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ZTX451 from ZETEX

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ZTX451

Manufacturer: ZETEX

NPN SILICON PLANAR MEDIUM POWER TRANSISTORS

Partnumber Manufacturer Quantity Availability
ZTX451 ZETEX 183 In Stock

Description and Introduction

NPN SILICON PLANAR MEDIUM POWER TRANSISTORS The part ZTX451 is manufactured by ZETEX (now part of Diodes Incorporated). Below are the factual specifications, descriptions, and features from Ic-phoenix technical data files:  

### **Specifications:**  
- **Transistor Type:** NPN Bipolar Junction Transistor (BJT)  
- **Collector-Emitter Voltage (VCE):** 300V  
- **Collector-Base Voltage (VCB):** 300V  
- **Emitter-Base Voltage (VEB):** 5V  
- **Collector Current (IC):** 100mA  
- **Power Dissipation (Ptot):** 1W  
- **DC Current Gain (hFE):** 40 to 250 (depending on operating conditions)  
- **Transition Frequency (fT):** 50MHz  
- **Package Type:** TO-92  

### **Descriptions & Features:**  
- High-voltage NPN transistor designed for switching and amplification applications.  
- Suitable for use in high-voltage circuits, such as CRT deflection, power supplies, and industrial controls.  
- Low saturation voltage for improved efficiency.  
- High current gain bandwidth product.  
- Lead-free and RoHS compliant.  

For exact performance characteristics, refer to the official datasheet from Diodes Incorporated (formerly ZETEX).

Application Scenarios & Design Considerations

NPN SILICON PLANAR MEDIUM POWER TRANSISTORS

Alternative Part Number

  • 2N3904 --: Widely available general-purpose NPN transistor with similar low-power switching characteristics and pinout, easy drop-in for many ZTX451 applications.
  • BC547 --: Common low-noise NPN transistor with comparable current and voltage ratings, suitable for general amplification and switching circuits.
  • MMBT4401 --: SMD NPN transistor with higher current capability and similar switching behavior, useful when a surface-mount alternative is acceptable.

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