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Murata MA40S4S Ultrasonic Sensor

The MA40S4S from Murata is an open-structure ultrasonic sensor designed for distance measurement and sensing applications. It features a 10mm diameter composite oscillating body that combines a metal plate with piezoelectric ceramics mounted within a funnel-shaped resonator to efficiently radiate ultrasonic waves. With a nominal operating frequency of 40 kHz, the sensor offers a sound pressure level of 120 dB and a directivity of 80°. It is suitable for detection up to 4 meters and operates reliably within a temperature range of -40°C to 85°C. The sensor has a sensitivity typically around -63 dB and an allowable input voltage of 20 Vpp at 40 kHz.

Authorized Distributors
Source:Newark
Part No:MA40S4S
Stock:732
Inv Date:06-02-2026
Price: Unit price: $5.71
Buy/RFQ:
Source:DigiKey
Part No:MA40S4S
Stock:3630
Inv Date:06-02-2026
Price: Unit price: $5.77
Buy/RFQ:
Part No:MA40S4S
Stock:1965
Inv Date:06-03-2026
Price: Unit price: $5.19
Buy/RFQ:
Part No:MA40S4S
Stock:0
Inv Date:06-02-2026
Price: Unit price: $3.53
Buy/RFQ:

Murata MA40S4S Ultrasonic Sensor Specifications:

  • Type: Ultrasonic Transmitter
  • Structure: Open type
  • Dimension: 10 mm diameter composite oscillating body
  • Operating Frequency: 40 kHz
  • Sound Pressure Level: 120 +/- 3 dB
  • Capacitance: 2,550 pF +/- 20% at 1 kHz
  • Maximum Input Voltage: 20 Vp-p at 40 kHz
  • Operating Temperature Range: -40°C to +85°C
  • Storage Temperature Range: -40°C to +85°C
  • Insulation Resistance: > 100 MΩ at 50 V DC
  • Sensitivity: approximately -63 dB
  • Directivity: 80°
  • Response Time: not specified
  • Material: composite ceramic and metal
  • Connections: terminals with solder area
  • Other Features: suitable for distance detection up to 4 meters

Buy the Murata MA40S4S – Reliable Ultrasonic Sensor for Industrial Applications

Purchase the Murata MA40S4S ultrasonic sensor online today to enhance your sensing systems. This open-structure design provides accurate distance detection up to 4 meters, operates reliably within -40°C to 85°C, and features a 40 kHz frequency with 120 dB SPL. Ideal for industrial automation, robotics, and sensor integration, this sensor’s compact size and high performance make it a versatile choice. Order now to secure fast delivery and enjoy the dependable quality that Murata offers for your projects.

Order your Murata MA40S4S ultrasonic transducer today and ensure precise distance measurement with high reliability in various industrial environments.

Frequently Asked Questions

Where can I buy Murata MA40S4S?

You can click on the BUY or RFQ button to purchase MA40S4S from an authorized Murata distributor.

How do I troubleshoot issues or seek technical support for part MA40S4S?

You can download the MA40S4S datasheet or visit the Murata website for support.

Who is the manufacturer of MA40S4S?

Murata

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