0437004.WR Littelfuse Inc, 0437004.WR Datasheet

FUSE 32V 4A FAST SMD 1206

0437004.WR

Manufacturer Part Number
0437004.WR
Description
FUSE 32V 4A FAST SMD 1206
Manufacturer
Littelfuse Inc
Series
437r
Datasheet

Specifications of 0437004.WR

Fuse Type
Fast Acting
Voltage - Rated
32VAC, 35VDC
Current
4A
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
0.022 Ohm
Melting I²t
1.024
Voltage Rating Vac
32V
Voltage Rating Vdc
32V
Fuse Current
4A
Breaking Capacity
50A @ 32VAC/VDC
Blow Characteristic
Fast Acting
Fuse Case Style
1206
External Width
3.118mm
External Depth
1.67mm
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Color
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
437004
F2889TR

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
0437004.WR
Manufacturer:
LITTLEFUSE
Quantity:
55 000
Part Number:
0437004.WR
Manufacturer:
LITTELFUS
Quantity:
5 819
Part Number:
0437004.WR
Manufacturer:
LITTELFUSE/力特
Quantity:
20 000
© 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 msecs. opening time.
4. Nominal Voltage Drop measured at rated current after temperature has stabilized.
Please refer to www.littelfuse.com/series/437.html for current information.
Ampere
% of Ampere
250mA
375mA
500mA
750mA
Rating
Agency Approvals
Electrical Characteristics for Series
Electrical Specifications by Item
Rating tested at rated voltage with time constant < 0.8 msec.
AGENCY
1.25A
1.75A
2.5A
3.5A
1.5A
(A)
1A
2A
3A
4A
5A
7A
8A
Rating
100%
250%
350%
350%
Code
Amp
.250
.375
.500
.750
002.
02.5
003.
03.5
004.
005.
008.
001.
1.25
01.5
1.75
007 .
437 Series – 1206 Fast-Acting Fuse
AGENCY FILE NUMBER
Rating (V)
Ampere Rating
250mA -500mA
Voltage
Max.
250mA - 8A
750mA - 8A
750mA - 8A
125
125
63
63
63
63
63
63
63
32
32
32
32
32
32
32
LR29862
E10480
50 A @ 32 V AC/35 V DC
50 A @ 125 V AC/DC
Interrupting Rating
50 A @ 63 V AC/DC
Opening Time at 25ºC
5 seconds, Maximum
5 seconds, Maximum
1 second, Maximum
4 hours, Minimum
AMPERE RANGE
Surface Mount Fuses
Ceramic Fuse > 437 Series
0.250A ~ 8A
0.250A ~ 8A
Resistance
Nominal
(Ohms)
0.0703
0.0084
2.290
0.908
0.665
0.360
0.318
0.209
0.058
0.043
0.033
0.027
0.022
1.330
0.016
0.010
Revised: January 24, 2011
2
Melting I
Nominal
(A
17
0.003
0.018
0.064
0.100
0.256
0.324
0.075
0.144
0.225
0.400
0.576
4.900
6.400
0.010
1.024
1.936
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
Rerating Curve”for additional rerating information.
Devices designed to be mounted with marking code facing up.
Description
This 100% Lead-free, RoHS compliant and Halogen-free
fuse series has been designed specifically to provide over
current protection to circuits that see high working ambient
temperatures (up to 150ºC).
The general design ensures excellent temperature stability
and performance reliability.
In addition to this, the high I²t values typical of the
Littelfuse Ceramic Fuse family ensure high inrush current
withstand capability.
Features
Applications
3
2
t
from -55ºC to +150ºC
RoHS compliant
Nominal Voltage
Drop At Rated
Current (V)
0.067
0.78
0.60
0.52
0.45
0.41
0.40
0.39
0.27
0.09
0.17
0.14
0.15
0.16
0.16
0.11
4
Rated Current (W)
Nominal Power
Dissipation At
0.225
0.260
0.335
0.496
0.579
0.345
0.363
0.462
0.560
0.484
0.539
0.195
0.415
0.474
0.618
0.760
and lead-free reflow /
wave soldering
Agency Approvals
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
437 Series
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x

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0437004.WR Summary of contents

Page 1

... Nominal Voltage Drop measured at rated current after temperature has stabilized. © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/437.html for current information. Surface Mount Fuses Ceramic Fuse > 437 Series Description This 100% Lead-free, RoHS compliant and Halogen-free ...

Page 2

... P Time within 5°C of actual peak Temperature ( Ramp-down Rate Time 25°C to peak Temperature ( not exceed Wave Soldering 260°C, 10 seconds max. 437 Series Surface Mount Fuses Transientology Ceramic Fuse > 437 Series Average Time Current Curves 100 115 135 155 0.1 0.01 0.001 ...

Page 3

... Packaging Packaging Option Packaging Specification 8mm Tape and Reel © 2009 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/437.html for current information. Surface Mount Fuses Ceramic Fuse > 437 Series Moisture Resistance Thermal Shock Mechanical Shock Vibration Vibration, High Frequency ...

Page 4

... Introduction to Circuit Protection Introduction to Circuit Protection Transientology 20 © 2009 Littelfuse, Inc. Specifications are subject to change without notice. ...

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