AT-03 Equivalent & Substitute Parts

Part Overview

The AT-03 is an externally driven electromechanical magnetic buzzer transducer manufactured by PUI Audio, Inc., designed for through-hole PC pin mounting applications. Operating at a fixed frequency of 2.048kHz, this component is classified as obsolete and no longer in active production. Due to its obsolete status, identifying compatible substitute parts is essential for ongoing system maintenance, redesigns, and new production requirements where equivalent functionality is needed.

Substiute Parts

AT-03

PUI Audio, Inc.In Stock: 830AT-03 Datasheet

Current PartRFQ

AT-1620-TWT-12V-R

PUI Audio, Inc.In Stock: 1851AT-1620-TWT-12V-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT-1620-TWT-12V-R qualifies as a direct substitute for the AT-03 based on the following alignment of critical parameters:

• Driver Circuitry: Both components are externally driven transducers
• Frequency: Both operate at 2.048kHz
• Technology: Both utilize electromechanical/magnetic technology
• Mounting Type: Both feature through-hole mounting
• Termination: Both use PC pins for connection
• Series: Both belong to the PUI Audio AT series
• Manufacturer: Both are manufactured by PUI Audio, Inc.

The AT-1620-TWT-12V-R represents an active production alternative with enhanced specifications including rated voltage (12V), defined current consumption (40mA), measurable sound pressure level (85dB @ 12V, 10cm), and extended operating temperature range (-40°C ~ 85°C).

Parameter Comparison

Engineering Selection Recommendations

The AT-1620-TWT-12V-R is the designated substitute for the obsolete AT-03. Selection of this substitute is supported by:

• Functional Equivalence: Identical driver circuitry, frequency, technology, and mounting configuration ensure direct functional replacement
• Active Production Status: The AT-1620-TWT-12V-R is in active production, ensuring long-term availability and supply chain reliability
• Compliance Enhancement: The substitute achieves ROHS3 compliance, addressing modern regulatory requirements that the original AT-03 does not meet
• Specified Performance Parameters: The substitute provides defined electrical and acoustic specifications (12V rated, 40mA supply current, 85dB SPL), enabling precise system design validation
• Extended Operating Range: Operating temperature specification of -40°C ~ 85°C supports broader application environments

Frequently Asked Questions (FAQ)

Q: Can the AT-1620-TWT-12V-R directly replace the AT-03 in existing designs?

A: Yes. Both components share identical driver circuitry, frequency, technology, mounting type, and termination. The AT-1620-TWT-12V-R is designed as the active production equivalent for the obsolete AT-03.

Q: What are the key differences between AT-03 and AT-1620-TWT-12V-R?

A: The AT-03 specifications are largely unspecified in available documentation. The AT-1620-TWT-12V-R provides defined electrical parameters (12V rated voltage, 9-15V operating range, 40mA supply current), acoustic output (85dB @ 12V, 10cm), operating temperature range (-40°C ~ 85°C), and achieves ROHS3 compliance. The substitute also specifies physical dimensions (16mm diameter, 14.20mm seated height) and packaging (Tray).

Q: Are there any compatibility concerns with through-hole mounting?

A: Both components use through-hole PC pin termination. Physical dimensions of the AT-1620-TWT-12V-R (0.630" diameter, 0.559" seated height) should be verified against PCB layout requirements to ensure mechanical fit.

Q: Does the AT-1620-TWT-12V-R require different driver circuitry?

A: No. Both components are externally driven transducers requiring identical driver circuit topology. The AT-1620-TWT-12V-R operates at 12V rated with a 9-15V acceptable range and 40mA supply current.

Q: What is the significance of ROHS3 compliance on the AT-1620-TWT-12V-R?

A: ROHS3 compliance indicates the substitute meets current European Union Restriction of Hazardous Substances regulations. The original AT-03 is RoHS non-compliant, making the AT-1620-TWT-12V-R necessary for applications subject to modern regulatory requirements.