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Alternatives to onsemi 1N4734A

onsemi 1N4734A and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

Equivalent and substitute parts for onsemi 1N4734A

1N4734A compared against its qualified second sources
1N4734Aonsemi1N4734Aonsemi1N4734A,113Nexperia USA Inc.+2more
FFF CompatibilityBoth parts share the standard DO-41 (DO-204AL) axial package with identical pin assignments (Pin 1: Cathode indicated by band, Pin 2: Anode).Both devices share the standard axial through-hole format with compatible package length and diameter.Perfectly matches the 5.6 V nominal Zener voltage, 1 W power dissipation, 5 Ohms maximum dynamic impedance, and 5% tolerance.Standard 2-pin axial DO-41 (SOD66) package with identical cathode band placement and pin assignments.Identical through-hole axial form factor and dimensions.Identical 5.6 V nominal Zener voltage, 1 W power dissipation, 5% tolerance, and thermal specifications.
AI Summary

1N4734A by onsemi: Zener Diode 5.6 V 1 W ±5% Through Hole DO-204AL (DO-41).

This is the direct same-family continuous line successor to the obsolete Fairchild part, as onsemi acquired Fairchild. It offers an active lifecycle status with identical electrical, thermal, and physical parameters, making it the most seamless drop-in replacement.

  • Direct continuous product lineage as onsemi acquired Fairchild Semiconductor.
  • Identical 5.6 V Zener voltage and 1 W power rating.
  • Direct physical drop-in in a standard DO-41 axial package.

Nexperia's 1N4734A,113 is an active second-source equivalent of the JEDEC standard 1N4734A. It provides a direct drop-in alternative with zero physical or electrical compromises.

  • Fully active and highly available second-source option from a reputable manufacturer.
  • Identical 5.6 V, 1 W electrical parameters.
  • No PCB layout or physical assembly modification required.
Lifecycle StatusObsoleteObsoleteActive
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Frequently asked questions

Yes. The onsemi 1N4734A is marked obsolete, so the manufacturer has discontinued it and any remaining supply is limited to distributor stock. The qualified second sources on this page are active parts you can design in today.

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