AT-40 Equivalent & Substitute Parts

Part Overview

The AT-40 is a 100 Ohm general purpose speaker manufactured by PUI Audio, Inc., rated for 150 mW continuous power operation. This speaker features a round top-mounted port configuration with a polyester cone and neodymium-iron-boron magnet, operating across a 500 Hz to 20 kHz frequency range. The AT-40 is classified as obsolete, making identification of compatible substitute components essential for ongoing system support and new design implementations where this specification remains applicable.

Substiute Parts

AT-40

PUI Audio, Inc.In Stock: 1150AT-40 Datasheet

Current PartRFQ

AST-030C0MR-R

PUI Audio, Inc.In Stock: 1093AST-030C0MR-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AST-030C0MR-R qualifies as a direct substitute for the AT-40 based on the following critical parameters:

• Impedance Match: Both parts operate at 100 Ohms, ensuring electrical compatibility with existing circuit designs
• Power Rating Compatibility: Both rated for 150 mW continuous operation, maintaining thermal and acoustic performance within design specifications
• Physical Configuration: Both feature round shape with top-mounted port location and PC pin termination, enabling mechanical and electrical interchangeability
• Material Consistency: Both utilize polyester PET cone material and Nd-Fe-B magnet technology, preserving acoustic characteristics
• Technology Class: Both classified as magnetic general purpose speakers, confirming functional equivalence

The AST-030C0MR-R represents an active product with enhanced specifications in maximum power handling (300 mW versus 200 mW) and improved efficiency rating (80 dBA versus 73 dBA), while maintaining all critical substitution parameters.

Parameter Comparison

Engineering Selection Recommendations

The AST-030C0MR-R is the qualified substitute for the obsolete AT-40 speaker. Selection between these parts depends on regulatory and compliance requirements:

For new designs and systems requiring current compliance standards: The AST-030C0MR-R is the appropriate choice. This part carries ROHS3 compliance certification, whereas the AT-40 is RoHS non-compliant. Both parts maintain REACH Unaffected status and share identical ECCN and HTSUS classifications.

For legacy system maintenance: The AT-40 remains available with 1114 units in stock. The AST-030C0MR-R provides enhanced performance characteristics with 300 mW maximum power capability and 80 dBA efficiency rating, compared to the AT-40's 200 mW maximum and 73 dBA rating, while maintaining identical rated power and impedance specifications.

Physical compatibility: Dimensional variations are minimal. The AST-030C0MR-R diameter is 0.006" smaller (29.70 mm versus 29.85 mm) and height is 0.008" taller (12.70 mm versus 12.50 mm), presenting negligible impact on mechanical mounting in standard applications.

Frequently Asked Questions (FAQ)

Q: Can the AST-030C0MR-R directly replace the AT-40 in existing circuits?

A: Yes. Both parts share identical impedance (100 Ohms) and rated power (150 mW), ensuring electrical compatibility. PC pin termination and round top-mounted port configuration are identical, enabling direct mechanical substitution.

Q: What are the key differences between these parts?

A: The AST-030C0MR-R offers enhanced maximum power handling (300 mW versus 200 mW) and higher efficiency (80 dBA versus 73 dBA). The frequency response differs: AT-40 operates 500 Hz to 20 kHz, while AST-030C0MR-R operates 1.2 kHz to 10 kHz. The AST-030C0MR-R carries ROHS3 compliance; the AT-40 does not.

Q: Are there frequency response considerations for substitution?

A: The AT-40 provides extended low-frequency response (500 Hz versus 1.2 kHz) and extended high-frequency response (20 kHz versus 10 kHz). Applications requiring the full AT-40 frequency range should evaluate whether the AST-030C0MR-R's narrower bandwidth (1.2 kHz to 10 kHz) meets system requirements.

Q: What is the packaging difference?

A: The AT-40 is supplied in standard packaging. The AST-030C0MR-R is supplied in Tray packaging, which may affect handling and storage procedures but does not impact electrical or mechanical performance.

Q: Are both parts available for procurement?

A: The AT-40 (obsolete status) has 1114 units in stock. The AST-030C0MR-R (active status) has 1022 units in stock. Availability should be confirmed with the supplier for current procurement timelines.

Q: Do regulatory certifications affect part selection?

A: The AST-030C0MR-R carries ROHS3 compliance certification, making it suitable for applications subject to RoHS regulations. The AT-40 is RoHS non-compliant. Both parts are REACH Unaffected and share identical ECCN and HTSUS classifications.