MLH01KPST04A Equivalent & Substitute Parts

Part Overview

The MLH01KPST04A is an all-metal sealed gauge pressure sensor manufactured by Honeywell Sensing and Productivity Solutions. This component delivers amplified analog voltage output with temperature compensation for industrial automation applications. The sensor operates at 1000 PSI nominal pressure with a 0.5 V to 4.5 V output range and ±0.25% accuracy.

This part is classified as obsolete. Identifying equivalent and substitute components is necessary to maintain system functionality, ensure supply chain continuity, and support ongoing production requirements for applications utilizing this sensor specification.

Substiute Parts

MLH01KPST04A

Honeywell Sensing and Productivity SolutionsIn Stock: 972MLH01KPST04A Datasheet

Current PartRFQ

P51-1000-S-E-I12-4.5V-000-000

Amphenol SSI TechnologiesIn Stock: 1063P51-1000-S-E-I12-4.5V-000-000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MLH01KPST04A is determined by strict alignment of the following critical parameters:

Pressure Specification: Operating pressure must be 1000 PSI (6894.76 kPa) sealed gauge type.

Output Characteristics: Output type must be analog voltage with range 0.5 V to 4.5 V.

Electrical Interface: Supply voltage compatibility within 5 V to 6 V range.

Mechanical Interface: Port configuration must be Male 3/8" (9.52 mm) UNF threaded connection.

Functional Features: Amplified output and temperature compensation are required.

Regulatory Compliance: RoHS compliance and EAR99 export classification status.

The substitute part P51-1000-S-E-I12-4.5V-000-000 from Amphenol SSI Technologies meets these core substitution criteria. This part maintains identical pressure rating, output voltage range, port configuration, and functional features. Differences in accuracy specification (±0.5% versus ±0.25%) and operating temperature upper limit (105°C versus 125°C) represent measurable deviations that must be evaluated against application requirements.

Parameter Comparison

Engineering Selection Recommendations

The P51-1000-S-E-I12-4.5V-000-000 from Amphenol SSI Technologies is an active substitute for the obsolete MLH01KPST04A. Both components share identical pressure ratings, output voltage specifications, and mechanical interfaces required for direct functional replacement.

Compliance Status: Both parts maintain RoHS compliance and EAR99 export classification, ensuring regulatory alignment for industrial automation applications.

Supply Continuity: The substitute part is currently in active production status with documented inventory availability (1039 pieces), whereas the original MLH01KPST04A is obsolete. This status difference directly supports supply chain continuity objectives.

Performance Deviations: The substitute exhibits ±0.5% accuracy compared to the original ±0.25% specification. The operating temperature upper limit is 105°C versus 125°C for the original component. These differences must be evaluated against specific application requirements before implementation.

Electrical Compatibility: The substitute operates at 5 V supply voltage, which falls within the original 5 V to 6 V range. Systems designed for the full 5 V to 6 V range must confirm operation at the fixed 5 V specification.

Frequently Asked Questions (FAQ)

Q: Can the P51-1000-S-E-I12-4.5V-000-000 directly replace the MLH01KPST04A in existing installations?

A: Direct mechanical and electrical replacement is possible due to identical port configuration (Male 3/8" UNF), output voltage range (0.5 V to 4.5 V), and pressure rating (1000 PSI sealed gauge). However, the reduced accuracy specification (±0.5% versus ±0.25%) and lower maximum operating temperature (105°C versus 125°C) must be verified against application requirements before implementation.

Q: What are the key differences between these two sensors?

A: The primary differences are: (1) Accuracy: MLH01KPST04A provides ±0.25% versus ±0.5% for the substitute; (2) Operating temperature upper limit: 125°C versus 105°C; (3) Supply voltage: MLH01KPST04A accepts 5 V to 6 V while the substitute operates at fixed 5 V; (4) Product status: MLH01KPST04A is obsolete while the substitute is in active production.

Q: Are both sensors RoHS compliant?

A: Yes. Both the MLH01KPST04A and P51-1000-S-E-I12-4.5V-000-000 are RoHS compliant and classified as EAR99 for export purposes.

Q: What is the significance of the "Sealed Gauge" pressure type?

A: Sealed gauge pressure measurement indicates the sensor measures pressure relative to a sealed reference chamber rather than atmospheric pressure. Both components use this measurement type, ensuring functional equivalence in gauge pressure applications.

Q: Does the substitute part require different signal conditioning or interface electronics?

A: Both sensors provide identical analog voltage output range (0.5 V to 4.5 V) with amplified output. Signal conditioning requirements are equivalent. However, the fixed 5 V supply voltage of the substitute must be confirmed compatible with existing power supply designs that may have been configured for the 5 V to 6 V range of the original component.

Q: What packaging differences exist between these components?

A: The MLH01KPST04A is specified as "Cylinder, Metal" while the substitute is specified as "Cylinder." Both use cylindrical metal construction typical of industrial pressure sensors. The substitute is supplied in box packaging.