449 Datasheet, PDF (1/4 Pages) Littelfuse – Surface Mount Fuses

Surface Mount Fuses
NANO^2® > Slo-Blo^® > 449 Series
449 Series Fuse
PS
E
Description
The lead free NANO² Slo-Blo^® fuse is RoHS compliant,
Halogen Free and 100% lead-free. This product is fully
compatible with lead-free solder alloys and higher
temperature profiles associated with lead-free assembly.
The Slo-Blo^® design has enhanced inrush withstand
characteristics over the NANO² Fast-Acting Fuse. The unique
time delay feature of this fuse design helps solve the
problem of nuisance “opening” by accommodating inrush
currents that normally cause a fast-acting fuse to open.
Agency Approvals
AGENCY AGENCY FILE NUMBER
E10480
PS
E
NBK030205
AMPERE RANGE
375mA - 5A
1A - 5A
Electrical Characteristics for Series
% of Ampere
Rating
100%
200%
300%
800%
Opening Time
4 hours, Minimum
1 sec., Min.; 60 sec., Max.
0.2 sec., Min.; 3 sec., Max
0.02 sec., Min.; 0.1 sec., Max.
Features
t
-FBEGSFF
BOE
)BMPHFO

Free
t
4MP#MP^®
t
4NBMM
TJ[F

t
8JEF
SBOHF
PG
DVSSFOU

ratings available
t
8JEF
PQFSBUJOH

temperature range
t
-PX
UFNQFSBUVSF

de-rating
Applications
Secondary protection for space constrained applications:
t
/PUFCPPL
1$
t
5FMFDPN
TZTUFN
t
-$%1%1
57

t
8JSFMFTT
CBTFTUBUJPO
t
-$%
NPOJUPS
t
8IJUF
HPPET
t
-$%1%1
QBOFM
t
(BNF
DPOTPMF
t
-$%
CBDLMJHIU
JOWFSUFS
t
1PSUBCMF
%7%
QMBZFS
t
1PXFS
TVQQMZ
t
/FUXPSLJOH

t
1$
TFSWFS
t
$PPMJOH
GBO
TZTUFN
t
4UPSBHF
TZTUFN
t
0GÃ¥DF
"VUPNBUJPO

equipment
t
#BUUFSZ
DIBSHJOH
DJSDVJU

protection
t
*OEVTUSJBM
FRVJQNFOU
t
.FEJDBM
FRVJQNFOU
t

"VUPNPUJWF
Electrical Specifications by Item
Ampere
Rating
(A)
0.375
Amp Code
0.375
Max
Voltage
Rating
(V)
125
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
1.5130
0.500
0.500
125
0.7633
0.750
0.750
125
0.4080
1.00
001.
1.50
01.5
2.00
002.
2.50
02.5
3.00
003.
125
0.2516
125
50 amperes @125 VAC/
VDC
0.1186
125
0.0708
125
PSE: 100 amperes
@100 VAC
0.0400
125
0.0352
3.50
03.5
125
0.0261
4.00
004.
125
0.0227
5.00
005.
125
0.0171
Notes: - l²t calculated at 8ms. Resistance is measured at 10% of rated current, 25ºC
Nominal
Melting
I²t (A²sec)
0.088
0.258
0.847
1.76
4.70
6.76
13.18
19.55
32.70
40.80
59.59
Agency Approvals
PS
E
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/449.html for current information.
53
Revised: December 17, 2010
449 Series