| PartNumber | SPM0423HM4H-WB | SPM0423HD4H-WB |
| Description | MEMS Microphones MIC SISONIC MINI TOP RF | MEMS Microphones MIC MEMS DIGITAL PDM OMNI -26DB |
| Manufacturer | Knowles | Knowles |
| Product Category | MEMS Microphones | MEMS Microphones |
| RoHS | Y | Y |
| Series | SPM | SPM |
| Sensitivity | - 26 dB | - 26 dB |
| SNR Signal to Noise Ratio | 56 dB | 56 dB |
| Impedance | 100 Ohms | - |
| Frequency Range | 100 Hz to 10 kHz | 100 Hz to 10 kHz |
| Operating Supply Current | 600 uA | 600 uA |
| Operating Supply Voltage | 3.6 V | 3.6 V |
| Minimum Operating Temperature | - 40 C | - 40 C |
| Maximum Operating Temperature | + 100 C | + 100 C |
| Output Type | Digital | Digital |
| Length | 4.72 mm | 4.72 mm |
| Width | 3.76 mm | 3.76 mm |
| Depth | 1.35 mm | 1.35 mm |
| Packaging | Reel | Reel |
| Directional Properties | Omnidirectional | Omnidirectional |
| Technology | Microphones | - |
| Termination Style | SMD/SMT | SMD/SMT |
| Type | Digital MEMS Microphone | Digital MEMS Microphone |
| Brand | Knowles | Knowles |
| Mounting Style | SMD/SMT | SMD/SMT |
| Moisture Sensitive | Yes | - |
| Product Type | MEMS Microphones | MEMS Microphones |
| Factory Pack Quantity | 4800 | 4800 |
| Subcategory | Microphones | Microphones |
| Tradename | SiSonic | SiSonic |