CNCHIPDEPOT Original Part
2SA812
2SA812 PNP BJT transistor with 50V VCEO, 100mA collector current, 200mW power and 180MHz gain bandwidth.
Transistor PolarityPNP
Collector-Emitter Voltage (VCEO)50 V
Collector Current (IC)100 mA
DC Current Gain (hFE)90–600 @ IC = 1 mA, VCE = -6 V
Power Dissipation (PD)200 mW
PackageSOT-23
Product Overview
The 2SA812 is a PNP silicon epitaxial bipolar junction transistor designed for general-purpose small-signal amplification and switching. It features a 50V collector-emitter voltage rating, 100mA maximum collector current, and a typical DC current gain of 200 at IC = 1mA. Its relatively high voltage capability and broad hFE range support analog signal and low-current control circuits.
With a mini-mold surface-mount package, the 2SA812 is suitable for compact PCB designs requiring PNP signal amplification, switching, and complementary transistor stages. It is complementary to the 2SC1623 and is available in multiple gain classifications for more specific circuit requirements.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | 2SA812 |
| Brand | CNCHIPDEPOT |
| Package | SOT-23 |
| Product Type | BJT |
| Transistor Polarity | PNP |
| Collector-Emitter Voltage (VCEO) | 50 V |
| Collector Current (IC) | 100 mA |
| DC Current Gain (hFE) | 90–600, 200 Typ @ IC = 1 mA, VCE = -6 V |
| Power Dissipation (PD) | 200 mW @ TA = 25°C |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.3 V Max (Magnitude) @ IC = -100 mA, IB = -10 mA |
| Transition Frequency (fT) | 180 MHz Typ @ VCE = -6 V |
| Collector-Base Voltage (VCBO) | 60 V |
| Emitter-Base Voltage (VEBO) | 5 V |
| Junction Temperature (TJ) | 150°C Max |
| Storage Temperature | -55°C to +150°C |
| Mounting Type | Surface Mount |
| Collector Cutoff Current (ICBO) | 0.1 µA Max (Magnitude) @ VCB = -60 V |
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 |
|---|---|---|---|
| ON Semiconductor | 2SA1015 | Possible Replacement | Verify package type and pin configuration. |
| Rohm Semiconductor | 2SA733 | Cross Reference | Confirm hFE and power dissipation specs. |
| Toshiba | 2SA812 | Original Manufacturer | Same MPN from the original brand. |
| NXP Semiconductors | BC639 | Functional Equivalent | Check voltage and current ratings for compatibility. |
Datasheet
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Typical Applications
- General-purpose PNP signal amplification
- Low-current transistor switching circuits
- Complementary PNP/NPN amplifier stages
- Analog signal conditioning circuits
- Voltage level-shifting stages
- Compact surface-mount control 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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SMT Assembly Workshop
SMT production and assembly capabilities supporting electronic component and PCB-related manufacturing requirements.
Semiconductor Production
Controlled production environments supporting semiconductor and electronic component manufacturing processes.
Component Testing Equipment
Electrical testing and verification equipment used to support performance checks and product consistency.
Quality Inspection Lab
Quality inspection processes help verify component condition, specifications and production consistency before shipment.