TGS3870 Gas Sensor Low Power Consumption Low Power Consumption Low Cross-Sensitivity To Ethano

Price Negotiable

Price: Negotiable

MOQ: 1

Delivery Time: 3-5work days

Brand: Figaro

Product Description

TGS3870 Gas Sensor

1. Basic Information:

2. Detected Gases:

3. Features:

Compact Size: Φ9.2×13.0 mm, weight ~1.1 g.
Low Power Consumption: Average power consumption of only 38 mW.
High Sensitivity & Selectivity: Excellent sensitivity to methane and CO, with strong selectivity against interference.
Low Cross-Sensitivity to Ethanol: Minimal response to ethanol vapor, a typical interfering gas in residential environments.
Long Service Life & Cost-Effective: Designed for durability and low cost.
RoHS 2 Compliant: UL-approved component.

4. Working Principle:

Adopts MOS (Metal-Oxide-Semiconductor) sensing principle.
Applies periodic high/low voltages (VHH = 0.9V for 5s, VHL = 0.2V for 15s) to the heater.
Uses a micro-bead gas sensing structure to enable dual-gas detection (methane and CO) with a single sensor.

5. Drive Voltages:

6. Detection Range:

7. Application Fields:

Detected Gases	Methane (CH₄), carbon monoxide (CO)
Sensing Principle	MOS (Metal-Oxide-Semiconductor)
Dimensions	Φ9.2 mm × 13.0 mm (diameter × height)
Weight	~1.1 g
Heater Voltage (V_H)	VHH = 0.9 V (5 s), VHL = 0.2 V (15 s) [periodic waveform]
Heater Power Consumption	~38 mW (average)
Circuit Voltage (V_C)	5.0 V DC
Load Resistance (R_L)	10 kΩ
Detection Range	- Methane: 500–12,500 ppm - CO: 50–1,000 ppm
Sensitivity (Rair/Rgas)	- Methane (1,000 ppm): ≥3.0 - CO (100 ppm): ≥2.0
Response Time (T90)	≤10 seconds (to 90% response)
Recovery Time	≤60 seconds (to 90% recovery)
Operating Temperature	-20°C to +50°C
Storage Temperature	-30°C to +70°C
Humidity Range	15%–90% RH (non-condensing)
Cross-Sensitivity	- Ethanol (1,000 ppm): ≤1.5 - Hydrogen (1,000 ppm): ≤2.0
Service Life	≥5 years (under normal conditions)
Certifications	RoHS 2 compliant, UL approved