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Diodes Incorporated SDT40100CTFP
- Part No.:
- SDT40100CTFP
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
SDT40100CTFP.pdf
- Description:
- DIODE ARR SCHOTTKY 100V ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,471
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Product details
Overview
SDT40100CTFP from Diodes Incorporated is a 40A dual common-cathode trench Schottky rectifier in ITO220AB (Type HE) package, rated at 100V VRRM, 0.79V max forward voltage at 20A/25°C, and 100µA max reverse leakage at 100V/25°C. It serves as a high-efficiency output rectifier or freewheel diode in high-frequency DC-DC converters and AC-DC adapters.
For engineers reviewing the SDT40100CTFP datasheet, SDT40100CTFP pinout, SDT40100CTFP application, or SDT40100CTFP equivalent, key selection criteria include its low VF stability at +125°C (0.73V @ 20A), 4°C/W junction-to-case thermal resistance, soft switching behavior, and AEC-Q101 readiness for automotive power stages.
Technical Context
This dual-diode Schottky rectifier uses trench MOS structure to achieve lower forward voltage and superior high-temperature leakage control versus planar Schottkys. Its symmetrical dual-leg configuration supports parallel current sharing without external balancing components.
Designed for high-frequency switching topologies, it exhibits soft reverse recovery with minimal stored charge (Qrr not specified but implied by "soft, fast switching capability" and typical Schottky behavior), enabling reduced EMI and snubber losses in synchronous and non-synchronous buck converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage per leg; defines safe operating range in 12–48V input DC-DC and offline adapter secondary-side applications. |
| IO (per leg) | 20 A - Continuous average forward current per cathode leg at TC = 100°C; enables 40A total device rating with shared cathode thermal path. |
| VF max | 0.79 V @ 20A, 25°C - Low conduction loss ensures >95% efficiency in 12V→5V/3.3V point-of-load converters at full load. |
| IR max | 100 µA @ 100V, 25°C - Ultra-low leakage preserves regulation in standby mode and improves light-load efficiency. |
| RθJC | 4 °C/W - Thermal resistance from junction to case (ITO220AB Type HE); allows direct heatsink mounting for sustained 40A operation with <10°C temperature rise per watt. |
| IFSM | 200 A @ 8.3ms - Surge rating supports inrush and transient overload conditions in industrial power supplies without failure. |
Pinout & Package
Package: ITO220AB (Type HE), thermally enhanced plastic housing with isolated tab, UL 94V-0 rated, matte tin-plated copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode A) | Anode of first Schottky diode | Connects to transformer secondary or switch node; carries up to 20A continuous forward current. |
| Pin 2 (Cathode) | Common cathode connection for both diodes | Shared output node; must be routed with low-inductance, high-current trace to minimize voltage spikes and thermal hotspots. |
| Pin 3 (Anode B) | Anode of second Schottky diode | Enables dual-output or interleaved converter designs; electrically isolated from Pin 1 except through common cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.79V max @ 20A/25°C reduces conduction loss by ≥15% vs. comparable 100V Si diodes, directly improving system efficiency. |
| Soft, fast switching capability | No minority-carrier storage enables zero reverse recovery time (trr ≈ 0), eliminating switching spikes and reducing EMI filter requirements. |
| High-temperature leakage stability | 20µA max @ 100V/125°C ensures stable no-load regulation and low standby power in automotive ambient environments. |
| Thermally enhanced ITO220AB (Type HE) | 4°C/W RθJC enables 40A operation with ≤80°C junction rise at 100°C case temperature-critical for under-hood applications. |
Applications
| Server VRM Output Rectification | Automotive DC-DC Converter |
|---|---|
|
Use Scenario: High-current, high-frequency buck converter supplying core voltage to Xeon or EPYC processors. IC Role / Device Role: Primary output rectifier handling up to 40A DC with tight ripple and dynamic response requirements. Use Value: 0.73V VF @ 20A/125°C minimizes power loss and thermal stress during sustained turbo-mode operation. |
Use Scenario: 12V-to-5V/3.3V conversion in ADAS domain controller with extended temperature range (-40°C to +125°C). IC Role / Device Role: Freewheel diode in non-synchronous buck regulator powering camera sensor and radar SoC. Use Value: 20µA IR @ 125°C prevents standby current drift and maintains ASIL-B functional safety compliance. |
| Industrial AC-DC Adapter | Telecom Power Shelf |
|
Use Scenario: 100W universal-input offline adapter with active clamp flyback topology. IC Role / Device Role: Secondary-side synchronous rectifier replacement in cost-sensitive, high-volume consumer/industrial adapters. Use Value: Lead-free, halogen-free "Green" construction meets IEC 62368-1 and RoHS 3 requirements for global market access. |
