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ZTX957 from ZETEX

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ZTX957

Manufacturer: ZETEX, ZTEX

PNP SILICON PLANAR MEDIUM POWER HIGH CURRENT TRANSISTOR

Partnumber Manufacturer Quantity Availability
ZTX957 ZETEX, ZTEX 2215 In Stock

Description and Introduction

PNP SILICON PLANAR MEDIUM POWER HIGH CURRENT TRANSISTOR Here are the factual details about part ZTX957 from manufacturer ZETEX:  

### **Specifications:**  
- **Transistor Type:** NPN Bipolar Junction Transistor (BJT)  
- **Collector-Emitter Voltage (VCEO):** 400V  
- **Collector-Base Voltage (VCBO):** 400V  
- **Emitter-Base Voltage (VEBO):** 5V  
- **Collector Current (IC):** 1A (Continuous)  
- **Power Dissipation (Ptot):** 1W  
- **DC Current Gain (hFE):** 30 to 240 (at IC = 100mA, VCE = 5V)  
- **Transition Frequency (fT):** 50MHz  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package Type:** TO-92  

### **Descriptions and Features:**  
- High-voltage NPN transistor designed for switching and amplification applications.  
- Suitable for use in power supplies, inverters, and other high-voltage circuits.  
- Low saturation voltage for improved efficiency.  
- High current gain with a wide range (30–240).  
- Lead-free and RoHS compliant.  

For further technical details, refer to the official ZETEX datasheet.

Application Scenarios & Design Considerations

PNP SILICON PLANAR MEDIUM POWER HIGH CURRENT TRANSISTOR

Alternative Part Number

  • 2N5551 --: Widely available high-voltage NPN transistor in TO-92, similar current and voltage ratings, good general-purpose substitute.
  • MPSA42 --: High-voltage NPN in TO-92 with comparable gain and switching behavior, suitable for similar amplifier and switching circuits.
  • BC337 --: Common low-power NPN transistor in TO-92 with adequate current rating, usable where the ZTX957's higher voltage margin is not critical.
  • MPSA92 --: High-voltage PNP transistor with similar 300V VCEO rating and low current, commonly used as a direct substitute for the ZTX957 in high-voltage switching and amplifier circuits.
  • KSP92 --: PNP high-voltage transistor rated around 300V, offering comparable gain and current handling, suitable replacement for ZTX957 in many applications.
  • BF493 --: High-voltage PNP transistor with similar voltage and current specifications, usable as an alternative where the ZTX957 is specified for general high-voltage amplification.

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