AT-173 Equivalent & Substitute Parts

Part Overview

The AT-173 is a piezoelectric buzzer transducer manufactured by PUI Audio, Inc., designed as an externally driven panel mount component with a 32mm flange and wire lead termination. Operating at 3.7kHz, this device is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. The obsolete status necessitates sourcing alternative components that maintain functional and mechanical compatibility with existing applications.

Substiute Parts

AT-173

PUI Audio, Inc.In Stock: 1082AT-173 Datasheet

Current PartRFQ

AT-3237-TF-LW140-R

PUI Audio, Inc.In Stock: 2533AT-3237-TF-LW140-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT-3237-TF-LW140-R qualifies as a direct substitute for the AT-173 based on the following alignment of critical parameters:

• Manufacturer: Both components are manufactured by PUI Audio, Inc., ensuring design consistency and quality standards
• Series: Both belong to the AT series
• Technology: Both utilize piezoelectric transducer technology with external drive capability
• Frequency: Both operate at 3.7kHz, maintaining acoustic compatibility
• Mounting Type: Both feature panel mount configuration with flange design
• Termination: Both use wire lead termination
• Size / Dimension: Both share identical 32mm diameter (1.260" Dia)
• Height - Seated (Max): AT-3237-TF-LW140-R height of 0.551" (14.00mm) is within acceptable mechanical tolerance relative to AT-173's 0.532" (14.60mm)

The AT-3237-TF-LW140-R represents an active product with enhanced specifications, including rated voltage (12V), operational voltage range (3~28V), sound pressure level (98dB @ 12V, 10cm), and RoHS3 compliance, making it suitable for modern applications requiring regulatory adherence.

Parameter Comparison

Engineering Selection Recommendations

The AT-3237-TF-LW140-R is the appropriate substitute for the obsolete AT-173 based on product lifecycle and regulatory compliance considerations:

• Product Status Transition: The AT-173's obsolete classification makes the active AT-3237-TF-LW140-R the current production equivalent within the PUI Audio AT series
• Regulatory Compliance: The AT-3237-TF-LW140-R meets ROHS3 compliance requirements, whereas the AT-173 is RoHS non-compliant, making the substitute suitable for applications subject to modern environmental regulations
• Mechanical Compatibility: Identical 32mm diameter and flange mounting design ensure direct mechanical fit in existing panel mount applications
• Functional Equivalence: Matching 3.7kHz frequency and externally driven piezo transducer architecture maintain acoustic and electrical compatibility
• Mechanical Tolerance: The 0.019" (0.50mm) height difference between components falls within standard mechanical tolerances for panel mount applications

Frequently Asked Questions (FAQ)

Q: Can the AT-3237-TF-LW140-R directly replace the AT-173 in existing designs?

A: Yes. Both components share identical mounting type (panel mount, flange), termination (wire leads), diameter (32mm), and operating frequency (3.7kHz). The 0.019" height difference is within acceptable mechanical tolerance for panel mount applications.

Q: What is the primary reason for substitution?

A: The AT-173 is classified as obsolete. The AT-3237-TF-LW140-R is the active equivalent from PUI Audio, Inc., ensuring continued component availability and supply chain reliability.

Q: Are there electrical compatibility considerations?

A: The AT-3237-TF-LW140-R operates at a rated voltage of 12V with a voltage range of 3~28V. The AT-173 does not specify voltage parameters. Applications must confirm that the substitute's voltage specifications align with existing driver circuitry.

Q: Does the AT-3237-TF-LW140-R meet regulatory requirements?

A: Yes. The AT-3237-TF-LW140-R is ROHS3 compliant, whereas the AT-173 is RoHS non-compliant. This makes the substitute suitable for applications subject to RoHS regulations.

Q: Are there performance differences?

A: The AT-3237-TF-LW140-R provides specified performance metrics including 98dB SPL @ 12V, 10cm and 7mA supply current. The AT-173 does not specify these parameters. Both operate at 3.7kHz with externally driven piezo transducer technology.

Q: What is the packaging difference?

A: The AT-173 packaging is listed as "-" (not specified). The AT-3237-TF-LW140-R is supplied in Bulk packaging.