STMicroelectronics FERD20L60CG-TR

Overview

FERD20L60CG-TR from STMicroelectronics is a 60 V field-effect rectifier diode in D²PAK package, optimized for high-efficiency, thermally constrained AC/DC adapters and USB-C chargers. It delivers 20 A average forward current (per device), 0.365 V typical forward voltage at 10 A/125 °C, and stable 30 mA reverse leakage at 125 °C/60 V.

For engineers reviewing the FERD20L60CG-TR datasheet, FERD20L60CG-TR pinout, FERD20L60CG-TR application, or FERD20L60CG-TR equivalent, key selection criteria include low conduction loss (P = 0.255 × IF(AV) + 0.032 × IF²(RMS)), junction-to-case thermal resistance of 1.3 °C/W, and suitability for high-frequency switching topologies with minimal thermal derating.

Technical Context

This device employs ST's proprietary field-effect rectifier process to decouple forward voltage (VF) and reverse leakage (IR), achieving superior VF/IR trade-off versus conventional Schottky or fast recovery diodes. Its silicon design enables stable IR across temperature and voltage, with <2% duty-cycle pulse testing validating dynamic conduction behavior.

The D²PAK package provides direct thermal coupling to PCB copper, supporting up to 20 A continuous operation when mounted on ≥35 µm FR4 with ≥20 cm² copper area. Junction temperature is limited to +150 °C, with thermal runaway avoided under condition (dPtot/dTj) < (1/Rth(j-a)).

Key Specifications

Pinout & Package

D²PAK (TO-263) package: surface-mount, single-anode/single-cathode configuration with exposed metal tab (cathode) for thermal and electrical connection. Tab must be soldered to large copper pour for thermal performance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar field-effect rectifier applications.

Compared with STTH20L06S and VS-20CPH06-M3, FERD20L60CG-TR uniquely balances low VF (0.365 V) and low IR (30 mA) at 125 °C, enabling high-efficiency, thermally dense designs where both conduction loss and standby power are simultaneously constrained.

Availability

FERD20L60CG-TR is available at Aetrix Electronics and suitable for USB-C PD adapters, industrial SMPS, laptop AC adapters, and LED driver power stages requiring stable component supply, consistent parametric performance, and long-term production continuity.

Supply support for FERD20L60CG-TR 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, designing and manufacturing microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.

This device belongs to ST's Field-Effect Rectifier (FERD) product line-engineered specifically to replace Schottky and fast recovery diodes in high-efficiency, high-power-density AC/DC and DC/DC converters.

FAQ

What is the cathode connection method for FERD20L60CG-TR?

The exposed metal tab is the cathode (K) and must be soldered to a large PCB copper area for both electrical return and thermal dissipation. Lead 1 is the anode (A); lead 2 is non-functional mechanical support. No internal isolation exists between tab and cathode-direct thermal-electrical coupling is intentional and required for rated performance.

Can FERD20L60CG-TR replace a standard Schottky diode in existing designs?

Yes, but thermal and electrical validation is required: its lower VF reduces conduction loss, but its different IR vs. voltage curve may affect no-load regulation and EMI. Layout must ensure ≥20 cm² of 35 µm copper under the tab; reflow profile must accommodate D²PAK's thermal mass. Electrical substitution is drop-in; thermal redesign is often needed.

What is the maximum recommended PCB copper area for thermal performance?

Per Figure 7 in the datasheet, optimal Rth(j-a) is achieved with ≥35 cm² of 35 µm copper on inner layers connected via ≥6 thermal vias (0.3 mm diameter, 0.8 mm pitch). At 20 cm², Rth(j-a) is ~22 °C/W; at 35 cm², it improves to ~17 °C/W-enabling full 20 A operation at Tamb ≤ 60 °C without forced air.

Does FERD20L60CG-TR require a gate drive or control signal?

No-it is a two-terminal uncontrolled rectifier with no gate, control pin, or bias requirement. It operates passively like a diode: forward conduction occurs when anode voltage exceeds cathode by >0.25 V; reverse blocking occurs up to 60 V. Its "field-effect" designation refers to internal silicon structure-not external controllability.