SMT-05 Equivalent & Substitute Parts

Part Overview

The SMT-05 is a magnetic buzzer transducer manufactured by PUI Audio, Inc., designed as an externally driven electromechanical component operating at 2.7kHz. This surface mount device features solder pad termination and measures 11.00mm x 14.20mm with a seated height of 3.40mm. The SMT-05 is classified as obsolete, necessitating identification of active equivalent components for new designs and production continuity.

Substiute Parts

SMT-05

PUI Audio, Inc.In Stock: 751SMT-05 Datasheet

Current PartRFQ

SMT-1427-S-R

PUI Audio, Inc.In Stock: 1444SMT-1427-S-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMT-1427-S-R qualifies as a direct substitute for the SMT-05 based on the following alignment of critical parameters:

• Identical manufacturer (PUI Audio, Inc.) and series designation (SMT)
• Matching technology classification (Electromechanical/Magnetic)
• Identical driver circuitry type (Transducer, Externally Driven)
• Identical operating frequency (2.7kHz)
• Identical mounting type (Surface Mount) and termination method (Solder Pads)
• Identical footprint dimensions (11.00mm x 14.20mm)
• Compatible seated height (3.90mm vs. 3.40mm maximum)
• Identical MSL rating (1 - Unlimited)

The SMT-1427-S-R provides specified electrical performance parameters (5V rated, 80mA supply current, 85dB SPL @ 5V/10cm) and operates across a defined voltage range (3V to 7V) with single-tone operating mode. The substitute maintains mechanical and electrical compatibility while offering active product status and improved compliance posture.

Parameter Comparison

Engineering Selection Recommendations

The SMT-1427-S-R is the appropriate substitute for the obsolete SMT-05 based on product lifecycle and compliance considerations. The substitute maintains identical mechanical compatibility and core functional parameters while offering active product status, ensuring long-term supply chain viability and manufacturing support.

The SMT-1427-S-R achieves ROHS3 compliance, addressing regulatory requirements for new designs and production environments where RoHS compliance is mandated. The specified electrical characteristics (5V rated operation, 80mA supply current, 85dB SPL) provide defined performance parameters suitable for circuit design and validation.

The 0.50mm increase in seated height (3.90mm vs. 3.40mm) remains within typical PCB assembly tolerances for surface mount applications and does not present mechanical interference concerns for standard board layouts.

Frequently Asked Questions (FAQ)

Q: Can the SMT-1427-S-R be used as a direct replacement for the SMT-05 in existing designs?

A: Yes. Both components share identical footprint dimensions (11.00mm x 14.20mm), mounting type (surface mount), termination method (solder pads), and operating frequency (2.7kHz). The seated height difference of 0.50mm is within standard PCB assembly tolerances and does not affect mechanical compatibility.

Q: What is the primary reason for substituting the SMT-05?

A: The SMT-05 is classified as obsolete. The SMT-1427-S-R is an active product offering continued manufacturing support, supply chain availability, and improved regulatory compliance (ROHS3).

Q: Are there electrical compatibility considerations when substituting?

A: The SMT-05 does not specify voltage or current parameters. The SMT-1427-S-R operates at 5V rated with 80mA supply current across a 3V to 7V voltage range. Circuit designs must accommodate these specified electrical characteristics. Both components function as externally driven transducers requiring external driver circuitry.

Q: What packaging options are available for the SMT-1427-S-R?

A: The SMT-1427-S-R is supplied in Tape & Reel (TR) packaging, standard for high-volume surface mount production environments.

Q: Does the SMT-1427-S-R meet RoHS requirements?

A: Yes. The SMT-1427-S-R is ROHS3 compliant. The original SMT-05 is RoHS non-compliant and does not meet current regulatory standards for new product designs.