SPEC Sensors 968-034 DGS-CO Digital Gas Sensor Module: Equivalent & Substitute Parts

Part Overview

The SPEC Sensors 968-034 is an active, production carbon monoxide (CO) sensor module featuring USB digital output. This component is designed for applications requiring direct digital CO concentration measurement with integrated signal processing. The module operates across a -20°C to 40°C temperature range and draws 4mA at 2.6V to 3.6V supply voltage. As an active product with full RoHS3 and REACH compliance, the 968-034 remains in standard distribution. Substitute parts are identified when application requirements permit alternative output formats, expanded operating ranges, or different accuracy specifications while maintaining core CO sensing functionality.

Substiute Parts

968-034

SPEC Sensors (a division of Interlink Electronics)In Stock: 1083968-034 Datasheet

Current PartRFQ

968-001

SPEC Sensors (a division of Interlink Electronics)In Stock: 734968-001 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The SPEC Sensors 968-001 is identified as a substitute for the 968-034 based on the following substitution criteria:

Common Core Functionality:

• Both components measure carbon monoxide (CO) concentration
• Both manufactured by SPEC Sensors (Interlink Electronics)
• Both maintain RoHS3 and REACH compliance
• Both are active products in current production

Allowed Parameter Variations for Substitution:

• Output format: USB (968-034) versus 0V to 3V analog voltage (968-001)
• Accuracy specification: ±15% (968-034) versus ±3% (968-001)
• Operating temperature range: -20°C to 40°C (968-034) versus -40°C to 50°C (968-001)
• Supply voltage: 2.6V to 3.6V (968-034) versus 2.7V to 3.3V (968-001)
• Supply current: 4mA (968-034) versus 15µA (968-001)

Substitution is valid when the application can accommodate analog voltage output instead of USB digital output, and when the expanded temperature range and improved accuracy of the 968-001 do not create system integration conflicts.

Parameter Comparison

Engineering Selection Recommendations

Both the 968-034 and 968-001 are active products manufactured by SPEC Sensors with full RoHS3 compliance and REACH unaffected status, ensuring regulatory alignment for current applications.

Select 968-034 when:

• USB digital output interface is required for direct host computer communication
• Operating environment remains within -20°C to 40°C
• System power budget accommodates 4mA supply current
• ±15% accuracy specification meets application requirements

Select 968-001 when:

• Analog voltage output (0V to 3V) is compatible with system signal conditioning
• Extended temperature operation (-40°C to 50°C) is necessary
• Lower supply current (15µA) is advantageous for battery-powered applications
• Improved accuracy (±3%) is required for the measurement application
• Analog signal processing is preferred over USB digital interface

Both parts maintain identical regulatory compliance and active production status, supporting long-term supply continuity.

Frequently Asked Questions (FAQ)

Q: Can the 968-001 directly replace the 968-034 in an existing design?

A: Direct replacement requires system-level compatibility assessment. The primary difference is output format: the 968-034 provides USB digital output while the 968-001 provides 0V to 3V analog voltage output. If the host system expects USB input, the 968-001 cannot be used without signal conditioning circuitry. If the system accepts analog voltage input, the 968-001 is compatible.

Q: What is the significance of the accuracy difference between ±15% and ±3%?

A: Accuracy specification defines the maximum measurement error across the operating range. The 968-001 provides tighter accuracy (±3%) compared to the 968-034 (±15%). Selection depends on application tolerance requirements. Applications requiring precise CO concentration measurement benefit from the 968-001, while applications with broader tolerance windows can use either part.

Q: Why does the 968-001 consume less current (15µA) than the 968-034 (4mA)?

A: Current consumption reflects the power requirements of the output interface and internal signal processing. The 968-034's USB interface and digital processing require higher current. The 968-001's analog output and lower-power design result in significantly reduced current draw, making it suitable for battery-powered or low-power applications.

Q: Are both parts suitable for industrial temperature environments?

A: The 968-034 operates from -20°C to 40°C, suitable for controlled indoor environments. The 968-001 operates from -40°C to 50°C, supporting extended industrial temperature ranges. For applications outside the 968-034's range, the 968-001 is the appropriate selection.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the 968-034 and 968-001 are RoHS3 compliant and REACH unaffected, meeting current regulatory standards for electronic components in regulated markets.

Q: What packaging considerations apply to these parts?

A: The 968-034 is supplied in standard packaging. The 968-001 is supplied in bulk packaging. Verify packaging compatibility with assembly and inventory management requirements before selection.