The **M3R24FCJ-R** is a specific part number belonging to a series of **Frequency Control Devices**, typically categorized as a **Crystal Oscillator**. These components are essential in electronic circuits for generating stable clock signals. --- ### 1. Component Overview The "M3R" series is generally manufactured by companies like **MtronPTI**. These are typically **OCXO** (Oven Controlled Crystal Oscillators) or high-stability **TCXO** (Temperature Compensated Crystal Oscillators), though the specific prefix "M3R" often refers to a 9x14mm J-leaded surface mount package. ### 2. Technical Specifications While exact specifications can vary based on the full datasheet version, here is the general breakdown of this component class: | Feature | Specification (Typical) | | :--- | :--- | | **Type** | Crystal Oscillator (XO) / TCXO | | **Package Type** | J-Lead Surface Mount (SMD) | | **Package Size** | 9 x 14 mm | | **Output Type** | CMOS / TTL Compatible | | **Supply Voltage** | Usually 3.3V or 5.0V | | **Operating Temp** | -40°C to +85°C (Industrial Grade) | | **RoHS Status** | Compliant (indicated by -R suffix) | --- ### 3. Key Electronic Characteristics * **Frequency Stability:** This part is designed to maintain a very precise frequency even when environmental temperatures change. * **J-Lead Configuration:** The "J" in the part number refers to the lead shape. J-leads curve under the body of the component, which provides excellent thermal expansion stress relief during PCB soldering. * **Tri-state Function:** Most M3R models include a "Tri-state" or "Enable/Disable" pin. This allows the oscillator output to be turned off high-impedance, reducing power consumption when the clock is not needed. ### 4. Common Applications These parts are used in high-reliability sectors where timing precision is critical: 1. **Telecommunications:** Base stations and networking hardware (SONET/SDH). 2. **Data Communications:** High-speed Ethernet switches and routers. 3. **Instrumentation:** Frequency counters and synthesized signal generators. 4. **Avionics:** Flight control systems requiring stable timing in varying temperatures. --- ### 5. Part Number Breakdown (Typical) | Segment | Meaning | | :--- | :--- | | **M3R** | Series Name (9x14mm J-lead) | | **24** | Stability/Voltage Code (Specific to manufacturer) | | **F** | Temperature Range Code | | **C** | Symmetry/Duty Cycle Requirement | | **J** | Package Style (J-Lead) | | **-R** | RoHS Compliant / Tape & Reel Packaging |