Diodes Incorporated US2JDFQ-13

Overview

US2JDFQ-13 from Diodes Incorporated is a 2.0A, 600V ultra-fast recovery surface-mount rectifier in the D-FLAT package, featuring 75ns reverse recovery time, 1.7V max forward voltage at 2.0A, and 5μA max reverse leakage at 25°C. It serves as a high-efficiency AC/DC front-end or DC blocking diode in automotive power supplies and industrial switching converters.

For engineers reviewing the US2JDFQ-13 datasheet, US2JDFQ-13 pinout, US2JDFQ-13 application, or US2JDFQ-13 equivalent, key selection criteria include its AEC-Q101 qualification, 50A non-repetitive surge rating, low-profile 1.1mm height, RoHS- and halogen-free construction, and thermal resistance of 22°C/W junction-to-terminal.

Technical Context

This ultra-fast rectifier uses glass-passivated silicon die to achieve tight control of minority carrier lifetime, enabling 75ns reverse recovery (measured at IF = 0.5A, IR = 1.0A, IRR = 0.25A) and low stored charge. Its D-FLAT package provides low thermal resistance (R_θJT = 22°C/W) and supports high-current operation up to 2.0A average at T_T = +75°C.

The device is rated for 600V peak repetitive reverse voltage with 5μA max reverse leakage at 25°C and 100μA at 100°C, and features a 50A 8.3ms half-sine surge capability-critical for handling line transients in automotive and industrial power rails.

Key Specifications

Pinout & Package

Package: D-FLAT - Low-profile surface-mount package (max height 1.1 mm), molded green compound (UL 94V-0), matte tin–annealed copper leadframe, cathode band marking.

Key Features

Applications

Availability

US2JDFQ-13 is available at Aetrix Electronics and suitable for automotive power management, industrial switching converters, and consumer AC/DC adapters requiring stable component supply, AEC-Q101 compliance, and RoHS-3–conformant sourcing.

Supply support for US2JDFQ-13 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 power, signal integrity, and timing solutions for automotive, industrial, and computing markets.

The US2JDFQ belongs to Diodes' AEC-Q101–qualified ultra-fast rectifier product line, engineered for robustness in harsh-environment power conversion-particularly where fast recovery, surge resilience, and green packaging are mandatory.

FAQ

What is the maximum operating temperature for US2JDFQ-13?

The US2JDFQ-13 has an operating junction temperature range of –55°C to +150°C. Its thermal resistance (R_θJT = 22°C/W) allows sustained 2.0A operation at T_T = +75°C when mounted on standard FR-4 PCB with recommended pad layout. Derating is required above this ambient temperature per Figure 1 in DS38753.

Is US2JDFQ-13 pin-compatible with other D-FLAT rectifiers?

Yes-US2JDFQ-13 uses the standard D-FLAT footprint (E = 3.95–4.60 mm, D = 2.25–2.95 mm, height ≤1.10 mm) defined in Diodes' package outline PDS-1017. It shares mechanical compatibility with US1JDFQ, US3JDFQ, and SB260, but electrical parameters (V_RRM, t_RR, I_O) differ and must be verified per application.

Does US2JDFQ-13 require a heatsink in typical applications?

No external heatsink is required. With R_θJT = 22°C/W and a 2.0A/1.7V power dissipation of ≤3.4W, the junction temperature rise is ~75°C above terminal temperature. Using the recommended 0.2" × 0.25" copper pads (Note 9), it remains within safe limits for most automotive and industrial PCB layouts.

How does US2JDFQ-13 differ from standard fast recovery diodes?

US2JDFQ-13 achieves 75ns reverse recovery-significantly faster than standard fast recovery diodes (typically 250–500ns). This reduces switching loss and EMI in high-frequency converters. It also features AEC-Q101 qualification, 50A surge rating, and halogen-free "Green" packaging not found in generic fast rectifiers.