Diodes Incorporated APD340VGTR-G1

Overview

APD340VGTR-G1 from Diodes Incorporated is a dual anode, common cathode Schottky barrier rectifier in DO-214AC package, rated for 40 V repetitive peak reverse voltage, 3 A average forward current, and 0.5 V max forward voltage at 3 A and +25°C. It delivers low switching losses and low noise in high-frequency DC-DC converters and polarity protection circuits.

For engineers reviewing the APD340VGTR-G1 datasheet, APD340VGTR-G1 pinout, APD340VGTR-G1 application, or APD340VGTR-G1 equivalent, key selection criteria include its 0.5 V VF at 3 A, 80 A non-repetitive surge rating, +125°C junction temperature, guard-ring stress protection, and RoHS-compliant green packaging.

Technical Context

The APD340VGTR-G1 integrates two Schottky diodes sharing a common cathode terminal, enabling synchronous rectification or dual-path freewheeling in compact power topologies. Its low VF and fast recovery minimize conduction and switching losses in medium-voltage, high-frequency operation (e.g., >100 kHz).

Designed for surface-mount assembly in space-constrained power supplies, it features a thermally optimized DO-214AC package with 75 °C/W junction-to-ambient thermal resistance when mounted per recommended pad layout, supporting continuous 3 A operation up to +125°C junction temperature.

Key Specifications

Pinout & Package

Package: DO-214AC (SMA), molded plastic case with matte tin–annealed copper leadframe, UL 94V-0 rated, moisture sensitivity level 1, weight ≈ 0.062 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SS34 and MBR340, the APD340VGTR-G1 offers the lowest VF (0.5 V) in a dual common-cathode configuration, delivering superior efficiency in space-constrained dual-output or freewheeling designs where thermal coupling and layout simplicity matter.

Availability

APD340VGTR-G1 is available at Aetrix Electronics and suitable for DC-DC converters, polarity protection circuits, and freewheeling applications requiring stable component supply, RoHS compliance, and high-temperature reliability.

Supply support for APD340VGTR-G1 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-performance, cost-optimized components for power management and signal integrity.

The APD340 belongs to Diodes' Schottky rectifier product line, engineered for high-frequency switch-mode power supplies where low VF, fast recovery, and thermal robustness are critical design requirements.

FAQ

What is the maximum junction temperature and how does it affect thermal design?

The APD340VGTR-G1 has a maximum operating junction temperature of +125°C. To maintain this limit, designers must ensure the thermal resistance from junction to ambient (RθJA = 75 °C/W) is met using the recommended DO-214AC pad layout-specifically 5.6 mm × 2.1 mm copper pads with thermal vias-to dissipate up to 1.5 W per diode at full 3 A load.

Is the APD340VGTR-G1 suitable for automotive applications?

The APD340VGTR-G1 is not AEC-Q200 qualified and lacks automotive-specific qualification data such as HTOL or temperature cycling results. While its –50°C to +125°C TJ range supports under-hood ambient temperatures, Diodes Incorporated does not endorse it for safety-critical automotive systems without additional customer validation and derating.

How does the guard-ring feature improve reliability?

The integrated guard-ring structure surrounds the active Schottky junction to reduce electric field crowding at the silicon edge, thereby suppressing premature avalanche breakdown and enhancing resistance to voltage transients and mechanical stress-induced defects-particularly beneficial in high-surge or vibration-prone power converter environments.

Can APD340VGTR-G1 replace a single 3 A Schottky diode in a circuit?

Yes-but only if the circuit uses a common-cathode configuration and both anodes are independently driven. For single-diode replacement, one anode must be unused or tied off, and the cathode used as the output. The device's dual structure adds no penalty in single-use mode, retaining all electrical ratings and thermal performance.