Datasheet

61
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Surface Mount Fuses
452/454 Series
NANO
2®
> Slo-Blo
®
> 452/454 Series
452/454 Series
Please refer to www.littelfuse.com/series/452.html
or /454.html for current information.
452/454 Series Fuse
Description
The NANO
2
Slo-Blo
®
fuse has enhanced inrush withstand
characteristics over the NANO
2
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.
Features
t 5JNF-BH4MP#MP
t 4NBMMTJ[F
t 8JEFSBOHFPGDVSSFOU
SBUJOHBWBJMBCMFN"
UP"
t 8JEFPQFSBUJOH
temperature range
t -PXUFNQFSBUVSF
de-rating
t 3P)4DPNQMJBOU
t )BMPHFO'SFF
Electrical Characteristics for Series
% of Ampere
Rating
Opening Time
100% 4 hours, Minimum
200% 1 sec., Min.; 60 sec., Max.
 TFD.JOTFD.BY
800% 0.02 sec., Min.; 0.1 sec., Max.
PS
E
Electrical Specications by Item
Ampere
Rating
(A)
Amp Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I
2
t (A
2
sec)
Agency Approvals
PS
E
  
BNQFSFT!7"$7%$
BNQFSFT!7%$
14&BNQFSFT!7"$
1.2000 0.101 x x
    0.240 x x
    0.904 x x
001. 001.   1.98 x x x
     xxx
2.00 002.   8.20 x x x
     xxx
    20.16 x x x
   0.0224  xxx
4.00 004.  0.0186  xxx
     xxx
  
BNQFSFT!7"$
BNQFSFT!7%$
  xx
8 008. 
BNQFSFT!7"$
BNQFSFT!7%$
0.0088  xx
12 012.  0.0061 260.46 x x
Applications
t /PUFCPPL1$
t -$%1%157
t -$%NPOJUPS
t -$%1%1QBOFM
t -$%CBDLMJHIUJOWFSUFS
t 1PSUBCMF%7%QMBZFS
t 1PXFSTVQQMZ
t /FUXPSLJOH
t 1$TFSWFS
t $PPMJOHGBOTZTUFN
t 4UPSBHFTZTUFN
t 5FMFDPNTZTUFN
t 8JSFMFTTCBTFTUBUJPO
t 8IJUFHPPET
t (BNFDPOTPMF
t 0GåDF"VUPNBUJPO
equipment
t #BUUFSZDIBSHJOHDJSDVJU
protection
t *OEVTUSJBMFRVJQNFOU
t .FEJDBMFRVJQNFOU
t "VUPNPUJWF
Agency Approvals
AGENCY AGENCY FILE NUMBER AMPERE RANGE
E10480 375mA - 12A
LR29862 375mA - 12A
PS
E
NBK030205-E10480B 1A - 5A
Notes:
- l
2
t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC
Revised: May 3, 2011