AI-381 Piezo Buzzer 12V 43MM Panel Mount - Equivalent & Substitute Parts

Part Overview

The AI-381 is a piezo buzzer indicator designed for 12V DC applications with a 2.9kHz operating frequency and 43mm panel mount form factor. This component features internally driven circuitry with screw terminal and quick connect tab termination. The AI-381 is classified as obsolete product status, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

AI-381

PUI Audio, Inc.In Stock: 1116AI-381 Datasheet

Current PartRFQ

AI-4329-P-FP28-R

PUI Audio, Inc.In Stock: 1092AI-4329-P-FP28-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AI-4329-P-FP28-R qualifies as a direct substitute for the AI-381 based on the following critical parameters:

Matching Parameters:

• Manufacturer: PUI Audio, Inc. (same manufacturer, AI series)
• Voltage - Rated: 12 V (identical rated voltage)
• Frequency: 2.9kHz (identical operating frequency)
• Technology: Piezo (same technology platform)
• Driver Circuitry: Indicator, Internally Driven (identical driver configuration)
• Input Type: DC (same input specification)
• Mounting Type: Panel Mount (identical mounting method)
• Termination: Screw Terminal, Quick Connect Tab - 0.256" (6.50mm) (identical termination)
• Size / Dimension: 1.693" Dia (43.00mm) (identical diameter)

The AI-4329-P-FP28-R maintains mechanical and electrical compatibility with the AI-381 while offering enhanced specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The AI-4329-P-FP28-R is the qualified substitute for the obsolete AI-381. Selection is based on the following engineering criteria:

Product Status: The AI-381 is obsolete, creating supply chain risk. The AI-4329-P-FP28-R maintains active product status with documented inventory availability.

Compliance: The AI-4329-P-FP28-R achieves ROHS3 compliance, whereas the AI-381 is RoHS non-compliant. This compliance improvement aligns with current regulatory requirements for electronic components.

Electrical Compatibility: Both components operate at 12V rated voltage with identical 2.9kHz frequency and internally driven piezo technology. The AI-4329-P-FP28-R provides extended voltage range capability (6 ~ 28V) without compromising 12V operation.

Mechanical Compatibility: Identical mounting type, termination style, and primary dimensions (43mm diameter) ensure direct mechanical fit in existing panel mount applications. Height difference of 0.020" (0.50mm) is within typical mechanical tolerance for panel mount installations.

Frequently Asked Questions (FAQ)

Q: Can the AI-4329-P-FP28-R directly replace the AI-381 in existing designs?

A: Yes. Both components share identical rated voltage (12V), frequency (2.9kHz), mounting type (panel mount), termination configuration (screw terminal with quick connect tab), and primary dimensions (43mm diameter). The 0.020" height difference is negligible for panel mount applications.

Q: What are the key differences between these components?

A: The AI-4329-P-FP28-R provides enhanced specifications including active product status, ROHS3 compliance, documented operating temperature range (-20°C ~ 60°C), specified current draw (6mA), and extended voltage range (6 ~ 28V). The AI-381 specifications for these parameters were not documented.

Q: Is the AI-4329-P-FP28-R suitable for applications requiring the AI-381?

A: Yes. The substitute maintains all critical electrical and mechanical parameters required for AI-381 functionality. The enhanced specifications of the AI-4329-P-FP28-R provide additional design flexibility and regulatory compliance.

Q: What is the packaging difference?

A: The AI-381 packaging specification was not provided. The AI-4329-P-FP28-R is supplied in tray packaging. Confirm packaging requirements with your procurement process.

Q: Are there any voltage compatibility concerns?

A: No. Both components are rated for 12V DC operation. The AI-4329-P-FP28-R supports extended voltage range (6 ~ 28V), providing additional operational flexibility while maintaining full compatibility at 12V.