Based on your inquiry, the **MA28TBG-R** refers to a high-quality piezo electronic transducer (buzzer) commonly used in industrial and commercial applications. Below is a detailed technical breakdown of this electronic part. --- ## 1. Component Overview The MA28TBG-R is an **indicator/buzzer** manufactured by Mallory Sonalert Products. It is designed to provide a continuous audible tone when a DC voltage is applied. | Feature | Specification | | :--- | :--- | | **Type** | Piezoelectric Indicator | | **Technology** | Internal Circuitry (Buzzer) | | **Sound Level** | 80 - 90 dB @ 2 ft | | **Voltage Range** | 6 - 28 VDC | | **Frequency** | 2900 ± 500 Hz | | **Mounting Type** | Panel Mount | | **Termination** | Screw Terminals (G-Type) | --- ## 2. Key Electronic Characteristics ### A. Internal Drive Circuitry Unlike a simple piezo element that requires an external square wave to produce sound, the MA28TBG-R has **internal circuitry**. When you provide a steady DC voltage within the 6-28V range, it oscillates automatically to produce a tone. ### B. Current Consumption This component is highly efficient. At its rated voltage, it typically draws between **3mA and 18mA**. This low current draw makes it ideal for direct integration with logic gates or small relays without needing heavy-duty power supplies. ### C. Mechanical Design * **Housing:** Usually made of black Noryl (plastic), which is flame retardant and durable. * **Protection:** The "-R" suffix often denotes **RoHS Compliance**, meaning the part is free from hazardous substances like lead and cadmium. --- ## 3. Application Use Cases The MA28TBG-R is frequently found in the following environments: 1. **Industrial Control Panels:** To alert operators of system errors or cycle completions. 2. **Medical Equipment:** Providing low-power audible feedback for monitors. 3. **Security Systems:** Acting as a local alarm or entry/exit chime. 4. **Automotive:** Seatbelt reminders or diagnostic warnings. --- ## 4. Wiring Diagram Representation To integrate this into a circuit, follow this basic logic: ```c [ Power Source + (6-28V) ] ----> [ (+) Terminal of MA28TBG-R ] [ Power Source - (GND) ] ----> [ (-) Terminal of MA28TBG-R ] ``` ---