Equivalent & Substitute Parts for 0.3 PSI-G-4V-PRIME-REF Pressure Sensor

Part Overview

The 0.3 PSI-G-4V-PRIME-REF is a vented gauge pressure sensor manufactured by Amphenol All Sensors Corporation, designed for board mount applications requiring low-pressure measurement. This component features amplified analog voltage output with temperature compensation and operates across an extended temperature range of -40°C to 125°C.

The 0.3 PSI-G-4V-PRIME-REF is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this sensor.

Substiute Parts

0.3 PSI-G-4V-PRIME-REF

Amphenol All Sensors CorporationIn Stock: 8180.3 PSI-G-4V-PRIME-REF Datasheet

Current PartRFQ

0.3 PSI-G-4V-PRIME

Amphenol All Sensors CorporationIn Stock: 8810.3 PSI-G-4V-PRIME Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 0.3 PSI-G-4V-PRIME-REF is determined by strict equivalence across the following critical parameters:

Pressure Specification: Operating pressure of 0.3 PSI (2.07 kPa) and maximum pressure rating of 5 PSI (34.47 kPa) must be maintained.

Output Characteristics: Analog voltage output with range 0.25 V ~ 4.25 V is required for signal compatibility with existing signal conditioning circuits.

Mechanical Interface: Port size of Male - 0.19" (4.8 mm to 4.83 mm) tube with barbless style ensures pneumatic connection compatibility.

Package Configuration: 4-SIP Module with through-hole termination style (PC Pin) must match the original board layout and assembly process.

Environmental Performance: Operating temperature range of -40°C to 125°C and temperature compensation feature must be preserved.

Pressure Type: Vented gauge configuration is required for applications measuring gauge pressure relative to atmospheric reference.

The substitute part 0.3 PSI-G-4V-PRIME meets all these criteria and is therefore classified as an equivalent substitute.

Parameter Comparison

Engineering Selection Recommendations

The 0.3 PSI-G-4V-PRIME is the direct equivalent substitute for the obsolete 0.3 PSI-G-4V-PRIME-REF. Both components are manufactured by Amphenol All Sensors Corporation and share identical pressure specifications, output characteristics, and mechanical interfaces.

Product Status Advantage: The substitute part maintains active product status, ensuring continued availability and manufacturer support. The main part is classified as obsolete, making the substitute the appropriate selection for new designs or ongoing production.

Compliance Consideration: The 0.3 PSI-G-4V-PRIME is RoHS Compliant, meeting current environmental and regulatory requirements for electronic components in many jurisdictions.

Supply Chain: The substitute part has 852 pieces in new original stock, compared to 747 pieces for the obsolete main part, providing improved supply security.

Parameter Differences: Two parameters differ between the main part and substitute:

Accuracy specification changes from ±0.25% to ±0.5%. This represents a relaxation of tolerance but remains within acceptable limits for most gauge pressure measurement applications.

Supply voltage range narrows from 5.5 V ~ 16 V to 4.5 V ~ 5.5 V. System power supply design must operate within the substitute part's narrower voltage window.

Both differences are non-critical for functional substitution in applications where the original design parameters permit these variations.

Frequently Asked Questions (FAQ)

Q: Can the 0.3 PSI-G-4V-PRIME directly replace the 0.3 PSI-G-4V-PRIME-REF without circuit modifications?

A: Direct replacement is possible for most applications. The output voltage range (0.25 V ~ 4.25 V) and pressure measurement range (0.3 PSI) are identical. However, verify that your power supply operates within the substitute part's voltage range of 4.5 V ~ 5.5 V. The main part accepts 5.5 V ~ 16 V, so systems using higher supply voltages require modification.

Q: What is the significance of the accuracy difference between ±0.25% and ±0.5%?

A: The substitute part has a wider accuracy tolerance. For a 0.3 PSI sensor, ±0.25% represents ±0.00075 PSI, while ±0.5% represents ±0.0015 PSI. Applications requiring measurement precision better than ±0.5% may not be suitable for the substitute part. Evaluate your system's accuracy requirements before substitution.

Q: Are the tube port sizes compatible?

A: The main part specifies 0.19" (4.83 mm) tube, while the substitute specifies 0.19" (4.8 mm) tube. These dimensions are functionally equivalent for barbless tube connections. Both parts use identical port style (barbless male), ensuring pneumatic compatibility.

Q: Does the substitute part require different PCB layout or mounting?

A: No. Both parts use identical 4-SIP Module packaging with through-hole PC Pin termination. PCB footprints, mounting holes, and assembly processes remain unchanged.

Q: Why is the substitute part RoHS Compliant while the main part does not specify compliance?

A: The main part is obsolete and predates current RoHS documentation standards. The substitute part is an active product manufactured to current environmental regulations. RoHS Compliance is a manufacturing advantage for new designs and systems subject to environmental regulations.

Q: Can I use the substitute part in applications requiring the full 5.5 V ~ 16 V supply voltage range?

A: No. The substitute part operates only within 4.5 V ~ 5.5 V. If your application requires operation above 5.5 V, the substitute part is not suitable. Modify the power supply design to operate within the substitute part's voltage specification, or identify an alternative component.

Q: Is the temperature compensation feature identical between both parts?

A: Yes. Both the main part and substitute part include temperature compensation and operate across the identical temperature range of -40°C to 125°C. Temperature performance is equivalent.