Nexperia USA Inc. 1PS74SB23,125

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/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 high IF, dual-cathode/dual-anode internal topology, TSOP6 thermal resistance (250 K/W), and AEC-Q101 qualification for under-hood power conversion.

Technical Context

This discrete Schottky diode uses a planar junction structure with guard ring protection to suppress edge breakdown and sustain repetitive surge currents up to 25 A (8.3 ms half-sine). Its low stored charge enables fast recovery without minority-carrier tail, supporting high-frequency operation in SMPS output stages.

The device integrates four anode terminals (pins 1, 3, 4, 6) and two cathode terminals (pins 2, 5) in parallel-confirmed by absolute maximum ratings and pinning table notes-enabling distributed current sharing and reduced effective series resistance in compact layouts.

Key Specifications

Pinout & Package

Package: TSOP6 (SOT457), 6-lead plastic surface-mount package with 0.65 mm pitch, 2.7 mm × 1.7 mm footprint, and single-sided FR4 thermal resistance of 250 K/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with RB055LAM-40TR and SS32-HF, the 1PS74SB23 uniquely combines AEC-Q101 qualification, 1 A/25 V rating, TSOP6 compactness, and paralleled-terminal architecture-making it optimal for space-constrained, high-reliability automotive power rails where both surge immunity and thermal density matter.

Availability

1PS74SB23 is available at Aetrix Electronics and suitable for automotive rectification, DC polarity protection, switched-mode power supplies, and circuit protection applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

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, serving automotive, industrial, and consumer markets with discrete, logic, and MOSFET solutions.

The 1PS74SB23 belongs to Nexperia's AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive power conversion and protection where low VF, fast switching, and surge resilience are mandatory.

FAQ

What is the thermal resistance of the 1PS74SB23 in typical PCB mounting?

The junction-to-ambient thermal resistance (Rth(j-a)) is 250 K/W when mounted on a single-sided FR4 PCB with standard TSOP6 footprint and tin-plated copper. This value assumes free-air convection and no additional copper pour or thermal vias-actual performance improves with enhanced board-level thermal design.

How are the six pins internally connected in the 1PS74SB23?

Pins 1, 3, 4, and 6 are bonded together as a single anode node; pins 2 and 5 are bonded together as a single cathode node. This parallel configuration lowers effective series resistance and distributes surge current across multiple leads, verified in Table 5's IFSM note and pinning diagram.

Is the 1PS74SB23 suitable for high-frequency SMPS operation above 500 kHz?

Yes-its Schottky architecture delivers negligible reverse recovery time (<10 ns), low diode capacitance (100 pF at 4 V), and minimal stored charge, enabling efficient operation in 500 kHz–2 MHz DC-DC converters without tail current losses or excessive ringing.

Does the 1PS74SB23 require external heat sinking in 1 A continuous operation?

No external heatsink is required at Tamb ≤ 55 °C: with Rth(j-a) = 250 K/W and VF ≈ 425 mV, power dissipation is ~425 mW, resulting in ΔTj ≈ 106 K-keeping Tj below 125 °C. At Tamb > 55 °C or with poor airflow, PCB copper area must be increased per Nexperia's thermal guidelines.