The SGAS701 is a solid-state chemiresistor sensor designed to detect hydrogen in air. The sensor uses an integrated heater with highly sensitive MOx material tailored for detection of hydrogen.


  • High sensitivity to low hydrogen concentrations (10 to 1000 ppm)
  • Fast response time (15 seconds at 100 ppm)
  • Environmental temperature range of -20°C to 50°C
  • Environmental humidity range of 0% to 90% RH, non‑condensing
  • Low dependence on flow rate

Product Options

Orderable Part ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active TO 4 C Yes Tray

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
SGAS701 Datasheet Datasheet PDF 823 KB
Application Notes & White Papers
AN-992 - Digital Interface for SGAS7xx Sensors Application Note PDF 429 KB
AN-988 Resistance Measuring Circuits for SGAS Sensors Application Note PDF 581 KB
AN-989 Analog Front-End Reference Design for SGAS Sensors Application Note PDF 409 KB
Sensing Technologies and Sensor Solutions Overview 简体中文 Overview PDF 1.96 MB
SGAS701, SGAS707 and SGAS711 Gas Sensors Overview 日本語 Overview PDF 235 KB

Boards & Kits

Part Number Title Type Company
SMOD701 Trace Hydrogen Sensor Evaluation Kit