HPX100AS Pressure Sensor: Equivalent & Substitute Parts

Part Overview

The HPX100AS is a surface-mount absolute pressure sensor manufactured by Honeywell Sensing and Productivity Solutions. It is designed for board-level applications requiring 100 PSI (689.48 kPa) absolute pressure measurement with a Wheatstone Bridge output of 0 mV to 60 mV at 3V supply. The HPX100AS is classified as obsolete, making identification of active equivalent parts essential for ongoing production, maintenance, and new design implementations.

Key Parameters

Parameter	Value
Operating Pressure	100 PSI (689.48 kPa) Absolute
Output Type	Wheatstone Bridge
Output Range	0 mV ~ 60 mV (3V)
Supply Voltage	3V ~ 10V
Accuracy	±0.3%
Operating Temperature	-40°C ~ 125°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Termination Style	Gull Wing
Maximum Pressure	300 PSI (2068.43 kPa)
Pressure Type	Absolute
Port Style	No Port
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the HPX100AS is determined by strict equivalence across the following critical parameters:

Pressure Measurement Specifications:

Operating pressure: 100 PSI (689.48 kPa) absolute
Pressure type: Absolute
Maximum pressure rating: 300 PSI (2068.43 kPa)

Electrical Characteristics:

Output type: Wheatstone Bridge
Output range: 0 mV ~ 60 mV (3V)
Supply voltage range: 3V ~ 10V

Physical and Mechanical Compatibility:

Package: 8-SOIC (0.154", 3.90mm Width)
Mounting type: Surface Mount
Termination style: Gull Wing
Port style: No Port

Environmental and Regulatory Compliance:

Operating temperature range: -40°C ~ 125°C
RoHS compliance status

The NPP-301A-700A manufactured by Amphenol NovaSensor meets all these critical parameters and qualifies as a parametric equivalent substitute.

Parameter Comparison

Parameter	HPX100AS (Honeywell)	NPP-301A-700A (Amphenol NovaSensor)
Operating Pressure	100 PSI (689.48 kPa) Absolute	100 PSI (689.48 kPa) Absolute
Pressure Type	Absolute	Absolute
Output Type	Wheatstone Bridge	Wheatstone Bridge
Output Range	0 mV ~ 60 mV (3V)	0 mV ~ 60 mV (3V)
Supply Voltage	3V ~ 10V	3V ~ 10V
Accuracy	±0.3%	±0.2%
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C
Maximum Pressure	300 PSI (2068.43 kPa)	300 PSI (2068.43 kPa)
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount
Termination Style	Gull Wing	Gull Wing
Port Style	No Port	No Port
RoHS Status	RoHS Compliant	RoHS Compliant
Product Status	Obsolete	Active

Engineering Selection Recommendations

The NPP-301A-700A is a direct parametric equivalent to the HPX100AS across all critical electrical, mechanical, and environmental specifications. The substitute part is manufactured by Amphenol NovaSensor and maintains active product status, ensuring ongoing availability and supply chain continuity.

Key selection factors:

Compliance and Regulatory Status: Both parts are RoHS Compliant and carry EAR99 ECCN classification. The NPP-301A-700A is REACH Unaffected, matching the regulatory profile of the HPX100AS.

Accuracy Performance: The NPP-301A-700A provides ±0.2% accuracy compared to the HPX100AS at ±0.3%, representing improved measurement precision within the same application envelope.

Product Availability: The NPP-301A-700A is in active production status with 1754 units in stock, whereas the HPX100AS is obsolete. For new designs and ongoing production requirements, the NPP-301A-700A is the appropriate selection.

Packaging and Assembly: Both parts use identical 8-SOIC packaging with gull wing termination, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the NPP-301A-700A be used as a direct replacement for the HPX100AS in existing designs?

A: Yes. The NPP-301A-700A is a parametric equivalent with identical pressure range (100 PSI absolute), output type (Wheatstone Bridge), output range (0 mV ~ 60 mV at 3V), supply voltage (3V ~ 10V), package (8-SOIC), and operating temperature range (-40°C ~ 125°C). No circuit modifications are required.

Q: What is the difference in accuracy between these two parts?

A: The HPX100AS specifies ±0.3% accuracy, while the NPP-301A-700A specifies ±0.2% accuracy. The substitute part provides tighter accuracy performance.

Q: Are there any differences in packaging or handling?

A: Both parts use 8-SOIC (0.154", 3.90mm Width) surface-mount packages with gull wing termination. The HPX100AS is supplied in standard packaging, while the NPP-301A-700A is supplied in tube packaging. Both are RoHS Compliant with MSL ratings appropriate for their respective supply chains.

Q: Why is the HPX100AS listed as obsolete?

A: The HPX100AS has been discontinued by Honeywell Sensing and Productivity Solutions. The NPP-301A-700A from Amphenol NovaSensor is the active equivalent for new production and replacement applications.

Q: Are the electrical characteristics identical for circuit design purposes?

A: Yes. Both parts operate with 3V ~ 10V supply voltage, produce 0 mV ~ 60 mV output from a Wheatstone Bridge configuration, and function across -40°C ~ 125°C. The output impedance and bridge configuration are equivalent for standard signal conditioning circuits.

Q: What is the maximum pressure rating for both parts?

A: Both the HPX100AS and NPP-301A-700A are rated for a maximum pressure of 300 PSI (2068.43 kPa), providing a 3:1 safety margin above the nominal 100 PSI operating pressure.

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