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J309 from SI

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J309

Manufacturer: SI

N-Channel JFET High Frequency Amplifier

Partnumber Manufacturer Quantity Availability
J309 SI 4750 In Stock

Description and Introduction

N-Channel JFET High Frequency Amplifier Here are the factual details about part J309 from the manufacturer SI (Siliconix):  

### **Manufacturer:** Siliconix (SI)  
### **Part Number:** J309  

### **Specifications:**  
- **Type:** N-Channel JFET (Junction Field-Effect Transistor)  
- **Maximum Drain-Source Voltage (VDS):** 25V  
- **Maximum Gate-Source Voltage (VGS):** -25V  
- **Maximum Drain Current (ID):** 50mA  
- **Power Dissipation (PD):** 350mW  
- **Gate-Source Cutoff Voltage (VGS(off)):** -0.3V to -3V  
- **Forward Transconductance (gfs):** 10mS (min) at VDS = 15V, ID = 10mA  
- **Input Capacitance (Ciss):** 4.5pF (typical)  
- **Output Capacitance (Coss):** 2.5pF (typical)  
- **Reverse Transfer Capacitance (Crss):** 1.5pF (typical)  

### **Descriptions:**  
- The J309 is a general-purpose N-channel JFET designed for low-noise amplifier applications, switching, and analog signal processing.  
- It features high input impedance and low noise, making it suitable for audio and RF circuits.  

### **Features:**  
- Low noise figure  
- High input impedance  
- Low leakage current  
- Suitable for small-signal amplification  
- TO-92 package (common through-hole mounting)  

For exact performance characteristics, refer to the official Siliconix datasheet.

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