Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
88
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Surface Mount Fuses
461 Series
Surge Resistant > 461 Series TeleLink
®
Fuse
Please refer to www.littelfuse.com/series/461.html for current information.
Materials
Body:$FSBNJD
Terminations:4JMWFSQMBUFE$BQT
Product Marking #SBOE-PHP"NQFSF3BUJOH5
Operating
Temperature
¡$UP¡$
Moisture Sensitivity
Level
-FWFM+45%$
Solderability
*&$¡$JNNFSTJPO
TFDPOET
Resistance to
Dissolution of
Metallization
*1$&*"+45%"5FTU%¡$GPS
TFDPOET
Product Characteristics
Reow Condition 1CoGSFFBTTFNCMZ
Pre Heat
- Temperature Min (T
s(min)
) ¡$
- Temperature Max (T
s(max)
) ¡$
- Time (Min to Max) (t
s
) oTFDPOET
Average Ramp-up Rate (Liquidus Temp
(T
L
) to peak)
¡$TFDPOENBY
T
S(max)
to T
L
- Ramp-up Rate ¡$TFDPOENBY
Reow
- 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 ¡$TFDPOENBY
Time 25°C to peak Temperature (T
P
) NJOVUFTNBY
Do not exceed ¡$
Soldering Parameters
Packaging
Part Numbering System
Packaging Option Packaging Specication Quantity
Quantity &
Packaging Code
NN5BQFBOE3FFM &*"34*&$QBSU ER
Thermal Shock
.*-45%.FUIPE5FTU
$POEJUJPO#¡$UP¡$
NJOVUFT!FBDIFYUSFNF
Mechanical Shock
.*-45%.FUIPE5FTU
$POEJUJPO")BMG4JOF(hT
NTFDTEVSBUJPO
High Frequency
Vibration
.*-45%.FUIPE5FTU
$POEJUJPO%
Moisture Resistance .*-45%.FUIPEDZDMFT
Terminal Strength
#PBSEEFýFDUJPOQFS&*"*4
NNEFýFDUJPOGPSNJOVUF
Terminal Attachment
.*-45%.FUIPE5FTU
$POEJUJPO"MCTBQQMJFEUPFOEDBQT
0461 1.25 E R
SERIES
AMP Code
*
QUANTITY Code
PACKAGING Code
3FGFSUP&MFDUSJDBM
$IBSBDUFSJTUJDTUBCMF
&QDT
35BQFBOE3FFM
*Example:
BNQQSPEVDUJT002.ER
BNQQSPEVDUTIPXOBCPWF
Time
Temperature
T
P
T
L
T
S(max)
T
S(min)
25
t
P
t
L
t
S
time to peak temperature
(t 25ºC to peak)
Ramp-down
Ramp-up
Preheat
Critical Zone
T
L
to T
P
