SMT-13 Equivalent & Substitute Parts

Part Overview

The SMT-13 is an externally driven electromechanical magnetic buzzer manufactured by PUI Audio, Inc., designed for surface mount applications with solder pad termination. The component features a compact 12.5mm x 12.5mm footprint and 6.70mm maximum seated height. The SMT-13 is classified as obsolete, necessitating identification of active equivalent parts to maintain design continuity and ensure supply chain availability for new production and legacy system support.

Substiute Parts

SMT-13

PUI Audio, Inc.In Stock: 811SMT-13 Datasheet

Current PartRFQ

SMT-1324-TW-12V-R

PUI Audio, Inc.In Stock: 1257SMT-1324-TW-12V-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMT-1324-TW-12V-R qualifies as a direct substitute for the SMT-13 based on the following alignment of critical parameters:

Mechanical Compatibility:

• Identical footprint: 12.5mm x 12.5mm
• Compatible mounting type: Surface Mount
• Matching termination: Solder Pads
• Similar height profile: 7.20mm (SMT-1324-TW-12V-R) versus 6.70mm (SMT-13)

Functional Equivalence:

• Same technology platform: Electromechanical/Magnetic
• Identical driver circuitry: Transducer, Externally Driven
• Same series designation: SMT

Supply Chain Status:

• SMT-1324-TW-12V-R is Active (1173 pcs in stock) versus SMT-13 Obsolete status
• Both manufactured by PUI Audio, Inc.

The substitute part provides specified electrical performance (12V rated, 40mA supply current, 2.4kHz frequency, 85dB SPL @ 12V/10cm) enabling direct functional replacement in externally driven buzzer applications.

Parameter Comparison

Engineering Selection Recommendations

The SMT-1324-TW-12V-R is the appropriate substitute for the obsolete SMT-13 based on the following engineering criteria:

Product Status Alignment: The SMT-1324-TW-12V-R maintains Active status with confirmed inventory availability (1173 pcs), eliminating supply chain risk associated with the obsolete SMT-13.

Compliance Improvement: The substitute achieves ROHS3 compliance, addressing regulatory requirements for new production applications. Both parts maintain REACH Unaffected status and identical MSL ratings.

Mechanical Fit: Identical footprint and solder pad termination ensure direct PCB layout compatibility. The 0.50mm height differential (7.20mm versus 6.70mm) remains within typical surface mount assembly tolerances and does not impact board-level clearance in standard applications.

Functional Specification: The SMT-1324-TW-12V-R provides complete electrical characterization (12V rated operation, 40mA supply current, 2.4kHz frequency, 85dB SPL) enabling direct functional replacement in externally driven buzzer circuits.

Frequently Asked Questions (FAQ)

Q: Can the SMT-1324-TW-12V-R be used as a direct replacement for the SMT-13 without PCB modifications?

A: Yes. Both components share identical 12.5mm x 12.5mm footprints and solder pad termination. The 0.50mm height increase does not require PCB layout changes for standard applications.

Q: What is the primary reason for substituting the SMT-13?

A: The SMT-13 is classified as obsolete. The SMT-1324-TW-12V-R is an active equivalent from the same manufacturer and series, ensuring continued supply availability and design continuity.

Q: Are there compliance differences between these parts?

A: Yes. The SMT-1324-TW-12V-R achieves ROHS3 compliance, while the SMT-13 is RoHS non-compliant. Both maintain REACH Unaffected status. New production designs should specify the SMT-1324-TW-12V-R to meet current regulatory requirements.

Q: What electrical specifications should be considered when selecting the SMT-1324-TW-12V-R?

A: The substitute operates at 12V rated voltage with an 8–16V operating range, 40mA supply current, 2.4kHz frequency, and 85dB SPL at 12V measured 10cm from the component. Design circuits must accommodate these electrical parameters.

Q: Is the height difference between SMT-13 (6.70mm) and SMT-1324-TW-12V-R (7.20mm) significant?

A: The 0.50mm difference is within standard surface mount assembly tolerances. Verify clearance in applications with height-constrained enclosures or stacked component arrangements.

Q: What is the operating temperature range for the SMT-1324-TW-12V-R?

A: The substitute operates across -20°C to 85°C, suitable for industrial and consumer applications within this thermal envelope.