ASCX01DN Pressure Sensor Equivalent & Substitute Parts

Part Overview

The ASCX01DN is a differential pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, rated for 1PSI (6.89kPa) differential measurement with dual analog voltage output (0.25V ~ 4.75V). The device features amplified output, temperature compensation, and operates across -25°C to 105°C. This part is classified as obsolete, making equivalent and substitute components necessary for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Manufacturer Part Number	ASCX01DN
Manufacturer	Honeywell Sensing and Productivity Solutions
Series	ASCX
Pressure Type	Differential
Operating Pressure	1PSI (6.89kPa)
Output Type	Analog Voltage
Output Range	0.25V ~ 4.75V
Accuracy	±1%
Supply Voltage	4.5V ~ 16V
Port Size	Male - 0.19" (4.8mm) Tube, Dual
Package / Case	6-SIP Module
Mounting Type	Through Hole
Operating Temperature	-25°C ~ 105°C
Product Status	Obsolete
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution compatibility for the ASCX01DN is determined by the following critical parameters:

Pressure Measurement Criteria:

Operating pressure rating: 1PSI (6.89kPa) differential
Pressure type: Differential measurement capability

Electrical Interface Criteria:

Output type: Analog voltage signal
Output voltage range: 0.25V ~ 4.75V
Supply voltage compatibility: 4.5V ~ 16V

Mechanical Interface Criteria:

Port size: Male - 0.19" (4.8mm) Tube, Dual
Port style: Barbless
Mounting type: Through Hole
Termination style: PC Pin

Environmental & Compliance Criteria:

Operating temperature range: -25°C ~ 105°C
RoHS compliance status

The substitute parts listed below maintain compatibility with these core parameters while offering variations in package configuration, pressure type classification, and enhanced specifications.

Parameter Comparison

Parameter	ASCX01DN (Main)	ASDXRRX001PGAA5	SSCSNBN001PGAA5	1 PSI-D-4V-ASCX
Manufacturer	Honeywell	Honeywell	Honeywell	Amphenol All Sensors
Series	ASCX	ASDX	TruStability® SSC	ASCX
Pressure Type	Differential	Vented Gauge	Vented Gauge	Differential
Operating Pressure	1PSI (6.89kPa)	1PSI (6.89kPa)	1PSI (6.89kPa)	±1PSI (±6.89kPa)
Output Type	Analog Voltage	Analog Voltage	Analog Voltage	Wheatstone Bridge
Output Range	0.25V ~ 4.75V	0.5V ~ 4.5V	0.5V ~ 4.5V	0.25V ~ 4.75V
Accuracy	±1%	±2%	±0.25%	±0.5%
Supply Voltage	4.5V ~ 16V	4.75V ~ 5.25V	4.75V ~ 5.25V	4.5V ~ 5.5V
Port Size	Male - 0.19" (4.8mm) Tube, Dual	Male - 0.09" (2.31mm) Tube, Dual	Male - 0.19" (4.8mm) Tube, Dual	Male - 0.19" (4.8mm) Tube, Dual
Package / Case	6-SIP Module	8-DIP Module	4-SIP, Dual Ports, Same Side	4-SIP
Operating Temperature	-25°C ~ 105°C	-20°C ~ 105°C	-40°C ~ 85°C	-25°C ~ 105°C
Maximum Pressure	20PSI (137.9kPa)	2PSI (13.79kPa)	10PSI (68.95kPa)	±5PSI (±34.47kPa)
Product Status	Obsolete	Active	Active	Active
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Direct Differential Measurement Substitutes:

The 1 PSI-D-4V-ASCX (Amphenol All Sensors Corporation) is the primary substitute for differential pressure applications. This part maintains differential pressure measurement capability, identical port size (0.19" tube), matching output voltage range (0.25V ~ 4.75V), and equivalent operating temperature range (-25°C ~ 105°C). The device is currently active in production status with ROHS3 compliance. The 4-SIP package differs from the original 6-SIP module, requiring PCB layout verification. Output type differs (Wheatstone Bridge vs. Analog Voltage), necessitating signal conditioning circuit evaluation.

