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ZTX458 from ZETEX

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ZTX458

Manufacturer: ZETEX, ZTX

NPN SILICON PLANAR MEDIUM POWER HIGH VOLTAGE TRANSISTOR
Partnumber Manufacturer Quantity Availability
ZTX458 ZETEX, ZTX 20707 In Stock

Description and Introduction

NPN SILICON PLANAR MEDIUM POWER HIGH VOLTAGE TRANSISTOR The ZTX458 is a high-performance NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications.  

### **Specifications:**  
- **Transistor Type:** NPN  
- **Maximum Collector-Base Voltage (VCB):** 40V  
- **Maximum Collector-Emitter Voltage (VCE):** 40V  
- **Maximum Emitter-Base Voltage (VEB):** 5V  
- **Continuous Collector Current (IC):** 500mA  
- **Total Power Dissipation (Ptot):** 625mW  
- **DC Current Gain (hFE):** 100 to 300 (varies with operating conditions)  
- **Transition Frequency (fT):** 150MHz  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions and Features:**  
- **High current gain (hFE)** for improved signal amplification.  
- **Low saturation voltage** for efficient switching applications.  
- **Suitable for general-purpose amplification** in audio and RF circuits.  
- **Designed for medium-power applications** in both linear and switching modes.  
- **Available in TO-92 package** for easy PCB mounting.  
- **RoHS compliant** (lead-free and environmentally friendly).  

The ZTX458 is commonly used in audio amplifiers, signal processing circuits, and electronic switching systems.

Application Scenarios & Design Considerations

NPN SILICON PLANAR MEDIUM POWER HIGH VOLTAGE TRANSISTOR

Alternative Part Number

  • MPSA42 --: High-voltage NPN transistor with similar 300V VCEO rating and low current capability, widely available and commonly used as a ZTX458 substitute.
  • 2N5551 --: High-voltage NPN transistor rated 160V, suitable for many circuits where ZTX458 is used, with good gain and low cost.
  • BF820 --: High-voltage NPN transistor in SOT-23 package, 300V rated, offering a compact surface-mount alternative for ZTX458 applications.
  • KSP42 --: High-voltage NPN transistor in TO-92 package with 300V rating, offering comparable performance and pinout compatibility for general high-voltage switching.

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