage Rating
(VAC)
Interrupting
Rating
Surge
Rating
Nominal Cold
Resistance
(Ohms)
Nominal Melting
I2t (A2 sec)
21
300
[email protected]
[email protected]
1.2/50 - 8/20µs,
20kV/10kA 20
hits
0.0042
4,800
Agency Approvals
X
X
Additional Information
Datasheet
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 06/18/15
Resources
Samples
Axial Lead & Cartridge Fuses
3AB > High I2t > 328 Series
Temperature Re-rating Curve
21 A
Average Time Current Curves
10000
1000
Time (seconds)
100
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
10
1
0.1
0.01
0.001
10
100
1000
Amps
Soldering Parameters - Wave Soldering
Recommended Process Parameters:
280
Wave Parameter
260
240
Lead-Free Recommendation
Preheat:
220
(Depends on Flux Activation Temperature)
200
180
160
140
120
100
80
60
(Typical Industry Recommendation)
Temperature Minimum:
100°C
Temperature Maximum:
Preheat Time:
150°C
60–180 seconds
Solder Pot Temperature:
260°C Maximum
Solder Dwell Time:
2–5 seconds
40
Recommended Hand-Solder Parameters:
Time (Seconds)
Cooling Time
Preheat Time
Dwell Time
240
230
220
210
200
190
180
170
160
150
140
130
120
110
90
100
80
70
60
50
40
30
0
0
20
20
10
Temperature (°C) - Measured on bottom side of board
300
Solder Iron Temperature: 350°C ±5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/18/15
Axial Lead & Cartridge Fuses
3AB > High I2t > 328 Series
Product Characteristics
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
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
MIL-STD-202, Method 103, Test
Condition A. High RH (95%) and
elevated temperature (40°C) for 240
hours.
MIL-STD-202, Method 101, Test
Condition B
Humidity
Salt Spray
Dimensions
Part Numbering System
Measurements displayed in millimeters (inches).
0328 xxxx M X E P
Series
6.985 (.275˝)
±0.3
6.35 (.25”)
±0.3
31.75
(1.25˝)
±1.12
1.20 (0.05˝)
±0.05
32.72
(1.288˝)
±1.12
Amp Code
Refer to Amp Code column of
Electrical Characteristics Table
Quantity Code
M = 1000
38.1
(1.50˝)
±3.15
Packaging Code
X = Filler
Option Codes
Blank: Cartridge Type Fuse
E: Axial Lead Fuse
Lead-free
Packaging
Packaging Option
Packaging Specification
Quantity
Quantity &
Packaging Code
Taping Width
N/A
1000
MX
N/A
328 Series
Bulk
© 2015 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 06/18/15