AI-431H Equivalent & Substitute Parts

Part Overview

The AI-431H is a piezo buzzer manufactured by PUI Audio, Inc., designed as an internally driven indicator with a 12V DC rated voltage and 2.8kHz operating frequency. The device features a 41.8mm flange-mounted design with wire lead termination for panel mount applications. This part is classified as obsolete, making identification of active equivalent models essential for ongoing production and maintenance applications.

Substiute Parts

AI-431H

PUI Audio, Inc.In Stock: 1162AI-431H Datasheet

Current PartRFQ

AI-4228-TF-LW140-C-R

PUI Audio, Inc.In Stock: 1223AI-4228-TF-LW140-C-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AI-4228-TF-LW140-C-R qualifies as a direct substitute for the AI-431H based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Manufacturer: PUI Audio, Inc. (same manufacturer ensures design compatibility)
• Driver Circuitry: Indicator, Internally Driven (identical functional architecture)
• Input Type: DC (same power input specification)
• Voltage - Rated: 12 V (primary operating voltage matches)
• Frequency: 2.8kHz (identical tone frequency)
• Technology: Piezo (same acoustic technology)
• Mounting Type: Panel Mount, Flange (identical mechanical interface)
• Termination: Wire Leads (same connection method)
• Size / Dimension: 1.646" Dia (41.80mm) (identical footprint)
• Series: AI (same product line)

The AI-4228-TF-LW140-C-R maintains functional and mechanical compatibility while offering enhanced specifications and active product status.

Parameter Comparison

Engineering Selection Recommendations

The AI-4228-TF-LW140-C-R is the appropriate substitute for the obsolete AI-431H. Selection is based on the following engineering criteria:

Product Status: The AI-431H is obsolete, while the AI-4228-TF-LW140-C-R maintains active product status with current manufacturing and inventory availability.

Compliance: The AI-4228-TF-LW140-C-R achieves ROHS3 compliance, whereas the AI-431H is RoHS non-compliant. This distinction is significant for applications subject to regulatory requirements.

Mechanical Compatibility: Both parts share identical mounting specifications (Panel Mount, Flange), footprint dimensions (41.80mm diameter), and termination method (Wire Leads), ensuring direct mechanical interchangeability in existing designs.

Electrical Compatibility: Both parts operate at 12V rated voltage with 2.8kHz frequency and utilize identical internally driven piezo technology, ensuring functional equivalence in DC-powered applications.

Enhanced Specifications: The AI-4228-TF-LW140-C-R provides documented electrical parameters (10mA supply current, 106dB SPL at 12V/10cm) and extended operating temperature range (-40°C to 65°C), offering greater design flexibility compared to the AI-431H.

Frequently Asked Questions (FAQ)

Q: Can the AI-4228-TF-LW140-C-R directly replace the AI-431H in existing applications?

A: Yes. Both parts share identical rated voltage (12V), frequency (2.8kHz), mounting type (Panel Mount, Flange), termination method (Wire Leads), and physical footprint (41.80mm diameter). The mechanical and electrical interfaces are fully compatible.

Q: What is the height difference between these parts?

A: The AI-431H has a maximum seated height of 0.630" (16.00mm), while the AI-4228-TF-LW140-C-R measures 0.650" (16.50mm). This 0.020" (0.50mm) difference is negligible for most panel mount applications and does not affect functional compatibility.

Q: Does the AI-4228-TF-LW140-C-R meet RoHS requirements?

A: Yes. The AI-4228-TF-LW140-C-R is ROHS3 compliant, whereas the AI-431H is RoHS non-compliant. This makes the substitute part suitable for applications requiring regulatory compliance.

Q: What is the operating temperature range for the AI-4228-TF-LW140-C-R?

A: The AI-4228-TF-LW140-C-R operates across -40°C to 65°C. The AI-431H does not specify an operating temperature range.

Q: Are both parts from the same manufacturer?

A: Yes. Both the AI-431H and AI-4228-TF-LW140-C-R are manufactured by PUI Audio, Inc., ensuring design consistency and compatibility within the same product line.

Q: What is the supply current requirement for the AI-4228-TF-LW140-C-R?

A: The AI-4228-TF-LW140-C-R requires 10mA supply current at rated voltage. The AI-431H does not specify supply current.