Murata MA40S4R Ultrasonic Receiver Sensor - 40kHz, 9.9mm Dia, Open Type
The Murata MA40S4R is a high-sensitivity 40kHz ultrasonic receiver sensor designed for precise acoustic detection in ranging, object detection, and flow measurement systems. Its compact 9.9mm diameter and open-type structure make it suitable for integration into various electronic and industrial control platforms.
Features
- High sound pressure level (SPL) of 120 dB ±3 dB for superior sensitivity and long-range detection capability.
- Precisely tuned 40.0 kHz operating frequency for compatibility with standard ultrasonic transmitter pairs.
- Compact and robust open-type structure with a 9.9mm diameter, ideal for space-constrained indoor applications.
- Wide operating temperature range from -40°C to +85°C ensures reliable performance in harsh environments.
- Specified capacitance of 2,550pF ±20% and insulation resistance >100 MΩ for stable electrical matching.
Out of stock
The MA40S4R ultrasonic receiver utilizes a piezoelectric ceramic element housed within a funnel-shaped resonator and resin case. This design efficiently concentrates incoming ultrasonic waves from the air onto the active element, converting acoustic energy into an electrical signal. The high sound pressure level is a critical parameter, directly enabling longer detection distances and improved signal-to-noise ratios in applications like ultrasonic ranging.
Engineered for durability, the sensor operates across an industrial temperature range. Its open-type structure is optimized for indoor use where environmental protection from liquids is not required, allowing for maximum acoustic coupling with the air. The device is characterized for drive conditions up to 20Vp-p at 40kHz with a continuous square wave, providing clear specifications for circuit designers.
Additional Information
| Weight | 0.01 kg |
|---|---|
| Dimensions | 7 × 9 × 1 cm |
