23

Surface Mount Fuses

Revision: September 10, 2008

468 Series

Thin Film > 1206 Size > Slo-Blo

®

> 468 Series

©2008 Littelfuse, Inc.

Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/468.html for current information.

Pb

468 Series Fuse

Description

Agency Approvals

AGENCY

AGENCY FILE NUMBER

AMPERE RANGE

®

E10480

500MA - 3A

®

LR29862

500MA - 3A

Electrical Characteristics for Series

Features

t $PNQMJFTXJUI

FMFDUSPOJDJOEVTUSZ
FOWJSPONFOUBMTUBOEBSET
GPSMFBESFEVDUJPO

t 1SPEVDUJTDPNQBUJCMF

XJUIMFBEGSFFTPMEFST
BOEIJHIFSUFNQFSBUVSF
QSPmMFT

t 5JNFEFMBZGFBUVSF

XJUITUBOETIJHIJOSVTI
DVSSFOUTBOEQSFWFOUT
OVJTBODFPQFOJOHT

t 1BDLBHFJTWJTVBMMZ

EJTUJODUGSPNGBTU
BDUJOHWFSTJPOGPSFBTZ
JEFOUJmDBUJPO

t 5PQTJEFNBSLJOHBMMPXT

WJTVBMWFSJmDBUJPOPG
BNQFSBHFSBUJOH

% of Ampere

Rating

Opening Time at 25

O

C

100%

IPVST.JOJNVN

200%

TFD.JOTFD.BY

300%

TFD.JOTFD.BY

800%

TFD.JOTFD.BY

Applications

®

®

Ampere

Rating

(A)

Amp

Code

Max

Voltage

Rating

(V)

Interrupting

Rating

Nominal Cold

Resistance

(Ohms)

Nominal

Melting

I

2

t (A

2

sec)

Nom

Voltage

Drop

(mV)

Nom

Power

Dissipation

(W)

Agency

Approvals

®

®

63

BNQFSFT!

7"$7%$

Y

Y

63

Y

Y

63

Y

Y

63

BNQFSFT!7"$

BNQFSFT!

7%$

Y

Y

63

Y

Y

32

BNQFSFT!

7"$7%$

Y

Y

Electrical Specifications by Item

1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.

5IF4FSJFT5JNF-BH4MP#MP

®

4.'JTBTNBMM

TJ[FUIJOmMNEFWJDFEFTJHOFEGPSTFDPOEBSZQSPUFDUJPO
PGDJSDVJUTVTFEJOTQBDFDPOTUSBJOFEBQQMJDBUJPOTTVDIBT
IBOEIFMEQPSUBCMFFMFDUSPOJDEFWJDFT

5IJTTFSJFTJTMFBEGSFFBOENFFUTUIFSFRVJSFNFOUT
PGUIF3P)4EJSFDUJWF/FX)BMPHFO'SFF4FSJFT
GVTFTBSFBWBJMBCMFoUPPSEFSVTFUIFi)'wTVGmY4FF1BSU
/VNCFSJOHTFDUJPOGPSBEEJUJPOBMJOGPSNBUJPO

t $FMMQIPOFT

t #BUUFSZQBDLT

t %JHJUBMDBNFSBT

t %7%QMBZFST

t )BSEEJTLESJWFT

4FDPOEBSZQSPUFDUJPOGPSTQBDFDPOTUSBJOFEBQQMJDBUJPOT

24

Revision: September 10, 2008

Surface Mount Fuses

468 Series

Thin Film > 1206 Size > Slo-Blo

®

> 468 Series

©2008 Littelfuse, Inc.

Specifications are subject to change without notice.

Please refer to www.littelfuse.com/series/468.html for current information.

Average Time Current Curves

0.001

0.01

0.1

1

10

100

0

0

1

0

1

1

0

Current in Amperes

Tim

e

in Seconds

3A

2A

2.

5A

1A

1.

5A

.5

A

Temperature Rerating Curve

Reflow Condition

1Co'SFFBTTFNCMZ

Pre Heat

- Temperature Min (T

s(min)

)

¡$

- Temperature Max (T

s(max)

)

¡$

- Time (Min to Max) (t

s

)

oTFDT

Average ramp up rate (Liquidus Temp
(T

L

) to peak

¡$TFDPOENBY

T

S(max)

to T

L

- Ramp-up Rate

¡$TFDPOENBY

Reflow

- Temperature (T

L

) (Liquidus)

¡$

- Temperature (t

L

)

oTFDPOET

Peak Temperature (T

P

)

¡$

Time within 5°C of actual peak
Temperature (t

p

)

oTFDPOET

Ramp-down Rate

¡$TFDPOENBY

Time 25°C to peak Temperature (T

P

)

NJOVUFT.BY

Do not exceed

¡$

Soldering Parameters

Wave Soldering

¡$TFDPOETNBY

25

Surface Mount Fuses

Revision: September 10, 2008

468 Series

Thin Film > 1206 Size > Slo-Blo

®

> 468 Series

©2008 Littelfuse, Inc.

Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/468.html for current information.

Materials

Body:&QPYZ4VCTUSBUF
Terminations:5JO
Element Cover Coat:$POGPSNBM$PBUJOH

Operating
Temperature

o

O

$UP

O

$$POTVMUUFNQFSBUVSF

SFSBUJOHDVSWFDIBSU'PSPQFSBUJPOBCPWF
¡$QMFBTFDPOUBDU-JUUFMGVTF

Thermal Shock

8JUITUBOETDZDMFTPGo

O

$UP

O

$

Humidity

.*-45%'.FUIPE#$POEJUJPO%

Vibration

8JUITUBOET)[QFS.*-45%'
.FUIPE"BOE
)[BU(TQFS.*-45%'
.FUIPE%$POEJUJPO%

Insulation Resistance
(After Opening)

(SFBUFSUIBOPINT

Resistance to
Soldering Heat

.*-45%(.FUIPE'
$POEJUJPO%

Product Characteristics

Dimensions

Part Marking System

MARKING CODE VARIES
WITH AMPERAGE RATING
(SEE CHART)

.58

(.023")

Coating

.66

(.026")

2.03

(.080")

2.03

(.080")

WAVE SOLDER

INFARED SOLDER

3.81

(.150")

1.52

(.060")

1.14

(.045")

4.83

(.190")

1.65

(.065")

1.52

(.060")

3.18

(.125")

1.52

(.060")

1.27

(.050")

Part Numbering System

Packaging

Packaging Option

Packaging Specification

Quantity

Quantity &

Packaging Code

5BQF3FFMoNNUBQF

&*"34*&$QBSU

/3

Amp

Code

Marking

Code

TF

TH

TK

TN

TO

TP

0468002.NRHF

SERIES

AMP Code

‘HF’ SUFFIX
HALOGEN FREE ITEM

PACKAGING Code

5IFEPUJTQPJTJUJPOFECFGPSFUIF1BDL
BHJOH4VGmYXJUIXIPMFSBUJOHTBOE
XJUIJOUIFOVNCFSJOHTFRVFODFGPS
GSBDUJPOBMSBUJOHT3FGFSUP"NQ$PEF
DPMVNOJOUIF&MFDUSJDBM4QFDJmDBUJPOT
UBCMF

/35BQFBOE3FFMQDT

Example:
BNQQSPEVDUJT
1.5/3)'BNQ
QSPEVDUTIPXOBCPWF