Surface Mount Fuses
Thin Film > 1206 Size > Very Fast-Acting > 429 Series
429 Series Fuse
Description
The 429 Series Fast-Acting SMF is a small (1206 size) thin-
film device designed for secondary protection of circuits
used in space constrained applications such as hand-held
portable electronic devices.
This series is Halogen-Free, Lead-Free and meets the
requirements of the RoHS directive.
Agency Approvals
Agency
Agency File number
e10480
lr29862
Ampere rAnge
7A
7A
• RoHS compliant and
Lead-Free 7A device
available-add ‘L suffix
’
to part number.
• Halogen-Free 7A
device available-add
‘HF’ suffix to the part
number
Applications
•
For new designs up
to 5A please consult
the 433 or 466 Series
Electrical Characteristics for Series
% of Ampere
rating
100%
200%
300%
Opening Time at 25
O
c
4 hours, Minimum
5 sec., Maximum
0.2 sec., Maximum
Secondary protection for space constrained applications
such as:
• Cell phones
• Battery packs
• Digital cameras
• DVD players
• Hard disk drives.
Electrical Specifications by Item
Ampere
rating
(A)
7
.00
Amp
code
007
.
max
Voltage
rating
(V)
24
interrupting
rating
35 amperes
@ voltage, VAC/VDC
nominal cold
resistance
(Ohms)
0.00925
nominal
melting
i
2
t (A
2
sec)
3.6000
Agency
Approvals
x
x
1. Measured at 10% of rated current, 25ºC.
2. Measured at rated voltage.
© 2009 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/429.html for current information.
33
Revised: Jun 16 , 2011
429 Series
429 Series
Features
LITTELFUSE [ LITTELFUSE ]
