SMT-12 Equivalent & Substitute Parts

Part Overview

The SMT-12 is an externally driven electromechanical magnetic buzzer manufactured by PUI Audio, Inc., designed for surface mount applications with solder pad termination. The component measures 12.5mm x 12.5mm and is classified as obsolete product status. Due to its obsolete classification, identifying functionally equivalent active alternatives is essential for ongoing design support and procurement continuity.

Substiute Parts

SMT-12

PUI Audio, Inc.In Stock: 1125SMT-12 Datasheet

Current PartRFQ

SMT-1324-TW-5V-R

PUI Audio, Inc.In Stock: 949SMT-1324-TW-5V-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMT-1324-TW-5V-R qualifies as a direct substitute for the SMT-12 based on the following alignment of critical parameters:

• Manufacturer: Both parts are manufactured by PUI Audio, Inc., ensuring design consistency and reliability standards
• Technology: Both utilize electromechanical/magnetic transducer technology
• Driver Circuitry: Both employ externally driven transducer architecture
• Mounting Type: Both are surface mount components
• Termination: Both use solder pad termination
• Physical Footprint: Both share identical 12.50mm x 12.50mm dimensions, enabling direct PCB layout compatibility
• Moisture Sensitivity: Both are classified as MSL 1 (Unlimited)

The SMT-1324-TW-5V-R represents an active product with enhanced specifications including rated voltage (5V), defined frequency (2.4kHz), and sound pressure level (85dB @ 5V, 10cm), making it suitable for applications requiring the SMT-12's form factor and mounting characteristics.

Parameter Comparison

Engineering Selection Recommendations

The SMT-1324-TW-5V-R is the designated substitute for the obsolete SMT-12. Selection of this alternative is supported by:

• Product Status Alignment: The SMT-1324-TW-5V-R maintains active product status, ensuring long-term availability and manufacturing support
• Compliance Enhancement: The substitute achieves ROHS3 compliance, addressing regulatory requirements that may not have applied to the original SMT-12
• Form Factor Compatibility: Identical 12.50mm x 12.50mm footprint and solder pad termination enable direct PCB integration without layout modifications
• Functional Equivalence: Both components employ identical externally driven electromechanical/magnetic transducer technology and surface mount architecture
• Minimal Height Variance: The height difference of 0.50mm (6.70mm to 7.20mm) remains within typical PCB assembly tolerances for surface mount applications

Frequently Asked Questions (FAQ)

Q: Can the SMT-1324-TW-5V-R be used as a direct replacement for the SMT-12 on existing PCBs?

A: Yes. Both components share identical 12.50mm x 12.50mm footprints and solder pad termination. The height increase of 0.50mm is within standard surface mount assembly tolerances and does not require PCB redesign.

Q: What are the key differences between the SMT-12 and SMT-1324-TW-5V-R?

A: The primary differences are product status (obsolete vs. active), RoHS compliance (non-compliant vs. ROHS3 compliant), and specified electrical parameters. The SMT-1324-TW-5V-R provides defined voltage rating (5V), frequency (2.4kHz), current draw (40mA), and sound pressure level (85dB @ 5V, 10cm), whereas the SMT-12 specifications are not detailed in available documentation.

Q: Are both components manufactured by the same company?

A: Yes. Both the SMT-12 and SMT-1324-TW-5V-R are manufactured by PUI Audio, Inc., ensuring consistent design standards and quality control.

Q: What is the operating voltage range for the substitute part?

A: The SMT-1324-TW-5V-R operates within a voltage range of 4V to 8V, with a rated voltage of 5V.

Q: Does the substitute part meet current environmental compliance standards?

A: Yes. The SMT-1324-TW-5V-R is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.