ASCX30AN Pressure Sensor - Equivalent & Substitute Parts

Part Overview

The ASCX30AN is a 30 PSI absolute pressure sensor manufactured by Honeywell Sensing and Productivity Solutions. This component features amplified analog voltage output (0.25 V ~ 4.75 V), temperature compensation, and a barbless male tube port (0.19" / 4.8mm). The device operates across -25°C to 105°C and is rated for 60 PSI maximum pressure with ±1% accuracy.

The ASCX30AN is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications requiring 30 PSI absolute pressure measurement with comparable electrical and mechanical characteristics.

Key Parameters

Parameter	ASCX30AN
Manufacturer	Honeywell Sensing and Productivity Solutions
Operating Pressure	30 PSI (206.84 kPa) Absolute
Output Type	Analog Voltage
Output Range	0.25 V ~ 4.75 V
Supply Voltage	4.5 V ~ 16 V
Accuracy	±1%
Port Size	Male - 0.19" (4.8 mm) Tube
Port Style	Barbless
Package Type	6-SIP Module
Operating Temperature	-25°C ~ 105°C
Maximum Pressure	60 PSI (413.69 kPa)
Features	Amplified Output, Temperature Compensated
RoHS Status	RoHS Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the ASCX30AN is determined by the following critical parameters:

Pressure Specification: Operating pressure must be 30 PSI absolute to maintain functional equivalence in the application circuit.

Output Characteristics: Output type (analog voltage), output voltage range (0.25 V ~ 4.75 V or compatible), and supply voltage compatibility (4.5 V minimum) are essential for direct circuit replacement.

Mechanical Interface: Port size (0.19" / 4.8 mm male tube) and port style (barbless) must match to ensure pneumatic compatibility without adapter requirements.

Electrical Termination: PC pin termination and through-hole mounting type are required for board-level integration.

Environmental Compliance: RoHS compliance status ensures regulatory alignment with modern manufacturing standards.

Substitute parts are grouped into two categories:

Category 1 - Direct Functional Equivalents: Parts with identical 30 PSI absolute pressure rating, matching output voltage range, and compatible mechanical interfaces. These parts support direct circuit substitution with minimal or no design modification.

Category 2 - Pressure-Variant Alternatives: Parts with different pressure ratings (15 PSI) that may be suitable only in applications where the lower pressure range is acceptable and output scaling is manageable.

Parameter Comparison

Parameter	ASCX30AN	SSCSNBN030PAAA5	30 PSI-A-4V-ASCX	30 PSI-D-4V-ASCX	SSCDANN015PAAB5
Manufacturer	Honeywell	Honeywell	Amphenol All Sensors	Amphenol All Sensors	Honeywell
Operating Pressure	30 PSI Absolute	30 PSI Absolute	30 PSI Absolute	±30 PSI Differential	15 PSI Absolute
Pressure Type	Absolute	Absolute	Absolute	Differential	Absolute
Output Type	Analog Voltage	Analog Voltage	Wheatstone Bridge	Wheatstone Bridge	Analog Voltage
Output Range	0.25 V ~ 4.75 V	0.5 V ~ 4.5 V	0.25 V ~ 4.75 V	0.25 V ~ 4.75 V	0.25 V ~ 4.75 V
Supply Voltage	4.5 V ~ 16 V	4.75 V ~ 5.25 V	4.5 V ~ 5.5 V	4.5 V ~ 5.5 V	4.75 V ~ 5.25 V
Accuracy	±1%	±0.25%	±0.5%	±0.5%	±0.25%
Port Size	0.19" (4.8 mm)	0.19" (4.8 mm)	0.19" (4.8 mm)	0.19" (4.8 mm) Dual	0.19" (4.93 mm)
Port Style	Barbless	Barbless	Barbless	Barbless	Barbed
Package Type	6-SIP Module	4-SIP Dual Ports	4-SIP	4-SIP	8-DIP (0.524", 13.30 mm)
Operating Temperature	-25°C ~ 105°C	-40°C ~ 85°C	-25°C ~ 105°C	-25°C ~ 105°C	-40°C ~ 85°C
Maximum Pressure	60 PSI	60 PSI	100 PSI	±100 PSI	30 PSI
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	RoHS Compliant

Engineering Selection Recommendations

Primary Substitute: SSCSNBN030PAAA5

The SSCSNBN030PAAA5 is the recommended direct substitute for the ASCX30AN. Both components share identical 30 PSI absolute pressure specifications, matching port size (0.19" / 4.8 mm barbless), and compatible analog voltage output. The SSCSNBN030PAAA5 is manufactured by Honeywell and maintains active product status, ensuring long-term supply availability. Output voltage range (0.5 V ~ 4.5 V) is compatible with the original specification. The component features improved accuracy (±0.25% versus ±1%) and operates across -40°C to 85°C. Package configuration is 4-SIP with dual ports on the same side, requiring PCB layout evaluation. Supply voltage range (4.75 V ~ 5.25 V) is narrower than the original but compatible with standard 5 V logic supplies.

