429 Series - 1206 Very Fast-Acting Thin-Film Fuse

Series: 429
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Disclaimer Notice

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

OBSOLETE with the exception of the 7A RoHS device.

The 429 Series Fast-Acting SMF is a small (1206 size) thinfilm 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


Features:

  • RoHS compliant andLead-Free 7A device available-add ‘L’ suffix to part number.
  • Halogen-Free 7Adevice available-add ‘HF’ suffix to the part number
  • For new designs up to 5A please consult the 433 or 466 Series

Access specifications, certifications, check availability and order parts below

Catalog #VDC (V)VAC (V)Nominal Melting I2T (A2sec)Resistance
(Ω)		BodyOpeningOperating TemperatureCompare
429.125
Replaced By: 0466.125 		1251250.00022.3Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429.200
Replaced By: 0466.200 		1251250.00060.938Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429.250
Replaced By: 0466.250 		1251250.0010.625Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429.375
Replaced By: 0466.375 		1251250.00280.375Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429.500
Replaced By: 0466.500 		63630.0060.2405Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429.750
Replaced By: 0466.750 		63630.0170.137Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429001
Replaced By: 0466001. 		63630.0350.0995Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429002
Replaced By: 0466002. 		63630.230.0398Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429003
Replaced By: 0466003. 		32320.70.0262Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429004
Replaced By: 0466004. 		24241.50.0193Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
429005
Replaced By: 0466005. 		24242.70.0138Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
0429007.24244.90.009Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
42901.5
Replaced By: 046601.5 		63630.1250.0625Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
42902.5
Replaced By: 046602.5 		32320.50.0307Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
4291.25
Replaced By: 04661.25 		63630.0650.0747Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
4291.75
Replaced By: 04661.75 		63630.150.05Epoxy SubstrateVery Fast-Acting (FF)-55° to 90°C
Catalog # Certificates
Sorting icon
429004 cRUicon
429005 cRUicon
0429007. cRUicon
To request product environmental information, please complete the Product Environmental Information Request Form.

pdficon Non RoHS Thin Film Fuse Obsoletion

PCN# EFU100-3
pdficon EC611 Circuit Protection for Lithium Ion and Lithium Polymer Rechargeable Battery Applications

This application note summarizes how the increased use of Lithium-Ion and Lithium Polymer battery packs in applications where user safety is critical the implementation of secondary protection circuits will ensure an unsurpassed level of safety with minimal cost impact.
pdficon Fuseology Selection Guide

Littelfuse Fuseology Selection Guide
CSAicon CSA 1422-30 029862

pdficon Electronic Fuse Products Catalog

Littelfuse Electronic Fuse Products Catalog -- Miniature Fuse Products for Overcurrent Protection of Small Electrical and Electrical Applications...
tc-icon 429 Series Time Curve Data

pdficon Fuse 429 Datasheet

The 429 Series Fast-Acting SMF is a small (1206 size) thinfilm device designed for secondary protection of circuits used in space constrained applications such as hand-held portable electronic devices...
uricon UR_QVGQ2_E128662