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PZTA42T1 from ON,ON Semiconductor

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PZTA42T1

Manufacturer: ON, MOTOROLA

HIGH VOLTAGE TRANSISTOR SURFACE MOUNT

Partnumber Manufacturer Quantity Availability
PZTA42T1 ON, MOTOROLA 10762 In Stock

Description and Introduction

HIGH VOLTAGE TRANSISTOR SURFACE MOUNT # Introduction to the PZTA42T1 Transistor  

The PZTA42T1 is a high-performance NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. This surface-mount device offers reliable performance in a compact SOT-223 package, making it suitable for space-constrained designs.  

With a collector-emitter voltage (VCEO) rating of 300V and a continuous collector current (IC) of 500mA, the PZTA42T1 is well-suited for medium-power applications. Its high current gain (hFE) ensures efficient signal amplification, while its low saturation voltage enhances switching efficiency.  

Key features of the PZTA42T1 include:  
- **High Voltage Capability** – Supports up to 300V, making it ideal for power supply and voltage regulation circuits.  
- **Fast Switching Speed** – Suitable for pulse-width modulation (PWM) and other high-frequency applications.  
- **Thermal Stability** – Designed to operate reliably across a wide temperature range.  

Common applications include audio amplifiers, relay drivers, LED drivers, and DC-DC converters. Engineers often choose this transistor for its balance of performance, durability, and cost-effectiveness.  

When integrating the PZTA42T1 into a design, proper thermal management and adherence to recommended operating conditions are essential to ensure optimal performance and longevity. Its robust construction and industry-standard packaging make it a versatile choice for both consumer and industrial electronics.  

For detailed specifications, always refer to the manufacturer’s datasheet to confirm electrical characteristics and application guidelines.

Application Scenarios & Design Considerations

HIGH VOLTAGE TRANSISTOR SURFACE MOUNT

Alternative Part Number

  • MMBTA42LT1G --: Same NPN high-voltage transistor family (300 V, 500 mA) in SOT-23, direct electrical and footprint replacement with similar gain characteristics.
  • FMMTA42TA --: NPN 300 V, 500 mA transistor in SOT-23 with comparable Vceo and hFE, pin-compatible drop-in alternative from a different series.
  • PMBTA42,215 --: 300 V NPN high-voltage transistor in SOT-23 package, functionally equivalent and widely available as a second-source option.
  • MMBTA42LT1G --: NPN high-voltage transistor in SOT-23 with similar 300V rating and current gain, direct functional equivalent from the successor of Motorola's discrete business.
  • FMMT458TA --: SOT-23 NPN high-voltage transistor rated around 400V, suitable replacement for PZTA42T1 in switching and amplification applications.
  • BCX70H --: SOT-23 NPN transistor with high voltage capability and low current, commonly used as an alternative in similar small-signal high-voltage circuits.

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