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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

STMicroelectronics FERD40H100SFP

Name: FERD40H100SFP
Brand: STMicroelectronics
SKU: FERD40H100SFP
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FERD40H100SFP

Manufacturer:: STMicroelectronics

Category:: Single Diodes

Package:: TO-220-3 Full Pack

Datasheet:: FERD40H100SFP.pdf

Description:: DIODE FERD 100V 40A TO220FPAB

Quantity:: RFQ Add To RFQ list

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Inventory:2,359

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Product details

Overview

FERD40H100SFP from STMicroelectronics is a 100 V, 40 A field-effect rectifier diode in TO-220FPAB package, featuring low forward voltage (0.325 V typ. at 40 A, 125 °C), stable leakage current over temperature and reverse voltage, and optimized thermal resistance (R_th(j-c) = 3.3 °C/W). It is engineered for high-efficiency, thermally constrained AC/DC adapters and battery chargers.

For engineers reviewing the FERD40H100SFP datasheet, FERD40H100SFP pinout, FERD40H100SFP application, or FERD40H100SFP equivalent, key selection criteria include junction-to-case thermal resistance, VF/IR trade-off stability across 25–125 °C, peak surge rating (440 A), and ECOPACK®2 compliance for environmentally regulated power supplies.

Technical Context

This field-effect rectifier uses ST's patented silicon process to decouple forward voltage and reverse leakage dependence on temperature-reducing thermal runaway risk in high-density power converters. Its low R_th(j-c) (3.3 °C/W) and high I_F(AV) (40 A) enable compact heatsink designs without derating at elevated ambient temperatures.

Unlike conventional Schottky or fast recovery diodes, it delivers stable conduction loss (P ≈ 0.420 × I_F(AV) + 0.009 × I_F(RMS)²) and reverse loss behavior up to 125 °C, with IR remaining ≤12 mA at V_R = V_RRM and T_j = 125 °C-critical for unattended charging systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse blocking voltage; supports 85–265 VAC input with margin in universal-input adapters.
I_F(AV)	40 A - Average forward current at δ = 0.5 square wave; enables single-diode operation in 100–150 W DC/DC outputs.
V_F(typ.)	0.325 V @ 40 A, 125 °C - Low conduction loss reduces heat generation by >30% vs. standard fast recovery diodes at same current.
I_FSM	440 A @ 10 ms sinusoidal - Withstands inrush surges in offline SMPS without failure during cold-start or line transients.
T_j(max)	175 °C - Enables reliable operation in sealed enclosures where case temperature exceeds 100 °C under full load.
R_th(j-c)	3.3 °C/W - Junction-to-case thermal resistance for TO-220FPAB; allows direct mounting to heatsink with minimal thermal interface resistance.
ECOPACK®2	Compliant - Meets RoHS, halogen-free, and lead-free soldering requirements for global consumer electronics certifications.

Pinout & Package

Package: TO-220FPAB - Full-pack, insulated tab variant with integrated plastic barrier between metal tab and leads; designed for PCB-mount applications requiring electrical isolation of the cathode tab. Dimensions: L3 = 28.6–30.6 mm, H = 10.0–10.4 mm, tab diameter = 3.0–3.2 mm.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Input terminal for forward conduction path	Connected to AC side or transformer secondary; carries full load current with minimal voltage drop.
Cathode (Lead 2)	Output terminal for forward conduction path	Connected to output capacitor or DC bus; electrically isolated from heatsink via insulated tab.
Tab (Cathode)	Thermal and electrical cathode connection	Provides primary heat dissipation path; must be mounted to heatsink with insulating washer or pad to maintain isolation.

Key Features

Feature	Design Value
ST patented rectifier process	Enables best-in-class VF/IR balance for given die area-reducing silicon cost and footprint while maintaining reliability.
Stable leakage current over reverse voltage	IR ≤12 mA at V_R = 100 V and T_j = 125 °C-minimizes standby power loss and improves no-load efficiency in energy-star-compliant adapters.
Low forward voltage drop	V_F = 0.325 V (typ.) at 40 A, 125 °C-lowers conduction losses by ~40% vs. comparable fast recovery diodes, easing thermal design.
High-frequency operation	Capable of switching at >100 kHz with low reverse recovery charge (Q_rr not specified but implied by field-effect architecture)-supports high-frequency PFC and LLC topologies.
ECOPACK®2 compliance	Halogen-free, RoHS-compliant epoxy and lead-free terminations-meets IEC 61215, UL 62368-1, and China RoHS II requirements for consumer power supplies.

Applications

Adapter Power Supply

Gaming Console PSU

Use Scenario: Universal-input 90–264 VAC adapter delivering 12–20 VDC at up to 150 W.

IC Role / Device Role / Timing Role: Output rectifier in synchronous or quasi-resonant flyback converter.

