CPC15AFC Pressure Sensor Equivalent & Substitute Parts

Part Overview

The CPC15AFC is a 15 PSI absolute pressure sensor manufactured by Honeywell Sensing and Productivity Solutions. This component is a board-mount pressure transducer with Wheatstone Bridge output, designed for applications requiring low-pressure measurement in the 0–15 PSI range with temperature compensation. The CPC15AFC operates with a supply voltage range of 3V to 16V and delivers a 0 mV to 90 mV output signal at 12V nominal supply.

The CPC15AFC is classified as an obsolete product. Identifying equivalent substitute parts is necessary to maintain system functionality, ensure design continuity, and support ongoing production or maintenance requirements where original inventory is depleted or unavailable.

Key Parameters

Parameter	Value
Pressure Range (Operating)	15 PSI (103.42 kPa) Absolute
Output Type	Wheatstone Bridge
Output Signal	0 mV – 90 mV (12V)
Supply Voltage	3V – 16V
Accuracy	±2%
Port Configuration	Male Barbed Tube Connection
Port Size	0.15" (3.8 mm) Tube
Package Type	4-SIP Module
Termination	PC Pin Through Hole
Temperature Range	−25°C to +85°C
Maximum Pressure	45 PSI (310.26 kPa)
Features	Temperature Compensated
RoHS Compliance	Yes
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the CPC15AFC is determined by strict equivalence across the following critical parameters:

Pressure Specification: Operating pressure must be 15 PSI (103.42 kPa) absolute. This is the primary functional requirement and cannot be altered.

Output Characteristics: Output type must be Wheatstone Bridge with signal range of 0 mV to 90 mV at 12V supply voltage. Signal compatibility is essential for direct circuit integration without signal conditioning modifications.

Electrical Interface: Supply voltage range must overlap with or encompass the 3V to 16V specification. The substitute must operate within the system's available power supply window.

Mechanical Interface: Port configuration, size, and connection style determine physical installation compatibility. The substitute must accommodate the existing tubing and mounting infrastructure.

Package and Termination: The 4-SIP module package with PC pin through-hole termination must be maintained for PCB compatibility.

Environmental Compliance: RoHS compliance and moisture sensitivity level must meet or exceed the original specification.

The substitute part identified is the 15 PSI-AF-CGRADE-MINI manufactured by Amphenol All Sensors Corporation. This part meets all critical substitution criteria while offering enhanced specifications in certain parameters.

Parameter Comparison

Parameter	CPC15AFC (Honeywell)	15 PSI-AF-CGRADE-MINI (Amphenol)	Compatibility
Pressure Range (Operating)	15 PSI (103.42 kPa)	15 PSI (103.42 kPa)	Equivalent
Pressure Type	Absolute	Absolute	Equivalent
Output Type	Wheatstone Bridge	Wheatstone Bridge	Equivalent
Output Signal	0 mV – 90 mV (12V)	0 mV – 90 mV (12V)	Equivalent
Supply Voltage	3V – 16V	16V	Compatible (Substitute operates at fixed 16V)
Accuracy	±2%	±1%	Substitute offers improved accuracy
Port Style	Male Barbed Tube	Male Barbless Tube	Mechanical difference (see FAQ)
Port Size	0.15" (3.8 mm)	0.18" (4.57 mm)	Mechanical difference (see FAQ)
Package Type	4-SIP Module	4-SIP Module	Equivalent
Termination Style	PC Pin Through Hole	PC Pin Through Hole	Equivalent
Temperature Range	−25°C to +85°C	−25°C to +85°C	Equivalent
Maximum Pressure	45 PSI (310.26 kPa)	60 PSI (413.69 kPa)	Substitute offers higher overpressure rating
Temperature Compensation	Yes	Yes	Equivalent
RoHS Compliance	Yes	Yes	Equivalent
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Equivalent
Product Status	Obsolete	Active	Substitute is currently manufactured

Engineering Selection Recommendations

The 15 PSI-AF-CGRADE-MINI is a direct functional substitute for the CPC15AFC based on equivalent pressure range, output type, signal characteristics, package configuration, and environmental compliance.

Advantages of the Amphenol substitute:

The 15 PSI-AF-CGRADE-MINI offers improved measurement accuracy (±1% versus ±2%), a higher maximum pressure rating (60 PSI versus 45 PSI), and is an active product with ongoing manufacturing support. These enhancements provide greater design margin and long-term supply security.

Mechanical Considerations:

The substitute features a barbless tube connection at 0.18" (4.57 mm) diameter, compared to the original barbed connection at 0.15" (3.8 mm). These differences require mechanical interface adaptation. Tubing compatibility and connection method must be verified for the specific application.

Electrical Considerations:

The substitute operates at a fixed 16V supply voltage, whereas the original accepts 3V to 16V. If the system supplies less than 16V, the substitute output signal will scale proportionally and may not reach the full 0–90 mV range. System power supply specifications must be confirmed.

Compliance:

Both parts are RoHS compliant with MSL 1 rating, ensuring regulatory and environmental compatibility.

Frequently Asked Questions (FAQ)

Q1: Can the 15 PSI-AF-CGRADE-MINI be used as a direct drop-in replacement for the CPC15AFC?

A: Electrical and functional compatibility is confirmed. However, mechanical interface differences exist. The substitute has a barbless 0.18" tube connection versus the original's barbed 0.15" connection. Tubing and fittings must be verified for compatibility with the larger diameter. PCB mounting and electrical connections are identical (4-SIP through-hole).

Q2: What is the impact of the different port sizes (0.15" versus 0.18")?

A: The 0.18" port on the substitute requires tubing with a larger inner diameter. Existing 0.15" tubing will not fit the 0.18" barbed or barbless connection. New tubing and fittings compatible with 0.18" connections must be sourced. This is a mechanical interface change, not an electrical one.

Q3: Why does the substitute specify 16V supply instead of a 3V–16V range?

A: The Amphenol part is rated for 16V nominal supply. If your system operates at voltages below 16V, the output signal will scale proportionally. For example, at 8V supply, the output will be approximately 0–45 mV instead of 0–90 mV. Verify that your signal conditioning and measurement circuits can accommodate this reduced signal range.

Q4: Is the improved accuracy (±1% versus ±2%) significant for my application?

A: Accuracy improvement depends on your measurement requirements. If your system design margin accommodates ±2% error, the ±1% accuracy of the substitute provides additional headroom. If your application requires ±2% or better, both parts meet the requirement. Review your system specifications to determine if the improved accuracy provides benefit.

Q5: What is the difference between barbed and barbless tube connections?

A: Barbed connections have inward-facing ridges that grip tubing to prevent disconnection. Barbless connections rely on friction and fitting design. The barbless design of the substitute may require different tubing or fitting techniques. Consult the Amphenol datasheet for recommended tubing specifications and installation procedures.

Q6: Are there any supply chain or availability differences between these parts?

A: The CPC15AFC is obsolete with no ongoing manufacturing. The 15 PSI-AF-CGRADE-MINI is an active product with current production. For new designs or long-term supply requirements, the Amphenol substitute is the recommended choice.

Q7: Can I use the substitute in applications where the original CPC15AFC was used?

A: Electrical and functional compatibility is confirmed for applications requiring 15 PSI absolute pressure measurement with Wheatstone Bridge output. Mechanical interface changes (port size and style) must be accommodated through tubing and fitting modifications. System power supply must be verified to operate at or above 16V for full signal output.

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