{"product_id":"murata-pkmcs0909e4000-r1-smt-piezoelectric-sounder-beeper-4khz-65db-9x9mm","title":"Murata PKMCS0909E4000-R1 SMT Piezoelectric Sounder Beeper (4kHz, 65dB, 9x9mm)","description":"\u003cp\u003eAdd clean acoustic notifications and alerts to your space-constrained electronic hardware with the genuine \u003cb\u003ePKMCS0909E4000-R1\u003c\/b\u003e surface-mount piezoelectric sounder from Murata. Featuring an ultra-compact \u003cb\u003e9.0 x 9.0 mm footprint\u003c\/b\u003e with a low height profile of just \u003cspan class=\"math-inline\"\u003e$1.7\\text{ mm}$\u003c\/span\u003e, this ceramic buzzer generates a clear \u003cb\u003e4.0 kHz resonant tone\u003c\/b\u003e at a sound pressure level (SPL) of \u003cb\u003e65 dB\u003c\/b\u003e (at \u003cspan class=\"math-inline\"\u003e$10\\text{ cm}$\u003c\/span\u003e).\u003c\/p\u003e\n\u003cp\u003eDesigned without internal drive circuitry (externally driven piezo sounder), it operates seamlessly with standard microcontroller PWM signal outputs (e.g., Arduino, ESP32, STM32) using minimal power consumption and creating zero electromagnetic interference (EMI). Its reflow-solderable SMD housing is ideal for compact wearable tech, medical monitors, smart home sensors, handheld meters, and wireless IoT devices requiring audible user feedback.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eKey Features:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003e4.0 kHz Resonant Frequency:\u003c\/b\u003e Produces a sharp, high-pitch acoustic tone easily audible in noisy ambient environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eUltra-Compact 9x9mm Footprint:\u003c\/b\u003e Slim \u003cspan class=\"math-inline\"\u003e$1.7\\text{ mm}$\u003c\/span\u003e height saves critical vertical enclosure space.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eLow Power Consumption:\u003c\/b\u003e Piezoelectric design draws minimal current, making it perfect for battery-powered devices.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eZero EMI Generation:\u003c\/b\u003e Solid-state ceramic structure produces no magnetic field or RF interference.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePart Number:\u003c\/b\u003e PKMCS0909E4000-R1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eManufacturer:\u003c\/b\u003e Murata Electronics\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eComponent Type:\u003c\/b\u003e Piezoelectric Sounder \/ External Drive Buzzer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eResonant Frequency:\u003c\/b\u003e 4.0 kHz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSound Pressure Level (SPL):\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e$\\ge 65\\text{ dB}$\u003c\/span\u003e (at \u003cspan class=\"math-inline\"\u003e$3\\text{Vp-p}$\u003c\/span\u003e, \u003cspan class=\"math-inline\"\u003e$4\\text{kHz}$\u003c\/span\u003e, \u003cspan class=\"math-inline\"\u003e$10\\text{ cm}$\u003c\/span\u003e)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eOperating Voltage:\u003c\/b\u003e Up to \u003cspan class=\"math-inline\"\u003e$25\\text{ Vp-p}$\u003c\/span\u003e max\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDimensions:\u003c\/b\u003e \u003cspan class=\"math-inline\"\u003e$9.0\\text{ mm} \\times 9.0\\text{ mm} \\times 1.7\\text{ mm}$\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMounting Type:\u003c\/b\u003e Surface Mount (SMD \/ SMT)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RC-LIFE","offers":[{"title":"Default Title","offer_id":54302662787410,"sku":null,"price":4.0,"currency_code":"PLN","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1065\/8067\/2850\/files\/2529461-40.webp?v=1787056149","url":"https:\/\/rc-life.com\/products\/murata-pkmcs0909e4000-r1-smt-piezoelectric-sounder-beeper-4khz-65db-9x9mm","provider":"rc-life","version":"1.0","type":"link"}