Diodes Incorporated BAS40DW-06-7-F

Overview

BAS40DW-06-7-F from Diodes Incorporated is a dual-channel Schottky barrier diode array in SOT363 package, rated for 40 V peak reverse voltage, 200 mA continuous forward current, and 5.0 ns reverse recovery time. It delivers low forward voltage (380 mV at 1 mA) and ultra-low capacitance (5.0 pF at 0 V), enabling high-speed signal clamping and polarity protection in compact DC-DC converter feedback paths.

For engineers reviewing the BAS40DW-06-7-F datasheet, BAS40DW-06-7-F pinout, BAS40DW-06-7-F application, or BAS40DW-06-7-F equivalent, key selection criteria include its dual common-cathode configuration, 625 °C/W thermal resistance, AEC-Q101 readiness, and compatibility with space-constrained automotive body control modules and USB power switches.

Technical Context

This device integrates two independent Schottky diodes sharing a common cathode terminal (Pin 3), forming a single-package dual-diode solution optimized for bidirectional transient suppression and low-loss DC path steering. Its guard-ringed PN junction enhances ESD robustness to >8 kV HBM without external protection.

The SOT363 package enables surface-mount assembly on dense PCBs while maintaining thermal performance up to +125 °C junction temperature. The 0.006 g mass and 2.0 mm × 2.225 mm footprint support weight- and area-sensitive portable electronics designs.

Key Specifications

Pinout & Package

Package: SOT363 - ultra-small plastic surface-mount package (2.0 mm × 2.225 mm × 0.90 mm height), UL 94V-0 rated, moisture sensitivity level 1, matte tin-plated leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with NSR20F40NXT5G and RB520S-40T1G, BAS40DW-06-7-F uniquely delivers dual common-cathode topology in SOT363, enabling single-component bidirectional clamping with lowest VF and smallest footprint-critical for USB and LIN interface protection where layout density and signal integrity are constrained.

Availability

BAS40DW-06-7-F is available at Aetrix Electronics and suitable for automotive body control modules, USB 2.0 peripheral protection circuits, and DC-DC converter feedback isolation requiring stable component supply across production lifecycles.

Supply support for BAS40DW-06-7-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, manufacturing, and sales operations across Asia, Europe, and North America.

The BAS40 series belongs to Diodes' high-speed Schottky diode product line, engineered specifically for low-voltage, high-frequency signal integrity and power path protection in automotive, computing, and portable electronics.

FAQ

What is the pin configuration of BAS40DW-06-7-F?

BAS40DW-06-7-F uses a six-pin SOT363 package with active connections on Pins 1 (Anode 1), 2 (Anode 2), and 3 (Common Cathode). Pins 4, 5, and 6 are not internally connected per the official Diodes datasheet DS30156 Rev. 14–2, Figure "Top View BAS40DW-06".

Is BAS40DW-06-7-F qualified for automotive use?

Yes - BAS40DW-06-7-F is built in IATF 16949 certified facilities and meets AEC-Q101 stress test requirements for discrete semiconductors. Diodes explicitly states it is suitable for automotive applications requiring PPAP capability and change control, as noted in the "Features" section of DS30156.

How does the guard ring improve reliability?

The integrated PN junction guard ring provides transient voltage suppression and ESD protection by diverting surge currents away from the Schottky metallurgical junction. This structure enables >8 kV HBM ESD rating and improves long-term stability under repetitive 30 V reverse-bias conditions, as validated in Diodes' qualification testing.

Can BAS40DW-06-7-F replace BAS40TW-7-F in existing designs?

No - BAS40TW-7-F is a single-diode variant in the same SOT363 package, whereas BAS40DW-06-7-F contains two diodes with common cathode. Direct replacement would require schematic and layout changes to accommodate the dual-anode topology and eliminate unused pins, as confirmed by comparing their respective marking codes (K43 vs. K46) and functional diagrams in DS30156.