All Alternatives

Alternatives to onsemi 1N757A

onsemi 1N757A and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

1N757A compared against its qualified second sources
1N757Aonsemi1N757A TR PBFREECentral Semiconductor Corp1N757A-1Microchip Technology+4more
FFF CompatibilityStandard DO-35 axial package with the exact same 2-pin axial footprint.Identical physical dimensions and mounting style (through-hole axial).Exact functional equivalent with identical electrical characteristics.Standard DO-204AH (DO-35) axial package.Standard axial package dimensioning and mounting style.Matches all electrical requirements including 9.1 V zener voltage, 500 mW power rating, and 10 Ohm impedance.
AI Summary

1N757A by onsemi: Zener Diode 9.1 V 500 mW ±5% Through Hole DO-35.

This is an active, modern production of the classic 1N757A Zener diode, offering a direct drop-in replacement with identical electrical and mechanical ratings.

  • Direct mechanical and electrical replacement
  • Meets exact 9.1 V, 500 mW, and 10 Ohm impedance specs
  • Maintains same -65°C to 200°C operating temperature range

Microchip's active military-grade equivalent provides a highly reliable drop-in alternative with matching performance metrics.

  • High-reliability construction by a tier-1 manufacturer
  • Exact electrical match with same 10 Ohm impedance and 100 nA leakage
  • Active lifecycle status
  • Slightly lower maximum operating temperature (175°C vs 200°C)
Lifecycle StatusObsoleteActiveActive
Market AvailabilityDiscontinuedNon-stockIn stock
REACHREACHREACHREACH
RoHSRoHSRoHSRoHS
DescriptionZener Diode 9.1 V 500 mW ±5% Through Hole DO-35Zener Diode 9.1 V 500 mW ±5% Through Hole DO-35Zener Diode 9.1 V 500 mW ±5% Through Hole DO-204AH (DO-35)
ManufactureronsemiCentral Semiconductor CorpMicrochip Technology
TypeDiodesDiodesDiodes
DatasheetOpenOpenOpen
Lead TimeUnknown99 weeks20 weeks
Country of Origin---
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8541.10.0050--
Moisture Sensitivity Level1 (Unlimited)--
Tolerance±5%--
Power - Max500 mW--
Mounting TypeThrough Hole--
Package / CaseDO-204AH, DO-35, Axial--
Impedance (Max) (Zzt)10 Ohms--
Operating Temperature-65°C ~ 200°C--
Supplier Device PackageDO-35--
Voltage - Zener (Nom) (Vz)9.1 V--

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Related parts

PartMarket availabilityLifecycleAlternatives available
1N752AonsemiDiscontinuedObsolete3Alternatives availableSee Alternatives

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Frequently asked questions

Yes. The onsemi 1N757A 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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