WBFK-30042-000

Overview

The Knowles WBFK-30042-000 is a wideband balanced armature speaker designed for high-efficiency audio applications. It features a side port configuration and operates with an impedance of 124 ohms. The device delivers a sound pressure level efficiency of 95 dB, ensuring reliable performance in compact electronic assemblies. With a maximum seated height of 6.60 mm (0.260 inches), this component integrates magnetic technology to provide stability and consistent acoustic output across its operational range.

Feature Summary

• Wideband balanced armature design utilizing proprietary magnetic technology
• Side port configuration for optimized acoustic directionality
• High efficiency operation with stable acoustic performance

Applications

• Compact consumer electronics requiring small form factor speakers
• Medical devices needing reliable audio feedback components
• Industrial equipment with space-constrained audio interfaces

Procurement Notes

Verify the specific ordering suffix against official Knowles documentation to confirm mechanical orientation and port configuration. Ensure that the selected variant matches the required impedance and sensitivity specifications for the target circuit design. Cross-reference the datasheet revision date to confirm compliance with current manufacturing standards before finalizing procurement orders.

Selection Notes

Select this component when a wideband response is required within strict height limitations. The 124-ohm impedance must align with the driving circuit capabilities to achieve the specified 95 dB efficiency. Consider the side port orientation during PCB layout to ensure proper acoustic coupling and avoid obstruction by surrounding chassis elements or connectors.

Part Context

This part belongs to the Knowles WBFK series of balanced armature speakers. These components are engineered for integration into portable and wearable devices where size and weight are critical constraints. The series utilizes advanced magnetic materials to maintain performance consistency across varying environmental conditions.

Replacement Considerations

Consult official substitution guides for compatible variants. Verify mechanical footprint compatibility and electrical parameter alignment before replacing existing units in production designs.