AI-550HS Equivalent & Substitute Parts

Part Overview

The AI-550HS 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, indicating it is no longer in active production. Due to its obsolete status, identifying functionally equivalent substitute parts is essential for ongoing system maintenance, redesign efforts, and procurement continuity. The substitute part identified maintains core electrical and mechanical compatibility while offering active product status and enhanced specifications.

Substiute Parts

AI-550HS

PUI Audio, Inc.In Stock: 1125AI-550HS Datasheet

Current PartRFQ

AI-2429-TWT-2-R

PUI Audio, Inc.In Stock: 1311AI-2429-TWT-2-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AI-2429-TWT-2-R qualifies as a direct substitute for the AI-550HS based on the following alignment of critical parameters:

Electrical Compatibility:

• Identical rated voltage: 12V DC
• Same driver circuitry classification: Indicator, Internally Driven
• Identical input type: DC
• Same manufacturer: PUI Audio, Inc.
• Same series family: AI

Mechanical Compatibility:

• Identical mounting type: Through Hole
• Identical termination style: PC Pins
• Same technology platform: Piezo

Substitution Logic: The AI-2429-TWT-2-R maintains full electrical and mechanical compatibility with the AI-550HS. Both components operate at 12V DC with internally driven piezo technology and identical through-hole PC pin termination. The substitute part is from the same manufacturer and series, ensuring design consistency. The AI-2429-TWT-2-R is currently in active production status, providing supply continuity for the obsolete AI-550HS.

Parameter Comparison

Engineering Selection Recommendations

The AI-2429-TWT-2-R is the appropriate substitute for the obsolete AI-550HS based on the following engineering criteria:

Product Status & Supply Continuity: The AI-550HS is obsolete and no longer manufactured. The AI-2429-TWT-2-R is in active production status, ensuring long-term component availability and supply chain reliability.

Electrical & Mechanical Equivalence: Both components share identical rated voltage (12V DC), driver circuitry (internally driven indicator), input type (DC), mounting type (through hole), and termination style (PC Pins). This equivalence ensures direct functional replacement without circuit redesign.

Compliance Improvement: The AI-2429-TWT-2-R achieves ROHS3 compliance, whereas the AI-550HS is RoHS non-compliant. For applications subject to RoHS regulations, the substitute part provides regulatory alignment.

Enhanced Specifications: The substitute part provides documented specifications including operating temperature range (-30°C ~ 85°C), supply current (10mA), frequency (2.9kHz), and sound pressure level (95dB @ 12V, 10cm), enabling more precise system design and validation.

Frequently Asked Questions (FAQ)

Q: Can the AI-2429-TWT-2-R directly replace the AI-550HS without circuit modification?

A: Yes. Both components operate at 12V DC with identical internally driven piezo technology, through-hole mounting, and PC pin termination. Direct substitution is electrically and mechanically compatible.

Q: What is the primary reason for substitution?

A: The AI-550HS is obsolete and no longer manufactured. The AI-2429-TWT-2-R is an active product from the same manufacturer and series, providing supply continuity.

Q: Are there any compliance differences between these parts?

A: Yes. The AI-550HS is RoHS non-compliant, while the AI-2429-TWT-2-R is ROHS3 compliant. For applications requiring RoHS compliance, the substitute part is the appropriate choice.

Q: What are the physical dimensions of the substitute part?

A: The AI-2429-TWT-2-R has a diameter of 0.945 inches (24.00mm) and a maximum seated height of 0.650 inches (16.50mm). Verify that these dimensions are compatible with your PCB layout and enclosure design.

Q: What is the operating temperature range of the substitute part?

A: The AI-2429-TWT-2-R operates from -30°C to 85°C. Confirm this range meets your application requirements.

Q: What is the supply current requirement of the substitute part?

A: The AI-2429-TWT-2-R draws 10mA at rated voltage. Ensure your circuit design accommodates this current draw.

Q: Does the substitute part support the same voltage range as the original?

A: The AI-2429-TWT-2-R supports an operating voltage range of 8V to 18V, providing greater flexibility than the original part's fixed 12V rating. This extended range is compatible with 12V nominal designs.