Taiwan Semiconductor Corporation ES2JFL

Overview

ES2JFL from Taiwan Semiconductor is a 2 A, 600 V super fast surface-mount rectifier in SOD-123FL package, featuring 1.46 V forward voltage at 2 A / 25°C, 35 ns reverse recovery time, and 9 pF junction capacitance. It serves as a freewheeling or output rectifier in high-frequency switching power supplies.

For engineers reviewing the ES2JFL datasheet, ES2JFL pinout, ES2JFL application, or ES2JFL equivalent, key selection criteria include peak reverse voltage rating, thermal resistance (R_θJA = 116 °C/W), reverse leakage (<5 µA @ 25°C), and compatibility with automated SMT placement on standard PCB pads.

Technical Context

This discrete silicon diode uses a glass-passivated PN junction optimized for fast recovery (trr ≤ 35 ns) and low stored charge, enabling efficient operation in DC–DC converters and SMPS operating above 50 kHz. Its single-die configuration and SOD-123FL footprint support compact, high-density board layouts.

The device operates across –55°C to +150°C junction temperature range, with thermal performance characterized on a 5 mm × 5 mm copper pad test board (R_θJL = 81 °C/W, R_θJC = 69 °C/W). Reverse leakage remains under 100 µA at 125°C, supporting stable performance in thermally demanding environments.

Key Specifications

Pinout & Package

SOD-123FL is a compact, surface-mount plastic package with molded UL 94V-0 compound, matte tin-plated leads, and cathode polarity indicated by a band. Weight: 0.016 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH2R06 and MURS260, ES2JFL delivers the lowest forward voltage (1.46 V) among 2 A / 600 V SOD-123FL rectifiers, directly reducing conduction loss and junction temperature rise in thermally sensitive applications.

Availability

ES2JFL is available at Aetrix Electronics and suitable for DC–DC converters, switching inverters, and industrial power supplies requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for ES2JFL 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

Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.

The ES2xFL series is part of TSC's Super Fast Rectifier product line, engineered specifically for high-efficiency, high-frequency switching power conversion in space-constrained SMT applications.

FAQ

What is the maximum junction temperature rating for ES2JFL?

The ES2JFL has a maximum junction temperature (T_J) of +150°C, with operational capability down to –55°C. This wide range supports reliable use in industrial environments where ambient temperatures exceed 70°C and thermal cycling is frequent. The device's R_θJA of 116 °C/W on a standard 5 mm × 5 mm Cu pad allows accurate thermal modeling when designing for this limit. Always refer to the derating curve in the ES2JFL datasheet for current reduction versus temperature.

Is ES2JFL compatible with lead-free reflow soldering processes?

Yes, ES2JFL is fully compatible with lead-free reflow soldering per J-STD-002. Its matte tin-plated leads and SOD-123FL package meet JEDEC moisture sensitivity level 1, meaning it can be placed directly into reflow without pre-baking. The UL 94V-0 molding compound withstands peak reflow temperatures up to 260°C, and the device passes JESD201 Class 1 whisker testing, ensuring long-term solder joint integrity.

How does the junction capacitance of ES2JFL affect high-frequency performance?

The ES2JFL exhibits 9 pF junction capacitance at 1 MHz and 4 V reverse bias - the lowest in the ES2xFL family. This low C_J reduces displacement current during switching transitions, minimizing EMI generation and gate-drive loading in high-frequency circuits. In buck converter output stages, it contributes to faster voltage settling and lower radiated emissions compared to higher-C_J alternatives like ES2DFL (22 pF).

What is the reverse recovery time specification for ES2JFL, and how is it measured?

The ES2JFL reverse recovery time (t_rr) is specified as ≤35 ns under conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This measurement reflects the time required for minority carriers to clear after forward conduction, directly impacting switching loss and voltage overshoot. The value is validated per industry-standard pulse test methods and supports stable operation in converters switching up to 500 kHz.

Does ES2JFL have a cathode marking, and how is polarity identified on the device?

Yes, ES2JFL uses a visible cathode band on the SOD-123FL package body to indicate polarity - the banded end is the cathode terminal. This marking aligns with IPC-7351 standards and is clearly visible under standard AOI inspection. The device's marking code "E2JF" appears adjacent to the band, and the cathode connection must be routed to the higher-potential node in all circuit implementations to ensure proper unidirectional conduction.