SRR7045-121M - Bourns

SRR7045-121M Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and land pattern for the SRR7045-121M?
  Bourns provides a recommended PCB layout and land pattern in their application note AN-13, which can be found on their website. It's essential to follow these guidelines to ensure proper performance and reliability.
• How does the SRR7045-121M behave in high-temperature environments?
  While the datasheet specifies an operating temperature range of -40°C to +125°C, Bourns recommends derating the current rating by 1.5% per degree Celsius above 80°C to ensure reliable operation. Consult with Bourns' application engineers for specific guidance on high-temperature applications.
• Can I use the SRR7045-121M in a high-vibration environment?
  Yes, the SRR7045-121M is designed to withstand vibrations. Bourns specifies a vibration test per IEC 60068-2-6, which ensures the component can operate reliably in environments with vibrations up to 10 G peak acceleration. However, it's essential to follow proper mounting and soldering techniques to ensure the component remains securely attached to the PCB.
• What is the recommended soldering profile for the SRR7045-121M?
  Bourns recommends a soldering profile with a peak temperature of 260°C (500°F) and a dwell time of 3-5 seconds. It's essential to follow a controlled soldering process to prevent damage to the component. Consult with Bourns' application engineers for specific guidance on soldering profiles.
• How does the SRR7045-121M perform in humid environments?
  The SRR7045-121M is designed to operate in humid environments, but it's essential to follow proper conformal coating and sealing techniques to prevent moisture ingress. Bourns recommends following the IPC-J-STD-001 standard for soldering and the IPC-A-610 standard for acceptability of electronic assemblies.