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| PartNumber | BL-21671-140 | BL21681-000 | BL-21671-000 |
| Description | Microphones 7.92 X 5.59 X 2.28MM -54.5 SENS, 12S PORT | Microphones | Microphones 7.92 X 5.59 X 2.28MM -54.5 SENS, 12S PORT |
| Manufacturer | Knowles | Knowles | Knowles |
| Product Category | Microphones | Microphones | Microphones |
| RoHS | Y | - | - |
| Directional Properties | Omnidirectional | - | - |
| Impedance | 13 kOhms | - | 13 kOhm |
| Current Rating | 50 uA | - | - |
| Sensitivity | - 54 dBA | - | -54dB ±3dB @ 74dB SPL |
| Termination Style | Solder Pad | - | - |
| IP Rating | - | - | - |
| Length | 7.87 mm | - | - |
| Width | 5.54 mm | - | - |
| Depth | 4.13 mm | - | - |
| Operating Supply Voltage | 1.3 V | - | - |
| Frequency | 2.5 kHz | - | - |
| Packaging | Bulk | - | - |
| Series | BL | - | BL |
| Brand | Knowles | - | - |
| Length in | 0.31 in | - | - |
| Length mm | 7.87 mm | - | - |
| Product Type | Microphones | - | - |
| Factory Pack Quantity | 1 | - | - |
| Subcategory | Audio Devices | - | - |
| Width in | 0.218 in | - | - |
| Width mm | 5.54 mm | - | - |
| Type | - | - | Piezo |
| Termination | - | - | Solder Pads |
| Voltage Rated | - | - | 1.3V |
| Current Supply | - | - | 50μA |
| Port Location | - | - | Side |
| Size Dimension | - | - | 7.87mm L x 5.54mm W |
| Output Type | - | - | Analog |
| Direction | - | - | Omnidirectional |
| Frequency Range | - | - | 100Hz ~ 10kHz |
| S N Ratio | - | - | - |
| Seal Rating | - | - | None |
| Height Max | - | - | 4.13mm |
| Shape | - | - | Rectangular |