SMT-11 Equivalent & Substitute Parts

Part Overview

The SMT-11 is a magnetic buzzer transducer manufactured by PUI Audio, Inc., designed as an externally driven electromechanical surface mount component with solder pad termination. The device features a compact 12.5mm x 12.5mm footprint and 6.70mm maximum seated height, suitable for integration into space-constrained applications requiring audible signaling.

The SMT-11 is classified as obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this component.

Substiute Parts

SMT-11

PUI Audio, Inc.In Stock: 962SMT-11 Datasheet

Current PartRFQ

SMT-1324-TW-1V-R

PUI Audio, Inc.In Stock: 1700SMT-1324-TW-1V-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the SMT-11 is determined by the following critical parameters:

• Electromechanical/Magnetic technology classification
• Externally driven transducer architecture
• Zero-Peak signal input type
• Surface mount packaging with solder pad termination
• Identical footprint dimensions (12.50mm x 12.50mm)
• Compatible seated height profile (maximum 7.20mm acceptable)
• SMT series designation

The SMT-1324-TW-1V-R qualifies as a direct substitute based on matching all core functional and mechanical parameters. This substitute maintains the same technology platform, driver circuitry, input signal type, and physical mounting interface while providing active product status and enhanced compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The SMT-1324-TW-1V-R is the designated substitute for the obsolete SMT-11. Selection of this substitute is supported by the following engineering factors:

Product Status: The SMT-1324-TW-1V-R maintains active product status with ongoing manufacturer support and availability, addressing the supply discontinuation of the SMT-11.

Compliance Certifications: The substitute achieves ROHS3 compliance, providing enhanced environmental and regulatory alignment compared to the non-compliant SMT-11. Both components maintain REACH Unaffected status and identical MSL ratings.

Physical Compatibility: Identical footprint dimensions (12.50mm x 12.50mm) and compatible seated height (7.20mm maximum versus 6.70mm original) ensure direct PCB layout compatibility without redesign requirements.

Functional Architecture: Matching technology platform, externally driven transducer configuration, and zero-peak signal input type preserve circuit interface requirements and driver stage compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SMT-1324-TW-1V-R be used as a direct replacement for the SMT-11 without PCB modifications?

A: Yes. Both components share identical footprint dimensions (12.50mm x 12.50mm), surface mount solder pad termination, and compatible seated heights. PCB layout modifications are not required for physical placement.

Q: What are the key differences between the SMT-11 and SMT-1324-TW-1V-R?

A: The primary differences are product status (obsolete versus active), RoHS compliance (non-compliant versus ROHS3 compliant), and the availability of specified electrical parameters (voltage, frequency, SPL, current) for the substitute part. The substitute provides 1.5V rated operation, 2.4kHz frequency, 80dB SPL at 10cm, and 30mA supply current.

Q: Are there any height clearance concerns when substituting the SMT-1324-TW-1V-R?

A: The substitute has a maximum seated height of 7.20mm compared to the original 6.70mm. This 0.50mm increase should be verified against PCB assembly clearance requirements and enclosure constraints in the target application.

Q: Does the SMT-1324-TW-1V-R require different driver circuitry than the SMT-11?

A: No. Both components are externally driven transducers with zero-peak signal input type. Existing driver stage circuitry remains compatible without modification.

Q: What is the operating temperature range for the SMT-1324-TW-1V-R?

A: The substitute operates across -20°C to 85°C. Verify this range meets the thermal requirements of your target application.

Q: Is the SMT-1324-TW-1V-R available in the same packaging as the SMT-11?

A: The substitute is supplied in tube packaging. Confirm packaging format compatibility with your procurement and assembly processes.