Axial Lead & Cartridge Fuses
3AB > 504 Series Fuse
504 Series, 6.3x32mm Fuse
Description
RoHS
Pb
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
• 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
E10480
N/A
20A-30A
20A-30A
Electrical Characteristic Specifications by Item
Amp Code
020.
025.
030.
Ampere
Rating
(A)
20
25
30
420VDC
500VAC
Max. Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance (Ohms)
5.8
400A@420VDC
1500A@250VAC
200A@500VAC
3.95
3.1
Nominal Melting
I
2
t (A
2
sec)
760
1500
2600
Agency Approvals
x
x
x
x
x
x
Electrical Characteristics for Series
% of Ampere
Rating
100%
135%
200%
20-30A
Ampere Rating
Opening Time
4 Hours, Minimum
1 Hour, Maximum
120 Seconds, Maximum
©
2016
Littelfuse, Inc.
Application testing is strongly recommended. Specifications are subject to change without notice.
Revised:
10/24/16
Axial Lead & Cartridge Fuses
3AB > 504 Series Fuse
Temperature Re-rating Curve
Average Time Current Curves
20A
25A
30A
10000
1000
Time in Seconds
100
10
1
0.1
0.01
0.001
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:
300
Temperature (°C) - Measured on bottom side of board
280
260
240
220
200
180
160
140
120
100
80
60
40
20
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
10
20
30
40
50
60
70
80
90
0
0
Wave Parameter
Preheat:
(Depends on Flux Activation Temperature)
Lead-Free Recommendation
(Typical Industry Recommendation)
Temperature Minimum:
Temperature Maximum:
Preheat Time:
Solder Pot Temperature:
Solder Dwell Time:
100
°
C
150
°
C
60-180 seconds
260
°
C Maximum
2 to 5 seconds
Recommended Hand-Solder Parameters:
Solder Iron Temperature: 350°C +/- 5°C
Heating Time: 5 seconds max.
Note: These devices are not recommended for IR or
Convection Reflow process.
Time (Seconds)
Preheat Time
Dwell Time
Cooling Time
©
2016
Littelfuse, Inc.
Specifications are subject to change without notice.
Revised:
10/24/16
Axial Lead & Cartridge Fuses
3AB > 504 Series Fuse
Product Characteristics
Materials
Terminal Strength
Solderability
Body : Ceramic
Cap : Nickel–plated brass
Leads : Tin-plated Copper
MIL-STD-202, Method 211,
Test Condition A
MIL-STD-202 Method 208
Cap1 : Brand logo, current and voltage
ratings
Cap2 : Series and agency approval marks
Operating
Temperature:
Thermal
Shock:
Vibration
Humidity
–55ºC to 125ºC.
MIL
-STD-202, Method 107 Test Condition B
,
MIL
-STD-202, Method 201
MIL
-STD-202, Method 103, Test Condition A:
High relative humidity (95%) and elevated
temp (40ºC) for 240 hours
MIL
-STD-202, Method 101, Test Condition B
Product Marking
Salt Spray
Dimensions
Measurements displayed in millimeters (inches)
Part Numbering System
0504 xxxx M X E P
504
000P
Series
(axial leaded)
6.985±0.3
(.275")
504
000P
Series
(cartridge)
6.35±0.3
(.25")
31.75±1.12
(1.25")
Series
Amp Code
Refer to Amp Code column of
Electrical Characteristics Table
32.72±1.12
(1.288")
Axial Lead Diameter:
1.20±0.05 (.047")
Axial Lead Length:
39±1 (1.54") TYP
.
Axial Lead Material:
Tin-coated copper
Quantity Code
M = 1000
Packaging Code
X = Filler
Option Codes
Blank: Cartridge Type Fuse
E : Axial Leaded Fuse
Lead-Free
Packaging
Packaging Option
504 Series
Bulk
Bulk
N/A
N/A
1000
1000
MX
MXE
N/A
N/A
Packaging Specification
Quantity
Quantity & Packaging
Code
Reel Size
©
2016
Littelfuse, Inc.
Specifications are subject to change without notice.
Revised:
10/24/16
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