3-108-439 - SCHURTER

3-108-439 Frequently Asked Questions (FAQs)

• What is the recommended PCB layout and spacing for the 3-108-439 fuse?
  Schurter recommends a minimum PCB spacing of 2mm around the fuse to ensure safe and reliable operation. A larger spacing is recommended for high-voltage or high-current applications. It's also important to follow the recommended PCB layout guidelines to minimize thermal and electrical stress on the fuse.
• Can the 3-108-439 fuse be used in high-temperature environments?
  The 3-108-439 fuse is rated for operation up to 125°C, but its performance may degrade at higher temperatures. Schurter recommends derating the fuse's current rating by 1.5% per degree Celsius above 85°C. For high-temperature applications, consider using a fuse with a higher temperature rating or consulting with Schurter's application engineers.
• How does the 3-108-439 fuse respond to inrush currents?
  The 3-108-439 fuse is designed to handle inrush currents, but its response time may vary depending on the specific application. Schurter recommends consulting the fuse's time-current characteristic curve to determine its response to inrush currents. In general, the fuse will respond faster to higher inrush currents, but may not respond as quickly to lower inrush currents.
• Can the 3-108-439 fuse be used in high-vibration or shock-prone environments?
  The 3-108-439 fuse is designed to meet the requirements of IEC 60127-1 and IEC 60127-2, which include vibration and shock testing. However, it's still important to ensure that the fuse is properly mounted and secured to the PCB to prevent damage or dislodging due to vibration or shock.
• What is the recommended soldering profile for the 3-108-439 fuse?
  Schurter recommends a soldering profile with a peak temperature of 260°C and a dwell time of 3-5 seconds. The soldering process should be done in accordance with the IPC J-STD-020 standard to ensure reliable and consistent connections.