For BusinessPricing
Request a demo

J109 AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

J109 product

J109

Transistors

N-channel JFETJ109TO-92Digital switchingLow on-resistance

J109 is a 3-lead N-channel JFET intended for digital switching where low on-resistance is required. The TO-92 version is specified for 40 mA minimum IDSS and 12 Ω maximum on-resistance.

Best for

  • Low-resistance digital switching
  • Through-hole JFET designs

Avoid if

  • A tightly controlled cutoff-voltage range is required
  • Surface-mount assembly is required

Check before use

  • Validate VGS(off) variation in the circuit
  • Confirm drain-source-gate lead orientation
  • Keep drain-gate voltage within 25 V maximum

Key specifications

Device type
N-channel JFET
Drain-gate voltage
25 V max
IDSS
40 mA min at VDS = 15 V, VGS = 0 V
On-resistance
12 Ω max at VDS ≤ 0.1 V, VGS = 0 V
Package
TO-92, 3 leads

Application

Digital switching circuitsLow-resistance signal switching

Datasheet

jfet_j108_j109_interfet-2887565.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for J109: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
Get Files
PCB Footprint
Land pattern for PCB layout
Get Files
3D Model
STEP file for mechanical design
Get Files
KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
Generate library

Login required · CAD models billed separately as an add-on

Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

J109 is an onsemi N-channel junction field-effect transistor (JFET) supplied in a 3-lead TO-92 package. It is designed for digital switching applications requiring low drain-source on-resistance.