04401.25WR Littelfuse Inc, 04401.25WR Datasheet
04401.25WR
Manufacturer Part Number
04401.25WR
Description
FUSE 63V HIGH I2T 1206 1.25A
Manufacturer
Littelfuse Inc
Series
440r
Datasheet
1.0440.375WR.pdf
(4 pages)
Specifications of 04401.25WR
Fuse Type
Slow Blow, Time Lag
Voltage - Rated
50VAC, 50VDC
Current
1.25A
Package / Case
1206 (3216 Metric)
Size / Dimension
0.126" L x 0.063" W x 0.032" H (3.20mm x 1.60mm x 0.82mm)
Mounting Type
Surface Mount
Operating Temperature
-55°C ~ 150°C
Dc Cold Resistance
0.227 Ohm
Melting I²t
0.402
Color
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
4401.25WR
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Notes:
1. AC Interrupting Rating tested at rated voltage with unity power factor. DC Interrupting
2. Nominal Resistance measured with < 10% rated current.
3. Nominal Melting I²t measured at 1 msec. opening time.
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.
Please refer to www.littelfuse.com/series/440.html for current information.
Ampere
% of Ampere
Agency Approvals
Electrical Characteristics for Series
Electrical Specifications by Item
Rating
Rating tested at rated voltage with time constant < 0.8 msec.
AGENCY
0.375
0.25
0.75
1.25
1.75
(A)
0.5
2.5
3.5
1.5
1
2
3
4
5
7
8
Rating
100%
350%
Code
Amp
.250
.375
.500
.750
002.
02.5
003.
03.5
004.
005.
008.
001.
1.25
01.5
1.75
007 .
440 Series,
AGENCY FILE NUMBER
Ampere Rating
Rating (V)
Voltage
0.25A - 8A
0.25A - 8A
Max.
125
125
63
63
50
50
50
32
32
32
32
32
32
32
32
32
LR 29862
E10480
50 A @ 125 V AC/DC
Interrupting Rating
50 A @ 63 V AC/DC
50 A @ 63 V AC/DC
50 A @ 32 V AC/DC
50 A @ 50 V DC
50 A @ 50 V AC
(AC/DC)
1206 High I
Opening Time at 25ºC
5 secs., Maximum
4 hours, Minimum
1
AMPERE RANGE
Surface Mount Fuses
Ceramic Fuse > 440 Series
.25A - 8A
.25A - 8A
Resistance
2
Nominal
(Ohms)
t Fuse
0.04518
0.03802
0.02850
0.02252
0.00753
0.00634
0.01845
0.01553
0.01164
0.4624
0.3096
0.2268
0.8140
0.1759
2.140
1.216
Revised: January 24, 2011
2
Melting I
Nominal
(A
0.00649
0.02642
0.40200
0.50652
0.01455
0.09312
0.21054
1
0.3312
0.4326
0.8191
8.464
12.95
1.232
1.789
2.601
4.761
2
Sec.)
Devices designed to carry rated current for 4 hours minimum. It is recommended that
devices be operated continuously at no more than 80% rated current. See “Temperature
Derating Curve”for additional derating information.
Devices designed to be mounted with marking code facing up.
Description
The 440 Series is a 100% Lead-free, RoHS compliant and
Halogen-free fuse series designed specifically to provide
over-current protection to circuits that operate under high
working ambient temperatures up to 150ºC and high inrush
currents.
The general design ensures excellent temperature stability
and performance reliability.
This high I
inrush current withstand capability to avoid nuisance fuse
open.
Features
Applications
3
2
t
from -55ºC to +150ºC
compliant and Halogen-
free
Nominal Voltage
Drop At Rated
Current (V)
2
0.5260
0.4993
0.4831
0.3983
0.3457
0.3240
0.3215
0.0777
0.0792
0.0747
0.0742
0.0757
0.0709
0.0654
0.0696
0.0655
t fuse series is designed to have ultra high
4
Rated Current (W)
Nominal Power
Dissipation At
0.132
0.187
0.242
0.299
0.346
0.405
0.482
0.136
0.158
0.187
0.223
0.265
0.284
0.327
0.487
0.524
and lead-free reflow /
wave soldering
Agency Approvals
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
2
t values
440 Series
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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04401.25WR Summary of contents
Page 1
Series, 1206 High I Agency Approvals AGENCY AGENCY FILE NUMBER E10480 LR 29862 Electrical Characteristics for Series % of Ampere Ampere Rating Opening Time at 25ºC Rating 100% 0.25A - 8A 4 hours, Minimum 350% 0.25A - 8A 5 ...
Page 2
Introduction to Circuit Protection Introduction to Circuit Protection Temperature Derating Curve 140 120 100 -65 -45 - TEMPERATURE (°C) Note: 1. Derating depicted in this curve is in addition to the standard ...
Page 3
Product Characteristics Body: Advanced Ceramic Materials Terminations (100% Lead-free) Element Cover Coating: Lead-free Glass Moisture Sensitivity Level Solderability Humidity Test Resistance to Solder Heat Dimensions 3.200 ± .1778 [.126 ± .007] X 1.000 1.500 [.039] ...
Page 4
Introduction to Circuit Protection Introduction to Circuit Protection Transientology 4 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. ...