CDS-4020-16

Overview

The CDS-4020-16 is a general-purpose rectangular micro-speaker manufactured by Same Sky. It features a 16 Ohm impedance and a rated power of 1.5 W, with a maximum power handling of 3 W. The device operates within a frequency range of 440 Hz to 20 kHz and has a self-resonant frequency of 550 Hz. It delivers a sound pressure level of 90 dBA when tested at 1W/1M. The speaker utilizes a Neodymium Iron Boron magnet and a cloth cone. Dimensions are 40 mm x 20 mm with a maximum installation height of 5.8 mm. Termination is provided via solder eyelets.

Feature Summary

• Rectangular frame design optimized for compact audio applications
• High-efficiency acoustic output utilizing neodymium magnet technology
• Robust construction with cloth cone material for durability

Applications

• General purpose audio reproduction in consumer electronics
• Portable electronic devices requiring compact speakers
• Industrial control panels with audio feedback requirements

Procurement Notes

Verify the specific termination style matches your PCB layout, as this model uses solder eyelets rather than standard pads. Confirm that the 16 Ohm impedance aligns with your amplifier's output capabilities to ensure optimal power transfer. Check RoHS compliance documentation if required for your manufacturing standards. Ensure enclosure designs account for the top-port configuration to maintain specified acoustic performance.

Selection Notes

Select this component when a rectangular form factor is required for space-constrained designs. The 16 Ohm impedance suits applications driven by higher voltage, lower current sources compared to 4 Ohm alternatives. Consider the 90 dBA sensitivity for environments requiring moderate volume levels without excessive amplification. The 40x20mm outline allows for integration into slim profiles where circular speakers may not fit.

Part Context

This part belongs to the CDS series of miniature speakers from Same Sky, formerly CUI Devices. The series offers various impedances and sizes, ranging from 10 mm to 40 mm. The CDS-4020-16 specifically addresses needs for rectangular frames with 16 Ohm impedance. It shares design principles with other CDS models but differs in electrical characteristics and physical dimensions.

Replacement Considerations

Direct substitutes include other CDS-4020 variants with different impedances, such as CDS-4020-4 (4 Ohm) or CDS-4020-8 (8 Ohm), if impedance changes are acceptable. For identical specifications, verify availability of CDS-4020-16 from authorized distributors. Cross-model replacements require matching mounting dimensions and port location.