80CNQ035S2

Overview

The SMC Diode Solutions 80CNQ035S2 is a Schottky rectifier diode array configured as one pair of common cathodes. It features a maximum DC blocking voltage of 35 V and an average rectified forward current of 40 A per leg, totaling 80 A per device. The component utilizes the PRM2 package style with pure Sn dipped terminals (6-8 mm height) on a nickel-plated base plate. Electrical characteristics include a typical junction-to-case thermal resistance of 0.5 °C/W per leg and a maximum operating junction temperature of 150°C.

Feature Summary

• Center tap module design optimized for high frequency operation
• Very low forward voltage drop to enhance efficiency
• High purity, high temperature epoxy encapsulation for mechanical strength and moisture resistance
• Guard ring structure provides enhanced ruggedness and long term reliability

Applications

• Switching power supplies
• DC-DC converters
• Free-wheeling diodes
• Reverse battery protection circuits

Procurement Notes

Verify terminal finish specifications carefully when ordering. The 'S2' suffix indicates Pure Sn dipped terminals with a specified height range of 6-8 mm, distinct from standard plating options. Confirm that the mounting surface torque requirements align with the datasheet limits of 40 to 58 Kg-cm to ensure proper mechanical attachment without damaging the package.

Selection Notes

Select this component for applications requiring a center-tapped configuration with high surge capability. The 900 A non-repetitive peak surge current rating supports robust performance in transient conditions. Ensure the thermal management design accounts for the 0.5 °C/W junction-to-case resistance per leg to maintain the junction temperature within the 150°C maximum limit during continuous operation.

Part Context

This part belongs to the 80CNQ Series of Schottky rectifiers manufactured by SMC Diode Solutions. The series includes variants with different voltage ratings such as 35V, 40V, and 45V. The 80CNQ035S2 specifically denotes the 35V rating combined with the PRM2 package and specific terminal finishing. The series is designed for general purpose applications requiring low forward voltage and high reliability.

Replacement Considerations

Direct substitutes within the same series include the 80CNQ035 (standard Nickel plated terminals), 80CNQ035SL (PRM2-SL package), and 80CNQ035SM (PRM2-SM package). Verify that any replacement matches the required terminal finish and package dimensions for the specific PCB or chassis mount application.

FAQ

What does the 'S2' suffix indicate for the 80CNQ035S2?

The 'S2' suffix specifies that the component features Pure Sn dipped terminals with a dipping height between 6 mm and 8 mm.

What is the maximum non-repetitive surge current rating?

The device can withstand a peak one-cycle non-repetitive surge current of 900 A per leg, measured as an 8.3 ms half sine pulse.

Is the 80CNQ035S2 lead-free?

Yes, the datasheet confirms that this is a Pb-Free device.