CNCHIPDEPOT Original Part
MMBT4403
MMBT4403 PNP BJT transistor with 40V VCEO, 600mA collector current, 200MHz fT and SOT-23 package.
Transistor PolarityPNP
Collector-Emitter Voltage (VCEO)40 V
Collector Current (IC)600 mA
DC Current Gain (hFE)100 Min @ IC = -150 mA, VCE = -2 V
Power Dissipation (PD)300 mW
PackageSOT-23
Product Overview
The MMBT4403 is a PNP 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 minimum DC current gain of 100 at 150mA collector current. Its moderate current capability and relatively high transition frequency make it suitable for discrete driver, amplifier, and switching stages.
Packaged in a compact SOT-23 surface-mount package, the MMBT4403 is well suited to space-constrained PCB designs. It can be used in PNP high-side switching, complementary transistor stages, signal amplification, and low-voltage load-control circuits.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | MMBT4403 |
| Brand | CNCHIPDEPOT |
| Package | SOT-23 |
| Product Type | BJT |
| Transistor Polarity | PNP |
| Collector-Emitter Voltage (VCEO) | 40 V |
| Collector Current (IC) | 600 mA |
| DC Current Gain (hFE) | 100 Min @ IC = -150 mA, VCE = -2 V |
| Power Dissipation (PD) | 300 mW |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 0.4 V Max (Magnitude) @ IC = -150 mA, IB = -15 mA |
| Transition Frequency (fT) | 200 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 |
|---|---|---|---|
| ON Semiconductor | 2N4403 | Direct Replacement | Same electrical characteristics and package options. |
| Rohm Semiconductor | 2SA1015 | Possible Replacement | Check maximum collector current and voltage parameters. |
| STMicroelectronics | BC557 | Functional Alternative | PNP transistor with similar voltage and current ratings, check package. |
| Texas Instruments | PN2222A | Complementary PNP | Verify polarity and pin configuration for circuit compatibility. |
Datasheet
Download the datasheet or contact us for additional technical information.
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Typical Applications
- PNP high-side switching circuits
- General-purpose signal amplification
- Complementary NPN/PNP driver stages
- LED and indicator control circuits
- Low-voltage load switching
- 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.