The MP45DT02TR-M is a high-performance digital MEMS microphone from STMicroelectronics, designed primarily for audio input in consumer electronics. Featuring omnidirectional sensing and a digital PDM output, this compact microphone is widely used in voice-activated systems, smartphones, and wearable devices. Although the model is now marked as Obsolete, it remains relevant in many ongoing designs.

| MP45DT02TR-M Technical Parameters | |
|---|---|
| Manufacturer | STMicroelectronics |
| Type | MEMS (Silicon) |
| Output Type | Digital, PDM |
| Directionality | Omnidirectional |
| Frequency Range | 100 Hz ~ 10 kHz |
| Sensitivity | -26dB ±3dB @ 94dB SPL |
| Signal-to-Noise Ratio | 61dB |
| Rated Voltage | 1.8 V |
| Voltage Range | 1.64 V ~ 3.6 V |
| Current Consumption | 650 µA |
| Port Location | Top |
| Termination | Solder Pads |
| Package | 0.186" x 0.148" (4.72mm x 3.76mm) |
| Height | 0.053" (1.35mm) |
| Status | Obsolete |
As MP45DT02TR-M is obsolete, the following digital MEMS microphones can be considered as replacement options:
| Model | Manufacturer | Output | Availability | Price (USD) | Datasheet |
|---|---|---|---|---|---|
| MP34DT05TR-A | STMicroelectronics | Digital (PDM) | ✅ In Stock | $1.45 | |
| IMP34DT05TR | TDK InvenSense | Digital (I²S) | ✅ In Stock | $1.80 | |
| MP34DT05TR | Knowles | Digital (I²S) | ✅ In Stock | $2.10 |
Although MP45DT02TR-M is obsolete, you may still find remaining stock or refurbished units from niche distributors. For the latest price and stock availability, check with:
📄 Download MP45DT02TR-M Datasheet (PDF)
Looking for MP45DT02TR-M or equivalent parts? Contact Onzuu, your trusted electronic component distributor. We offer sourcing, BOM services, and global delivery.
| Frequency Range | 100 Hz ~ 10 kHz | |
| Shape | Rectangular | |
| S/N Ratio | 61dB | |
| Output Type | Digital, PDM | |
| ECCN | EAR99 | |
| Termination | Solder Pads | |
| Voltage - Rated | 1.8 V | |
| Current - Supply | 650 µA | |
| Size / Dimension | 0.186" L x 0.148" W (4.72mm x 3.76mm) | |
| Direction | Omnidirectional | |
| Height (Max) | 0.053" (1.35mm) | |
| Voltage Range | 1.64 V ~ 3.6 V | |
| Product Status | Obsolete | |
| Series | - | |
| Type | MEMS (Silicon) | |
| Sensitivity | -26dB ±3dB @ 94dB SPL | |
| REACH Status | REACH Unaffected | |
| Mfr | STMicroelectronics | |
| HTSUS | 8518.10.8030 | |
| Package | Tape & Reel (TR) | |
| Port Location | Top | |
| RoHS Status | ROHS3 Compliant | |
| Base Product Number | MP45 | |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
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