SMCJ400A

The SMCJ400A from Littelfuse is a SMCJ series 1500W, surface mount unidirectional transient voltage suppression diode in DO-214AB package. It features excellent clamping capability, low incremental surge resistance, low profile package, moulded plastic body over glass passivated junction, built-in strain relief and fast response time of typically less than 1.0ps from 0Vs to BV minimum. The peak pulse power dissipation (PPPM) is 1500W at TA=25°C, 10/1000µs waveform, 0.01% repetition rate (duty cycle), peak forward surge current of 200A measured on 8.3ms single half sine wave or equivalent square wave and power dissipation is 6.5W on infinite heat sink at TL=50°C. This SMCJ series transient voltage suppression diode is designed specifically to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. It is ideal for the protection of I/O interfaces, VCC bus and other vulnerable circuits.

• Reverse stand off voltage (VR) of 400V and maximum reverse leakage (IR) of 1µA at VR
• Breakdown voltage (VBR) of 447V minimum, 494V maximum at 1mA test current (IT)
• Maximum clamping voltage (VC) of 648V at IPP and maximum peak pulse current (IPP) of 2.3A
• Typical failure mode is short from over specified voltage or current
• UL E230531 approved, plastic package is flammability rated V-0 per UL standard
• IEC-61000-4-2 ESD 30KV (air), 30KV (contact) protection
• Suitable for surface mounted applications to optimize board space
• Operating temperature range from -65°C to 150°C and 260°C/40sec high temperature to reflow soldering
• ESD protection of data lines with IEC 61000-4-2 and EFT protection with IEC 61000-4-4 standard