AI-550S Equivalent & Substitute Parts

Part Overview

The AI-550S is a piezo buzzer manufactured by PUI Audio, Inc., designed as an internally driven indicator with 12V DC rated voltage and through-hole PC pin termination. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design requirements and component procurement.

Substiute Parts

AI-550S

PUI Audio, Inc.In Stock: 1052AI-550S Datasheet

Current PartRFQ

AI-2429-TWT-12V-3-R

PUI Audio, Inc.In Stock: 1068AI-2429-TWT-12V-3-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AI-2429-TWT-12V-3-R qualifies as a direct substitute for the AI-550S based on the following alignment of critical parameters:

• Manufacturer: Identical (PUI Audio, Inc.)
• Driver Circuitry: Identical (Indicator, Internally Driven)
• Input Type: Identical (DC)
• Voltage - Rated: Identical (12 V)
• Technology: Identical (Piezo)
• Mounting Type: Identical (Through Hole)
• Termination: Identical (PC Pins)
• Product Status: Active (available for procurement)

The substitute part maintains functional equivalence across all core electrical and mechanical interfaces required for direct replacement in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The AI-2429-TWT-12V-3-R is the designated substitute for the obsolete AI-550S. Selection is based on:

• Functional equivalence across all specified electrical parameters (voltage, input type, driver circuitry)
• Mechanical compatibility (through-hole mounting, PC pin termination)
• Active product status ensuring availability and supply chain continuity
• Enhanced compliance profile (ROHS3 compliant vs. RoHS non-compliant)
• Same manufacturer (PUI Audio, Inc.) ensuring design consistency

The substitute part provides additional documented specifications (frequency, SPL, current, operating temperature range, physical dimensions) that were not available for the original part, enabling more precise system-level design validation.

Frequently Asked Questions (FAQ)

Q: Can the AI-2429-TWT-12V-3-R be used as a direct replacement for the AI-550S?

A: Yes. Both parts share identical driver circuitry, input type, rated voltage, technology, mounting type, and termination. The substitute maintains full functional and mechanical compatibility.

Q: What is the primary reason for substitution?

A: The AI-550S is classified as obsolete. The AI-2429-TWT-12V-3-R is an active product from the same manufacturer, ensuring continued availability and procurement reliability.

Q: Are there differences in physical dimensions?

A: The AI-550S dimensions are not specified in available documentation. The AI-2429-TWT-12V-3-R has a diameter of 0.937" (23.80mm) and maximum seated height of 0.650" (16.50mm). PCB layout compatibility should be verified against original design specifications.

Q: What is the difference in RoHS compliance?

A: The AI-550S is RoHS non-compliant. The AI-2429-TWT-12V-3-R is ROHS3 compliant, meeting current environmental and regulatory standards for electronic components.

Q: Are the electrical operating parameters identical?

A: Both parts are rated for 12V DC operation with internally driven piezo technology. The substitute part specifies an operating voltage range of 3 ~ 20V, providing broader operational flexibility than the original part specification.

Q: What packaging format is supplied?

A: The AI-2429-TWT-12V-3-R is supplied in tray packaging. The original AI-550S packaging format is not specified.