Air cleaners
Ventilation control
Air quality monitors


Figaro Engineering Inc. is pleased to announce its latest offering—the world’s lowest** power and the world’s smallest** metal oxide type indoor air quality sensor TGS8100.

Combining advanced Micro Electro Mechanical Systems technology (MEMS) with Figaro’s 40+ years of extensive experience in metal oxide type gas sensing sensors, Figaro has developed a new indoor air quality sensor with the lowest power consumption and the smallest size of any sensor in the market. With its excellent durability and stability, TGS8100 is ideal for applications such as air cleaners, air conditioners and ventilation fan activation in home and office settings.

Due to miniaturization of its sensing chip through use of MEMS technology, TGS8100 is housed in a standard surface mounting package, making it suitable for mass produced devices.

For more info, please contact us.

[an error occurred while processing this directive]TGS8100
  • * World’s lowest** power consumption -- 15mW
  • * World’s smallest size** – 3.2 x 2.5 x 0.99 (mm3)
  • * Quick response
  • * High sensitivity to gaseous air contaminants

** According to Figaro’s own investigation


Model number TGS8100
Sensing principle MOS type
Standard package Ceramic
Target Gases Air contaminants
(hydrogen, ethanol, etc.)
Typical detection range 1 ~ 30ppm H2
Standard circuit conditions Heater voltage VH 1.8V DC±2%
Circuit voltage VC max 3.0V DC for 2msec
0v ≥ 998msec
Load resistance RL variable (10kΩ min.)
Electrical characteristics under standard test conditions Heater resistance RH approx. 110Ω at room temp.
Heater current IH 8mA (typical)
Heater power consumption PH 15mW (typical)
Sensor resistance RS 10kΩ ~ 300kΩ in air
(change ratio of Rs)
~0.6 Rs (10ppm H2)
Rs air
Standard test conditions Test gas conditions normal air
at 20±2˚C, 65±5%RH
Circuit conditions same as std circuit conditions
Conditioning period
before test
1 hour or longer

Sensor resistance (RS) is calculated with a measured value of VOUT(VRL) by using the following formula:

Rs =( VC
-1) x RL

TGS8100 is an ESD-sensitive device. Figaro recommends using ESD protection equipment for handling the sensor.

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