MG-300-A-MD-R Digital Pressure Sensor Equivalent & Substitute Parts

Part Overview

The MG-300-A-MD-R is a digital pressure sensor manufactured by Amphenol SSI Technologies, designed for industrial automation applications requiring pressure measurement up to 300 PSI with LCD display output. This sensor features a Wheatstone Bridge output with 4-20 mA signal transmission and temperature compensation for stable operation across -10°C to 60°C.

The MG-300-A-MD-R is classified as obsolete. Identifying equivalent and substitute parts is necessary to ensure continued availability for system maintenance, replacement, and new installations where this model is specified or functionally required.

Substiute Parts

MG-300-A-MD-R

Amphenol SSI TechnologiesIn Stock: 897MG-300-A-MD-R Datasheet

Current PartRFQ

MG-300-A-M12-R

Amphenol SSI TechnologiesIn Stock: 773MG-300-A-M12-R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MG-300-A-MD-R is determined by the following critical parameters:

Functional Parameters:

• Operating pressure rating: 300 PSI nominal
• Output signal type: Wheatstone Bridge with 4-20 mA and LCD display capability
• Accuracy specification: ±0.25%
• Supply voltage: 12V
• Temperature compensation feature

Physical Parameters:

• Port connection: Male 1/4" NPT threaded interface
• Pressure type: Vented gauge configuration

Compliance Parameters:

• RoHS compliance status
• Moisture sensitivity level MSL 1

The substitute part MG-300-A-M12-R maintains functional equivalence across all critical electrical and mechanical parameters while differing in packaging configuration and product status.

Parameter Comparison

Engineering Selection Recommendations

The MG-300-A-M12-R is a direct functional equivalent to the MG-300-A-MD-R. Both sensors are manufactured by Amphenol SSI Technologies and share identical electrical specifications, pressure ratings, output characteristics, and operating parameters.

Primary Distinction: Product status and packaging configuration. The MG-300-A-MD-R is obsolete with limited inventory availability (832 pieces), while the MG-300-A-M12-R maintains active production status with current inventory (745 pieces). The MG-300-A-M12-R is supplied in bulk packaging versus the module box configuration of the main part.

Compliance Basis: Both parts maintain RoHS compliance and MSL 1 moisture sensitivity rating, ensuring regulatory and environmental compatibility for industrial automation applications.

For new system designs or long-term maintenance planning, the MG-300-A-M12-R is the appropriate selection due to active product status and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can the MG-300-A-M12-R directly replace the MG-300-A-MD-R in existing installations?

A: Yes. Both sensors provide identical electrical output (Wheatstone Bridge, 4-20 mA, LCD display), operate at 12V supply, and feature the same 1/4" NPT male threaded port. Pressure ratings, accuracy (±0.25%), and operating temperature range (-10°C to 60°C) are equivalent. Physical installation compatibility is maintained.

Q: What is the difference between Module Box with Display packaging and Bulk packaging?

A: Module Box with Display packaging includes integrated display housing and mounting provisions. Bulk packaging supplies the sensor component without integrated display enclosure. Functional performance and electrical characteristics remain identical. Selection depends on system integration requirements and display interface needs.

Q: Why is the MG-300-A-MD-R classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. The MG-300-A-M12-R represents the current production equivalent, ensuring access to ongoing technical support and supply chain continuity.

Q: Are both parts RoHS compliant?

A: Yes. Both MG-300-A-MD-R and MG-300-A-M12-R maintain RoHS compliance certification, meeting environmental and regulatory requirements for industrial automation applications.

Q: What does MSL 1 (Unlimited) moisture sensitivity mean?

A: MSL 1 indicates the component has unlimited shelf life under standard storage conditions without moisture-related degradation. No special moisture control measures are required during storage or handling.