Honeywell 9251403 Pressure Sensor - Equivalent & Substitute Parts

Part Overview

The Honeywell 9251403 is a sealed gauge pressure sensor from the Eclipse series designed for 300PSI (2068.43kPa) applications with analog voltage output. This component features amplified output and temperature compensation, operating across -40°C to 105°C with ±0.25% accuracy. The part is classified as obsolete, making equivalent substitute components necessary for ongoing system maintenance and new design implementations. The sensor utilizes a male 1/8" NPT threaded port and delivers 0.5V to 4.5V output from a 5V supply.

Substiute Parts

9251403

Honeywell Sensing and Productivity SolutionsIn Stock: 10419251403 Datasheet

Current PartRFQ

MLH300PSB06A

Honeywell Sensing and Productivity SolutionsIn Stock: 865MLH300PSB06A Datasheet

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P51-300-S-G-MD-4.5V-000-000

Amphenol SSI TechnologiesIn Stock: 1028P51-300-S-G-MD-4.5V-000-000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute components for the Honeywell 9251403 are qualified based on the following critical parameters that determine functional equivalence:

Primary Matching Criteria:

• Pressure Type: Sealed Gauge
• Operating Pressure: 300PSI (2068.43kPa)
• Output Type: Analog Voltage
• Output Range: 0.5V ~ 4.5V
• Port Size: Male - 1/8" (3.18mm) NPT
• Port Style: Threaded
• Features: Amplified Output, Temperature Compensated
• Supply Voltage: 5V (or compatible range)
• RoHS Compliance: Required

Secondary Compatibility Factors:

• Accuracy specification (±0.25% preferred, ±0.5% acceptable)
• Operating temperature range (-40°C minimum, 105°C minimum)
• Termination style compatibility with system integration

Two substitute parts meet these criteria and are classified as active products with current manufacturing availability.

Parameter Comparison

Engineering Selection Recommendations

Honeywell MLH300PSB06A is the primary substitute for the obsolete Honeywell 9251403. Both components are manufactured by Honeywell Sensing and Productivity Solutions, ensuring design continuity and compatibility. The MLH300PSB06A maintains identical pressure rating, output characteristics, and port configuration. The extended operating temperature range (-40°C to 125°C versus -105°C) and higher maximum pressure rating (900PSI versus 300PSI) provide enhanced operational margins. The MLH300PSB06A is an active product with confirmed manufacturing availability (793 units in stock). Termination style differs (Packard Metripak 150 versus unspecified), requiring verification of connector compatibility with existing system harnesses.

Amphenol P51-300-S-G-MD-4.5V-000-000 serves as an alternative substitute from a different manufacturer. This component matches all critical functional parameters including pressure rating, output range, and port configuration. The accuracy specification is ±0.5% compared to ±0.25%, representing a 0.25% tolerance degradation. Operating temperature range is identical (-40°C to 105°C). The termination style is MD 4-pin, differing from both the original part and the Honeywell substitute. This component is active with high availability (1001 units in stock). Selection of this part requires confirmation that the ±0.5% accuracy meets system requirements and that MD 4-pin termination is compatible with the application.

Both substitute parts are RoHS compliant and carry identical ECCN and HTSUS classifications as the original component.

Frequently Asked Questions (FAQ)

Q: Why is the Honeywell 9251403 no longer available?

A: The Honeywell 9251403 is classified as obsolete. Honeywell has transitioned this product line to active alternatives such as the MLH series. Obsolete status indicates the manufacturer has discontinued production and will not accept new orders.

Q: Can the Honeywell MLH300PSB06A directly replace the 9251403 in existing systems?

A: The MLH300PSB06A matches all critical functional parameters: sealed gauge pressure type, 300PSI operating pressure, 0.5V to 4.5V analog output, and 1/8" NPT male threaded port. However, the termination style differs (Packard Metripak 150 versus unspecified on the original). System integration requires verification that the connector type is compatible with existing harnesses and PCB receptacles.

Q: What is the accuracy difference between the Honeywell MLH300PSB06A and the Amphenol P51-300-S-G-MD-4.5V-000-000?

A: The Honeywell MLH300PSB06A specifies ±0.25% accuracy, matching the original 9251403. The Amphenol part specifies ±0.5% accuracy. This represents a 0.25% tolerance degradation. Applications requiring ±0.25% accuracy must use the Honeywell MLH300PSB06A or the original 9251403 if available from inventory.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both the Honeywell MLH300PSB06A and Amphenol P51-300-S-G-MD-4.5V-000-000 are RoHS compliant, matching the compliance status of the original Honeywell 9251403.

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

A: The Honeywell MLH300PSB06A has a maximum pressure rating of 900PSI (6205.28kPa), providing a 3:1 safety margin above the 300PSI operating pressure. The Amphenol part does not specify a maximum pressure rating in the provided data. For applications requiring defined overpressure protection specifications, the Honeywell MLH300PSB06A is the preferred choice.

Q: Can I use the Amphenol P51-300-S-G-MD-4.5V-000-000 if my system requires ±0.25% accuracy?

A: No. The Amphenol part specifies ±0.5% accuracy. If your system design requires ±0.25% accuracy, you must use the Honeywell MLH300PSB06A or source remaining inventory of the original 9251403. Accuracy specifications are design-critical parameters and cannot be exceeded without system re-qualification.

Q: What is the operating temperature range for each substitute?

A: The Honeywell MLH300PSB06A operates from -40°C to 125°C, providing a 20°C extended upper temperature limit compared to the original 9251403 (-40°C to 105°C). The Amphenol P51-300-S-G-MD-4.5V-000-000 operates from -40°C to 105°C, matching the original specification. For high-temperature applications above 105°C, the Honeywell MLH300PSB06A is required.

Q: Do both substitutes support the same 5V supply voltage?

A: The Amphenol P51-300-S-G-MD-4.5V-000-000 requires exactly 5V supply. The Honeywell MLH300PSB06A accepts 5V to 6V supply range, providing greater flexibility for systems with variable supply voltage. Both are compatible with standard 5V power supplies.

Q: What termination styles are available on the substitute parts?

A: The Honeywell MLH300PSB06A uses Packard Metripak 150 termination. The Amphenol P51-300-S-G-MD-4.5V-000-000 uses MD 4-pin termination. The original 9251403 termination style is not specified in the provided data. System integration requires confirmation that the selected substitute's termination style is compatible with existing connectors and PCB receptacles.