ASCX05DN Equivalent & Substitute Parts Reference

Part Overview

The ASCX05DN is a differential pressure sensor manufactured by Honeywell Sensing and Productivity Solutions, rated for 5PSI (34.47kPa) differential measurement with analog voltage output (0.25V ~ 4.75V). The sensor features a 0.19" (4.8mm) male barbless tube connection, dual port configuration, and operates across -25°C to 105°C. The product is classified as obsolete, necessitating identification of equivalent and substitute components for ongoing applications requiring differential pressure sensing with comparable electrical and mechanical specifications.

Key Parameters

Parameter	ASCX05DN Value
Pressure Type	Differential
Operating Pressure	5PSI (34.47kPa)
Output Type	Analog Voltage
Output Range	0.25V ~ 4.75V
Port Size	Male - 0.19" (4.8mm) Tube, Dual
Port Style	Barbless
Voltage Supply	4.5V ~ 16V
Accuracy	±1%
Operating Temperature	-25°C ~ 105°C
Package Type	6-SIP Module
Mounting Type	Through Hole
Features	Amplified Output, Temperature Compensated

Substitute Part Grouping Explanation

Substitution eligibility for the ASCX05DN is determined by the following critical parameters: pressure type (differential vs. vented gauge), operating pressure rating, output type and range, port size and style, supply voltage compatibility, and package configuration. The ASCX05DN operates as a differential pressure sensor with 5PSI rating, dual 0.19" barbless ports, and amplified analog voltage output.

Direct Equivalent (Pressure Type Match): The part 5 PSI-D-4V-ASCX maintains differential pressure type classification and 5PSI operating pressure with matching port geometry (0.19" male barbless dual ports) and output range (0.25V ~ 4.75V). This part represents the closest functional equivalent with active product status.

Similar Pressure Rating (Pressure Type Variation): The SSCSNBN005PGAB5 operates at 5PSI (34.47kPa) with matching port size and output range but functions as a vented gauge sensor rather than differential. This represents a pressure type substitution suitable only for applications where vented gauge measurement is acceptable.

Lower Pressure Rating (Not Recommended for Direct Substitution): The ASDXRRX001PGAA5 operates at 1PSI (6.89kPa) with different port size (0.09" vs. 0.19"), different pressure type (vented gauge), and different output range (0.5V ~ 4.5V). This part does not meet the electrical and mechanical compatibility criteria for direct substitution.

Parameter Comparison

Parameter	ASCX05DN	5 PSI-D-4V-ASCX	SSCSNBN005PGAB5	ASDXRRX001PGAA5
Manufacturer	Honeywell	Amphenol All Sensors	Honeywell	Honeywell
Pressure Type	Differential	Differential	Vented Gauge	Vented Gauge
Operating Pressure	5PSI (34.47kPa)	±5PSI (±34.47kPa)	5PSI (34.47kPa)	1PSI (6.89kPa)
Output Type	Analog Voltage	Wheatstone Bridge	Analog Voltage	Analog Voltage
Output Range	0.25V ~ 4.75V	0.25V ~ 4.75V	0.25V ~ 4.75V	0.5V ~ 4.5V
Port Size	0.19" (4.8mm) Dual	0.19" (4.8mm) Dual	0.19" (4.8mm) Dual	0.09" (2.31mm) Dual
Port Style	Barbless	Barbless	Barbless	Barbless
Voltage Supply	4.5V ~ 16V	4.5V ~ 5.5V	4.75V ~ 5.25V	4.75V ~ 5.25V
Accuracy	±1%	±0.5%	±0.25%	±2%
Operating Temperature	-25°C ~ 105°C	-25°C ~ 105°C	-40°C ~ 85°C	-20°C ~ 105°C
Package Type	6-SIP Module	4-SIP	4-SIP, Dual Ports Same Side	8-DIP Module
Product Status	Obsolete	Active	Active	Active
RoHS Compliance	RoHS Compliant	ROHS3 Compliant	RoHS Compliant	RoHS Compliant

Engineering Selection Recommendations

Primary Substitute: 5 PSI-D-4V-ASCX

The 5 PSI-D-4V-ASCX is the recommended substitute for ASCX05DN applications. This part maintains differential pressure type classification, matching 5PSI operating pressure, identical port geometry (0.19" male barbless dual ports), and equivalent output range (0.25V ~ 4.75V). The part carries active product status and ROHS3 compliance certification. The primary design consideration is the output type difference: ASCX05DN provides amplified analog voltage output, while 5 PSI-D-4V-ASCX provides Wheatstone Bridge output. Circuit-level signal conditioning modifications are required for direct substitution. Supply voltage range is narrower (4.5V ~ 5.5V vs. 4.5V ~ 16V), requiring verification of system power supply specifications. Accuracy is improved (±0.5% vs. ±1%), and operating temperature range is identical (-25°C ~ 105°C).

