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| PartNumber | BTM-23546-D47 | BTM-26901-B01 | BTM-26902-B01 |
| Description | Microphones Omni-directional | Microphones Omni-directional | Microphones Omni-directional |
| Manufacturer | Knowles | Knowles | Knowles |
| Product Category | Microphones | Microphones | Microphones |
| RoHS | Y | - | - |
| Directional Properties | Omnidirectional | Omnidirectional | Omnidirectional |
| Impedance | 5.25 kOhms | - | 5.2 kOhm |
| Sensitivity | - 55.5 dBA | - | -55.5dB ±3dB @ 74dB SPL |
| IP Rating | - | - | - |
| Length | 3.57 mm | - | 3.57 mm |
| Width | 3.57 mm | - | 3.57 mm |
| Depth | 1.7 mm | - | 1.7 mm |
| Operating Supply Voltage | 1.3 V | - | 1.3 VDC |
| Series | TM | BTM | BTM |
| Brand | Knowles | - | - |
| Length in | 0.141 in | - | - |
| Length mm | 3.57 mm | - | - |
| Product Type | Microphones | - | - |
| Factory Pack Quantity | 25 | - | - |
| Subcategory | Audio Devices | - | - |
| Width in | 0.141 in | - | - |
| Width mm | 3.57 mm | - | - |
| Type | - | - | Electret Condenser |
| Packaging | - | - | Tray |
| Termination | - | - | Solder Pads |
| Voltage Rated | - | - | 1.3V |
| Current Supply | - | - | 75μA |
| Port Location | - | - | Bottom |
| Size Dimension | - | - | 3.57mm L x 3.57mm W |
| Output Type | - | Analog | Analog |
| Direction | - | Omnidirectional | Omnidirectional |
| Frequency Range | - | - | 100Hz ~ 10kHz |
| S N Ratio | - | - | - |
| Seal Rating | - | None | None |
| Height Max | - | - | 1.70mm |
| Shape | - | - | Square |
| Length in | - | - | 0.141 in |
| Length mm | - | - | 3.57 mm |
| Width in | - | - | 0.141 in |
| Width mm | - | - | 3.57 mm |