ADS-2908 Equivalent & Substitute Parts

Part Overview

The ADS-2908 is an 8 Ohm general purpose speaker rated at 100 mW with a frequency range of 650 Hz to 4 kHz and 88 dB sound pressure level. This component features a top-mounted round port, ferrite magnet construction, and polyester cone material. The part is currently listed as obsolete, making identification of active equivalent components essential for ongoing design support and procurement.

Substiute Parts

ADS-2908

PUI Audio, Inc.In Stock: 1009ADS-2908 Datasheet

Current PartRFQ

ADS02908MR-R

PUI Audio, Inc.In Stock: 1022ADS02908MR-R Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ADS-2908 is determined by strict equivalence across the following critical parameters:

• Impedance: 8 Ohms (electrical matching requirement)
• Power Rating: 100 mW rated, 200 mW maximum (power handling compatibility)
• Frequency Range: 650 Hz ~ 4 kHz (acoustic performance specification)
• Sound Pressure Level: 88 dB (efficiency requirement)
• Physical Dimensions: 1.142" diameter, 0.374" maximum height (mechanical fit)
• Port Location: Top (PCB layout constraint)
• Shape: Round (form factor requirement)
• Termination: Solder Pads (assembly compatibility)

The substitute part ADS02908MR-R meets all these parameters identically, establishing direct functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

The ADS02908MR-R is the direct active equivalent for the obsolete ADS-2908. Both components are manufactured by PUI Audio, Inc. and share identical electrical, acoustic, and mechanical specifications. The primary distinction is product status: ADS-2908 is obsolete while ADS02908MR-R is active and currently in production.

An additional compliance advantage exists with ADS02908MR-R: it carries ROHS3 compliance, whereas the original ADS-2908 is RoHS non-compliant. For new designs or redesigns subject to RoHS requirements, ADS02908MR-R provides regulatory alignment while maintaining full functional equivalence.

Both parts carry identical REACH Unaffected and EAR99 ECCN classifications. Moisture sensitivity level is 1 (Unlimited) for both components.

Frequently Asked Questions (FAQ)

Q: Can ADS02908MR-R be used as a direct replacement for ADS-2908 in existing designs?

A: Yes. Both components are electrically and mechanically identical across all specified parameters: 8 Ohm impedance, 100 mW rated power, 650 Hz to 4 kHz frequency range, 88 dB efficiency, identical physical dimensions, top port location, and solder pad termination. No circuit modifications are required.

Q: What is the difference between ADS-2908 and ADS02908MR-R?

A: The components are functionally equivalent. The primary differences are product status (ADS-2908 is obsolete; ADS02908MR-R is active) and RoHS compliance (ADS02908MR-R is ROHS3 compliant; ADS-2908 is non-compliant). Packaging differs: ADS02908MR-R is supplied in Tray format.

Q: Are there any impedance or power rating differences between these parts?

A: No. Both components maintain 8 Ohm impedance, 100 mW rated power, and 200 mW maximum power ratings. Acoustic performance, including 88 dB sound pressure level and 650 Hz self-resonant frequency, is identical.

Q: Does the tray packaging of ADS02908MR-R affect compatibility?

A: Packaging format does not affect electrical or mechanical compatibility. Tray packaging is a supply format consideration only and does not impact component performance or PCB integration.

Q: Should RoHS compliance influence the selection between these parts?

A: For applications subject to RoHS regulations or customer requirements, ADS02908MR-R is the appropriate choice due to ROHS3 compliance. For legacy systems without RoHS mandates, both parts are functionally equivalent.