PT-2408 Equivalent & Substitute Parts

Part Overview

The PT-2408 is an externally driven piezo buzzer transducer manufactured by Soberton Inc., rated for 5V operation with a 24mm through-hole form factor. This component is designed for applications requiring single-tone audio signaling at 4kHz frequency with 90dB sound pressure level at 5V, 10cm distance. The part is currently active in production with full RoHS3 compliance and maintains 1044 units in new original stock inventory.

Equivalent and substitute parts are identified to support design flexibility, supply chain continuity, and application-specific voltage or performance requirements where the primary part may be unavailable or where alternative electrical characteristics better suit system design parameters.

Substiute Parts

PT-2408

Soberton Inc.In Stock: 1083PT-2408 Datasheet

Current PartRFQ

AT-2440-TWT-R

PUI Audio, Inc.In Stock: 7353AT-2440-TWT-R Datasheet

DirectRFQ

CEP-1112

CUI DevicesIn Stock: 9666CEP-1112 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PT-2408 is determined by the following critical parameters:

Mechanical Compatibility: All substitute parts must maintain the same 24mm diameter through-hole mounting configuration with PC pin termination to ensure direct PCB footprint compatibility.

Electrical Compatibility: Substitute parts must operate within the voltage range of 1 ~ 30V to ensure compatibility with the same driver circuitry. The rated voltage may differ, but the part must function within the system's supply voltage specification.

Functional Characteristics: All substitute parts must be externally driven piezo transducers operating in single-tone mode to maintain equivalent signal processing requirements.

Compliance Requirements: All substitute parts must maintain RoHS3 compliance and REACH unaffected status to meet regulatory requirements equivalent to the primary part.

Based on these criteria, the following parts qualify as substitutes:

• AT-2440-TWT-R (PUI Audio, Inc.): 3V rated, 24mm through-hole, externally driven piezo, operates within 1 ~ 30V range, RoHS3 compliant
• CEP-1112 (CUI Devices): 10V rated, 24mm through-hole, externally driven piezo, operates within 30V maximum range, RoHS3 compliant

Parameter Comparison

Engineering Selection Recommendations

PT-2408 (Primary Part): Select this part for applications requiring 5V nominal operation with 90dB output at standard test conditions. The part maintains active production status with established supply availability (1044 units in stock). Operating temperature range of -20°C to 70°C suits standard industrial and consumer applications.

AT-2440-TWT-R (Lower Voltage Alternative): This substitute is suitable for 3V-rated system designs where the lower supply voltage is a design requirement. The part maintains identical 4kHz frequency and 1mA current draw, reducing power consumption compared to the primary part. Operating temperature range extends to -20°C but is limited to 60°C maximum. The washable rating provides additional environmental protection for specific applications.

CEP-1112 (Higher Voltage Alternative): This substitute accommodates 10V-rated system designs with higher sound pressure output (92dB @ 10V, 10cm). The extended operating temperature range (-30°C to 85°C) supports applications requiring broader thermal performance. Current draw increases to 11mA, requiring driver circuit evaluation for power budget compatibility. MSL rating of 1 (Unlimited) indicates enhanced moisture handling capability.

All three parts maintain RoHS3 compliance and REACH unaffected status, ensuring regulatory equivalence for component selection.

Frequently Asked Questions (FAQ)

Q: Can AT-2440-TWT-R be used as a direct replacement for PT-2408 in a 5V circuit?

A: AT-2440-TWT-R is rated for 3V operation. While it operates within the 1 ~ 30V voltage range, using it at 5V exceeds its rated voltage. The part will function but operates outside its specified electrical rating. System design must account for the lower rated voltage and reduced SPL output (80dB @ 3V vs. 90dB @ 5V for the primary part).

Q: What are the mechanical compatibility requirements for substitution?

A: All substitute parts maintain the 24mm diameter through-hole mounting configuration with PC pin termination. Height variation between PT-2408 (0.303" max) and CEP-1112 (0.307" max) is 0.004" and does not affect PCB footprint compatibility. Verify clearance in applications with height-constrained layouts.

Q: How does current draw affect driver circuit selection?

A: PT-2408 and AT-2440-TWT-R both draw 1mA at rated voltage. CEP-1112 draws 11mA, requiring verification that the driver circuit can supply this current level without exceeding design specifications. Confirm power budget and driver output capability before substitution.

Q: Are frequency specifications equivalent across all substitute parts?

A: PT-2408 and AT-2440-TWT-R both operate at 4kHz. CEP-1112 does not specify frequency in the provided data. Frequency equivalence cannot be confirmed for CEP-1112. Verify frequency compatibility with system requirements before selection.

Q: What temperature range considerations apply to substitution?

A: PT-2408 operates -20°C to 70°C. AT-2440-TWT-R is limited to -20°C to 60°C (10°C lower maximum). CEP-1112 extends to -30°C to 85°C (15°C lower minimum, 15°C higher maximum). Select based on application thermal requirements.