SMT-2225-T Piezo Buzzer Equivalent & Substitute Parts

Part Overview

The SMT-2225-T is an externally driven piezo transducer buzzer manufactured by PUI Audio, Inc., designed for surface mount applications. This component operates at a rated voltage of 10V with a frequency output of 2.5kHz and generates 80dB sound pressure level at 10cm distance. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

SMT-2225-T

PUI Audio, Inc.In Stock: 745SMT-2225-T Datasheet

Current PartRFQ

SMT-2225-T-R

PUI Audio, Inc.In Stock: 1406SMT-2225-T-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMT-2225-T-R qualifies as a direct substitute based on identical electrical and mechanical specifications. Substitution is determined by the following critical parameters:

• Rated voltage: 10V (identical)
• Frequency output: 2.5kHz (identical)
• Sound pressure level: 80dB @ 10V, 10cm (identical)
• Current supply: 8mA (identical)
• Operating temperature range: -30°C ~ 85°C (identical)
• Physical dimensions: 0.866" Dia (22.00mm), Height 0.240" (6.10mm) (identical)
• Mounting type: Surface Mount with Solder Pads (identical)
• Driver circuitry: Transducer, Externally Driven (identical)

The substitute part maintains full functional and mechanical compatibility with the original component.

Parameter Comparison

Engineering Selection Recommendations

The SMT-2225-T-R is the direct substitute for the obsolete SMT-2225-T. Both components share identical electrical performance and mechanical specifications. The primary distinction is product status: SMT-2225-T-R is currently active in production, whereas SMT-2225-T is obsolete.

An additional consideration is regulatory compliance. The SMT-2225-T-R meets ROHS3 compliance standards, while the original SMT-2225-T is RoHS non-compliant. For applications subject to RoHS regulations, the SMT-2225-T-R is the appropriate selection.

Packaging differs between the two parts: SMT-2225-T is supplied in bulk format, while SMT-2225-T-R is supplied in trays. This distinction affects handling and storage procedures but does not impact electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can SMT-2225-T-R be used as a direct replacement for SMT-2225-T?

A: Yes. Both components have identical rated voltage (10V), frequency (2.5kHz), sound pressure level (80dB @ 10V, 10cm), current supply (8mA), operating temperature range (-30°C ~ 85°C), and physical dimensions (0.866" Dia, 0.240" height). They are functionally and mechanically interchangeable.

Q: What is the difference between these two part numbers?

A: The primary differences are product status and regulatory compliance. SMT-2225-T-R is an active production part with ROHS3 compliance, while SMT-2225-T is obsolete and RoHS non-compliant. Packaging also differs: SMT-2225-T-R uses tray packaging versus bulk for the original part.

Q: Are there any compatibility concerns with PCB layout or circuit design?

A: No. Both parts maintain identical mounting specifications (Surface Mount with Solder Pads), physical dimensions, and port location (Top). PCB layouts designed for SMT-2225-T require no modification for SMT-2225-T-R integration.

Q: Does the tray packaging of SMT-2225-T-R affect performance?

A: No. Packaging format does not affect electrical or acoustic performance. Tray packaging provides improved handling and storage organization compared to bulk format.

Q: Which part should be selected for new designs?

A: SMT-2225-T-R should be selected for new designs. It is an active production component with current availability and ROHS3 compliance, making it the appropriate choice for ongoing and future applications.