Datasheet

Axial Lead & Cartridge Fuses
3AB > 504 Series Fuse
504 Series, 6.3x32mm Fuse
RoHS
Pb
Description
A 420VDC and 500VAC rated ceramic fuse with
remarkable interrupting rating in a compact 6.3 x 32mm
package, which is well suited for circuit protection in high
energy applications.
Features
• In accordance
with Underwriters
Laboratories Standard
UL 248-14
Agency Approvals
Agency
Agency File Number
Ampere Range
E10480
25A-30A
N/A
25A-30A
• RoHS compliant and
Lead-free
• Compact form factor of
6.3mm x 32mm
• Available in cartridge and
axial lead form and with
various lead forming
dimensions.
Applications
• High Voltage AC/DC
power application
Electrical Characteristic Specifications by Item
Amp Code
Ampere
Rating
(A)
025.
25
030.
30
Agency Approvals
Max. Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance (Ohms)
Nominal Melting
I2t (A2 sec)
420VDC
500VAC
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3.95
1500
x
x
3.1
2600
x
x
Electrical Characteristics for Series
% of Ampere
Rating
Ampere Rating
100%
135%
200%
Opening Time
4 Hours, Minimum
25-30
1 Hour, Maximum
120 Seconds, Maximum
© 2016 Littelfuse, Inc.
Application testing is strongly recommended. Specifications are subject to change without notice.
Revised: 02/26/16
Axial Lead & Cartridge Fuses
3AB > 504 Series Fuse
Average Time Current Curves
Temperature Re-rating Curve
25A
30A
10000
Time in Seconds
1000
100
10
1
0.1
0.01
1
10
100
Current in Amperes
1000
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.
Soldering Parameters - Wave Soldering
Recommended Process Parameters:
Wave Parameter
280
260
240
Preheat:
220
(Depends on Flux Activation Temperature)
200
180
160
140
Lead-Free Recommendation
(Typical Industry Recommendation)
Temperature Minimum:
100°C
Temperature Maximum:
Preheat Time:
150°C
60-180 seconds
120
100
80
60
Solder Pot Temperature:
260°C Maximum
Solder Dwell Time:
2 to 5 seconds
40
Recommended Hand-Solder Parameters:
Time (Seconds)
Cooling Time
Preheat Time
Dwell Time
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16
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.
Axial Lead & Cartridge Fuses
3AB > 504 Series Fuse
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:
–55ºC to 125ºC.
Thermal
Shock:
MIL-STD-202, Method 107, Test Condition B
Vibration
MIL-STD-202, Method 201
Humidity
MIL-STD-202, Method 103, Test Condition A:
High relative humidity (95%) and elevated
temp (40ºC) for 240 hours
Salt Spray
MIL-STD-202, Method 101, Test Condition B
Part Numbering System
Dimensions
Measurements displayed in millimeters (inches)
504 000P Series
(cartridge)
0504 xxxx M X E P
504 000P Series
(axial leaded)
6.35±0.3
(.25")
Series
Amp Code
Refer to Amp Code column of
Electrical Characteristics Table
6.985±0.3
(.275")
31.75±1.12
(1.25")
Quantity Code
32.72±1.12
(1.288")
Axial Lead Diameter:
1.20±0.05 (.047")
M = 1000
Axial Lead Length:
39±1 (1.54") TYP.
Packaging Code
Axial Lead Material:
Tin-coated copper
Option Codes
X = Filler
Blank: Cartridge Type Fuse
E : Axial Leaded Fuse
Lead-Free
Packaging
Packaging Specification
Quantity
Quantity & Packaging
Code
Reel Size
Bulk
N/A
1000
MX
N/A
Bulk
N/A
1000
MXE
N/A
Packaging Option
504 Series
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 02/26/16