Nexperia USA Inc. 1PS79SB10X

Overview

1PS79SB10X from Nexperia is a planar Schottky barrier diode with integrated guard ring for stress protection, housed in an ultra-small SOD523 (SC-79) surface-mount package. It delivers 30 V reverse voltage rating, 200 mA continuous forward current, and 400 mV forward voltage at 10 mA - enabling low-loss clamping and high-speed switching in space-constrained automotive and portable electronics.

For engineers reviewing the 1PS79SB10X datasheet, 1PS79SB10X pinout, 1PS79SB10X application, or 1PS79SB10X equivalent, key selection criteria include its AEC-Q101 qualification, 10 pF diode capacitance at 1 V, 2 µA reverse leakage at 25 V, thermal resistance of 450 K/W, and cathode-marked SOD523 footprint compatibility.

Technical Context

This discrete Schottky diode uses a planar silicon structure with an integrated guard ring to suppress edge breakdown and improve reliability under transient stress. Its low VF and fast recovery stem from metal–semiconductor junction physics rather than PN-junction charge storage.

Designed for operation up to 125 °C junction temperature, it exhibits predictable VF drift across temperature (240–800 mV from 0.1–100 mA) and stable IR ≤ 2 µA at VR = 25 V, supporting robust voltage clamping in automotive power rails and I/O protection circuits.

Key Specifications

Pinout & Package

Encapsulated in the SOD523 (SC-79) package - measuring 1.2 mm × 0.8 mm × 0.6 mm - this two-terminal device uses a flat, ultra-compact leadless outline optimized for high-density PCB layouts and reflow assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Schottky diode applications.

Compared with NSR0230HT1G and VS-1EQH03-M3/84A, the 1PS79SB10X offers the lowest VF in its class within the smallest SOD523 footprint and AEC-Q101 validation - making it optimal for automotive and ultra-compact portable designs where thermal and space constraints dominate.

Availability

1PS79SB10X is available at Aetrix Electronics and suitable for automotive power management, USB interface protection, portable battery isolation, and high-speed logic translation requiring stable component supply and long-term lifecycle support.

Supply support for 1PS79SB10X includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance, reliable discrete and logic devices for automotive, industrial, and consumer markets.

The 1PS79SB10X belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for high-reliability voltage clamping, reverse polarity protection, and ultra-fast switching in space- and power-constrained automotive ECUs and portable electronics.

FAQ

Is the 1PS79SB10X suitable for automotive under-hood applications?

Yes. It is fully qualified to AEC-Q101 with guaranteed operation from −65 °C to +125 °C junction temperature, and has passed stress tests including high-temperature reverse bias (HTRB), temperature cycling, and ESD per JESD22 standards - making it appropriate for engine control units, body electronics, and ADAS modules.

What does the "F" marking on the device indicate?

The "F" laser marking on the top surface identifies the 1PS79SB10X variant per Nexperia's ordering matrix and corresponds to the SOD523 package with cathode indicated by the bar adjacent to pin 1. This marking is consistent across production lots and aligns with JEDEC SOD-523 mechanical drawings.

How does the guard ring affect PCB layout requirements?

The integrated guard ring enhances edge breakdown immunity but does not alter pad geometry. Layout follows standard SOD523 footprint (1.2 mm × 0.8 mm lands, 0.5 mm pitch). No additional keep-out or spacing beyond IPC-7351B recommendations is required - the guard ring functions internally without external layout dependencies.

Can the 1PS79SB10X replace a standard silicon diode in a 5 V rail clamp?

Yes - with design verification. Its 30 V VR exceeds typical 5 V rail transients, and 400 mV VF reduces power loss by ~60% versus a 1N4148 (≈1 V VF). However, confirm reverse leakage (2 µA vs. <10 nA for silicon) is acceptable in your standby current budget before substitution.