Alternatives to onsemi MMBT2222ALT1
onsemi MMBT2222ALT1 and its qualified second sources, compared on form/fit/function, stock, lifecycle and price — the same checks Parter runs inside a BOM.
 MMBT2222ALT1onsemi |  MMBT2222ALT1Gonsemi |  MMBT2222A-7-FDiodes Incorporated | +2more | |
|---|---|---|---|---|
| FFF Compatibility | Identical SOT-23 package and 1=Base, 2=Emitter, 3=Collector pinout.Standard SOT-23 package dimensions are identical.Matches all electrical characteristics including 40V VCEO, 600mA IC, and 300MHz transition frequency. | Standard SOT-23-3 package with identical 1=Base, 2=Emitter, 3=Collector pin assignment.Identical package design and footprint.Direct replacement with identical voltage, current, gain, and switching specifications. | ||
 AI Summary | MMBT2222ALT1 by onsemi: Bipolar (BJT) Transistor NPN 40 V 600 mA 300MHz 225 mW Surface Mount SOT-23-3 (TO-236). | This is the direct lead-free (RoHS compliant) equivalent of the obsolete MMBT2222ALT1 from the same manufacturer, offering identical electrical and physical specs.
| An active, industry-standard second-source replacement from Diodes Inc. offering superior maximum power dissipation (310 mW) while maintaining fully compatible electrical parameters.
| |
| 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 600 mA 300MHz 225 mW Surface Mount SOT-23-3 (TO-236) | Bipolar (BJT) Transistor NPN 40 V 600 mA 300MHz 225 mW Surface Mount SOT-23-3 (TO-236) | Bipolar (BJT) Transistor NPN 40 V 600 mA 300MHz 310 mW Surface Mount SOT-23-3 | |
| Manufacturer | onsemi | onsemi | Diodes Incorporated | |
| Type | Transistors | Transistors | Transistors | |
| Datasheet | Open | Open | Open | |
| Lead Time | Unknown | 52 weeks | 44 weeks | |
| Country of Origin | - | CN | CN, JP, GB, TW | |
| Export Control Class Number | EAR99 | EAR99 | EAR99 | |
| HTSUS Code | 8541.21.0075 | 8541.21.0075 | 8541.21.0075 | |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | |
| Power - Max | 225.0mW | 225.0mW | 310.0mW | |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | |
| Package / Case | TO-236-3, SC-59, SOT-23-3 | TO-236-3, SC-59, SOT-23-3 | SOT-23 | |
| Transistor Type | NPN | NPN | PNP | |
| Frequency - Transition | 300.0MHz | 300.0MHz | 200.0MHz |
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Related parts
| Part | Market availability | Lifecycle | Alternatives available |
|---|---|---|---|
 MMBT2222Aonsemi | In stock | Obsolete | 4Alternatives availableSee Alternatives |
| MMBT2907ALT1onsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
 MMBZ5242BLT1onsemi | Discontinued | Obsolete | 6Alternatives availableSee Alternatives |
 MMBT100Aonsemi | Discontinued | Obsolete | 4Alternatives availableSee Alternatives |
| BAV99LT1onsemi | Discontinued | Obsolete | 5Alternatives availableSee Alternatives |
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Frequently asked questions
Yes. The onsemi MMBT2222ALT1 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 MMBT2222ALT1 are the MMBT2222ALT1G (onsemi) and the MMBT2222A-7-F (Diodes Incorporated), out of 4 matched alternatives in total. Each is compared against the original on fit, form and function in the table above.
Yes. The leading alternatives to the MMBT2222ALT1 are fit-, form- and function-compatible — the same package and pinout with matching key electrical specifications — so they drop in without PCB changes. Always confirm the parameters critical to your design against the alternative's datasheet before committing.
The MMBT2222ALT1 (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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