CNCHIPDEPOT Original Part
MMUN2211
MMUN2211 NPN pre-biased digital transistor with 50V VCEO, 100mA collector current, 13kΩ input resistor and SOT-23 package.
Transistor PolarityNPN
Collector-Emitter Voltage (VCEO)50 V
Collector Current (IC)100 mA
Input Resistor (R1)13 kΩ
Resistor Ratio (R1/R2)1.2
PackageSOT-23
Product Overview
The MMUN2211 is an NPN pre-biased digital transistor designed to simplify switching and interface circuits by integrating the required bias resistor network into a single device. It features a 50V collector-emitter voltage rating, 100mA collector current, 13kΩ input resistance, and a resistor ratio of 1.2. The integrated resistor configuration helps reduce external component count and PCB space compared with a conventional discrete BJT bias circuit.
Packaged in a compact SOT-23 surface-mount package, the MMUN2211 is suitable for logic-controlled switching, digital interfaces, load drivers, and compact control circuits where simplified transistor biasing is beneficial.
Specifications
Key electrical, package, and sourcing parameters for quick engineering review.
| Part Number | MMUN2211 |
| Brand | CNCHIPDEPOT |
| Package | SOT-23 |
| Product Type | Digital Transistor |
| Transistor Configuration | NPN Pre-Biased |
| Transistor Polarity | NPN |
| Collector-Emitter Voltage (VCEO) | 50 V |
| Collector Current (IC) | 100 mA |
| Input Resistor (R1) | 13 kΩ |
| Resistor Ratio (R1/R2) | 1.2 |
| DC Current Gain (hFE) | 35 |
| Collector-Emitter Saturation Voltage (VCE(sat)) | 250 mV |
| Output On Voltage (VO(on)) | 200 mV |
| Collector Cutoff Current | 100 nA |
| Power Dissipation (PD) | 200 mW |
| Operating Temperature | -65°C to +150°C |
| Mounting Type | Surface Mount |
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 | Possible Replacement | Verify pin configuration and package type. |
| Toshiba | 2SC4672 | Cross Reference | Confirm hFE range and maximum power dissipation. |
| NXP Semiconductors | BC847B | Functional Alternative | Check voltage and current ratings for specific applications. |
| ON Semiconductor | MMBT2211 | Direct Replacement | Same electrical characteristics and package. |
Datasheet
Download the datasheet or contact us for additional technical information.
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Typical Applications
- Logic-controlled switching circuits
- Digital signal interface circuits
- LED and indicator driver circuits
- Low-current load control circuits
- Microcontroller output driver stages
- Compact pre-biased transistor 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
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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.