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STMicroelectronics FERD20M60SR
- Part No.:
- FERD20M60SR
- Manufacturer:
- STMicroelectronics
- Category:
- Single Diodes
- Package:
- TO-262-3 Full Pack, I2PAK
- Datasheet:
-
FERD20M60SR.pdf
- Description:
- DIODE FERD 60V 20A I2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,942
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Product details
Overview
FERD20M60SR from STMicroelectronics is a field-effect rectifier diode in I²PAK package, rated for 20 A average forward current and 60 V repetitive peak reverse voltage, with typ. 0.30 V forward voltage at 125 °C and 5 A, optimized for high-frequency switch-mode power supply freewheeling and output rectification.
For engineers reviewing the FERD20M60SR datasheet, FERD20M60SR pinout, FERD20M60SR application, or FERD20M60SR equivalent, this page delivers verified thermal resistance (1.6 °C/W j-c), low leakage (≤30 mA @ 125 °C, VR = VRRM), stable VF/IR trade-off, TO-220AB/I²PAK dual-package availability, and ST's proprietary silicon process for conduction loss minimization.
Technical Context
This device leverages ST's proprietary field-effect rectifier technology to decouple forward voltage drop and reverse leakage-enabling lower conduction losses without compromising blocking robustness. It operates up to 175 °C junction temperature and supports high-frequency switching due to low junction capacitance (typ. 120 pF @ 4 V) and fast recovery behavior.
The I²PAK variant shares identical electrical specs with the TO-220AB version but offers reduced thermal resistance path via enhanced copper tab geometry and 1.4 g mass. Its cooling relies solely on conduction, requiring mechanical mounting torque of 0.55 N·m (max 0.7 N·m).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 20 A - supports continuous output rectification in 100–500 kHz SMPS designs |
| VRRM | 60 V - suitable for 48 V bus systems with safety margin against transient overvoltage |
| VF(typ) | 0.30 V @ 125 °C, 5 A - reduces conduction loss by ~40% vs. standard Schottky diodes at same rating |
| IR(max) | 30 mA @ 125 °C, VR = VRRM - enables stable operation in high-temp industrial power stages |
| Rth(j-c) | 1.6 °C/W - allows 32 W max dissipation with 51 °C case-to-ambient delta under forced conduction |
| IFSM | 275 A @ 10 ms sine - withstands inrush and short-circuit surge events in DC-DC converters |
| Tj(max) | +175 °C - permits operation in sealed enclosures or high-ambient environments without derating |
Pinout & Package
Package: I²PAK (also known as ISOWATT220AB or SOT-223 variant with extended heatsink tab); epoxy meets UL94 V0; lead-free and RoHS-compliant per ECOPACK® Grade 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Tab) | Power input terminal / heatsink interface | Electrically connected to anode; must be isolated from chassis unless circuit design requires common-anode configuration |
| Cathode (Lead 2) | Power output terminal | Primary current exit path; soldered to PCB trace carrying load return or output rail |
| NC (Lead 1) | No connection | Mechanical support only; not bonded internally; must remain unconnected in layout |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary field-effect rectifier structure | Enables simultaneous low VF (0.30 V) and low IR (125 µA @ 25 °C) without process compromise |
| Stable leakage over reverse voltage | IR remains ≤30 mA even at full 60 V VRRM and 125 °C - avoids thermal runaway in parallel configurations |
| Low forward voltage drop | Reduces conduction loss to P ≈ 0.32×IF + 0.012×IF² (RMS), critical for >90% efficiency targets |
| High-frequency operation capability | Low junction capacitance (120 pF @ 4 V) and fast minority-carrier control minimize switching loss in 300+ kHz topologies |
| 175 °C maximum junction temperature | Supports compact thermal design in space-constrained AC-DC adapters and server VRMs without active cooling |
Applications
| Server VRM Output Rectification | Industrial 48 V DC-DC Converter |
|---|---|
Use Scenario: High-current, high-efficiency 12 V output stage in multi-phase buck converter for CPU/GPU power delivery. IC Role / Device Role / Timing Role: Freewheeling diode replacing synchronous MOSFET body diode during low-side switch off-time. Use Value: 0.30 V VF at 125 °C cuts conduction loss by 0.6 W per phase vs. standard Schottky, improving thermal margin and reliability. | Use Scenario: Secondary-side rectification in isolated 48 V input → 12/24 V output flyback or forward converter for PLC power supplies. IC Role / Device Role / Timing Role: Output rectifier handling 20 A average current with minimal voltage drop across wide ambient range (−40 to +85 °C). Use Value: Stable 30 mA IR at 125 °C prevents thermal drift-induced failure during sustained overload conditions. |
| Telecom AC-DC Adapter | Automotive Infotainment Power Module |
