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| Part Number | SPH1878LR5H-1 | SPH1878LR5H-C |
| Manufacturer | Knowles | Knowles |
| Series | - | SiSonic™ SPH |
| Packaging | Tape & Reel (TR) | Tape & Reel (TR) |
| Product Status | Active | Active |
| Type | MEMS (Silicon) | MEMS (Silicon) |
| Output Type | Analog | Analog |
| Direction | Omnidirectional | Omnidirectional |
| Frequency Range | 20 Hz ~ 10 kHz | 7 Hz ~ 36 kHz |
| Sensitivity | -38dB | -44dB ±0.5dB SPL |
| S/N Ratio | 66dB | 67dB |
| Impedance | - | - |
| Voltage - Rated | 2.7 V | 2.75 V |
| Voltage Range | - | 2.3 V ~ 3.6 V |
| Current - Supply | - | 250 µA |
| Port Location | Bottom | Bottom |
| Ratings | - | - |
| Termination | Solder Pads | Solder Pads |
| Size / Dimension | 0.138" L x 0.104" W (3.50mm x 2.65mm) | 0.138" L x 0.104" W (3.50mm x 2.65mm) |
| Height (Max) | 0.050" (1.26mm) | 0.050" (1.26mm) |
| Shape | Rectangular | Rectangular |
| Grade | - | - |
| Qualification | - | - |
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