Diodes Incorporated BAT54A-7-F

Overview

BAT54A-7-F from Diodes Incorporated is a 30 V, 200 mA surface-mount Schottky barrier diode in SOT23 package, featuring 800 mV max forward voltage at 100 mA, 2 µA max reverse leakage at 25 V, and 5 ns reverse recovery time; used for polarity protection and signal clamping in low-voltage DC-DC converter bias networks.

For engineers reviewing the BAT54A-7-F datasheet, BAT54A-7-F pinout, BAT54A-7-F application, or BAT54A-7-F equivalent, key selection criteria include forward voltage at 100 mA, reverse leakage at 25 V, reverse recovery time, thermal resistance (500 °C/W), and SOT23 mechanical compatibility with high-density PCB layouts.

Technical Context

This Schottky diode uses a planar silicon structure with PN junction guard ring to suppress ESD transients and improve ruggedness without compromising switching speed. Its low barrier height enables sub-800 mV conduction at rated current while maintaining 30 V reverse blocking capability.

The device operates across –65 °C to +150 °C, with thermal derating beginning above 25 °C ambient per the 200 mW power dissipation limit and 500 °C/W junction-to-ambient resistance. Total capacitance remains ≤10 pF at 1 V reverse bias, supporting RF detector and high-speed clamp use cases.

Key Specifications

Pinout & Package

Package: SOT23 (Standard), 3-terminal surface-mount plastic package with matte tin-plated alloy 42 leadframe; dimensions 2.90 × 1.30 × 1.03 mm (L × W × H); moisture sensitivity level 1 per J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBAT54LT1G and BAT54C-7-F, BAT54A-7-F provides optimal balance of low-cost single-diode functionality, JEDEC-qualified reliability, and proven performance in USB and LDO bias protection-making it preferred for cost-sensitive, high-volume consumer electronics where discrete function partitioning is required.

Availability

BAT54A-7-F is available at Aetrix Electronics and suitable for USB port protection, low-voltage LDO bias clamping, RF signal detection, and microcontroller I/O level shifting requiring stable component supply and full RoHS 3 compliance.

Supply support for BAT54A-7-F 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design centers across Asia and manufacturing in China, Taiwan, and the U.S.

The BAT54 series belongs to Diodes' high-reliability Schottky diode product line, engineered specifically for low-loss, fast-switching functions in space-constrained power management and signal conditioning circuits.

FAQ

What is the maximum junction temperature for BAT54A-7-F?

The absolute maximum junction temperature is +150 °C, with operation permitted from –65 °C to +150 °C. Derating begins at 25 °C ambient per the 200 mW power limit and 500 °C/W R_θJA; sustained operation above 125 °C requires thermal analysis of PCB copper area and airflow.

Is BAT54A-7-F suitable for automotive applications?

The BAT54A-7-F is not AEC-Q200 qualified; Diodes offers the automotive-grade BAT54AQ-7-F variant with identical electrical specs but extended qualification testing including temperature cycling, humidity bias, and board-level vibration. Use BAT54AQ-7-F for under-hood or infotainment modules.

How does the PN junction guard ring affect ESD performance?

The integrated guard ring enhances human-body-model (HBM) ESD robustness to ±8 kV without increasing forward voltage or reverse recovery time. It diverts transient energy away from the active Schottky junction, preventing latch-up and permanent degradation during handling or system-level surges.

Can BAT54A-7-F replace BAT54-7-F in existing designs?

Yes-BAT54A-7-F shares identical absolute maximum ratings, electrical characteristics, and SOT23 mechanical footprint with BAT54-7-F. The "A" suffix denotes a specific wafer lot and marking code (KL2), not functional differentiation; both meet DS11005 Rev. 34 specifications and are fully interchangeable.