MMBT5401 Transistor 2L PNP 150V 600mA 350MW Surface Mount SOT-23

MMBT5401 Transistor 2L PNP 150V 600mA 350mW (SOT-23) is a compact surface-mount PNP junction transistor designed for switching and amplification in space-constrained electronic circuits. Its high voltage tolerance and moderate current handling make it a versatile choice for general-purpose signal processing, driver stages, and low-power switching applications.

Key Features:

• High Collector-Emitter Voltage: Withstands up to −150 V, suitable for higher-voltage signal stages.
• Moderate Current Capability: Supports continuous collector current of −600 mA.
• Low Power Dissipation: Rated at 350 mW, appropriate for compact SMD designs.
• Fast Switching Speed: Well-suited for driver and control circuits requiring quick response.
• SOT-23 Package: Small outline package for high-density PCB layouts.

Technical Specifications:

• Collector-Emitter Voltage (V_CEO): −150 V
• Collector-Base Voltage (V_CBO): −160 V
• Emitter-Base Voltage (V_EBO): −5 V
• Collector Current (I_C): −600 mA continuous
• Power Dissipation (P_D): 350 mW at 25 °C ambient
• DC Current Gain (h_FE): 40 to 160 (typical, depending on test conditions)
• Transition Frequency (f_T): Around 100 MHz
• Operating Junction Temperature: −55 °C to +150 °C

Mechanical Specifications:

• Package: SOT-23 surface-mount plastic package
• Mounting Type: Reflow soldering compatible, suitable for automated PCB assembly
• Lead Finish: Matte tin-plated leads for reliable solderability
• Encapsulation: Molded epoxy for durability and moisture resistance

Dimensions:

• Package Length: ~2.9 mm
• Package Width: ~1.3 mm
• Package Height: ~1.1 mm
• Lead Pitch: ~0.95 mm

Pinout and Wiring:

• Pin 1: Base (B)
• Pin 2: Emitter (E)
• Pin 3: Collector (C)
• Wiring Note: Use as a low-side driver or amplifier stage. Connect base via current-limiting resistor and ensure collector current stays within limits for safe operation.

Datasheet Reference:

• Datasheet

Applications:

• Signal Amplification: Used in low-power audio and signal gain stages.
• Switching Circuits: Provides reliable operation in low- to medium-current switching.
• Driver Stages: Suitable for driving relays, LEDs, or other small loads.
• Voltage Regulation: Commonly used in feedback and biasing networks in regulators and converters.

Equivalent Models:

• MMBT5551: NPN complement with similar voltage rating
• 2N5401 (through-hole): Equivalent transistor in TO-92 package
• BCX53 Series: Alternative high-voltage PNP transistors in SMD packages

Package Includes:

• 1 x MMBT5401 PNP Transistor (SOT-23)