SPKM.78.4.B

Overview

The SPKM.78.4.B is a 78mm miniature speaker manufactured by Taoglas Limited, designed for general-purpose audio applications. It features a nominal impedance of 4 Ohms and a power handling capacity of 5W RMS. The device operates within a frequency range of 100 Hz to 10 kHz and offers high sensitivity for clear audio output. Physically, it has a round top design with dimensions of approximately 78mm in diameter and 27.5mm in height. The unit is rated IP67 for environmental protection and utilizes wire leads for termination, supporting an operating temperature range of -10°C to 65°C.

Feature Summary

• IP67 rated environmental sealing for durability in harsh conditions
• Compact circular form factor facilitating integration into space-constrained electronics
• High sensitivity design ensuring pure and true sound reproduction
• Wire lead termination for straightforward circuit connection

Applications

• IoT devices requiring robust audio feedback
• General purpose electronic equipment needing clear audio output
• Miniature consumer electronics with limited internal space
• Industrial control panels requiring durable speakers

Procurement Notes

Verify the specific datasheet version from Taoglas Limited or authorized distributors to confirm current mechanical drawings and electrical tolerances. Ensure the application environment stays within the specified -10°C to 65°C operating range. Confirm that the wire lead termination method matches the target PCB or harness design requirements before finalizing procurement.

Selection Notes

Select this component when a compact, environmentally sealed speaker is required for IoT or industrial applications. The 4 Ohm impedance and 5W RMS rating suit standard low-voltage audio circuits. Consider the IP67 rating if exposure to dust or water is possible. Verify that the 100 Hz to 10 kHz frequency response aligns with the specific audio content needs of the product.

Part Context

This part belongs to the SPKM series of miniature speakers from Taoglas Limited. The series focuses on delivering long-lasting audio performance in small form factors. The SPKM.78.4.B specifically denotes the 78mm diameter variant with 4 Ohm impedance. This series is positioned for integration into modern electronics where size and durability are critical constraints.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Users should consult Taoglas Limited directly for alternative recommendations or cross-reference based on strict mechanical and electrical parameter matching.