Description:
This is a 20mm diameter 0.5W 8 Ohm speaker for adding sound to projects.
Main Features of Speaker 20mm 0.5W 8 OHM:
- 20mm Outside diameter w/ plastic cone
- 0.5W power handling w/ 8 Ohm impedance
- Solder pads for connections
These small speakers work well for adding a little sound to your next project.
Speaker Connections
The speakers have solder pads for making connections. Use the outside pads for soldering as the inside pads connect the small wires to the speaker cone.
For use with an MCU, the ‘-‘ pad is connected to the system ground, and the ‘+’ pad is connected to a digital output pin from the MCU or a small audio amplifier. A series capacitor of around 10uF – 47uF should be used in series with the drive pin to prevent DC current flow and avoid possible damage to the MCU output if driving directly off the MCU.
If a louder sound is desired, a transistor, LM386 audio amp, or other amplifying device can be placed in the circuit to provide a stronger drive to the speaker.
Technical Specifications
| Maximum Ratings | ||
| Max Power | 0.5W | |
| Impedance | 8 Ohm | |
| Dimensions | Dia x H | 20 x 4mm |
