Alternatives to onsemi 2N3904G
onsemi 2N3904G and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 2N3904Gonsemi | 2N3904BUonsemi | 2N3904 PBFREECentral Semiconductor Corp | +3more | |
|---|---|---|---|---|
| FFF Compatibility | Same TO-92-3 package and standard Pin 1: Emitter, Pin 2: Base, Pin 3: Collector pinout.Standard TO-92-3 bulk package style with straight leads matching the original part dimensions.Exact electrical equivalence with NPN topology, 40V VCEO, 200mA IC, and 625mW power dissipation. | Matches the TO-92 package configuration with Pin 1: Emitter, Pin 2: Base, Pin 3: Collector assignment.Matches the standard straight-lead TO-92-3 package dimensions.Fully identical electrical parameters including 40V maximum VCEO and 200mA continuous collector current. | ||
 AI Summary | 2N3904G by onsemi: Bipolar (BJT) Transistor NPN 40 V 200 mA 300MHz 625 mW Through Hole TO-92 (TO-226). | The 2N3904BU is an active, direct drop-in replacement from the original manufacturer (onsemi). It features the identical TO-92 bulk package with straight leads and identical electrical characteristics.
| Central Semiconductor's 2N3904 PBFREE is a reliable, active second-source option offering complete mechanical and electrical compatibility. It serves as an excellent drop-in replacement with standard straight TO-92 leads.
| |
| Lifecycle Status | Obsolete | Active | Active | |
| Market Availability | Discontinued | In stock | In stock | |
| REACH | REACH | REACH | REACH | |
| RoHS | RoHS | RoHS | RoHS | |
| Description | Bipolar (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-92-3 | Bipolar (BJT) Transistor NPN 40 V 300MHz Through Hole TO-92-3 | |
| Manufacturer | onsemi | onsemi | Central Semiconductor Corp | |
| Type | Transistors | Transistors | Transistors | |
| Datasheet | Open | Open | Open | |
| Lead Time | 6 weeks | 34 weeks | 12 weeks | |
| Country of Origin | TH | - | - | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.21.0075 | - | - | |
| Moisture Sensitivity Level | 1 (Unlimited) | - | - | |
| Power - Max | 625 mW | - | - | |
| Mounting Type | Through Hole | - | - | |
| Package / Case | TO-226-3, TO-92-3 Long Body | - | - | |
| Transistor Type | NPN | - | - | |
| Operating Temperature | -55°C ~ 150°C (TJ) | - | - | |
| Frequency - Transition | 300MHz | - | - | |
| Supplier Device Package | TO-92 (TO-226) | - | - | |
| Vce Saturation (Max) @ Ib, Ic | 300mV @ 5mA, 50mA | - | - |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 2N3904onsemi | Non-stock | Obsolete | 5Alternatives availableSee Alternatives |
| 2N3906onsemi | In stock | Obsolete | 6Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi 2N3904G 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.
The closest qualified second sources for the onsemi 2N3904G are the 2N3904BU (onsemi) and the 2N3904 PBFREE (Central Semiconductor Corp), out of 5 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Not always. The alternatives to the 2N3904G are matched on function but can differ in package, pinout or a key parameter, so review the fit/form/function notes in the table and the datasheet before designing one in.
The 2N3904G (onsemi) is a part in the Transistors category. This page lists qualified, cross-referenced replacements for it with a side-by-side comparison.
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