The onsemi MMBT4401LT1G is a single NPN silicon bipolar junction transistor designed for general switching, amplification, and driver applications. It features a 40V collector-emitter voltage rating, 600mA continuous collector current, and up to 900mA peak collector current in a compact SOT-23 surface-mount package.
The device also provides a 60V collector-base voltage rating and 6V emitter-base voltage rating. DC current gain is specified at 100 to 300 at IC = 150mA and VCE = 1V, while minimum gain remains 40 at IC = 500mA.
Maximum collector-emitter saturation voltage is 0.4V at 150mA collector current and 15mA base current, increasing to 0.75V maximum at 500mA collector current and 50mA base current.
The MMBT4401LT1G provides a minimum 250MHz current-gain bandwidth product and maximum 6.5pF collector-base capacitance. Specified switching characteristics include 15ns delay, 20ns rise time, 225ns storage time, and 30ns fall time under the datasheet test conditions.
Power dissipation is 225mW on the specified FR-5 board and up to 300mW on the specified alumina substrate. Junction and storage temperatures range from -55°C to +150°C. The exact MMBT4401LT1G is the standard-grade version; the SMMBT4401LT1G is the AEC-Q101/PPAP-capable automotive version. The T1G part is supplied in 3,000-piece tape-and-reel packaging.
Key Features:
- Manufacturer: onsemi
- Part Number: MMBT4401LT1G
- Device Type: NPN Bipolar Transistor
- Configuration: Single
- VCEO: 40V
- VCBO: 60V
- VEBO: 6V
- Continuous Collector Current: 600mA
- Peak Collector Current: 900mA
- DC Current Gain: 100 to 300 at 150mA
- VCE(sat): 0.4V max at 150mA
- VCE(sat): 0.75V max at 500mA
- Transition Frequency: 250MHz minimum
- Collector-Base Capacitance: 6.5pF maximum
- Power Dissipation: 225mW on specified FR-5 PCB
- Junction Temperature: -55°C to +150°C
- Package: SOT-23 / TO-236
- Package Size: Approx. 2.9 × 1.3 × 1.0mm
- Pin Count: 3
- Marking Code: 2X
- Mounting Type: Surface Mount
- Packaging: Tape & Reel
- Reel Quantity: 3,000 pcs
- Qualification: Standard
- Automotive Variant: SMMBT4401LT1G
- Pb-Free / RoHS / Halogen-Free
- Product Status: Active.
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