All Alternatives

Alternatives to onsemi 2N3904

onsemi 2N3904 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.

2N3904 compared against its qualified second sources
2N3904onsemi2N3904BUonsemi2N3904Diotec Semiconductor+3more
FFF CompatibilitySame TO-92 package with standard 1: Emitter, 2: Base, 3: Collector pinout.Identical physical dimensions and mounting style (THT TO-92).Identical electrical specifications across all parameters.Same TO-92 package with standard 1: Emitter, 2: Base, 3: Collector pinout.Matches standard TO-92-3 physical dimensions.All key parameters (voltage, current, power, frequency) are equivalent to the original.
AI Summary

2N3904 by onsemi: Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 625 mW Through Hole TO-92 (TO-226).

This is the active bulk-packaged version of the original onsemi 2N3904, serving as a direct drop-in replacement with identical electrical and physical characteristics.

  • Direct drop-in replacement from the original manufacturer (onsemi).
  • Identical electrical characteristics (40 V, 200 mA, 300 MHz, 625 mW).
  • Same TO-92 through-hole package and pin assignment (Emitter-Base-Collector).

An active second-source 2N3904 in a TO-92 package, offering an exact fit, form, and functional match to ensure seamless continuity in existing designs.

  • Active second-source equivalent in TO-92 packaging.
  • Identical primary ratings (40 V, 200 mA, 625 mW).
  • Standard pinout matching the original part exactly.
Lifecycle StatusObsoleteActiveActive
Market AvailabilityNon-stockIn stockIn stock
REACHUnknownREACHREACH
RoHSRoHSRoHSRoHS
DescriptionBipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 625 mW Through Hole TO-92 (TO-226)Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 625 mW Through Hole TO-92-3Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 625 mW Through Hole TO-92
ManufactureronsemionsemiDiotec Semiconductor
TypeTransistorsTransistorsTransistors
DatasheetOpenOpenOpen
Lead Time15 weeks34 weeks6 weeks
Country of Origin---
Export Control Class NumberEAR99EAR99EAR99
HTSUS Code8541.21.0075--
Moisture Sensitivity Level---
Power - Max625 mW--
Mounting TypeThrough Hole--
Package / CaseTO-226-3, TO-92-3 Long Body--
Transistor TypeNPN--
Operating Temperature-55°C ~ 150°C (TJ)--

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Frequently asked questions

Yes. The onsemi 2N3904 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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