AT-202 Equivalent & Substitute Parts

Part Overview

The AT-202 is an externally driven electromechanical magnetic buzzer manufactured by PUI Audio, Inc., operating at a fixed frequency of 2.048kHz. This component is classified as obsolete, with 816 units currently in stock. Due to its obsolete status, identifying compatible substitute parts is essential for ongoing system design, maintenance, and production continuity. The AT-202 requires external driver circuitry and is mounted through holes with PC pin termination.

Substiute Parts

AT-202

PUI Audio, Inc.In Stock: 849AT-202 Datasheet

Current PartRFQ

AT-1820-TWT-6V-R

PUI Audio, Inc.In Stock: 2342AT-1820-TWT-6V-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT-1820-TWT-6V-R qualifies as a direct substitute for the AT-202 based on the following alignment of critical parameters:

• Same manufacturer (PUI Audio, Inc.) and series (AT)
• Identical driver circuitry classification (Transducer, Externally Driven)
• Identical operating frequency (2.048kHz)
• Identical technology platform (Electromechanical/Magnetic)
• Identical mounting configuration (Through Hole with PC Pins)
• Same ECCN and HTSUS classifications

The AT-1820-TWT-6V-R is an active product with enhanced specifications including rated voltage (6V), current supply (40mA), sound pressure level (85dB @ 6V, 10cm), and defined operating temperature range (-20°C ~ 80°C). These additions represent functional improvements while maintaining core compatibility with the AT-202's electrical and mechanical interface requirements.

Parameter Comparison

Engineering Selection Recommendations

The AT-1820-TWT-6V-R is the designated substitute for the obsolete AT-202. Selection of this part is supported by:

• Active product status ensuring long-term availability and supply chain stability
• ROHS3 compliance, addressing regulatory requirements not met by the AT-202
• Identical core electrical and mechanical interface specifications
• Documented electrical performance parameters (voltage, current, SPL) enabling precise circuit design
• Defined operating temperature range supporting environmental qualification
• Same ECCN and HTSUS classifications maintaining export and tariff compliance

The AT-1820-TWT-6V-R maintains backward compatibility with existing AT-202 circuit designs while providing enhanced compliance and performance documentation.

Frequently Asked Questions (FAQ)

Q: Can the AT-1820-TWT-6V-R directly replace the AT-202 in existing designs?

A: Yes. Both components share identical driver circuitry classification, frequency (2.048kHz), technology (Electromechanical/Magnetic), mounting type (Through Hole), and termination (PC Pins). The AT-1820-TWT-6V-R is electrically and mechanically compatible with AT-202 circuit interfaces.

Q: What is the primary reason to transition from AT-202 to AT-1820-TWT-6V-R?

A: The AT-202 is obsolete. The AT-1820-TWT-6V-R is an active product with documented specifications and ROHS3 compliance, ensuring supply availability and regulatory alignment.

Q: Are there differences in physical dimensions between these parts?

A: The AT-202 dimensions are not specified in available documentation. The AT-1820-TWT-6V-R measures 18.00mm x 14.00mm with a seated height of 10.70mm. Physical verification is required if space constraints exist in legacy designs.

Q: Does the AT-1820-TWT-6V-R require different driver circuitry than the AT-202?

A: No. Both components are classified as externally driven transducers requiring identical driver circuit topology. The AT-1820-TWT-6V-R specifies a 6V rated voltage with a 3 ~ 10V operating range, enabling flexible power supply design.

Q: What is the packaging difference?

A: The AT-202 packaging is not specified. The AT-1820-TWT-6V-R is supplied in Tray packaging. Confirm packaging requirements for your procurement and assembly processes.

Q: Is the AT-1820-TWT-6V-R RoHS compliant?

A: Yes. The AT-1820-TWT-6V-R is ROHS3 compliant, whereas the AT-202 is RoHS non-compliant. This compliance improvement supports modern regulatory requirements.