Surface Mount Fuses
Thin Film > 0402 Size > Very Fast-Acting > 435 Series
435 Series Fuse
Description
5IF4FSJFTBSFGBTUBDUJOHTVSGBDFNPVOUUIJOåMN
GVTFT5IFJSVMUSBTNBMMTJ[F TJ[F
NBLFTUIFNJEFBMGPS
TFDPOEBSZQSPUFDUJPOPGDJSDVJUTVTFEJOTQBDFDPOTUSBJOFE
BQQMJDBUJPOTTVDIBTIBOEIFMEQPSUBCMFFMFDUSPOJDEFWJDFT
Features
t "JOUFSSVQUSBUJOHBU
7%$
Agency Approvals
AGENCY
AGENCY FILE NUMBER
AMPERE RANGE
E10480
0.250 - 5.0A
029862_0_000
0.250 - 5.0A
t 4NBMMTJ[FXJUIDVSSFOU
SBUJOHTPGUP
BNQFSFT
t 3P)4DPNQMJBOU
MFBE
GSFFBOEIBMPHFOGSFF
Electrical Characteristics for Series
% of Ampere
Rating
Opening Time at 25OC
t .BYJNVNQSPUFDUJPO
PGTFOTJUJWFDJSDVJUT
BTGVTFTBSFEFTJHOFE
UPPQFODPOTJTUFOUMZ
JOTFDBU
PWFSMPBE
t &OIBODFE#SFBLJOH
$BQBDJUZ
)JHIMU
Applications
4FDPOEBSZQSPUFDUJPOGPSTQBDFDPOTUSBJOFEBQQMJDBUJPOT
TVDIBT
IPVST
.JOJNVN
t $FMMQIPOFT
t %7%QMBZFST
TFD
.BYJNVN
t #BUUFSZQBDLT
t )BSEEJTLESJWFT
TFD
.BYJNVN
t %JHJUBMDBNFSBT
Electrical Specifications by Item
Agency Approvals
Nom
Power
Dissipation
(W)
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
It (A2sec)
Nom
Voltage
Drop
(mV)
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Ampere
Rating
(A)
Amp
Code
Max
Voltage
Rating
(V)
Interrupting
Rating
"!7%$
.FBTVSFEBUPGSBUFEDVSSFOU
$
.FBTVSFEBUSBUFEWPMUBHF
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/435.html for current information.
45
Revised: June 11, 2009
435 Series
435 Series
5IJTTFSJFTJTMFBEGSFFBOENFFUUIFSFRVJSFNFOUTPG
UIF3P)4EJSFDUJWF/FX)BMPHFO'SFF4FSJFTGVTFTBSF
BWBJMBCMFoUPPSEFSVTFUIFi)'wTVGåY4FF1BSU/VNCFSJOH
TFDUJPOGPSBEEJUJPOBMJOGPSNBUJPO
Mount
Fuses
IntroductionSurface
to Circuit
Protection
Thin Film > 0402 Size > Very Fast-ActingTransientology
> 435 Series
.375A
.5A
.75A
1A
1.25A
1.5A
1.75A
2A
2.5A
3A
3.5A
4A
5A
Average Time Current Curves
.25A
Temperature Rerating Curve
100
TIME IN SECONDS
10
1
0.1
0.01
/PUF
%FSBUJOHEFQJDUFEJOUIJTDVSWFJTJOBEEJUJPOUPUIFTUBOEBSEEFSBUJOHPGGPS
DPOUJOVPVTPQFSBUJPO
&YBNQMF
0.001
0.1
'PSDPOUJOVPVTPQFSBUJPOBUEFHSFFTDFMTJVT
UIFGVTFTIPVMECFEFSBUFEBTGPMMPXT
*
*3"5
*3"5
1
10
CURRENT IN AMPERES
100
Soldering Parameters
Reflow Condition
- Temperature Min (Ts(min))
¡$
- Temperature Max (Ts(max))
¡$
- Time (Min to Max) (ts)
oTFDT
Average ramp up rate (Liquidus Temp
(TL) to peak
¡$TFDPOENBY
TS(max) to TL - Ramp-up Rate
¡$TFDPOENBY
Reflow
- Temperature (TL) (Liquidus)
¡$
- Temperature (tL)
oTFDPOET
Peak Temperature (TP)
¡$
Time within 5°C of actual peak
Temperature (tp)
oTFDPOET
Ramp-down Rate
¡$TFDPOENBY
Time 25°C to peak Temperature (TP)
NJOVUFT.BY
Do not exceed
¡$
Wave Soldering
435 Series
tP
TP
Critical Zone
TL to TP
Ramp-up
TL
TS(max)
Temperature
Pre Heat
1Co'SFFBTTFNCMZ
tL
Ramp-down
TS(min)
Preheat
tS
25
time to peak temperature
(t 25ºC to peak)
Time
¡$
TFDPOETNBY
46
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/435.html for current information.
Surface Mount Fuses
Thin Film > 0402 Size > Very Fast-Acting > 435 Series
Product Characteristics
Materials
Body:&QPYZ(MBTT4VCTUSBUF
1BSUTXJUIA)'TVGåY)BMPHFO'SFF&QPYZ(MBTT
Terminations:5JOPWFS/JDLFMPWFS$PQQFS
Device Weight:NH
Terminal
Strength
.*-45%'
.FUIPE"
5FTU$POEJUJPO"
Insulation
Resistance
"GUFS0QFOJOH(SFBUFSUIBO
0INT
Operating
Temperature
o¡$UP¡$
$POTVMUUFNQFSBUVSFSFSBUJOHDVSWFDIBSU
'PSPQFSBUJPOBCPWF¡$QMFBTFDPOUBDU
-JUUFMGVTF
Thermal Shock
8JUITUBOETDZDMFTPGo¡$UP¡$
Vibration
.*-45%'
A
Amp
Code
Marking code varies
with amperage.
Refer to Part Marking
System chart.
.991 +/- .051
(.039" +/- .002")
435 Series
Part Marking System
Dimensions
Marking
Code
.250
.375
+/- .051
B .508
(.020" +/- .002")
.500
.750
001.
.229 +/- .102
(.009" +/- .004")
1.25
+/- .076
C .305
(.012" +/- .003")
01.5
1.75
D .2159 +/- .0889
(.0085" +/- .0035")
Sn
Cu
002.
Reflow solder
recommended
mounting pad
dimensions
02.5
003.
.584
(.023")
03.5
004.
.381
1.55
(.015") (.061")
005.
.558
(.022")
Part Numbering System
0435 002. K R HF
A
B
C
D
JODINJO
JODINBY
NNNJO
NNNBY
SERIES
AMP Code
3FGFSUP"NQ$PEFDPMVNOJOUIF
&MFDUSJDBM4QFDJåDBUJPOTUBCMF
5IFEPUJTQPTJUJPOFEBUUIFFOEPGUIF
OVNCFSTFRVFODFXJUIXIPMFSBUJOHT
BOEXJUIJOGPSGSBDUJPOBMSBUJOHT
Example: BNQQSPEVDUJT
01.5,3)' BNQQSPEVDUTIPXO
QUANTITY Code
,
1JFDFT
PACKAGING Code
35BQFBOE3FFM
HALOGEN FREE ITEM
Packaging
Packaging Option
Packaging Specification
Quantity
Quantity &
Packaging Code
NN5BQFBOE3FFM
&*"34 *&$
QBSU
,3
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/435.html for current information.
47
435 Series
Introduction to Circuit Protection
Transientology
48
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
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