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Product Detailed Parameters
- Description：N-CHANNEL MOSFET,SOT-323
- Series：-
- Mfr：MCC (Micro Commercial Components)
- Package：Tape & Reel (TR),Cut Tape (CT)
- FET Type：N-Channel
- Technology：MOSFET (Metal Oxide)
- Drain to Source Voltage (Vdss)：50 V
- Current - Continuous Drain (Id) @ 25°C：370mA
- Drive Voltage (Max Rds On, Min Rds On)：2.5V, 10V
- Rds On (Max) @ Id, Vgs：1.5Ohm @ 300mA, 10V
- Vgs(th) (Max) @ Id：1.5V @ 250µA
- Gate Charge (Qg) (Max) @ Vgs：1.5 nC @ 10 V
- Vgs (Max)：±20V
- Input Capacitance (Ciss) (Max) @ Vds：58 pF @ 30 V
- FET Feature：-
- Power Dissipation (Max)：250mW (Ta)
- Operating Temperature：-55°C ~ 150°C (TJ)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Supplier Device Package：SOT-323
- Package / Case：SC-70, SOT-323
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Overview
The BSS138BKW-TP is an N-channel MOSFET manufactured by Micro Commercial Components (MCC) in a SOT-323 package. It features a maximum drain-source voltage of 50V and a continuous drain current of 0.4A at 25°C, with a pulsed drain current rating of 1.4A. The device exhibits a low on-resistance of 1.5Ω at VGS=10V and ID=0.5A, or 2.3Ω at VGS=4.5V and ID=0.2A. Total power dissipation is rated at 0.37W at 25°C and 0.3W at 70°C, supported by a thermal resistance of 305°C/W junction-to-ambient. Operating temperatures range from -55°C to +150°C.
Feature Summary
- ESD protection up to 2kV via Human Body Model standard
- High-density cell design for minimized on-resistance
- Moisture sensitivity level 1 classification
- Halogen-free green device construction
Applications
- Low-side switching applications
- Power management circuits
- Battery protection systems
Procurement Notes
Verify the component against official MCC datasheets to confirm authenticity. Ensure the ordering suffix matches the required packaging format, such as tape and reel quantities. Purchase only through authorized distributors to guarantee traceability and avoid counterfeit parts. Confirm RoHS compliance status if environmental regulations apply to your specific manufacturing process.
Selection Notes
Select this component when a compact SOT-323 footprint is required for N-channel switching. Consider its 50V breakdown voltage and 0.4A continuous current limits for appropriate load matching. Evaluate the 1.5Ω on-resistance for efficiency requirements under high gate drive conditions. Verify thermal constraints based on the specified junction-to-ambient resistance for your enclosure design.
Part Context
This part belongs to the BSS138 series of small signal N-channel MOSFETs produced by Micro Commercial Components. It utilizes silicon technology optimized for low on-resistance within a miniature surface-mount package. The device is designed for general-purpose switching and amplification tasks where space efficiency and robust ESD performance are critical design factors.
Replacement Considerations
Cross-reference with other BSS138 variants from different manufacturers, ensuring identical pinout compatibility and electrical ratings. Verify that substitute components meet the same SOT-323 mechanical dimensions and thermal characteristics.
