CNCHIPDEPOT Original Part
MMBT4401
MMBT4401 NPN BJT transistor with 40V VCEO, 600mA collector current, 250MHz fT and SOT-23 package.
Transistor PolarityNPN
Collector-Emitter Voltage (VCEO)40 V
Collector Current (IC)600 mA
DC Current Gain (hFE)100–300 @ IC = 150 mA, VCE = 1 V
Power Dissipation (PD)300 mW
PackageSOT-23
Product Overview
The MMBT4401 is an NPN bipolar junction transistor designed for general-purpose switching and small-signal amplification. It features a 40V collector-emitter voltage rating, 600mA maximum collector current, and a DC current gain range of approximately 100–300 at 150mA collector current. Its 250MHz transition frequency supports fast switching and signal amplification in compact electronic circuits.
Packaged in a SOT-23 surface-mount package, the MMBT4401 is suitable for LED driving, low-voltage load switching, signal amplification, buffering, and discrete transistor interface circuits where moderate current capability and a small PCB footprint are required.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | MMBT4401 |
| Brand | CNCHIPDEPOT |
| Package | SOT-23 |
| Product Type | BJT |
| Transistor Polarity | NPN |
| Collector-Emitter Voltage (VCEO) | 40 V |
| Collector Current (IC) | 600 mA |
| DC Current Gain (hFE) | 100–300 @ IC = 150 mA, VCE = 1 V |
| Power Dissipation (PD) | 300 mW |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.4 V Max @ IC = 150 mA, IB = 15 mA |
| Transition Frequency (fT) | 250 MHz |
| Operating Temperature | -55°C to +150°C (TJ) |
| Mounting Type | Surface Mount |
| Package / Case | TO-236-3 / SC-59 / SOT-23-3 |
| Collector Cutoff Current | 100 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 |
|---|---|---|---|
| Rohm Semiconductor | 2SC1623 | Compatible Alternative | Confirm hFE range and switching characteristics. |
| STMicroelectronics | BC847B | Possible Replacement | Check voltage and current ratings. |
| NXP Semiconductors | BC847B | Cross Reference | Verify package (SOT-23) and pin configuration. |
| ON Semiconductor | MMBT4401 | Direct Replacement | Same MPN, compatible parameters. |
Datasheet
Download the datasheet or contact us for additional technical information.
PDF
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Typical Applications
- General-purpose NPN switching circuits
- LED and indicator driver circuits
- Low-voltage load switching
- Small-signal amplifier stages
- Signal buffer and interface circuits
- 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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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.