Gauge Pressure Alternatives:

The SSCSNBN001PGAA5 (Honeywell TruStability® SSC series) provides active product status with superior accuracy (±0.25% vs. ±1%) and matching mechanical interface (0.19" tube, dual ports). This part operates as a vented gauge sensor rather than differential measurement. The 4-SIP package configuration with same-side dual ports differs from the original 6-SIP module. Operating temperature range is reduced (-40°C ~ 85°C vs. -25°C ~ 105°C). Supply voltage is restricted to 4.75V ~ 5.25V, narrower than the original 4.5V ~ 16V range.

The ASDXRRX001PGAA5 (Honeywell ASDX series) offers active product status with vented gauge measurement. Port size is reduced to 0.09" (2.31mm) tube, incompatible with original 0.19" connections. The 8-DIP package differs significantly from 6-SIP. Supply voltage is restricted to 4.75V ~ 5.25V. Maximum pressure rating is lower (2PSI vs. 20PSI).

All substitute parts maintain RoHS compliance and through-hole mounting configuration. Selection depends on pressure measurement type requirements (differential vs. gauge), package footprint constraints, and supply voltage availability in the target application.

Frequently Asked Questions (FAQ)

Q: Can the ASDXRRX001PGAA5 directly replace the ASCX01DN?

A: No. While both are Honeywell pressure sensors with 1PSI operating pressure, the ASDXRRX001PGAA5 measures vented gauge pressure, not differential pressure. Additionally, the port size is 0.09" (2.31mm) versus the original 0.19" (4.8mm), making pneumatic connections incompatible. The 8-DIP package differs from the 6-SIP module, requiring PCB redesign.

Q: Is the SSCSNBN001PGAA5 suitable for differential pressure measurement?

A: No. The SSCSNBN001PGAA5 is a vented gauge pressure sensor. It measures pressure relative to atmospheric reference, not differential pressure between two independent ports. Applications requiring differential measurement must use the 1 PSI-D-4V-ASCX or equivalent differential sensors.

Q: What are the package compatibility implications?

A: The ASCX01DN uses a 6-SIP module. Substitute parts use 4-SIP or 8-DIP packages. These require different PCB footprints and pin configurations. Physical board layout must be verified before implementation. Pin-to-pin electrical mapping must be confirmed with detailed datasheets.

Q: Can the 1 PSI-D-4V-ASCX operate with the original 4.5V ~ 16V supply range?

A: The 1 PSI-D-4V-ASCX supply voltage range is 4.5V ~ 5.5V, narrower than the original 4.5V ~ 16V. Applications using supply voltages above 5.5V require voltage regulation or alternative components. The ASCX01DN's wider supply range (4.5V ~ 16V) is not matched by any listed substitute.

Q: What is the significance of output type differences (Analog Voltage vs. Wheatstone Bridge)?

A: The ASCX01DN provides direct analog voltage output (0.25V ~ 4.75V). The 1 PSI-D-4V-ASCX uses Wheatstone Bridge output, requiring external signal conditioning circuitry for voltage conversion. System electronics must be redesigned to accommodate bridge output signal processing.

Q: Are all substitute parts RoHS compliant?

A: Yes. The ASDXRRX001PGAA5, SSCSNBN001PGAA5, and 1 PSI-D-4V-ASCX are all RoHS compliant (RoHS or ROHS3 status). The ASCX01DN is RoHS Compliant. All parts meet current environmental compliance requirements.

Q: Which substitute offers the best accuracy?

A: The SSCSNBN001PGAA5 provides ±0.25% accuracy, superior to the ASCX01DN (±1%). However, this part measures vented gauge pressure, not differential pressure. For differential measurement, the 1 PSI-D-4V-ASCX offers ±0.5% accuracy, better than the original ±1%.

Q: What is the impact of operating temperature range differences?

A: The ASCX01DN operates -25°C ~ 105°C. The SSCSNBN001PGAA5 range is -40°C ~ 85°C (lower maximum). The 1 PSI-D-4V-ASCX matches the original range (-25°C ~ 105°C). Applications requiring operation above 85°C must use the 1 PSI-D-4V-ASCX or original ASCX01DN stock.

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