CNCHIPDEPOT Original Part
MMBT2222A
MMBT2222A NPN BJT transistor with 40V VCEO, 1A collector current, 350mW power rating and SOT-23-3 package.
Transistor PolarityNPN
Collector-Emitter Voltage (VCEO)40 V
Collector Current (IC)1 A
DC Current Gain (hFE)100 Min @ IC = 150 mA, VCE = 10 V
Power Dissipation (PD)350 mW
PackageSOT-23-3
Product Overview
The MMBT2222A is an NPN bipolar junction transistor (BJT) designed for general-purpose switching and signal amplification. It features a 40V collector-emitter voltage rating, 1A maximum collector current, and 300MHz transition frequency. Its switching characteristics make it suitable for low-voltage driver circuits and discrete signal control applications.
Housed in a compact SOT-23-3 surface-mount package, the MMBT2222A supports space-efficient PCB designs requiring transistor switching or amplification. Typical applications include LED switching, small relay drivers, and logic-controlled output stages. Appropriate base drive and thermal management are essential when operating at higher collector currents.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | MMBT2222A |
| Brand | CNCHIPDEPOT |
| Package | SOT-23-3 |
| Product Type | BJT |
| Transistor Polarity | NPN |
| Collector-Emitter Voltage (VCEO) | 40 V |
| Collector Current (IC) | 1 A |
| DC Current Gain (hFE) | 100 Min @ IC = 150 mA, VCE = 10 V |
| Power Dissipation (PD) | 350 mW |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 1 V Max @ IC = 500 mA, IB = 50 mA |
| Transition Frequency (fT) | 300 MHz |
| Operating Temperature | 150°C Max (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | TO-236-3 / SC-59 |
| Collector Cutoff Current (ICBO) | 10 nA Max |
Cross Reference & Replacement Information
The following part numbers are commonly reviewed for replacement or compatibility matching. Always verify datasheet, package, pinout, and operating conditions before bulk purchase.
| Target Brand | Target MPN | Replace Type | Notes |
|---|---|---|---|
| Fairchild Semiconductor | 2N2222 | Possible Replacement | Older version, check for parameter differences like hFE range. |
| ON Semiconductor | 2N2222A | Direct Replacement | Same electrical characteristics, widely used alternative. |
| Diodes Incorporated | MMBT2222A | Equivalent Part | Same MPN from different manufacturer, verify datasheet. |
| STMicroelectronics | PN2222A | Cross Reference | Similar specifications, check package compatibility. |
Datasheet
Download the datasheet or contact us for additional technical information.
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Typical Applications
- General-purpose transistor switching circuits
- LED indicator and display driver stages
- Small relay switching circuits
- Logic-controlled output interfaces
- Low-voltage signal amplification
- Compact surface-mount driver circuits
Ordering & RFQ Information
- MOQ: Contact sales
- Lead Time: 3–7 working days for stock items
- Packaging: Reel / Tube / Tray depending on package
- Sample Availability: Available on request
- Mass Production Status: 50K+ pcs Stock / Mass Production
FAQ
Can this part replace my current model?
It may be suitable depending on your circuit requirements. Please verify datasheet, package, pinout, and test samples before bulk orders.
Can I request samples?
Yes. Please submit your RFQ with target quantity and application details.
Need this part or a compatible replacement?
Send us your target part number, BOM list, quantity, and technical requirements. CNCHIPDEPOT can help review replacement options and provide RFQ support.
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