2N3819 (5 pcs)

The 2N3819 is a classic N-channel junction field-effect transistor (JFET) in a TO-92 package, sold here as a pack of 5. Its very high input impedance makes it a favourite for low-noise preamplifiers, buffer stages, analog switches and constant-current sources, and it is a common part in electronics courses and guitar effects circuits.

2N3819 Specifications

• Type: N-channel JFET
• Package: TO-92, through-hole
• Drain–source and gate–source voltage: 25 V maximum
• Zero-gate drain current (IDSS): 2–20 mA
• Gate cut-off voltage (VGS(off)): up to −8 V
• Forward transconductance (gfs): 2–6.5 mS at 1 kHz
• Power dissipation: 350 mW
• Pack size: 5 pieces

2N3819 Applications

• Low-noise audio preamplifiers and guitar effects
• High-impedance buffers for sensors and test probes
• Analog switches and choppers
• Constant-current sources
• RF and oscillator circuits
• University electronics labs

What's in the Box

• 5 × 2N3819 N-channel JFETs

Tip: A JFET conducts with 0 V on the gate; make the gate negative relative to the source to reduce the drain current. IDSS varies a lot from part to part, so measure each one if you need matched devices, and check the pin order in the datasheet because it differs between manufacturers.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.