MP930-470-1% - Caddock

MP930-470-1% Frequently Asked Questions (FAQs)

• What is the recommended PCB layout for optimal performance of the MP930-470-1%?
  Caddock recommends a symmetrical PCB layout with the resistor centered on the PCB, and using a ground plane to minimize thermal gradients and electromagnetic interference. A minimum of 0.1 inch (2.5 mm) clearance around the resistor is also recommended.
• How does the MP930-470-1% perform in high-frequency applications?
  The MP930-470-1% is designed for high-frequency applications and has a self-resonant frequency of approximately 100 MHz. However, it's essential to consider the parasitic inductance and capacitance of the resistor and the PCB layout when operating at high frequencies.
• What is the maximum power rating of the MP930-470-1% at elevated temperatures?
  The maximum power rating of the MP930-470-1% decreases with increasing temperature. Caddock recommends derating the power rating by 1.5% per degree Celsius above 25°C. For example, at 50°C, the maximum power rating would be approximately 75% of the rated power.
• Is the MP930-470-1% suitable for high-reliability or military applications?
  The MP930-470-1% is a commercial-grade resistor, but Caddock offers a military-grade version, the MP930-470-1%-M, which meets the requirements of MIL-PRF-55342. The military-grade version has additional screening and testing, and is suitable for high-reliability applications.
• Can the MP930-470-1% be used in applications with high humidity or moisture?
  The MP930-470-1% has a moisture sensitivity level (MSL) of 1, which means it can withstand normal humidity levels. However, it's not recommended for applications with high humidity or moisture, as this can affect the resistor's performance and reliability. Caddock recommends using a conformal coating or potting compound to protect the resistor in humid environments.