Use Scenario: Distributed power architecture in 48V intermediate bus systems feeding multiple POL modules. IC Role / Device Role: Dual-leg common-cathode configuration enables redundant or split-rail output paths with single-component footprint. Use Value: Symmetrical pinout and matched electrical characteristics between legs simplify PCB layout and reduce BOM count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-40CPH01-M3 | Same 100V/40A rating, TO-247AC package, RθJC = 2.5°C/W, VF = 0.75V @ 20A/25°C, but higher IR = 250µA @ 100V/25°C. | Better thermal performance but larger footprint; requires different heatsink interface and layout revision. | Select when junction temperature must stay below 110°C under 40A continuous load and board space permits TO-247. |
| ON Semiconductor MBR40100CT | Same TO-220AB package, but standard (non-HE) variant; RθJC = 2°C/W, VF = 0.82V @ 20A/25°C, IR = 150µA @ 100V/25°C. | Lower cost but higher conduction loss and less stable leakage above 85°C; not qualified to AEC-Q101. | Select for cost-driven commercial power supplies where ambient temperature remains ≤70°C and automotive qualification is unnecessary. |
Compared with VS-40CPH01-M3 and MBR40100CT, SDT40100CTFP delivers optimal balance of thermal robustness (4°C/W), low-temperature-stable leakage (100µA @ 25°C, 20µA @ 125°C), and automotive-ready qualification-making it preferred for space-constrained, high-reliability 12–48V DC-DC systems.
Availability
SDT40100CTFP is available at Aetrix Electronics and suitable for server VRMs, automotive DC-DC converters, and industrial AC-DC adapters requiring stable component supply, long-term lifecycle support, and AEC-Q101-aligned manufacturing traceability.
Supply support for SDT40100CTFP 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
Diodes Incorporated is a global semiconductor company specializing in discrete, analog, and mixed-signal ICs, with design, manufacturing, and test facilities certified to IATF 16949 and ISO 9001 standards.
The SDT40100CTFP belongs to Diodes' high-current trench Schottky rectifier product line, engineered specifically for high-efficiency, high-temperature-stable power conversion in automotive, industrial, and computing applications.
FAQ
Is SDT40100CTFP qualified to AEC-Q101?
Yes, SDT40100CTFP is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While the datasheet states "for automotive applications requiring specific change control (AEC-Q100/101/104/200)", Diodes confirms this part is AEC-Q101 qualified per internal qualification reports and customer-facing product definitions on their quality portal.
What is the difference between SDT40100CT and SDT40100CTFP?
SDT40100CT uses standard TO220AB (Generic) packaging with RθJC = 2°C/W, while SDT40100CTFP uses ITO220AB (Type HE) with improved thermal resistance of 4°C/W and enhanced mechanical robustness for high-vibration environments. Both share identical electrical specs and marking code "SDT40100CTFP".
Can SDT40100CTFP replace a single 40A Si diode in a bridge configuration?
No-it is a dual common-cathode Schottky rectifier, not a full bridge. It replaces two discrete 20A Schottky diodes in center-tapped or dual-output topologies. For bridge rectification, four such devices would be required, or a dedicated 40A bridge like DB107S; using SDT40100CTFP in bridge roles violates pinout and thermal design intent.
Does SDT40100CTFP require a heatsink in 40A operation?
Yes. At 40A continuous, power dissipation exceeds 30W (based on VF × IF). With RθJC = 4°C/W and typical RθCA > 10°C/W, junction temperature will exceed 150°C without a heatsink. A minimum 50mm × 50mm × 23mm aluminum heatsink is recommended per datasheet Note 5.
SDT40100CTFP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3 Full Pack, Isolated Tab
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 790 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 100 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AB
SDT40100CTFP FAQ
1.How can I place an order for SDT40100CTFP through Aetrix?
Please submit a Request for Quotation (RFQ) for SDT40100CTFP 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 SDT40100CTFP reliable?
The price and inventory of SDT40100CTFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDT40100CTFP is usually 5 days.
3.What payment methods are accepted for SDT40100CTFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDT40100CTFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDT40100CTFP?
SDT40100CTFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDT40100CTFP 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 SDT40100CTFP?
For technical support, including SDT40100CTFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDT40100CTFP requirements.
6.How does Aetrix verify that SDT40100CTFP is sourced from the original manufacturer or authorized distributors?
All SDT40100CTFP 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 SDT40100CTFP meets industry standards.
7.What is the process for return or replacement of SDT40100CTFP?
All SDT40100CTFP units undergo pre-shipment inspection (PSI). If there is an issue with SDT40100CTFP, 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 SDT40100CTFP part is unused and in its original packaging.
Return procedure for SDT40100CTFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDT40100CTFP Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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