SGAS701 Hydrogen Sensor - Equivalent & Substitute Parts

Part Overview

The SGAS701 is a trace hydrogen (H2) sensor manufactured by Renesas Electronics Corporation that provides voltage output for hydrogen gas detection applications. This component operates across a supply voltage range of 2.5V to 5V and is designed for temperature environments from -20°C to 50°C. The SGAS701 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system support and new design implementations.

Substiute Parts

SGAS701

Renesas Electronics CorporationIn Stock: 4079SGAS701 Datasheet

Current PartRFQ

VQ21TSB

Amphenol SGX SensortechIn Stock: 1130VQ21TSB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SGAS701 is determined by the following critical parameters:

• Sensor Type: Must be Hydrogen (H2) detection
• Output Type: Must provide Voltage output
• Supply Voltage Compatibility: Substitute must operate within or overlap the 2.5V ~ 5V range
• Environmental Compliance: RoHS3 and REACH status alignment
• Regulatory Classification: ECCN and HTSUS code consistency

The VQ21TSB from Amphenol SGX Sensortech qualifies as a substitute based on matching sensor type (Hydrogen H2), identical output type (Voltage), regulatory compliance (ROHS3 Compliant, REACH Unaffected), and equivalent classification codes (ECCN: EAR99, HTSUS: 9027.10.2000).

Parameter Comparison

Engineering Selection Recommendations

The VQ21TSB is an active product from Amphenol SGX Sensortech and represents the manufacturer-recommended substitute for the obsolete SGAS701. Both components maintain identical RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment in applications requiring these certifications. The VQ21TSB carries the same ECCN and HTSUS classifications, supporting equivalent export and tariff treatment.

Circuit design integration requires attention to the supply voltage differential: the SGAS701 operates at 2.5V ~ 5V while the VQ21TSB operates at 1.9V ~ 2.1V. Applications currently powered at 5V or higher must incorporate voltage regulation to accommodate the VQ21TSB's narrower supply range. The VQ21TSB specifies a 300mA supply current requirement, which should be verified against available power delivery capacity in the target application.

Frequently Asked Questions (FAQ)

Q: Can the VQ21TSB directly replace the SGAS701 without circuit modifications?

A: Direct replacement is not possible without voltage regulation. The SGAS701 accepts 2.5V ~ 5V supply, while the VQ21TSB requires 1.9V ~ 2.1V. Applications operating at the SGAS701's upper voltage range must implement a voltage regulator to step down to the VQ21TSB's specified range.

Q: Are there packaging differences between these parts?

A: The SGAS701 packaging is not specified in the available data. The VQ21TSB is supplied in Bulk packaging. Mechanical compatibility should be verified against the original application's physical constraints.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the SGAS701 and VQ21TSB are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99 and HTSUS 9027.10.2000, ensuring equivalent regulatory treatment.

Q: What is the significance of the VQ20 series designation for the VQ21TSB?

A: The VQ21TSB belongs to the VQ20 series from Amphenol SGX Sensortech. This series designation indicates the product family and manufacturing lineage but does not affect substitution eligibility based on the specified electrical and compliance parameters.

Q: Why is the SGAS701 classified as obsolete?

A: Obsolete status indicates the SGAS701 is no longer manufactured by Renesas Electronics Corporation. The VQ21TSB, maintained as an active product by Amphenol SGX Sensortech, provides continued availability for hydrogen sensing applications.