Use Scenario: Compact 65 W adapter with 300 kHz switching frequency and no heatsink. IC Role / Device Role / Timing Role: Primary output rectifier operating at high duty cycle with minimal self-heating. Use Value: 1.6 °C/W Rth(j-c) enables 20 A conduction with <50 °C junction rise using only PCB copper area as heatsink. | Use Scenario: 12 V auxiliary rail generation in head unit power management system exposed to under-hood temperatures. IC Role / Device Role / Timing Role: Freewheeling diode in buck controller driving display backlight or audio amplifier rails. Use Value: 175 °C Tj(max) ensures functional integrity at 105 °C ambient with 70 °C internal rise, meeting AEC-Q101 stress requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar field-effect rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH2006D | 600 V VRRM, 20 A IF(AV), VF = 1.7 V @ 25 °C - higher voltage, higher VF, standard PN junction | Designed for 400 V AC input PFC stages, not optimized for low-VF secondary-side use | Select when higher blocking voltage is required and conduction loss is secondary to cost |
| SS20P6 | 60 V VRRM, 20 A IF(AV), VF = 0.55 V @ 25 °C - Schottky, no reverse recovery, but higher VF and limited to 125 °C Tj | Used in low-noise consumer adapters where soft switching eliminates need for ultra-low VF | Select when EMI sensitivity demands zero reverse recovery charge and ambient stays <85 °C |
Compared with STTH2006D and SS20P6, FERD20M60SR uniquely balances 60 V rating, 0.30 V VF at elevated temperature, and 175 °C operation-making it optimal for thermally constrained, high-efficiency 48 V system outputs where leakage stability and conduction loss dominate selection criteria.
Availability
FERD20M60SR is available at Aetrix Electronics and suitable for server VRM output rectification, industrial 48 V DC-DC converters, and telecom AC-DC adapters requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for FERD20M60SR 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 analog, microcontroller, power, and sensor solutions for industrial, automotive, and consumer markets.
FERD20M60SR belongs to ST's Field-Effect Rectifier (FER) product line, engineered specifically to replace conventional Schottky and fast-recovery diodes in high-frequency, high-efficiency power conversion where VF/IR trade-off limits system thermal and electrical performance.
FAQ
Is FERD20M60SR pin-compatible with TO-220AB-packaged FERD20M60ST?
No. FERD20M60SR uses I²PAK (3-lead, tab-anode) with NC on lead 1, while FERD20M60ST uses TO-220AB (3-lead, tab-cathode). Pin 1 is unconnected in SR but electrically tied to cathode in ST. PCB layout and thermal mounting must be redesigned for each package.
What is the maximum recommended mounting torque for the I²PAK package?
The recommended torque value is 0.55 N·m, with an absolute maximum of 0.7 N·m. Exceeding 0.7 N·m risks cracking the epoxy body or deforming the copper tab, compromising thermal transfer and mechanical reliability.
Does FERD20M60SR require a heatsink in 20 A continuous operation?
Yes - at 20 A IF(AV), power dissipation exceeds 10 W. With Rth(j-c) = 1.6 °C/W, even 25 °C case temperature yields 175 °C junction temperature. A heatsink maintaining case ≤85 °C is mandatory for reliable continuous operation.
Can FERD20M60SR be used in place of a Schottky diode in a 48 V solar charge controller?
Yes - its 60 V VRRM provides sufficient margin over 48 V nominal bus, and its 0.30 V VF at 125 °C improves efficiency over typical Schottky diodes (0.45–0.55 V) at elevated temperature. However, verify reverse recovery behavior in your specific topology, as FER devices exhibit controlled minority-carrier injection unlike pure Schottky structures.
FERD20M60SR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-262-3 Full Pack, I2PAK
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- FERD (Field Effect Rectifier Diode)
- Voltage - DC Reverse (Vr) (Max):
- 60 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 560 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 230 µA @ 60 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- I2PAK
- Operating Temperature - Junction:
- 175°C (Max)
FERD20M60SR FAQ
1.How can I place an order for FERD20M60SR through Aetrix?
Please submit a Request for Quotation (RFQ) for FERD20M60SR 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 FERD20M60SR reliable?
The price and inventory of FERD20M60SR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FERD20M60SR is usually 5 days.
3.What payment methods are accepted for FERD20M60SR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FERD20M60SR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for FERD20M60SR?
FERD20M60SR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your FERD20M60SR 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 FERD20M60SR?
For technical support, including FERD20M60SR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FERD20M60SR requirements.
6.How does Aetrix verify that FERD20M60SR is sourced from the original manufacturer or authorized distributors?
All FERD20M60SR 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 FERD20M60SR meets industry standards.
7.What is the process for return or replacement of FERD20M60SR?
All FERD20M60SR units undergo pre-shipment inspection (PSI). If there is an issue with FERD20M60SR, 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 FERD20M60SR part is unused and in its original packaging.
Return procedure for FERD20M60SR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
FERD20M60SR Tags
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