CNCHIPDEPOT Original Part
MMBT3904
MMBT3904 Transistors in SOT23 package. Contact our team for PDF datasheet.
PackageSOT-23
Transistor TypeNPN Bipolar Transistor
Collector-Emitter Voltage (VCEO)40V
Collector Current (IC)200mA
DC Current Gain (hFE)100-300
Transition Frequency (fT)300MHz
Product Overview
MMBT3904 Transistors in SOT23 package. Contact our team for PDF datasheet.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | MMBT3904 |
| Brand | CNCHIPDEPOT |
| Package | SOT23 |
| Category | Small Signal Bipolar Transistors |
| Type | NPN Bipolar Transistor |
| Configuration | Single |
| Polarity | NPN |
| Package / Case | SOT-23 |
| Mounting Type | Surface Mount |
| Collector-Emitter Voltage (VCEO) | 40V |
| Collector Current (IC) | 200mA |
| Power Dissipation (PD) | 350mW |
| DC Current Gain (hFE) | 100-300 |
| VCE Saturation Voltage | 0.2V |
| Transition Frequency (fT) | 300MHz |
| Operating Temperature | -55°C to 150°C |
| Packaging | Tape & Reel (TR) |
| Part Status | Active |
| Product Type | BJT |
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 |
|---|---|---|---|
| Texas Instruments | 2N3904 | Possible Replacement | Through-hole version, verify package compatibility (TO-92 vs SOT-23). |
| STMicroelectronics | BC847B | Functional Alternative | Similar NPN, check VCEO (45V vs 40V) and hFE range. |
| ON Semiconductor | MMBT3904 | Direct Replacement | Same MPN, widely used general-purpose NPN transistor. |
| Fairchild Semiconductor | MMBT3904 | Cross Reference | Original manufacturer, equivalent electrical characteristics. |
Datasheet
Download the datasheet or contact us for additional technical information.
PDF
Datasheet not uploaded yet
Contact us for technical details and replacement review support.
Contact SalesContact us for technical details and replacement review support.
Typical Applications
- General-purpose switching circuits
- Low-power amplifier circuits
- Signal amplification
- Driver circuits
- Logic level switching
- Relay and LED drivers
- Audio preamplifier stages
- Sensor interface circuits
- Consumer electronic circuits
- Industrial 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.
Submit RFQElectronic Component Manufacturing & Quality Control
As a China electronic component factory , China Chip Depot supports component sourcing, production, testing and quality inspection for global B2B buyers. We also provide Cross Reference Alternative Parts matching services to help engineers and procurement teams identify suitable component alternatives.
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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.
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.