Nexperia USA Inc. 1PS74SB23,165

Overview

1PS74SB23 from Nexperia is a planar Schottky barrier diode in a TSOP6 (SOT457) surface-mount package, rated for 25 V reverse voltage, 1 A continuous forward current, and 400–450 mV forward voltage at 1 A and 25 °C. It features ultra-fast switching, AEC-Q101 qualification, and parallel-anode/cathode configuration for high-surge-current handling in automotive rectification and polarity protection circuits.

For engineers reviewing the 1PS74SB23 datasheet, 1PS74SB23 pinout, 1PS74SB23 application, or 1PS74SB23 equivalent, key selection criteria include its low VF at 1 A, dual-cathode/dual-anode internal topology, AEC-Q101 compliance, and thermal resistance of 250 K/W in free air on FR4 PCB - all critical for space-constrained, high-reliability DC/DC and battery-protection designs.

Technical Context

This discrete Schottky diode uses a planar junction structure with guard ring protection to suppress edge breakdown and ensure stable reverse leakage (<1 mA at 25 V). Its internal layout connects pins 1/3/4/6 as parallel anodes and pins 2/5 as parallel cathodes, enabling shared current distribution and surge robustness up to 25 A (8.3 ms half-sine).

Thermal performance is defined by R_th(j-a) = 250 K/W under standard FR4 mounting, and electrical behavior is characterized across temperature: VF ranges from 260 mV (100 mA, 25 °C) to ~450 mV (1 A, 25 °C), while IR rises from 80 µA at 20 V to 1 mA at 25 V, both strongly dependent on junction temperature.

Key Specifications

Pinout & Package

Package: TSOP6 (SOT457), plastic surface-mounted device with 6 leads, 3.0 mm × 1.7 mm footprint, 0.95 mm height, and standard reflow/wave soldering land patterns.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSS40201MR6T1G and VS-1EQH02-M3/84A, the 1PS74SB23 uniquely balances AEC-Q101 compliance, 25 V VR, and 400–450 mV VF in TSOP6 - making it the only option qualified for automotive 12 V rectification where both reliability and conduction loss matter.

Availability

1PS74SB23 is available at Aetrix Electronics and suitable for automotive battery protection, 12 V DC/DC converter rectification, and industrial I/O polarity guard applications requiring stable component supply and long-term lifecycle support.

Supply support for 1PS74SB23 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 high-volume, high-reliability essential semiconductors, with leadership in logic, discretes, and MOSFETs for automotive and industrial markets.

The 1PS74SB23 belongs to Nexperia's AEC-Q101-qualified Schottky diode portfolio, engineered specifically for automotive power management where low VF, surge robustness, and thermal stability are mandatory.

FAQ

Is the 1PS74SB23 suitable for synchronous rectification in high-frequency SMPS?

Yes - its ultra-fast recovery time and low 400–450 mV forward voltage at 1 A enable efficient operation in buck converters switching above 500 kHz. The parallel-anode/cathode structure reduces effective series resistance, minimizing conduction loss without requiring active gate drive circuitry.

What does the "P1" marking on the device indicate?

The "P1" marking is the official Nexperia top-side laser mark for the 1PS74SB23, as specified in Table 4 of the datasheet. It identifies the device unambiguously on the SOT457 package and corresponds to the full type number in traceability records and automated optical inspection systems.

How is thermal performance affected when mounted on a double-sided PCB?

While the datasheet specifies R_th(j-a) = 250 K/W on single-sided FR4, doubling copper area (e.g., 2 oz Cu on both sides with thermal vias) typically improves R_th(j-a) by 20–30%. Actual improvement depends on via count, placement, and board stack-up - measured data shows ~180–200 K/W under optimized double-sided conditions.

Can pins 1, 3, 4, and 6 be used independently as separate anodes?

No - pins 1, 3, 4, and 6 are internally bonded together as a single anode node, and pins 2 and 5 are internally bonded as a single cathode node. Using them as independent terminals would cause short circuits or violate absolute maximum ratings and is not supported by the device construction.