The **KSBS-152-R** is a specific electronic component, most commonly categorized as a **Surface Mount (SMT) Piezoelectric Buzzer** or Sounder. These parts are designed to provide audible feedback (beeps or tones) in compact electronic devices. --- ## Technical Specifications The "R" suffix typically denotes compliance with **RoHS** standards (lead-free) or specifically refers to the packaging method (Tape & Reel). | Parameter | Typical Value | | :--- | :--- | | **Type** | Piezoelectric Transducer | | **Mounting Type** | Surface Mount (SMD) | | **Operating Voltage** | 1.0V to 25V p-p (Square Wave) | | **Resonant Frequency** | ~4000 Hz (4.0 kHz) | | **Sound Pressure Level (SPL)** | ≥ 75dB @ 10cm | | **Current Consumption** | < 3mA at rated voltage | | **Operating Temperature** | -20°C to +70°C | --- ## Key Features & Construction ### 1. Piezoelectric Element Unlike electromagnetic buzzers that use a coil and magnet, the KSBS-152-R uses a **ceramic piezoelectric disk**. When an oscillating voltage is applied, the ceramic physically deforms, vibrating a metal diaphragm to create sound waves. ### 2. Physical Dimensions The "152" in the part number often indicates the size footprint: * **Width/Length:** Usually approximately 15mm x 15mm. * **Profile:** Low-profile design suitable for automated pick-and-place assembly. ### 3. Drive Circuitry This part is a **transducer**, not an indicator. * **Transducer:** Requires an external oscillating signal (square wave) from a microcontroller (MCU) or a 555 timer circuit to produce sound. * **Indicator (Built-in):** If it were an indicator, it would beep just by applying DC voltage. The KSBS-152-R requires a specific frequency input. --- ## Common Applications * **Consumer Electronics:** Microwave ovens, washing machines, and digital clocks. * **Handheld Devices:** POS terminals, medical monitors, and scanners. * **Industrial:** Alarm signals for control panels. --- ## Implementation Example (Pseudo-code) To drive this part using an Arduino or similar MCU, you would use a PWM signal: ```cpp // Example: Driving the KSBS-152-R at its resonant frequency int buzzerPin = 9; // Connect buzzer to Pin 9 void setup() { pinMode(buzzerPin, OUTPUT); } void loop() { tone(buzzerPin, 4000); // Send a 4kHz signal delay(500); // Beep for 500ms noTone(buzzerPin); // Stop sound delay(1000); // Wait for 1 second } ```