Use Value: Low V_F and stable IR reduce no-load consumption and improve average efficiency across load range (10–100%).

Use Scenario: High-power internal AC/DC supply for gaming console motherboard and GPU rail.

IC Role / Device Role / Timing Role: Secondary-side rectifier in LLC resonant converter operating at 200–500 kHz.

Use Value: Thermal robustness (T_j(max) = 175 °C) prevents derating under sustained 40 A loads in confined chassis airflow.

Battery Charger

DC/DC Converter

Use Scenario: Fast-charging wall adapter for USB PD 3.0+ devices (e.g., laptops, tablets).

IC Role / Device Role / Timing Role: Primary rectifier in active-clamp forward or asymmetrical half-bridge topology.

Use Value: Reduced thermal runaway risk ensures safety certification (UL/EN 62368-1) without complex thermal monitoring circuitry.

Use Scenario: Isolated 48 V–12 V intermediate bus converter in telecom or server power distribution.

IC Role / Device Role / Timing Role: Output rectifier in phase-shifted full-bridge configuration.

Use Value: 3.3 °C/W R_th(j-c) enables direct heatsink mounting with <15 °C temperature rise at full load-eliminating need for forced air.

Availability

FERD40H100SFP is available at Aetrix Electronics and suitable for adapter power supplies, gaming console PSUs, and battery chargers requiring stable component supply, long-term lifecycle support, and ECOPACK®2-compliant sourcing.

Supply support for FERD40H100SFP 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, specializing in power management, analog, microcontrollers, and automotive ICs with vertical manufacturing capability.

The FERD40H100SFP belongs to ST's Field-Effect Rectifier (FERD) product line-designed specifically to replace Schottky and fast recovery diodes in high-efficiency, thermally constrained AC/DC and DC/DC power conversion.

FAQ

What is the maximum allowable case temperature for continuous operation?

The device supports continuous operation with case temperature up to 125 °C when mounted on a heatsink with thermal resistance ≤3.3 °C/W. At T_c = 125 °C and I_F(AV) = 40 A, junction temperature remains within 175 °C limit assuming R_th(j-c) = 3.3 °C/W and no additional thermal interface resistance.

Is FERD40H100SFP pin-compatible with standard TO-220AB rectifiers?

No-FERD40H100SFP uses TO-220FPAB package with insulated tab and different lead spacing (L3 = 28.6–30.6 mm vs. TO-220AB's L30 = 28.90 mm typ.). Pin assignment (Anode–Cathode–Tab) matches, but mechanical mounting and isolation requirements differ; PCB layout must accommodate insulated tab clearance.

How does its reverse leakage compare to conventional fast recovery diodes at 125 °C?

At T_j = 125 °C and V_R = 100 V, FERD40H100SFP exhibits IR ≤12 mA (max), whereas typical fast recovery diodes exceed 50 mA under identical conditions. This lower IR directly reduces standby power loss and improves light-load efficiency in energy-sensitive applications.

Can it be used in place of a Schottky diode in a 100 V design?

Yes-its 100 V V_RRM and 0.325 V V_F at 40 A/125 °C match or exceed performance of many 100 V Schottky diodes, while offering superior thermal stability and higher T_j(max) (175 °C vs. typically 150 °C for Schottky), making it suitable for higher ambient environments.

FERD40H100SFP Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: EconoPACK™ 2

Package/Case:: TO-220-3 Full Pack

Packaging:: Tube

Product Status:: Active

Technology:: FERD (Field Effect Rectifier Diode)

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 40A

Voltage - Forward (Vf) (Max) @ If:: 675 mV @ 20 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 190 µA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-220FPAB

Operating Temperature - Junction:: 175°C (Max)

FERD40H100SFP FAQ

1.How can I place an order for FERD40H100SFP through Aetrix?

Please submit a Request for Quotation (RFQ) for FERD40H100SFP on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for FERD40H100SFP reliable?

The price and inventory of FERD40H100SFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FERD40H100SFP is usually 5 days.

3.What payment methods are accepted for FERD40H100SFP?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FERD40H100SFP transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FERD40H100SFP?

FERD40H100SFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FERD40H100SFP order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for FERD40H100SFP?

For technical support, including FERD40H100SFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FERD40H100SFP requirements.

6.How does Aetrix verify that FERD40H100SFP is sourced from the original manufacturer or authorized distributors?

All FERD40H100SFP products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that FERD40H100SFP meets industry standards.

7.What is the process for return or replacement of FERD40H100SFP?

All FERD40H100SFP units undergo pre-shipment inspection (PSI). If there is an issue with FERD40H100SFP, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The FERD40H100SFP part is unused and in its original packaging.

Return procedure for FERD40H100SFP:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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