Diodes Incorporated BAT64Q-13-F

Overview

BAT64Q-13-F from Diodes Incorporated is a surface-mount Schottky barrier diode in SOT23 package, rated for 40 V peak reverse voltage, 250 mA average forward current, and 750 mV max forward voltage at 100 mA. It features PN junction guard ring for transient protection and is AEC-Q101 qualified for automotive use.

For engineers reviewing the BAT64Q-13-F datasheet, BAT64Q-13-F pinout, BAT64Q-13-F application, or BAT64Q-13-F equivalent, key selection criteria include low VF at low-to-moderate forward currents (350–750 mV), fast 3.0 ns reverse recovery time, 6.0 pF junction capacitance at 1 V, and compliance with automotive reliability standards including IATF16949 manufacturing and PPAP capability.

Technical Context

This Schottky diode uses a metal-semiconductor junction to achieve low forward voltage drop and fast switching-critical for high-frequency rectification and signal clamping. Its guard ring structure enhances ESD and transient robustness without compromising speed or leakage.

Designed for operation across –55°C to +150°C, it maintains stable performance under thermal stress, with 500°C/W junction-to-ambient thermal resistance on FR-4 board and 250 mW power dissipation limit. Reverse leakage stays ≤2.0 µA at 40 V, supporting low-power bias and sensing roles.

Key Specifications

Pinout & Package

Package: SOT23 - 3-terminal surface-mount plastic package with matte tin-plated alloy 42 leadframe, moisture sensitivity level 1, and UL 94V-0 flammability rating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SBAT54LT1G and NSR0230P2T5G, BAT64Q-13-F uniquely balances 40 V blocking, 250 mA current handling, AEC-Q101 qualification, and 3.0 ns switching-making it the only choice among the three for under-hood automotive signal clamping and OR'ing where both voltage margin and reliability are non-negotiable.

Availability

BAT64Q-13-F is available at Aetrix Electronics and suitable for automotive sensor interfaces, USB port protection, low-voltage power OR'ing, and RF detector circuits requiring stable component supply across production lifecycles.

Supply support for BAT64Q-13-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, specializing in high-reliability components for automotive, industrial, and consumer markets.

The BAT64Q series belongs to Diodes' AEC-Q101-qualified Schottky diode product line, engineered specifically for automotive signal integrity and transient protection in harsh-environment electronic control units.

FAQ

Is BAT64Q-13-F suitable for USB 2.0 data line protection?

Yes. With 6.0 pF junction capacitance at 1 V and ≤2.0 µA reverse leakage at 40 V, it meets USB 2.0 signal integrity requirements while providing secondary ESD protection. Its guard ring structure withstands ±8 kV HBM transients without degradation, and its SOT23 footprint allows compact placement near connectors.

What is the maximum ambient temperature for continuous 250 mA operation?

At TA = +75°C, derating curves show IO remains at 250 mA with proper PCB copper area. Above 75°C, current must be reduced linearly to 0 mA at 150°C ambient. The 500°C/W RθJA assumes standard FR-4 layout per Diodes' recommended pad dimensions-actual thermal performance depends on board copper mass and airflow.

Does BAT64Q-13-F have a defined cathode marking on the package?

Yes. The cathode is marked by a color band or beveled edge on the SOT23 package body, aligned with Pin 2 per Diodes' top-view diagram in DS45354 Rev. 5–2. Polarity is confirmed by the "K65" date-code marking adjacent to the cathode indicator; no separate polarity symbol is used.

Can BAT64Q-13-F replace BAT54 in an existing design?

Only with verification. BAT64Q-13-F has higher VRRM (40 V vs. 30 V), tighter VF distribution (350–750 mV vs. 280–600 mV), and AEC-Q101 qualification-beneficial for automotive upgrades. However, its 3.0 ns tRR is slower than BAT54's typical 2.0 ns, which may affect >200 MHz RF applications. Layout and thermal validation are required.