AI-135 Equivalent & Substitute Parts

Part Overview

The AI-135 is a piezo buzzer indicator designed for 5V DC applications, operating at 2.3kHz with through-hole PC pin termination. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The AI-135 features internally driven piezo technology suitable for applications requiring compact audible indication.

Substiute Parts

AI-135

PUI Audio, Inc.In Stock: 1108AI-135 Datasheet

Current PartRFQ

AI-1223-TWT-5V-2-R

PUI Audio, Inc.In Stock: 7700AI-1223-TWT-5V-2-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The AI-1223-TWT-5V-2-R qualifies as a functional substitute for the AI-135 based on the following critical parameters:

• Rated voltage: Both operate at 5V DC
• Frequency: Both operate at 2.3kHz
• Driver circuitry: Both feature internally driven indicator configuration
• Input type: Both accept DC input
• Mounting type: Both use through-hole mounting
• Termination: Both use PC pins
• Manufacturer: Both manufactured by PUI Audio, Inc.

The primary difference is technology implementation: the AI-135 uses piezo technology, while the AI-1223-TWT-5V-2-R uses electromechanical/magnetic technology. Both technologies meet the functional requirements of the original specification while providing equivalent audible indication capability.

Parameter Comparison

Engineering Selection Recommendations

The AI-1223-TWT-5V-2-R is the designated substitute for the obsolete AI-135. Selection of this substitute is based on:

• Functional equivalence: Both parts meet the 5V, 2.3kHz, internally driven indicator specification
• Product availability: The AI-1223-TWT-5V-2-R maintains active production status with substantial inventory availability
• Compliance improvement: The substitute achieves ROHS3 compliance, addressing regulatory requirements that the original part does not meet
• Manufacturer continuity: Both parts are sourced from PUI Audio, Inc., ensuring design consistency and supply chain reliability

The substitute provides additional documented specifications including operating temperature range (-25°C ~ 70°C), supply current (30mA), and sound pressure level (85dB @ 5V, 10cm), which were not specified for the original part.

Frequently Asked Questions (FAQ)

Q: Can the AI-1223-TWT-5V-2-R directly replace the AI-135 in existing designs?

A: Yes. Both parts share identical rated voltage (5V), frequency (2.3kHz), internally driven indicator configuration, through-hole mounting, and PC pin termination. The substitute operates within the same functional parameters as the original part.

Q: What is the primary technical difference between these parts?

A: The AI-135 uses piezo technology, while the AI-1223-TWT-5V-2-R uses electromechanical/magnetic technology. Both technologies produce audible indication at the specified frequency and voltage. The substitute provides documented sound pressure level (85dB @ 5V, 10cm) and operating temperature range (-25°C ~ 70°C).

Q: Does the substitute meet current regulatory requirements?

A: Yes. The AI-1223-TWT-5V-2-R is ROHS3 compliant, whereas the original AI-135 is RoHS non-compliant. Both parts are REACH unaffected and classified under ECCN EAR99.

Q: Are there packaging differences between these parts?

A: The AI-135 packaging is not specified in the available data. The AI-1223-TWT-5V-2-R is supplied in tray packaging. Verify packaging requirements for your specific application and procurement process.

Q: What is the physical size difference?

A: The AI-1223-TWT-5V-2-R has documented dimensions of 0.472" diameter (12.00mm) with a maximum seated height of 0.303" (7.70mm). The AI-135 dimensions are not specified. Confirm PCB layout compatibility before implementation.

Q: Is the substitute suitable for washable applications?

A: The AI-1223-TWT-5V-2-R is rated as washable. This capability is not documented for the original AI-135. Evaluate application requirements accordingly.