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ZTX851 from ZETEX

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ZTX851

Manufacturer: ZETEX

NPN SILICON PLANAR MEDIUM POWER HIGH CURRENT TRANSISTOR
Partnumber Manufacturer Quantity Availability
ZTX851 ZETEX 1170 In Stock

Description and Introduction

NPN SILICON PLANAR MEDIUM POWER HIGH CURRENT TRANSISTOR Here are the factual details about part ZTX851 from Ic-phoenix technical data files:  

### **Manufacturer:**  
- **ZTX851** is manufactured by **Zetex Semiconductors** (now part of **Diodes Incorporated**).  

### **Specifications:**  
- **Transistor Type:** NPN Bipolar Junction Transistor (BJT)  
- **Package:** TO-92 (through-hole)  
- **Maximum Collector-Base Voltage (VCB):** 60V  
- **Maximum Collector-Emitter Voltage (VCE):** 50V  
- **Maximum Emitter-Base Voltage (VEB):** 5V  
- **Continuous Collector Current (IC):** 500mA  
- **Total Power Dissipation (Ptot):** 1W  
- **DC Current Gain (hFE):** 100–300 (typical at IC = 10mA)  
- **Transition Frequency (fT):** 175MHz (typical)  
- **Operating Temperature Range:** -55°C to +150°C  

### **Descriptions and Features:**  
- Designed for **high-speed switching** and **amplification** applications.  
- **Low saturation voltage**, making it suitable for switching circuits.  
- **High current gain (hFE)** for improved signal amplification.  
- **Low noise performance**, useful in audio and RF applications.  
- Commonly used in **driver circuits, inverters, and general-purpose amplification**.  

Let me know if you need further details.

Application Scenarios & Design Considerations

NPN SILICON PLANAR MEDIUM POWER HIGH CURRENT TRANSISTOR

Alternative Part Number

  • 2N4401 --: Widely available NPN general-purpose transistor with similar low-power switching characteristics and TO-92 package, suitable for many circuits using the ZTX851.
  • BC337 --: Popular NPN transistor with comparable current and voltage ratings in a TO-92 package, commonly used as a drop-in substitute in general switching and amplification.
  • PN2222A --: Standard NPN switching transistor with similar gain and current capability, easily sourced and often interchangeable in non-critical designs.
  • 2N2222A --: Widely available general-purpose NPN transistor with similar current and voltage ratings, suitable for many low-frequency switching and amplifier applications.
  • 2N3904 --: Popular general-purpose NPN transistor with similar small-signal and switching performance, though with lower current rating than the original.

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