SMT-901 Equivalent & Substitute Parts

Part Overview

The SMT-901 is a magnetic buzzer transducer manufactured by PUI Audio, Inc., designed for 5V externally driven applications in surface mount configurations. This component is classified as an electromechanical/magnetic transducer with solder pad termination and 8.5mm x 8.5mm footprint dimensions. The SMT-901 is currently listed as obsolete, making identification of compatible substitute parts essential for ongoing design support and production continuity.

Substiute Parts

SMT-901

PUI Audio, Inc.In Stock: 1209SMT-901 Datasheet

Current PartRFQ

SMT-0823-S-R

PUI Audio, Inc.In Stock: 20990SMT-0823-S-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete SMT-901 is based on strict alignment of the following critical parameters:

• Identical manufacturer (PUI Audio, Inc.)
• Identical technology classification (Electromechanical/Magnetic)
• Identical driver circuitry type (Transducer, Externally Driven)
• Identical input signal type (Zero-Peak Signal)
• Identical rated voltage (5 V)
• Identical mounting type (Surface Mount)
• Identical termination method (Solder Pads)
• Identical footprint dimensions (8.50mm x 8.50mm)
• Compatible MSL rating (1 - Unlimited)

The SMT-0823-S-R meets all substitution criteria as an active product from the same manufacturer within the same SMT series, maintaining mechanical and electrical compatibility with the original SMT-901 design.

Parameter Comparison

Engineering Selection Recommendations

The SMT-0823-S-R is the direct substitute for the obsolete SMT-901. Both components share identical mechanical footprints, electrical ratings, and functional classifications. The SMT-0823-S-R offers the additional advantage of active product status, ensuring continued availability and supply chain reliability.

The SMT-0823-S-R provides enhanced compliance with ROHS3 standards, whereas the original SMT-901 is RoHS non-compliant. For applications requiring RoHS compliance, the SMT-0823-S-R is the appropriate selection. The maximum seated height of the substitute is 0.50mm greater than the original (4.50mm vs. 4.00mm), which must be verified against PCB layout constraints and enclosure clearances.

Both components maintain identical MSL ratings and are suitable for standard surface mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the SMT-0823-S-R be used as a direct replacement for the SMT-901 in existing designs?

A: Yes. Both components share identical footprint dimensions (8.50mm x 8.50mm), rated voltage (5V), mounting type (surface mount), and termination method (solder pads). The 0.50mm increase in maximum seated height must be verified against PCB layout and enclosure specifications.

Q: What is the primary reason for substituting the SMT-901?

A: The SMT-901 is classified as obsolete. The SMT-0823-S-R is an active product from the same manufacturer within the same SMT series, providing continued supply availability and design support.

Q: Are there compliance differences between these components?

A: Yes. The SMT-901 is RoHS non-compliant, while the SMT-0823-S-R is ROHS3 compliant. For applications subject to RoHS requirements, the SMT-0823-S-R is the required selection.

Q: What additional electrical parameters are specified for the SMT-0823-S-R?

A: The SMT-0823-S-R provides documented specifications for frequency (2.3kHz), sound pressure level (87dB @ 5V, 10cm), supply current (70mA), operating temperature range (-30°C ~ 70°C), and voltage operating range (3 ~ 7V). These parameters were not specified for the original SMT-901.

Q: Are the packaging formats compatible?

A: The SMT-0823-S-R is supplied in Tape & Reel (TR) format. Verify packaging compatibility with your assembly process requirements and component handling procedures.

Q: Do both components require identical PCB layout considerations?

A: Both components use identical solder pad termination and footprint dimensions. The increased maximum seated height of the SMT-0823-S-R (4.50mm vs. 4.00mm) requires verification of vertical clearance in the final assembly.