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See Product Specifications
| Part Number: | PMM-3738-WP-R | 
| Category: | Audio Products | 
| Subcategory: | Microphones | 
| Manufacturer: | PUI Audio, Inc. | 
| Packaging: | Tape & Reel (TR) | 
| Product Status: | Obsolete | 
| Type: | Piezo MEMS | 
| Output Type: | Analog | 
| Direction: | Omnidirectional | 
| Frequency Range: | 100 Hz ~ 10 kHz | 
| Sensitivity: | -37dB ±3dB @ 94dB SPL | 
| S/N Ratio: | 61dB | 
| Impedance: | 400 Ohms | 
| Voltage - Rated: | 2.1 V | 
| Voltage Range: | 1.6 V ~ 3.6 V | 
| Current - Supply: | 150 µA | 
| Port Location: | Bottom | 
| Ratings: | IP68 - Dust Tight, Waterproof | 
| Termination: | Solder Pads | 
| Size / Dimension: | 0.148" L x 0.116" W (3.76mm x 2.95mm) | 
| Height (Max): | 0.043" (1.10mm) | 
| Shape: | Rectangular |