AI-550AS Equivalent & Substitute Parts

Part Overview

The AI-550AS is a piezo buzzer indicator manufactured by PUI Audio, Inc., designed for 12V DC applications with a 2.9kHz operating frequency. This component features internal drive circuitry and through-hole PC pin termination for direct PCB mounting. The product is currently classified as obsolete, making identification of compatible substitute components essential for ongoing system maintenance and new design implementations.

Substiute Parts

AI-550AS

PUI Audio, Inc.In Stock: 661AI-550AS Datasheet

Current PartRFQ

AI-2429-TWT-12V-2-R

PUI Audio, Inc.In Stock: 40883AI-2429-TWT-12V-2-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AI-2429-TWT-12V-2-R serves as a functional substitute for the AI-550AS based on the following critical parameters:

Matching Parameters:

• Rated voltage: 12V DC
• Input type: DC
• Operating frequency: 2.9kHz
• Driver circuitry: Indicator, Internally Driven
• Mounting type: Through Hole
• Termination: PC Pins
• Manufacturer: PUI Audio, Inc.
• Series: AI

Substitution Basis: Both components operate at identical voltage and frequency specifications with internally driven indicator circuitry. The through-hole PC pin configuration ensures mechanical and electrical compatibility at the PCB interface. The substitute part maintains the same functional classification within the PUI Audio AI series.

Parameter Comparison

Engineering Selection Recommendations

The AI-2429-TWT-12V-2-R is the designated substitute for the obsolete AI-550AS. Selection of this component is based on:

Product Status: The AI-550AS is obsolete with no ongoing manufacturing. The AI-2429-TWT-12V-2-R is active production status, ensuring availability and supply chain continuity.

Compliance: The substitute part achieves ROHS3 compliance, addressing regulatory requirements that may not have applied to the original obsolete component. Both components maintain EAR99 ECCN classification and REACH unaffected status.

Electrical Compatibility: Identical 12V DC rated voltage and 2.9kHz frequency ensure direct functional replacement in existing circuit designs. The substitute's extended voltage range (3 ~ 20V) provides additional operational flexibility beyond the original specification.

Physical Interface: Matching through-hole PC pin termination and internally driven indicator circuitry maintain PCB-level compatibility without requiring circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can the AI-2429-TWT-12V-2-R directly replace the AI-550AS in existing designs?

A: Yes. Both components share identical rated voltage (12V), input type (DC), operating frequency (2.9kHz), driver circuitry configuration, and through-hole PC pin termination. No circuit modifications are required.

Q: What is the primary difference between these components?

A: The AI-550AS uses piezo technology, while the AI-2429-TWT-12V-2-R uses electromechanical/magnetic technology. Both operate at the same electrical specifications and frequency. The substitute provides specified performance metrics including 100dB SPL and 8mA supply current.

Q: Does the substitute part require different PCB layout considerations?

A: The AI-2429-TWT-12V-2-R maintains the same through-hole PC pin configuration as the AI-550AS. Physical dimensions differ (23.8mm diameter, 16.5mm height for the substitute), requiring verification of available PCB space.

Q: What is the packaging difference?

A: The AI-550AS packaging is not specified. The AI-2429-TWT-12V-2-R is supplied in tray packaging.

Q: Are there compliance differences between the two parts?

A: The AI-550AS is RoHS non-compliant. The AI-2429-TWT-12V-2-R is ROHS3 compliant, meeting current regulatory requirements for new designs and applications subject to RoHS directives.

Q: What operating temperature range should be considered?

A: The AI-550AS operating temperature is not specified. The AI-2429-TWT-12V-2-R operates across -20°C to 70°C, providing defined thermal performance boundaries for system design.