ST100PG1SPCF Equivalent & Substitute Parts

Part Overview

The ST100PG1SPCF is a vented gauge pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, designed for industrial automation applications. This sensor provides analog voltage output in the 0.5V to 4.5V range for pressure measurements up to 100 PSI. The product is currently classified as obsolete, making identification of functionally equivalent alternatives essential for system maintenance, repair, and component sourcing.

Key Parameters

Parameter	Value
Operating Pressure Range	0-100 PSI (689.48 kPa)
Output Type	Analog Voltage
Output Range	0.5V - 4.5V
Supply Voltage	5V
Accuracy	±1%
Pressure Type	Vented Gauge
Port Size	Male 1/8" (3.18mm) NPT
Port Style	Threaded
Operating Temperature	-40°C to 100°C
Features	Amplified Output, Temperature Compensated
Package Type	Cylinder, Metal
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the ST100PG1SPCF is determined by strict alignment of the following critical parameters:

Mandatory Matching Parameters:

Operating pressure range: 0-100 PSI
Output type: Analog voltage
Output range: 0.5V - 4.5V
Pressure type: Vented gauge
Port size and style: Male 1/8" NPT threaded connection
Accuracy: ±1%
Features: Amplified output and temperature compensation

Acceptable Variation Parameters:

Supply voltage tolerance (5V nominal with specified range)
Operating temperature range (substitute may have narrower range)
Maximum pressure rating (substitute may exceed minimum requirement)
Package configuration (cylinder form factor)

The M3431-000006-100PG from TE Connectivity Measurement Specialties meets all mandatory matching parameters and qualifies as a direct functional equivalent.

Parameter Comparison

Parameter	ST100PG1SPCF (Honeywell)	M3431-000006-100PG (TE Connectivity)	Compatibility
Operating Pressure	0-100 PSI (689.48 kPa)	0-100 PSI (689.48 kPa)	Match
Output Type	Analog Voltage	Analog Voltage	Match
Output Range	0.5V - 4.5V	0.5V - 4.5V	Match
Supply Voltage	5V	4.75V - 5.25V	Compatible
Accuracy	±1%	±1%	Match
Pressure Type	Vented Gauge	Vented Gauge	Match
Port Size	Male 1/8" (3.18mm) NPT	Male 1/8" (3.18mm) NPT	Match
Port Style	Threaded	Threaded	Match
Accuracy	±1%	±1%	Match
Features	Amplified Output, Temperature Compensated	Amplified Output, Temperature Compensated	Match
Operating Temperature	-40°C to 100°C	-20°C to 85°C	Substitute Range Narrower
Maximum Pressure	300 PSI (2068.43 kPa)	200 PSI (1378.95 kPa)	Substitute Rated Lower
Package Type	Cylinder, Metal	Cylinder	Compatible
RoHS Status	RoHS Compliant	ROHS3 Compliant	Compatible
Product Status	Obsolete	Active	Substitute Available

Engineering Selection Recommendations

The M3431-000006-100PG qualifies as a direct functional substitute for the ST100PG1SPCF based on electrical and mechanical parameter alignment. The following factors support this substitution:

Compliance and Availability:

The substitute part is currently in active production status, ensuring long-term availability and supply chain reliability
Both parts maintain RoHS compliance (original is RoHS Compliant; substitute is ROHS3 Compliant)
Both parts carry identical ECCN and HTSUS classifications

Electrical Compatibility:

Identical output characteristics (0.5V - 4.5V analog voltage)
Supply voltage specification of 4.75V - 5.25V encompasses the 5V nominal requirement
Matching ±1% accuracy specification

Mechanical Compatibility:

Identical port configuration (Male 1/8" NPT threaded)
Compatible cylinder form factor
Equivalent amplified output and temperature compensation features

Operational Considerations:

The substitute part operates within a narrower temperature range (-20°C to 85°C versus -40°C to 100°C). Verify that the application does not require operation below -20°C or above 85°C
The substitute part has a lower maximum pressure rating (200 PSI versus 300 PSI). This does not affect 0-100 PSI operating range applications but indicates different overpressure protection characteristics

Frequently Asked Questions (FAQ)

Q: Can the M3431-000006-100PG directly replace the ST100PG1SPCF in existing installations?

A: Yes, for applications operating within the temperature range of -20°C to 85°C. The electrical output, pressure range, port configuration, and accuracy specifications are identical. Verify that your application does not require the extended low-temperature operation of the original part.

Q: What is the difference in maximum pressure rating between these parts?

A: The ST100PG1SPCF is rated to 300 PSI maximum pressure, while the M3431-000006-100PG is rated to 200 PSI. Both parts operate identically in the 0-100 PSI range. The difference reflects different overpressure protection designs but does not affect normal operation within the specified 0-100 PSI operating range.

Q: Are there supply voltage compatibility concerns?

A: No. The ST100PG1SPCF requires 5V supply. The M3431-000006-100PG accepts 4.75V to 5.25V, which includes the 5V nominal requirement. Standard 5V power supplies will operate both parts identically.

Q: What is the significance of the different RoHS versions?

A: Both parts are RoHS compliant. The original part meets RoHS Compliant standards, while the substitute meets ROHS3 Compliant standards. ROHS3 represents a more recent version of the directive with additional restricted substances. Both are acceptable for industrial automation applications requiring RoHS compliance.

Q: Does the substitute part include cable termination?

A: Yes. The M3431-000006-100PG includes a 2-foot cable termination, whereas the original part specification does not detail termination style. Verify that cable length and termination type are compatible with your installation requirements.

Q: Are there any REACH or environmental compliance differences?

A: The M3431-000006-100PG is marked as REACH Affected. Verify REACH compliance requirements for your specific application and geographic region. The original part specification does not include REACH status information.

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