1PS79SB17,115

Overview

The Nexperia 1PS79SB17 is a planar low capacitance Schottky barrier diode housed in an SOD523 (SC-79) ultra-small flat lead Surface-Mounted Device plastic package. It features a maximum reverse voltage of 4 V and a forward current rating of 30 mA. The device exhibits very low diode capacitance, typically 0.8 pF at 0 V reverse bias and 1 MHz frequency. Forward voltage characteristics include a typical value of 300 mV at 0.1 mA pulsed current and 470 mV at 10 mA pulsed current. Reverse current is limited to 250 nA at 3 V reverse voltage. The component is qualified according to AEC-Q101 standards for automotive applications.

Feature Summary

• Very low diode capacitance suitable for high-frequency signal integrity
• Very low forward voltage for efficient power handling
• Ultra small SMD plastic package for space-constrained designs
• Qualified according to AEC-Q101 for automotive reliability

Applications

• Digital applications: Ultra high-speed switching
• Digital applications: Clamping circuits
• RF applications: Diode ring mixer
• RF applications: RF detector
• RF applications: RF voltage doubler

Procurement Notes

Verify the specific ordering suffix against official Nexperia documentation to confirm packaging details such as reel size or tape-and-reel specifications. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Confirm that the AEC-Q101 qualification status meets the specific reliability requirements of the target application environment before finalizing orders.

Selection Notes

Select this component when circuit design requires minimal parasitic capacitance for RF or high-speed digital signals. The 4 V reverse voltage limit dictates suitability for low-voltage logic levels. Evaluate thermal resistance constraints, as the small SOD523 package has a junction-to-ambient thermal resistance of 450 K/W. Consider the low forward voltage drop if minimizing power loss in rectification or clamping paths is critical.

Part Context

This device belongs to the Nexperia 1PS79 series of Schottky barrier diodes. It shares the SOD523 package form factor with other low-capacitance variants in the family. The marking code T2 identifies this specific part number on the component body. It serves as a discrete solution for protection and mixing functions where standard PN junctions would introduce excessive capacitance.

Replacement Considerations

Check datasheets for alternative Schottky diodes in the SOD523 package with comparable reverse voltage and capacitance ratings. Verify pinout compatibility, ensuring cathode and anode positions match the SC-79 outline. Confirm that substitute components meet the same AEC-Q101 automotive qualification if required by the system specification.