The **5220-DS01-R** is a specific part number typically associated with **PUI Audio**, a major manufacturer of acoustic components. This specific model belongs to their line of **dynamic receivers**, which are specialized speakers designed for use close to the human ear (such as in telephone handsets or headsets). --- ### 1. Component Overview The 5220-DS01-R is a miniature dynamic receiver designed to convert electrical signals into audible sound waves. Unlike standard loudspeakers, receivers are optimized for "near-field" listening. | Property | Specification | | :--- | :--- | | **Type** | Dynamic Receiver | | **Technology** | Moving Coil (Magnetic) | | **Shape** | Circular | | **Diameter** | 20 mm | | **Height** | 5.2 mm | | **Termination** | Solder Pads / Lead Wires | --- ### 2. Technical Specifications The electrical characteristics are critical for matching the part with an audio amplifier or driver circuit. * **Impedance:** Typically **32 Ohms** (Standard for communication devices). * **Rated Input Power:** Usually around **10mW to 30mW**. * **Frequency Range:** Optimized for the human voice range (approx. 300 Hz to 3.4 kHz), though it can often handle up to 7 kHz. * **Sound Pressure Level (SPL):** High sensitivity to ensure clear audio at low power levels. --- ### 3. Key Electronic Features * **RoHS Compliant:** The "-R" suffix at the end of the part number indicates that the component is compliant with **RoHS** (Restriction of Hazardous Substances) standards. * **Internal Magnet:** Uses a high-performance permanent magnet (often Neodymium) to maximize efficiency in a small footprint. * **Diaphragm:** Constructed from lightweight Mylar or similar polymers to ensure rapid response to electrical impulses. --- ### 4. Common Applications Due to its size and impedance profile, the 5220-DS01-R is found in: 1. **Telecommunications:** Landline handsets and VoIP phones. 2. **Medical Devices:** Diagnostic equipment with voice prompts or hearing assistance. 3. **Security Systems:** Intercoms and entry-access control panels. 4. **Handheld Terminals:** Scanning devices or mobile point-of-sale (POS) systems. --- ### 5. Installation Note When integrating this part into a PCB or housing: * **Polarity:** Pay attention to the "+" and "-" markings on the solder pads to ensure the phase of the sound is correct. * **Acoustic Sealing:** To achieve the best frequency response, the front of the receiver should be sealed against the housing to prevent "acoustic short-circuiting" (where sound from the back cancels sound from the front).