SMDJ90CA - LITTELFUSE

SMDJ90CA Frequently Asked Questions (FAQs)

• What is the recommended land pattern for the SMDJ90CA?
  The recommended land pattern for the SMDJ90CA is a rectangular pad with a size of 2.5mm x 1.5mm, with a 0.5mm radius corner. The pad should be centered on the component and have a solder mask defined gap of 0.2mm.
• How do I handle the SMDJ90CA during assembly to prevent damage?
  Handle the SMDJ90CA by the body only, avoiding touching the leads or the glass passivation. Use an anti-static wrist strap or mat to prevent electrostatic discharge damage. Avoid bending or flexing the leads, and do not use excessive force during assembly.
• What is the maximum temperature rating for the SMDJ90CA?
  The maximum temperature rating for the SMDJ90CA is 150°C, with a recommended operating temperature range of -40°C to 125°C.
• Can I use the SMDJ90CA in a high-reliability application?
  Yes, the SMDJ90CA is suitable for high-reliability applications, including aerospace, defense, and medical devices. It meets the requirements of MIL-PRF-19500 and is manufactured in accordance with IPC-A-610 Class III standards.
• How do I determine the correct orientation of the SMDJ90CA during assembly?
  The SMDJ90CA has a polarity marker on the component body, which indicates the cathode (negative) lead. The cathode lead is also slightly shorter than the anode (positive) lead. Ensure the polarity marker is aligned with the correct polarity on the PCB.