The **MMA02040D3JB3** is a high-precision electronic component manufactured by **Vishay Beyschlag**. It belongs to the **MELF** (Metal Electrode Leadless Face) resistor family, which is renowned for its reliability and stability compared to standard thick-film chip resistors. --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of this part: | Parameter | Specification | | :--- | :--- | | **Manufacturer** | Vishay Beyschlag | | **Series** | MMA 0204 - Professional | | **Resistance Value** | Specified by the "3JB3" suffix (typically 3.3 kΩ) | | **Tolerance** | ±5% (standard for "J" suffix) | | **Power Rating** | 0.4 W (at 70°C) | | **Voltage Rating** | 200 V | | **Temperature Coefficient** | ±50 ppm/K (Standard) | | **Package Size** | DIN 0204 (approx. 3.6 mm length) | | **Operating Temperature** | -55°C to +155°C | --- ### 2. Key Features * **MELF Design:** The cylindrical shape provides superior thermal distribution and mechanical strength against board flexing. * **Pulse Stability:** MELF resistors handle surges and pulses significantly better than flat-chip resistors of the same size. * **Sulfur Resistance:** The metal film construction is inherently resistant to environmental sulfur, preventing corrosion. * **Reliability:** AEC-Q200 qualified, making it suitable for automotive and high-stress industrial applications. --- ### 3. Part Number Decoding The suffix **D3JB3** provides specific ordering information: 1. **MMA 0204:** The case size and series type. 2. **D:** Denotes the standard Temperature Coefficient (TCR). 3. **3:** Represents the first significant digit of the resistance. 4. **J:** Represents the tolerance (±5%). 5. **B3:** Often refers to the packaging style (e.g., Blister tape/Reel). --- ### 4. Common Applications Due to its robust nature, the MMA0204 is frequently found in: * **Automotive Electronics:** Engine control units, lighting, and safety systems. * **Industrial Power Supplies:** DC/DC converters and inverter circuits. * **Telecommunications:** Base station equipment requiring long-term stability. * **Medical Equipment:** Monitoring devices where precision over time is critical. ---