AT-201 Equivalent & Substitute Parts

Part Overview

The AT-201 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 716 units currently available in inventory. Due to its obsolete status, identifying compatible substitute parts is essential for ongoing system design, maintenance, and production continuity. The AT-201 serves as a transducer in applications requiring through-hole mounting with PC pin termination.

Substiute Parts

AT-201

PUI Audio, Inc.In Stock: 787AT-201 Datasheet

Current PartRFQ

AT-1820-TWT-1V-R

PUI Audio, Inc.In Stock: 1272AT-1820-TWT-1V-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AT-1820-TWT-1V-R qualifies as a direct substitute for the AT-201 based on the following alignment of critical parameters:

• Same manufacturer (PUI Audio, Inc.) and series (AT)
• Identical technology classification (Electromechanical/Magnetic)
• Identical driver circuitry (Transducer, Externally Driven)
• Identical operating frequency (2.048kHz)
• Identical mounting type (Through Hole)
• Identical termination method (PC Pins)
• Active product status with current inventory availability

The AT-1820-TWT-1V-R provides enhanced specifications including rated voltage (1.5V), defined current consumption (40mA), measurable sound pressure level (85dB @ 1.5V, 10cm), and RoHS3 compliance, making it suitable for applications requiring modern regulatory adherence.

Parameter Comparison

Engineering Selection Recommendations

The AT-1820-TWT-1V-R is the designated substitute for the obsolete AT-201. Selection of this substitute is justified by:

• Functional equivalence across all core operating parameters (frequency, technology, driver type, mounting, and termination)
• Active product status ensuring long-term availability and supply chain reliability
• ROHS3 compliance, meeting current environmental and regulatory requirements
• Defined electrical and acoustic specifications enabling precise system design
• Same manufacturer and series lineage, ensuring design continuity

For applications currently using the AT-201, transition to the AT-1820-TWT-1V-R requires verification that the system design accommodates the specified voltage range (1 ~ 2V) and current consumption (40mA). The substitute's enhanced specifications do not introduce incompatibility with existing through-hole PCB layouts or PC pin termination requirements.

Frequently Asked Questions (FAQ)

Q: Can the AT-1820-TWT-1V-R directly replace the AT-201 in existing designs?

A: Yes. Both components share identical mounting type (Through Hole), termination method (PC Pins), operating frequency (2.048kHz), and technology classification (Electromechanical/Magnetic). The substitute's defined voltage range (1 ~ 2V) and current specification (40mA) must be accommodated by the system's driver circuitry.

Q: What is the primary reason for substituting the AT-201?

A: The AT-201 is classified as obsolete. The AT-1820-TWT-1V-R is an active product with current manufacturing and inventory availability, ensuring supply chain continuity and long-term component sourcing.

Q: Are there compliance differences between these parts?

A: Yes. The AT-201 is RoHS non-compliant, while the AT-1820-TWT-1V-R is ROHS3 compliant. For applications subject to RoHS regulations, the AT-1820-TWT-1V-R is the required choice.

Q: What packaging is available for the substitute part?

A: The AT-1820-TWT-1V-R is supplied in Tray packaging. Verify that this packaging format is compatible with your procurement and assembly processes.

Q: Are the physical dimensions compatible?

A: The AT-1820-TWT-1V-R has defined dimensions (18.00mm x 14.00mm, height 10.70mm). The AT-201 dimensions are not specified in available documentation. Confirm that the substitute's physical footprint accommodates your PCB layout and mechanical enclosure design.

Q: What is the operating temperature range for the substitute?

A: The AT-1820-TWT-1V-R operates across -20°C to 80°C. Verify this range meets your application's thermal requirements.