0440.750WR Littelfuse Inc, 0440.750WR Datasheet
0440.750WR
Manufacturer Part Number
0440.750WR
Description
T&R / FUSE 63V High I2T 1206 .750A
Manufacturer
Littelfuse Inc
Series
440r
Datasheet
1.0440.375WR.pdf
(4 pages)
Specifications of 0440.750WR
Fuse Type
Slow Blow, Time Lag
Voltage - Rated
63VAC, 63VDC
Current
750mA
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
0.462 Ohm
Melting I²t
0.09312
Color
-
Voltage Rating Vac
63V
Voltage Rating Vdc
63V
Fuse Current
750mA
Fuse Size Code
1206
Blow Characteristic
Fast Acting
Fuse Case Style
SMD
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
440.750WR
© 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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0440.750WR 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 derating of 20% for continuous operation. For continuous operation at 75 degrees celsius, the fuse should be derated as follows (0.80)(0.85 ...
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. ...