Datasheet

Axial Lead & Cartridge Fuses
5×20 mm > Fast-Acting > 487 Series
487 Series, 5×20 mm, Fast-Acting Fuse
RoHS
Pb
Description
The 487 Series is a 420VAC/420VDC rated 5x20mm fastacting ceramic body fuse, designed to ensure the best
coordination between a power supply unit (PSU) and an
electrical circuit breaker panel during short-circuit and overcurrent faults. When installed in a PSU, the 487 series
fuse opens faster than the circuit breaker and removes
the problematic PSU while preventing the circuit breaker
from shutting down other critical systems. With 420VAC
characteristics, the 487 Series is well suited for highenergy applications like 3-phase power supplies, inverters,
and ballasts. With 420VDC characteristics, it is optimal
for high-voltage DC power grid in data centers, telecom
applications, and intelligent commercial buildings.
Agency Approvals
Agency
Agency File Number
Ampere Range
E10480
8 - 20A
• Lower I2t and faster
tripping
• Rated voltage @ 420VAC,
420VDC
J 50293210
8 - 20A
• High current ratings up
to 20A in a 5x20mm
footprint
• Available in cartridge and
axial leaded versions
Electrical Characteristics for Series
% of Ampere
Rating
Opening Time
100%
60 minutes, Minimum
210%
30 minutes, Maximum
275%
0.04 sec., Min.; 20 sec. Max.
400%
0.01 sec., Min.; 1.0 sec. Max.
1000%
0.03 sec., Max.
Features
• RoHS compliant and
Lead-free
Applications
• Telecom power supplies
• Data center server power supplies
• Higher energy and power efficient applications
© 2016 Littelfuse, Inc.
Application testing is strongly recommended. Specifications are subject to change without notice.
Revised: 05/10/16
Axial Lead & Cartridge Fuses
5×20 mm > Fast-Acting > 487 Series
Electrical Characteristic Specifications by Item
Amp Code
Amp Rating
Max Voltage
Rating (V)
Interrupting
Rating
Nominal
Nominal Melting
Cold Resistance
I2t (A2 sec.)
(Ohms)
Agency Approvals
008.
8
0.0134
65
x
x
010.
10
0.0093
130
x
x
12.5
12.5
0.0078
170
x
x
015.*
15
0.0075
190
x
x
420VDC
420VAC
[email protected]
[email protected]
016.
16
0.0064
260
x
x
020.
20
0.0043
390
x
x
* Additional 1000A @ 250VAC interrupting rating for 15A
Average Time Current Curves
8A
10A
12.5A
15A
16A
20A
Temperature Rerating Curve
10000
1000
TIME IN SECONDS
100
10
1
0.1
0.01
Note:
Rerating depicted in this curve is in addition to the standard derating of 25%
for continuous operation.
0.001
1
10
100
CURRENT IN AMPERES
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/10/16
1000
Axial Lead & Cartridge Fuses
5×20 mm > Fast-Acting > 487 Series
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
40
(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
Recommended Hand-Solder Parameters:
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
Time (Seconds)
Note: These devices are not recommended for IR or
Convection Reflow process.
Cooling Time
Preheat Time
Solder Iron Temperature: 350° C +/- 5°C
Heating Time: 5 seconds max.
Dwell Time
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
Cap 1: Brand logo, current and voltage
ratings
Cap 2: Series and agency approval
markings
Dimensions
Operating Temperature
–55ºC to +125ºC
Thermal Shock
MIL-STD-202, Method 107, Test
Condition B
Vibration
MIL-STD-202, Method 201
Moisture Resistance
MIL-STD-202, Method 103, Test
Condition A
Salt Spray
MIL-STD-202, Method 101, Test
Condition B
Part Numbering System
All dimensions in mm
0487 xxxx M X E P
20±0.5
Series
5.2+0.1/-0.2
Amp Code
Refer to Amp Code column of
Electrical Characteristics Table
5.1±0.6
40.00±1.0
Quantity Code
21.5±1.0
M = 1000
5.5±0.3
Packaging Code
X = Filler
ø1.00±0.05*
Option Code
Blank: Cartridge Type Fuse
E = Axial Leaded Fuse
Note:
*Rating of 20A has 1.20±0.05 diameter lead
P: Lead-Free
Packaging
Packaging Option
Packaging Specification
Quantity
Quantity &
Packaging Code
Reel Size
N/A
N/A
1000
1000
MX
MXE
N/A
N/A
487 Series
Bulk
Bulk
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 05/10/16