| PartNumber | SMT-0821-T-R | SMT-0821-S-R | SMT-0820-S-R |
| Description | Speakers & Transducers SMD TRANSDUCER 3.6VP-P 90MA | Speakers & Transducers 87dBA 3.6Vpp 2100Hz | Speakers & Transducers SMD TRANSDUCER 5VP-P 70MA |
| Manufacturer | PUI Audio | PUI Audio | PUI Audio |
| Product Category | Speakers & Transducers | Speakers & Transducers | Speakers & Transducers |
| RoHS | Y | Y | Y |
| Product | Transducers | Transducers | Transducers |
| Type | Electromagnetic | Electromagnetic | Electromagnetic |
| Frequency | 3.5 kHz | 2.1 kHz | 2 kHz |
| Sound Pressure Level | 87 dBA | 87 dBA | 85 dBA |
| Shape | Square | Square | - |
| Termination Style | Solder Pad | Solder Pad | - |
| Minimum Operating Temperature | - 30 C | - 40 C | - |
| Maximum Operating Temperature | + 70 C | + 85 C | - |
| Length | 8.5 mm | 8.5 mm | 8.5 mm |
| Width | 8.5 mm | 8.5 mm | 8.5 mm |
| Depth | 4 mm | 4 mm | - |
| IP Rating | - | - | - |
| Current Rating | 90 mA | 90 mA | 70 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 4 mm H | 8.5 mm L x 8.5 mm W x 4 mm H |
| Height | 4 mm | 4 mm | 4 mm |
| Mounting | SMD/SMT | SMD/SMT | SMD/SMT |
| Packaging | Reel | Reel | Reel |
| Self Resonant Frequency | 2.1 kHz | 2.1 kHz | 2 kHz |
| Series | SMT | SMT | SMT |
| Voltage Rating | 3.6 V | 3.6 V | 5 V |
| Brand | PUI Audio | PUI Audio | PUI Audio |
| Length in | 0.335 in | 0.335 in | 0.335 in |
| Length mm | 8.5 mm | 8.5 mm | 8.5 mm |
| Product Type | Speakers & Transducers | Speakers & Transducers | Speakers & Transducers |
| Factory Pack Quantity | 1000 | 1000 | 1000 |
| Subcategory | Audio Devices | Audio Devices | Audio Devices |
| Width in | 0.335 in | 0.335 in | 0.335 in |
| Width mm | 8.5 mm | 8.5 mm | 8.5 mm |
| Height in | - | - | 0.157 in |
| Height mm | - | - | 4 mm |