STMicroelectronics FERD20H100SFP

Overview

FERD20H100SFP from STMicroelectronics is a 100 V, 20 A field-effect rectifier diode in insulated TO-220FPAB package, optimized for high-efficiency DC/DC converters and MPPT solar charge controllers. It delivers VF(max) = 0.415 V at 2 A/25 °C, IR(max) = 140 µA at 100 V/25 °C, Tj(max) = 175 °C, and Rth(j-c) = 3.8 °C/W - enabling stable operation under thermal stress in confined enclosures.

For engineers reviewing the FERD20H100SFP datasheet, FERD20H100SFP pinout, FERD20H100SFP application, or FERD20H100SFP equivalent, key selection criteria include low forward voltage drop at high temperature, reduced thermal runaway risk due to weak VF/IR temperature dependency, and 2000 VRMS insulation rating for safety-critical AC-DC adapter designs.

Technical Context

This device uses ST's proprietary field-effect rectifier technology to decouple forward voltage (VF) and reverse leakage (IR) dependencies on junction temperature - unlike conventional Schottky diodes where both degrade sharply with rising Tj. Its structure enables stable conduction loss calculation via P = 0.415 × IF(AV) + 0.019 × IF²(RMS).

The TO-220FPAB variant integrates an electrically insulated metal tab rated at 2000 VRMS (sine), allowing direct mounting to grounded heatsinks without isolation hardware. Thermal resistance junction-to-case is 3.8 °C/W, and maximum operating junction temperature is 175 °C under validated (dPtot/dTj) < (1/Rth(j-a)) conditions.

Key Specifications

Pinout & Package

TO-220FPAB package features three terminals: Anode (pin 1), Cathode (pin 2), and electrically insulated metal tab (pin 3, thermally connected to die backside but isolated at 2000 VRMS). Mounting torque must be 0.55 N·m (max 0.70 N·m) to ensure thermal contact without cracking the epoxy body.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage rectifier applications.

Compared with STTH2010D and SS20100CT, FERD20H100SFP uniquely balances low VF, ultra-low IR, 175 °C operation, and built-in 2000 VRMS insulation - making it the only choice for thermally constrained, safety-certified, high-efficiency 100 V rectification.

Availability

FERD20H100SFP is available at Aetrix Electronics and suitable for notebook AC adapters, LED lighting drivers, MPPT solar charge controllers, and industrial DC/DC converters requiring stable component supply across multi-year production cycles.

Supply support for FERD20H100SFP 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, Switzerland, designing and manufacturing silicon solutions for automotive, industrial, and power management markets since 1987.

FERD20H100SFP belongs to ST's Field-Effect Rectifier (FERD) product line - engineered specifically to replace Schottky diodes in 60–200 V applications where thermal stability, low leakage, and high-temperature reliability are mandatory.

FAQ

What is the maximum recommended mounting torque for FERD20H100SFP?

The TO-220FPAB package specifies a recommended torque of 0.55 N·m with a maximum allowable value of 0.70 N·m. Exceeding this risks cracking the epoxy body or degrading thermal interface integrity. ST validates thermal performance only within this torque range, and mechanical stress beyond 0.70 N·m may cause latent interfacial delamination under thermal cycling.

Can FERD20H100SFP replace a standard Schottky diode in a 100 V design?

Yes - FERD20H100SFP is explicitly positioned as a Schottky replacement in 100 V applications. Its field-effect architecture provides lower VF than many 100 V Schottkys (e.g., 0.415 V vs. 0.55 V), plus dramatically lower IR (140 µA vs. >1 mA) and higher Tj(max) (175 °C vs. 150 °C), reducing thermal runaway risk in high-ambient environments.

Is the insulated tab rated for continuous 2000 VRMS or just test voltage?

The 2000 VRMS rating is a certified insulation withstand voltage per IEC 60747-5-1, verified during type testing of the TO-220FPAB package. It applies to continuous sinusoidal AC voltage at 50/60 Hz, not just short-duration hipot tests. ST guarantees this rating across the full -65 °C to +175 °C storage temperature range.

How does the VF/IR trade-off improve system-level reliability?

Unlike Schottky diodes whose VF decreases but IR increases exponentially with temperature, FERD20H100SFP exhibits weak VF/IR temperature coupling. This flattens the positive feedback loop that causes thermal runaway - enabling stable operation at 175 °C junction temperature without active derating, even in sealed enclosures with limited airflow.