Secondary Substitute: 30 PSI-A-4V-ASCX

The 30 PSI-A-4V-ASCX manufactured by Amphenol All Sensors Corporation provides functional equivalence with identical 30 PSI absolute pressure rating and matching mechanical interface. Output voltage range (0.25 V ~ 4.75 V) is identical to the ASCX30AN. This component is active and available. Output type is Wheatstone Bridge rather than amplified analog voltage, requiring signal conditioning circuit evaluation. Accuracy is ±0.5%, and operating temperature range (-25°C ~ 105°C) matches the original. Maximum pressure rating (100 PSI) exceeds the original specification. Package type is 4-SIP, requiring PCB footprint verification.

Alternative Consideration: 30 PSI-D-4V-ASCX

The 30 PSI-D-4V-ASCX is a differential pressure variant with ±30 PSI rating. This component is suitable only for applications requiring differential pressure measurement and is not a direct substitute for absolute pressure applications.

Not Recommended: SSCDANN015PAAB5

The SSCDANN015PAAB5 operates at 15 PSI absolute pressure, which is half the original specification. This component is not suitable for applications requiring 30 PSI measurement capability and is listed for reference only.

Frequently Asked Questions (FAQ)

Q: Can the SSCSNBN030PAAA5 replace the ASCX30AN without circuit modification?

A: The SSCSNBN030PAAA5 shares the same 30 PSI absolute pressure rating, port size, and output voltage range. However, the package configuration differs (4-SIP dual ports versus 6-SIP module), requiring PCB footprint verification. Supply voltage range is narrower (4.75 V ~ 5.25 V), which may require power supply adjustment if the original design utilized the full 4.5 V ~ 16 V range. Output voltage offset differs slightly (0.5 V minimum versus 0.25 V minimum), which may require signal conditioning circuit calibration.

Q: What is the difference between the Honeywell and Amphenol substitutes?

A: Both manufacturers offer 30 PSI absolute pressure sensors with matching mechanical interfaces. Honeywell SSCSNBN030PAAA5 provides amplified analog voltage output with ±0.25% accuracy. Amphenol 30 PSI-A-4V-ASCX provides Wheatstone Bridge output with ±0.5% accuracy. Wheatstone Bridge output requires external signal conditioning and amplification, while amplified analog voltage output is ready for direct ADC input. Selection depends on existing signal conditioning infrastructure.

Q: Why is the SSCDANN015PAAB5 listed if it cannot replace the ASCX30AN?

A: The SSCDANN015PAAB5 is listed in the original substitute documentation but is not functionally equivalent due to its 15 PSI pressure rating. It is included for reference to clarify why it is not suitable. Applications requiring 30 PSI measurement cannot use a 15 PSI sensor without exceeding the device's maximum pressure specification.

Q: What are the package compatibility considerations?

A: The ASCX30AN uses a 6-SIP module package. The SSCSNBN030PAAA5 uses a 4-SIP package with dual ports on the same side. The 30 PSI-A-4V-ASCX uses a standard 4-SIP package. PCB footprint, pin spacing, and port orientation must be verified before substitution. Mechanical port configuration (single versus dual ports) affects pneumatic circuit design.

Q: Are all substitute parts RoHS compliant?

A: Yes. The ASCX30AN is RoHS Compliant. The SSCSNBN030PAAA5, 30 PSI-A-4V-ASCX, and 30 PSI-D-4V-ASCX are ROHS3 Compliant. The SSCDANN015PAAB5 is RoHS Compliant. All parts meet current regulatory requirements for hazardous substance restrictions.

Q: What is the impact of accuracy differences between substitutes?

A: The ASCX30AN specifies ±1% accuracy. The SSCSNBN030PAAA5 and SSCDANN015PAAB5 specify ±0.25% accuracy, representing improved performance. The Amphenol parts (30 PSI-A-4V-ASCX and 30 PSI-D-4V-ASCX) specify ±0.5% accuracy. Improved accuracy may require signal processing algorithm adjustment if the original design compensated for ±1% error margins.

Q: Can the 30 PSI-D-4V-ASCX be used in place of the ASCX30AN?

A: No. The 30 PSI-D-4V-ASCX is a differential pressure sensor (±30 PSI), not an absolute pressure sensor. Differential sensors measure pressure difference between two ports, while absolute sensors measure pressure relative to vacuum. These are fundamentally different measurement principles and are not interchangeable.

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