Rohm Semiconductor
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MMST3906T146
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MMST3906T146

Product Overview

  • Category: Transistor
  • Use: Amplification and switching in electronic circuits
  • Characteristics: High voltage, low power consumption
  • Package: SOT-23
  • Essence: NPN bipolar junction transistor
  • Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

  • Collector-Base Voltage (VCBO): 40V
  • Collector-Emitter Voltage (VCEO): 40V
  • Emitter-Base Voltage (VEBO): 5V
  • Collector Current (IC): 200mA
  • Power Dissipation (PD): 225mW
  • Transition Frequency (fT): 250MHz
  • Operating Temperature Range: -55°C to 150°C

Detailed Pin Configuration

  1. Collector (C)
  2. Base (B)
  3. Emitter (E)

Functional Features

  • High voltage capability
  • Low leakage current
  • Fast switching speed
  • Small package size

Advantages and Disadvantages

Advantages

  • High voltage rating
  • Low power consumption
  • Small form factor

Disadvantages

  • Limited collector current compared to other transistors
  • Moderate transition frequency

Working Principles

The MMST3906T146 is an NPN bipolar junction transistor that operates by controlling the flow of current between its collector and emitter terminals using a small current at the base terminal.

Detailed Application Field Plans

  • Audio amplifiers
  • Signal amplification in electronic circuits
  • Switching applications in low-power devices

Detailed and Complete Alternative Models

  • BC337
  • 2N3904
  • 2N4401
  • BC546

This comprehensive entry provides detailed information about the MMST3906T146 transistor, including its specifications, pin configuration, functional features, advantages, disadvantages, working principles, application field plans, and alternative models.

Listen Sie 10 häufige Fragen und Antworten im Zusammenhang mit der Anwendung von MMST3906T146 in technischen Lösungen auf

  1. What is MMST3906T146?

    • MMST3906T146 is a PNP general-purpose transistor commonly used in electronic circuits for amplification and switching applications.

  2. What are the typical applications of MMST3906T146?

    • MMST3906T146 is commonly used in audio amplifiers, signal processing circuits, and voltage regulation circuits.

  3. What are the key electrical characteristics of MMST3906T146?

    • The key electrical characteristics include a maximum collector current of 200mA, a maximum collector-emitter voltage of 40V, and a DC current gain (hFE) ranging from 100 to 250.

  4. How do I properly bias MMST3906T146 in a circuit?

    • Proper biasing involves setting the base current to ensure the transistor operates within its linear region for amplification or in the saturation region for switching applications.

  5. Can MMST3906T146 be used in high-frequency applications?

    • While MMST3906T146 can be used in moderate frequency applications, it may not be suitable for high-frequency designs due to its transition frequency and capacitance characteristics.

  6. What are the thermal considerations when using MMST3906T146 in a circuit?

    • It's important to consider the power dissipation and thermal resistance of the transistor to prevent overheating and ensure reliable operation.

  7. Are there any recommended alternative transistors to MMST3906T146?

    • Some alternative transistors with similar characteristics include 2N3906, BC557, and S8550, but it's important to check the datasheets and specifications for compatibility.

  8. How do I calculate the biasing resistors for MMST3906T146 in a specific circuit?

    • The biasing resistors can be calculated using the desired operating point, the transistor's hFE, and the supply voltage, following standard transistor biasing equations.

  9. What are the typical failure modes of MMST3906T146?

    • Common failure modes include thermal runaway due to excessive heat, overvoltage breakdown, and current overstress leading to permanent damage.

  10. Can MMST3906T146 be used in automotive or industrial applications?

    • Yes, MMST3906T146 can be used in automotive and industrial applications, but it's important to ensure that it meets the required specifications and environmental conditions for these applications.