AI-550A Equivalent & Substitute Parts

Part Overview

The AI-550A is a piezo buzzer manufactured by PUI Audio, Inc., designed as an internally driven indicator with a rated voltage of 12V and through-hole PC pin termination. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The AI-550A operates on DC input with piezo technology, making it suitable for applications requiring audible indication in electronic systems.

Substiute Parts

AI-550A

PUI Audio, Inc.In Stock: 753AI-550A Datasheet

Current PartRFQ

AI-2429-TWT-R

PUI Audio, Inc.In Stock: 5866AI-2429-TWT-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Manufacturer: Both components are manufactured by PUI Audio, Inc., ensuring design consistency and supply chain continuity within the same product family
• Series: Both belong to the AI series, confirming product line compatibility
• Driver Circuitry: Both utilize internally driven indicator circuitry, maintaining functional equivalence
• Input Type: Both operate on DC input, ensuring circuit compatibility
• Rated Voltage: Both are rated at 12V, allowing direct electrical substitution
• Technology: Both employ piezo technology for sound generation
• Mounting Type: Both use through-hole mounting, enabling PCB layout compatibility
• Termination: Both feature PC pin termination, ensuring connector compatibility
• Regulatory Status: Both maintain REACH Unaffected and EAR99 ECCN classifications

Parameter Comparison

Engineering Selection Recommendations

The AI-2429-TWT-R is the designated substitute for the obsolete AI-550A. Selection of this alternative is based on the following engineering criteria:

• Product Status Alignment: The AI-550A is obsolete, while the AI-2429-TWT-R maintains active production status, ensuring long-term availability and supply chain reliability
• Functional Equivalence: Both components share identical driver circuitry, input type, rated voltage, technology platform, mounting configuration, and termination method
• Regulatory Compliance: The AI-2429-TWT-R achieves ROHS3 compliance, representing an improvement over the non-compliant AI-550A for applications subject to RoHS directives
• Electrical Compatibility: The 12V rated voltage and DC input specification ensure direct circuit substitution without modification to existing power supply or control circuitry
• Physical Compatibility: Through-hole mounting and PC pin termination enable direct PCB layout compatibility

Frequently Asked Questions (FAQ)

Q: Can the AI-2429-TWT-R be used as a direct replacement for the AI-550A?

A: Yes. Both components share the same rated voltage (12V), driver circuitry (internally driven indicator), input type (DC), technology (piezo), mounting type (through hole), and termination method (PC pins). The AI-2429-TWT-R is electrically and mechanically compatible with the AI-550A.

Q: What is the primary reason for substitution?

A: The AI-550A is classified as obsolete. The AI-2429-TWT-R is an active product from the same manufacturer and series, providing procurement continuity and long-term availability.

Q: Are there dimensional differences between these components?

A: The AI-2429-TWT-R specifies a diameter of 0.937" (23.80mm) and maximum seated height of 0.650" (16.50mm). The AI-550A does not provide dimensional specifications. PCB layout verification is necessary to confirm physical fit within the available mounting space.

Q: Does the AI-2429-TWT-R meet RoHS requirements?

A: Yes. The AI-2429-TWT-R is ROHS3 compliant, whereas the AI-550A is RoHS non-compliant. This represents an improvement for applications subject to RoHS directives.

Q: What is the operating voltage range of the AI-2429-TWT-R?

A: The AI-2429-TWT-R operates across a voltage range of 3V to 20V, with a rated voltage of 12V. The AI-550A does not specify an operating voltage range.

Q: What are the acoustic specifications of the AI-2429-TWT-R?

A: The AI-2429-TWT-R generates a single-tone output at 2.9kHz with a sound pressure level of 100dB measured at 12V and 10cm distance. The AI-550A does not provide frequency or SPL specifications.

Q: What is the current consumption of the AI-2429-TWT-R?

A: The AI-2429-TWT-R draws 8mA at rated voltage. The AI-550A does not specify current consumption.