| PartNumber | CMT-8540S-SMT-TR | CMT-8530S-SMT-TR |
| Description | Speakers & Transducers Buzzer 8.5mm sq 4kHz 5V SMT | Speakers & Transducers Buzzer 8.5mm sq 2.73kHz 3.6V SMT |
| Manufacturer | CUI Inc. | CUI Inc. |
| Product Category | Speakers & Transducers | Speakers & Transducers |
| RoHS | Y | Y |
| Product | Transducers | Transducers |
| Type | Electromagnetic | Electromagnetic |
| Frequency | 4 kHz | 2.73 kHz |
| Sound Pressure Level | 100 dB | 90 dB |
| Shape | Square | Square |
| Termination Style | SMD/SMT | SMD/SMT |
| Minimum Operating Temperature | - 20 C | - 30 C |
| Maximum Operating Temperature | + 70 C | + 75 C |
| Length | 8.5 mm | 8.5 mm |
| Width | 8.5 mm | 8.5 mm |
| IP Rating | - | - |
| Current Rating | 150 mA | 90 mA |
| Dimensions | 8.5 mm L x 8.5 mm W x 4 mm H | 8.5 mm L x 8.5 mm W x 3 mm H |
| Height | 4 mm | 3 mm |
| Mounting | SMD/SMT | SMD/SMT |
| Packaging | Reel | Reel |
| Series | CMT-8540S-SMT | CMT-8530S-SMT |
| Voltage Rating | 5 V | 3.6 V |
| Brand | CUI | CUI |
| Height mm | 4 mm | 3 mm |
| Length mm | 8.5 mm | 8.5 mm |
| Product Type | Speakers & Transducers | Speakers & Transducers |
| Factory Pack Quantity | 1000 | 1000 |
| Subcategory | Audio Devices | Audio Devices |
| Width mm | 8.5 mm | 8.5 mm |
| Unit Weight | 0.028219 oz | 0.028219 oz |