SMS-1308MS-R Equivalent & Substitute Parts

Part Overview

The SMS-1308MS-R is an 8 Ohm general purpose speaker manufactured by PUI Audio, Inc., rated for 700 mW continuous power with a frequency range of 400 Hz to 20 kHz. This component is classified as obsolete, which necessitates identification of active equivalent parts for ongoing design and procurement requirements. The speaker features a square top port configuration with polyimide cone material and samarium cobalt magnet technology, housed in a compact 13.00mm x 13.00mm footprint.

Substiute Parts

SMS-1308MS-R

PUI Audio, Inc.In Stock: 910SMS-1308MS-R Datasheet

Current PartRFQ

SMS-1308MS-2-R

PUI Audio, Inc.In Stock: 5592SMS-1308MS-2-R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The SMS-1308MS-2-R qualifies as a direct substitute for the SMS-1308MS-R based on the following critical parameters:

• Impedance: 8 Ohms (identical)
• Power Rating: 700 mW rated, 1 W maximum (identical)
• Efficiency: 88.00 dBA (identical)
• Physical Dimensions: 13.00mm x 13.00mm, 4.00mm height (identical)
• Port Location: Top (identical)
• Shape: Square (identical)
• Material - Cone: Polyimide (PI) (identical)
• Material - Magnet: SmCo (identical)
• Termination: Solder Pads (identical)

The primary difference is the frequency range specification and self-resonant frequency. The SMS-1308MS-2-R operates within 1.1 kHz to 20 kHz, compared to the original 400 Hz to 20 kHz range. This represents a narrower lower frequency response boundary. Both parts maintain identical electrical and mechanical compatibility for standard applications within the overlapping frequency band (1.1 kHz to 20 kHz).

Parameter Comparison

Engineering Selection Recommendations

The SMS-1308MS-2-R is the active production equivalent for the obsolete SMS-1308MS-R. Selection of the SMS-1308MS-2-R is appropriate for new designs and procurement due to its active product status and ROHS3 compliance certification. The SMS-1308MS-2-R maintains full electrical and mechanical compatibility with the original part across all critical parameters.

Applications requiring frequency response below 1.1 kHz should evaluate the frequency range difference. The SMS-1308MS-2-R's lower frequency boundary of 1.1 kHz (versus 400 Hz for the original) may impact performance in bass-heavy or ultra-low frequency applications. For applications operating within the 1.1 kHz to 20 kHz band, no functional compromise exists.

The SMS-1308MS-2-R is available in Tape & Reel packaging, suitable for automated assembly processes. The original SMS-1308MS-R was supplied in bulk packaging. Procurement should confirm packaging requirements for manufacturing workflows.

Frequently Asked Questions (FAQ)

Q: Can SMS-1308MS-2-R directly replace SMS-1308MS-R in existing designs?

A: Yes, for applications operating within the 1.1 kHz to 20 kHz frequency range. Both parts share identical impedance (8 Ohms), power ratings (700 mW), efficiency (88.00 dBA), physical dimensions (13.00mm x 13.00mm), and termination method (solder pads). Designs requiring response below 1.1 kHz require frequency response evaluation.

Q: What is the significance of the frequency range difference?

A: The SMS-1308MS-R specifies 400 Hz to 20 kHz, while SMS-1308MS-2-R specifies 1.1 kHz to 20 kHz. This represents a 700 Hz shift in the lower frequency boundary. Applications such as voice communication, mid-range audio, and standard consumer electronics typically operate above 1.1 kHz and are unaffected. Applications requiring extended bass response below 1.1 kHz should evaluate alternative parts.

Q: Are there packaging differences between these parts?

A: Yes. The SMS-1308MS-R was supplied in bulk packaging. The SMS-1308MS-2-R is supplied in Tape & Reel (TR) format, standard for automated pick-and-place assembly. Confirm packaging compatibility with manufacturing equipment and procurement workflows.

Q: What compliance certifications apply to the SMS-1308MS-2-R?

A: The SMS-1308MS-2-R is ROHS3 compliant and REACH unaffected. Both parts carry EAR99 export classification and 8518.29.8000 HTSUS code. Moisture sensitivity level is 1 (unlimited) for both parts.

Q: Why is the SMS-1308MS-R classified as obsolete?

A: The SMS-1308MS-R is no longer in active production. The SMS-1308MS-2-R is the active equivalent part from PUI Audio, Inc., and should be used for new designs and ongoing procurement.