77
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Surface Mount Fuses
NANO2® > 250V UMF > Fast-Acting > 464 Series
464 Series
Please refer to www.littelfuse.com/series/464.html for current information.
464 Series
464 Series Fuse
Description
Agency Approvals
Electrical Characteristics for Series
Features
t 'BTU"DUJOH
t -JTUFEUP*&$
6OJWFSTBM.PEVMBS
'VTF-JOLT6.'
7
t 7"$7PMUBHFSBUJOH
t 3P)4DPNQMJBOUBOE
)BMPHFO'SFF
PS
E
% of Ampere
Rating Opening Time
 IPVS.JOJNVN
 NJOVUFT.BYJNVN
 TFD.JOTFD.BY
AGENCY AGENCY FILE NUMBER AMPERE RANGE
PS
ENBK30502-E108480A 1A - 6.3A
E184655A,B 500mA - 6.3A
Electrical Specications by Item
Ampere
Rating
(A)
Amp Code
Max
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
It (A2sec)
Nominal
Voltage Drop
(mV)
Agency Approvals
PS
E
  
BNQFSFT
!7"$
   Y
      Y
      YY
      YY
      YY
      YY
      YY
      YY
      YY
      YY
      Y Y
5IF4VSGBDF.PVOU/BOP76.'QSPEVDUGBNJMZ
DPNQMJFTXJUI*&$1VCMJDBUJPO*&$6OJWFSTBM
.PEVMBS'VTF-JOLT<6.'>5IJT*&$TUBOEBSEIBTCFFO
BDDFQUFECZ6-$4"NBLJOHJUUIFåSTUHMPCBMGVTF
TUBOEBSE
Applications
t 1PXFSTVQQMZ
t -JHIUJOHTZTUFN
t 8IJUFHPPET
t *OEVTUSJBMFRVJQNFOU
t .FEJDBMFRVJQNFOU
Notes:
- l2t calculated at 8ms.
- Resistance is measured at 10% of rated current, 25ºC
- For information and availability of additional ratings please contact Littelfuse
Revised: September 11, 2009
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
78 © 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Surface Mount Fuses
464 Series
NANO2® > 250V vvUMF > Fast-Acting > 464 Series
Please refer to www.littelfuse.com/series/464.html for current information.
Average Time Current Curves
100
100
10
1
0.1
0.01
0.001
110 1000
0.1
1.00 A
1.25 A
1.60 A
2.00 A
2.50 A
3.15 A
TIME IN SECONDS
CURRENT IN AMPERES
4.00 A
5.00 A
6.30 A
.50 A
.80 A
Reow Condition 1Co'SFFBTTFNCMZ
Pre Heat
- Temperature Min (Ts(min))¡$
- Temperature Max (Ts(max))¡$
- Time (Min to Max) (ts)oTFDT
Average ramp up rate (Liquidus Temp
(TL) to peak ¡$TFDPOENBY
TS(max) to TL - Ramp-up Rate ¡$TFDPOENBY
Reow - Temperature (TL) (Liquidus) ¡$
- Temperature (tL)oTFDPOET
Peak Temperature (TP)¡$
Time within 5°C of actual peak
Temperature (tp)oTFDPOET
Ramp-down Rate ¡$TFDPOENBY
Time 25°C to peak Temperature (TP)NJOVUFTNBY
Do not exceed ¡$
Soldering Parameters
Temperature Rerating Curve
Wave Soldering Parameters
¡$1FBL
5FNQFSBUVSF
TFDPOETNBY
/PUF
 %FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS
DPOUJOVPVTPQFSBUJPO
Time
Temperature
TP
TL
TS(max)
TS(min)
25
tP
tL
tS
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
TL to TP
79
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Surface Mount Fuses
NANO2® > 250V UMF > Fast-Acting > 464 Series
464 Series
Please refer to www.littelfuse.com/series/464.html for current information.
464 Series
Materials #PEZ$FSBNJD
5FSNJOBUJPOT4JMWFSQMBUFE$BQT
Product Marking #SBOE"NQFSF3BUJOH7PMUBHF3BUJOH
6.'-PHP
Operating
Temperature ¡$UP¡$
Moisture Sensitivity
Level -FWFM+45%$
Solderability *&$
Insulation
Resistance (after
Opening)
*&$.PINNJO!7%$
Thermal Shock
.*-45%.FUIPE5FTU
$POEJUJPO#DZDMFT¡$
¡$
Mechanical Shock .*-45%.FUIPE5FTU
$POEJUJPO"
Vibration .*-45%.FUIPE)[
Moisture Resistance .*-45%.FUIPEDZDMFT
Salt Spray .*-45%.FUIPE5FTU
$POEJUJPO#IST
Resistance to Soldering
Heat *&$
Product Characteristics
Dimensions
Packaging
Part Numbering System
Packaging Option Packaging Specication Quantity Quantity &
Packaging Code
NN5BQFBOE3FFM &*"34*&$QBSU  %3
0464 001. D R
SERIES
AMP Code*
QUANTITY Code
PACKAGING Code
3FGFSUP&MFDUSJDBM
$IBSBDUFSJTUJDTUBCMF
%QDT
35BQFBOE3FFM
*Example:
BNQQSPEVDUJT02.5 %3
BNQQSPEVDUTIPXOBCPWF
REFLOW SOLDER
F
2.8
(.11")
12.1
(.475")
4.5
(.177")
6.7
(.264")
6.8
(.264")
WAVE SOLDER
3.5
(.14")
AC250V
F500mAL
6.9
(.27")
5.6
(.22")
5.6
(.22")
4.5
(.177")
Height
END CAP
TOP VIEW
Recommended pad layout
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
80 © 2009 Littelfuse, Inc.
Specications are subject to change without notice.