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HMBT3904

Manufacturer: 华昕

Sincerity Mocroelectronics - NPN EPITAXIAL PLANAR TRANSISTOR

Partnumber Manufacturer Quantity Availability
HMBT3904 华昕 12220 In Stock

Description and Introduction

Sincerity Mocroelectronics - NPN EPITAXIAL PLANAR TRANSISTOR The HMBT3904 is a general-purpose NPN bipolar junction transistor (BJT) commonly used in amplification and switching applications. Below are its key specifications:  

- **Transistor Type:** NPN  
- **Maximum Collector-Emitter Voltage (VCE):** 40V  
- **Maximum Collector-Base Voltage (VCB):** 60V  
- **Maximum Emitter-Base Voltage (VEB):** 6V  
- **Continuous Collector Current (IC):** 200mA  
- **Total Power Dissipation (Ptot):** 625mW  
- **DC Current Gain (hFE):** 100–300 (typically measured at IC = 10mA, VCE = 1V)  
- **Transition Frequency (fT):** 300MHz  
- **Operating Temperature Range:** -55°C to +150°C  
- **Package Type:** SOT-23 (common surface-mount package)  

These specifications are standard for the HMBT3904 and may vary slightly depending on the manufacturer.

Application Scenarios & Design Considerations

Sincerity Mocroelectronics - NPN EPITAXIAL PLANAR TRANSISTOR

Alternative Part Number

  • MMBT3904 --: Industry-standard NPN small-signal transistor in SOT-23 with nearly identical Vceo, Ic, and hFE specs; widely available and pin-compatible.
  • 2N3904 --: Classic through-hole NPN transistor with the same 40V/200mA ratings and similar gain; suitable if board space allows a TO-92 package.
  • BC847B --: SOT-23 NPN transistor with 45V/100mA ratings and comparable small-signal performance; a common European alternative when slightly lower current is acceptable.
  • PMBT3904 --: SOT-23 NPN switching transistor with matching voltage and current ratings, offering a reliable alternative source from a major manufacturer.

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