AI-256 Equivalent & Substitute Parts

Part Overview

The AI-256 is a through-hole piezo buzzer manufactured by PUI Audio, Inc., rated for 12V DC operation with internally driven indicator circuitry. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The AI-256 series utilizes PC pin termination for direct PCB mounting and is designed for applications requiring audible indication in electronic systems.

Substiute Parts

AI-256

PUI Audio, Inc.In Stock: 922AI-256 Datasheet

Current PartRFQ

AI-2331-TWT-R

PUI Audio, Inc.In Stock: 1818AI-2331-TWT-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the AI-256 is based on the following critical parameters that must remain consistent:

• Manufacturer: PUI Audio, Inc. (same manufacturer ensures design continuity)
• Series: AI (maintains product line compatibility)
• Voltage - Rated: 12 V (electrical compatibility with existing circuit design)
• Technology: Piezo (functional equivalence for audible indication)
• Driver Circuitry: Indicator, Internally Driven (no external driver required)
• Input Type: DC (power supply compatibility)
• Mounting Type: Through Hole (PCB assembly compatibility)
• Termination: PC Pins (connector compatibility)

The substitute part AI-2331-TWT-R meets all these criteria while offering active product status and improved specifications including defined frequency response, sound pressure level, current consumption, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The AI-2331-TWT-R is the direct substitute for the obsolete AI-256. Selection is based on the following engineering factors:

Product Status: The AI-256 is obsolete, creating supply chain risk. The AI-2331-TWT-R maintains active product status with confirmed inventory availability (1735 pcs in stock versus 892 pcs for the obsolete part).

Compliance: The AI-2331-TWT-R achieves ROHS3 compliance, whereas the AI-256 is RoHS non-compliant. For new designs or compliance-driven applications, the substitute part is required.

Electrical Compatibility: Both parts operate at 12V rated voltage with DC input and internally driven indicator circuitry. The AI-2331-TWT-R specifies an extended voltage range (3 ~ 20V), providing greater design flexibility without compromising 12V operation.

Physical Compatibility: Both parts use through-hole mounting with PC pin termination, ensuring direct PCB assembly compatibility. The AI-2331-TWT-R provides defined dimensional specifications (23.40mm diameter, 10.20mm height), enabling precise board layout planning.

Functional Specifications: The AI-2331-TWT-R defines operating parameters (3.1kHz frequency, 85dB SPL at 12V/10cm, 15mA supply current, -20°C ~ 60°C operating range) that were not specified for the AI-256, supporting comprehensive circuit design validation.

Frequently Asked Questions (FAQ)

Q: Can the AI-2331-TWT-R directly replace the AI-256 in existing designs?

A: Yes. Both parts share identical core specifications: 12V rated voltage, DC input, piezo technology, internally driven indicator circuitry, through-hole mounting, and PC pin termination. Direct PCB substitution is supported without circuit modification.

Q: What are the key differences between these parts?

A: The AI-2331-TWT-R is an active product with fully specified electrical and thermal parameters, whereas the AI-256 is obsolete with limited specification data. The substitute provides defined frequency (3.1kHz), sound pressure level (85dB @ 12V, 10cm), current consumption (15mA), operating temperature range (-20°C ~ 60°C), and physical dimensions. The AI-2331-TWT-R also achieves ROHS3 compliance.

Q: Are there packaging differences?

A: The AI-256 packaging is not specified in available documentation. The AI-2331-TWT-R is supplied in tray packaging. Verify tray packaging compatibility with your assembly process before procurement.

Q: Does the extended voltage range of the AI-2331-TWT-R (3 ~ 20V) affect 12V operation?

A: No. The 12V rated voltage specification remains the same for both parts. The extended range indicates the AI-2331-TWT-R can operate safely across 3 ~ 20V without performance degradation at the 12V design point.

Q: What is the inventory status for these parts?

A: The AI-256 (obsolete) has 892 pcs in stock. The AI-2331-TWT-R (active) has 1735 pcs in stock, providing greater procurement security for ongoing production.

Q: Is RoHS compliance a factor in substitution?

A: For new designs or applications subject to RoHS regulations, the AI-2331-TWT-R (ROHS3 compliant) is required. The AI-256 (RoHS non-compliant) may only be used in legacy systems or applications without compliance requirements.