Secondary Substitute: SSCSNBN005PGAB5

The SSCSNBN005PGAB5 is suitable only for applications where vented gauge pressure measurement is functionally equivalent to differential measurement. This part matches the 5PSI operating pressure, port size (0.19" male barbless dual ports), and output range (0.25V ~ 4.75V). The part carries active product status and RoHS compliance. Substitution requires pressure measurement type compatibility verification. Accuracy is superior (±0.25% vs. ±1%), and maximum pressure rating is higher (30PSI vs. 20PSI). Operating temperature range is narrower (-40°C ~ 85°C vs. -25°C ~ 105°C). Supply voltage range is restricted (4.75V ~ 5.25V).

Not Recommended: ASDXRRX001PGAA5

The ASDXRRX001PGAA5 does not meet substitution criteria. Operating pressure (1PSI) is incompatible with 5PSI requirement. Port size (0.09" vs. 0.19") requires mechanical redesign. Output range (0.5V ~ 4.5V) differs from specification. Pressure type (vented gauge) differs from differential requirement.

Frequently Asked Questions (FAQ)

Q: Can ASCX05DN be directly replaced with 5 PSI-D-4V-ASCX without circuit modifications?

A: No. While both sensors maintain differential pressure type and 5PSI rating with matching port geometry, the output type differs. ASCX05DN provides amplified analog voltage output; 5 PSI-D-4V-ASCX provides Wheatstone Bridge output. Signal conditioning circuitry must be modified to accommodate the bridge output configuration.

Q: What is the primary difference between ASCX05DN and SSCSNBN005PGAB5?

A: The primary difference is pressure measurement type. ASCX05DN measures differential pressure (pressure difference between two ports). SSCSNBN005PGAB5 measures vented gauge pressure (pressure relative to atmospheric reference). Both operate at 5PSI with matching port sizes and output ranges. Substitution is valid only if the application can function with vented gauge measurement instead of differential measurement.

Q: Are the port connections mechanically compatible between ASCX05DN and substitute parts?

A: ASCX05DN, 5 PSI-D-4V-ASCX, and SSCSNBN005PGAB5 all feature 0.19" (4.8mm) male barbless dual ports, providing mechanical compatibility. ASDXRRX001PGAA5 features 0.09" (2.31mm) ports and is not mechanically compatible. Tubing and connector specifications must be verified for the selected substitute.

Q: What supply voltage range must be verified when substituting ASCX05DN?

A: ASCX05DN operates across 4.5V ~ 16V. The recommended substitute 5 PSI-D-4V-ASCX operates across 4.5V ~ 5.5V, requiring narrower supply voltage tolerance. System power supply specifications must be verified to ensure operation within the substitute part's voltage range. SSCSNBN005PGAB5 requires 4.75V ~ 5.25V.

Q: How do accuracy specifications compare between ASCX05DN and substitute parts?

A: ASCX05DN provides ±1% accuracy. The 5 PSI-D-4V-ASCX provides improved ±0.5% accuracy. SSCSNBN005PGAB5 provides superior ±0.25% accuracy. ASDXRRX001PGAA5 provides ±2% accuracy. Improved accuracy in substitute parts may benefit system performance but does not affect functional compatibility.

Q: What is the impact of package type differences on PCB integration?

A: ASCX05DN uses 6-SIP Module packaging. The recommended substitute 5 PSI-D-4V-ASCX uses 4-SIP packaging, requiring PCB footprint redesign. SSCSNBN005PGAB5 uses 4-SIP with dual ports on the same side, also requiring footprint modification. ASDXRRX001PGAA5 uses 8-DIP Module packaging. PCB layout and mounting hole patterns must be updated for any substitute part selection.

Q: Are all substitute parts RoHS compliant?

A: Yes. ASCX05DN is RoHS Compliant. 5 PSI-D-4V-ASCX is ROHS3 Compliant. SSCSNBN005PGAB5 is RoHS Compliant. ASDXRRX001PGAA5 is RoHS Compliant. All parts meet environmental compliance requirements.

Q: What operating temperature range considerations apply to substitute selection?

A: ASCX05DN operates -25°C ~ 105°C. The 5 PSI-D-4V-ASCX maintains identical range (-25°C ~ 105°C). SSCSNBN005PGAB5 operates -40°C ~ 85°C, providing lower temperature capability but reduced upper temperature limit. ASDXRRX001PGAA5 operates -20°C ~ 105°C. Application temperature requirements must be verified against substitute part specifications.

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