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| PartNumber | BW-21789-000 | BW-21784-000 | BW-21810-000 |
| Description | Microphones | Microphones | Microphones |
| Manufacturer | Knowles | Knowles | Knowles |
| Product Category | Microphones | Microphones | Microphones |
| RoHS | Y | Y | - |
| Directional Properties | Noise Cancelling | - | - |
| Impedance | 3.5 kOhms | 3.5 kOhms | 3.5 kOhm |
| Current Rating | 50 uA | 50 uA | - |
| Sensitivity | - 55 dBA | - 60 dBA | -60dB ±3dB @ 74dB SPL |
| Termination Style | Solder Pad | Solder Pad | - |
| IP Rating | - | - | - |
| Length | 7.87 mm | 7.87 mm | - |
| Width | 5.54 mm | 5.54 mm | - |
| Depth | 2.29 mm | 2.24 mm | - |
| Operating Supply Voltage | 10 V | 1.3 V | - |
| Frequency | 4 kHz | 4.3 kHz | - |
| Packaging | Bulk | Bulk | Bulk |
| Series | BW | BW | BW |
| Brand | Knowles | Knowles | - |
| Length in | 0.31 in | 0.31 in | - |
| Length mm | 7.87 mm | 7.87 mm | - |
| Product Type | Microphones | Microphones | - |
| Factory Pack Quantity | 25 | 1 | - |
| Subcategory | Audio Devices | Audio Devices | - |
| Width in | 0.218 in | 0.218 in | - |
| Width mm | 5.54 mm | 5.54 mm | - |
| Type | - | - | - |
| Termination | - | - | Solder Pads |
| Voltage Rated | - | - | 1.3V |
| Current Supply | - | - | 50μA |
| Port Location | - | - | Side, Top |
| Size Dimension | - | - | 7.87mm L x 5.54mm W |
| Output Type | - | - | Analog |
| Direction | - | - | - |
| Frequency Range | - | - | 300Hz ~ 4.3kHz |
| S N Ratio | - | - | - |
| Seal Rating | - | - | None |
| Height Max | - | - | 2.24mm |
| Shape | - | - | Rectangular |