SM280632-1

Overview

The SM280632-1 is a high-temperature dynamic speaker manufactured by DB Unlimited. It features a 28 mm diameter Mylar cone and operates at a nominal impedance of 32 Ohms. The device has a resonant frequency of 6.5 kHz and delivers a sound pressure level of 91 dB. It supports a nominal power rating of 250 mW with a maximum power handling of 500 mW. The unit utilizes top porting for acoustic output and employs solder pad termination for board mounting. It functions reliably within an operating temperature range of -20°C to +85°C.

Feature Summary

• High-temperature construction designed for thermal stability
• Top ported acoustic design for directed sound output
• Durable Mylar cone material for consistent performance

Applications

• Embedded audio systems requiring thermal resistance
• Industrial control panels with limited space
• Consumer electronics exposed to elevated temperatures

Procurement Notes

Verify the specific datasheet version from DB Unlimited or authorized distributors to confirm exact mechanical tolerances and electrical characteristics. Ensure compatibility with your PCB layout regarding solder pad dimensions and mounting requirements. Cross-reference the 32 Ohm impedance and 250 mW power rating against your amplifier specifications to prevent damage or distortion during operation.

Selection Notes

Select this component when a compact, high-temperature capable speaker is required for embedded applications. The 32 Ohm impedance suits specific driver circuits, while the top porting directs sound efficiently in constrained enclosures. Consider the 28 mm diameter and 4.4 mm height for spatial constraints. Verify that the 91 dB sensitivity meets the volume requirements of the target application environment.

Part Context

DB Unlimited specializes in miniature speakers and transducers for portable and embedded devices. The SM280632-1 belongs to their high-temperature dynamic speaker series, engineered for reliability in harsh environments. This product line emphasizes durability and precise acoustic performance in small form factors, catering to industries demanding robust audio components.

Replacement Considerations

No public confirmed substitute part numbers are available for direct replacement.