CNCHIPDEPOT Original Part
MPSA44
MPSA44 high-voltage NPN BJT transistor with 400V VCEO, 300mA collector current and SOT-89 package.
Transistor PolarityNPN
Collector-Emitter Voltage (VCEO)400 V
Collector Current (IC)300 mA
DC Current Gain (hFE)50–300 @ IC = 10 mA, VCE = 10 V
PackageSOT-89
Product Overview
The MPSA44 is an NPN silicon bipolar junction transistor designed for high-voltage, low-current switching and amplification. It features a 400V collector-emitter voltage rating and up to 300mA collector current, making it suitable for discrete control, signal amplification, and level-shifting circuits operating at elevated voltages.
Packaged in a SOT-89 surface-mount package, the MPSA44 combines high-voltage capability with a compact PCB footprint. It is suitable for telephone interface circuits, high-voltage switching, discrete amplifier stages, and other low-current control applications requiring surface-mount construction.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | MPSA44 |
| Brand | CNCHIPDEPOT |
| Package | SOT-89 |
| Product Type | BJT |
| Transistor Polarity | NPN |
| Collector-Emitter Voltage (VCEO) | 400 V |
| Collector Current (IC) | 300 mA |
| DC Current Gain (hFE) | 50–300 @ IC = 10 mA, VCE = 10 V |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.75 V Max @ IC = 50 mA, IB = 5 mA |
| Collector-Base Voltage (VCBO) | 400 V |
| Emitter-Base Voltage (VEBO) | 6 V |
| Collector Cutoff Current (ICBO) | 0.1 µA Max @ VCB = 400 V |
| Emitter Cutoff Current (IEBO) | 0.1 µA Max @ VEB = 4 V |
| Junction Temperature (TJ) | 150°C Max |
| Storage Temperature | -55°C to +150°C |
| Mounting Type | Surface Mount |
| Pin Configuration | 1: Base, 2: Collector, 3: Emitter |
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 | 2N3904 | Functional Replacement | Similar NPN BJT characteristics, check voltage and current ratings. |
| Rohm Semiconductor | 2SC1815 | Compatible Substitute | Check frequency response and package compatibility. |
| STMicroelectronics | BC547 | Cross Reference | General purpose NPN transistor, verify package and hFE range. |
| Texas Instruments | PN2222A | Possible Alternative | Confirm maximum collector current and power dissipation. |
Datasheet
Download the datasheet or contact us for additional technical information.
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Typical Applications
- Telephone dialler circuits
- High-voltage NPN switching circuits
- High-voltage signal amplification
- Voltage level-shifting circuits
- Discrete high-voltage control stages
- Surface-mount high-voltage interface 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.