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Diodes Incorporated SDT20120CTFP
- Part No.:
- SDT20120CTFP
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Full Pack, Isolated Tab
- Datasheet:
-
SDT20120CTFP.pdf
- Description:
- DIODE ARR SCHOTTKY 120V ITO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,397
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Product details
Overview
SDT20120CTFP from Diodes Incorporated is a 20A dual common-cathode Trench Schottky rectifier in ITO-220AB package, rated for 120V peak reverse voltage, with max 0.88V forward voltage at 10A/25°C and 80µA reverse leakage at 120V/25°C; used as output rectifier in high-efficiency DC-DC converters and AC-DC adapters.
For engineers reviewing the SDT20120CTFP datasheet, SDT20120CTFP pinout, SDT20120CTFP application, or SDT20120CTFP equivalent, key selection criteria include thermal resistance (4°C/W junction-to-case), high-temperature leakage stability (20µA at 125°C), soft switching behavior, and ITO-220AB mounting compatibility with heatsink interfaces.
Technical Context
This dual-diode Schottky rectifier integrates two independent 10A legs sharing a common cathode terminal, enabling synchronous rectification or dual-output DC-DC topologies. Its trench-based epitaxial structure delivers lower VF and superior IR stability versus planar Schottkys across -55°C to +150°C operating range.
The device exhibits soft reverse recovery with no minority-carrier tail, eliminating snubber requirements in high-frequency switching circuits. Junction capacitance is 1000pF at 4V reverse bias (1MHz), supporting efficient operation up to several hundred kHz in isolated and non-isolated converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 120V - Maximum repetitive reverse blocking voltage per leg; defines safe operating limit in flyback or forward converter secondary side. |
| IO (per leg) | 10A - Average rectified current per diode leg at TC = 75°C; total device rating is 20A with shared cathode configuration. |
| VF max | 0.88V @ 10A, 25°C - Low conduction loss enables >95% efficiency in 12V–48V output DC-DC stages at full load. |
| IR max | 80µA @ 120V, 25°C - Ultra-low leakage preserves light-load efficiency and prevents thermal runaway in high-temp environments. |
| RθJC | 4°C/W - Thermal resistance from junction to case (ITO-220AB); enables 12W dissipation at ΔT = 48°C with standard heatsink. |
| TJ range | -55°C to +150°C - Full automotive-grade temperature capability without derating; qualified for under-hood applications. |
| CJ | 1000pF @ 4V - Low junction capacitance minimizes switching loss and EMI in high-frequency SMPS designs. |
Pinout & Package
Package: ITO-220AB - Insulated through-hole plastic power package with electrically isolated tab, matte tin-plated copper leadframe, UL 94V-0 rated molding compound, and 1.90g mass. Designed for mechanical mounting with insulating washer and thermal interface material.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode A) | Anode of first Schottky diode leg | Connects to transformer secondary or switch node; carries up to 10A continuous forward current. |
| Pin 2 (Cathode) | Common cathode for both diode legs | Shared output node; must be routed with low-inductance path to minimize voltage spikes during commutation. |
| Pin 3 (Anode B) | Anode of second Schottky diode leg | Enables dual-output or interleaved rectification; electrically isolated from Pin 1 except via common cathode. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.65V typ @ 10A/125°C - Reduces conduction loss by ≥30% vs. silicon PN rectifiers in same package, improving thermal margin. |
| Soft, fast switching | No reverse recovery charge (Qrr ≈ 0) - Eliminates switching loss and EMI associated with minority-carrier storage, enabling clean turn-off. |
| High-temperature leakage stability | 20µA @ 120V/125°C - Maintains regulation integrity in sealed enclosures or high-ambient industrial power supplies. |
| Lead-free & Green construction | RoHS 3 compliant, halogen- and antimony-free (<900ppm Br+Cl, <1000ppm Sb) - Meets automotive and industrial environmental compliance mandates. |
Applications
| Server VRM Output Rectification | Industrial DC-DC Converter |
|---|---|
Use Scenario: 48V-to-12V/5V point-of-load conversion in rack-mounted servers with forced-air cooling. IC Role / Device Role / Timing Role: Primary synchronous rectifier replacing MOSFETs in secondary-side synchronous rectification stage. Use Value: 0.88V VF reduces conduction loss by 1.2W per leg vs. Si diode alternative, lowering heatsink size and fan loading. |
Use Scenario: 24V input to ±15V dual-rail isolated supply for PLC I/O modules operating at 70°C ambient. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier delivering independent positive and negative outputs from center-tapped transformer. Use Value: Shared cathode simplifies PCB layout and eliminates need for two discrete diodes with matched thermal paths. |
| Automotive On-Board Charger (OBC) | Telecom AC-DC Adapter |
Use Scenario: Secondary-side rectification in 6.6kW bidirectional OBC using phase-shifted full-bridge topology. IC Role / Device Role / Timing Role: High-reliability output rectifier handling 10A per leg at 100kHz switching frequency with 150°C junction limit. Use Value: 4°C/W RθJC supports direct mounting to aluminum cold plate, enabling passive thermal management in compact OBC housing. |
Use Scenario: 100W universal-input (90–264VAC) adapter for 5G small cell baseband units requiring low standby power. IC Role / Device Role / Timing Role: Output rectifier in LLC resonant converter with light-load ZVS operation. Use Value: 80µA IR at 25°C and 20µA at 125°C ensures <5mW no-load loss, meeting Level VI efficiency requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual common-cathode Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay V20120C-E3/45 | Same 120V/10A per leg, but TO-220AB package (RθJC = 2°C/W); higher VF (0.92V max @ 10A/25°C). | Requires larger heatsink area due to non-insulated tab; unsuitable where electrical isolation is mandatory. | Select when lowest thermal resistance is critical and isolation is handled externally. |
| ON Semiconductor MBR20120CT | Identical pinout and ratings, but uses planar Schottky process; higher IR (120µA @ 120V/25°C) and VF (0.95V max). | Reduced high-temperature reliability in sealed enclosures; may require derating above 100°C ambient. | Choose only if cost sensitivity outweighs thermal and leakage performance requirements. |
Compared with V20120C-E3/45 and MBR20120CT, SDT20120CTFP offers superior high-temperature leakage control and electrical isolation in a thermally optimized ITO-220AB package-critical for automotive and industrial systems where safety and long-term stability are prioritized over minimal cost.
Availability
SDT20120CTFP is available at Aetrix Electronics and suitable for server VRMs, industrial DC-DC converters, and automotive on-board chargers requiring stable component supply, AEC-Q101-aligned quality, and IATF 16949 traceability.
Supply support for SDT20120CTFP 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 manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and the Americas.
This device belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive, industrial, and computing applications where low VF, soft switching, and thermal robustness are essential.
FAQ
Is SDT20120CTFP suitable for automotive applications?
Yes-SDT20120CTFP is manufactured in IATF 16949-certified facilities and meets AEC-Q101 stress test requirements for discrete semiconductors. Its -55°C to +150°C operating range, low IR drift, and halogen-free "Green" construction align with automotive power system specifications, including on-board chargers and DC-DC converters.
What is the difference between SDT20120CT and SDT20120CTFP?
SDT20120CT uses TO-220AB (non-insulated tab), while SDT20120CTFP uses ITO-220AB (electrically insulated tab). Both share identical electrical specs, but the FP variant enables direct mounting to grounded heatsinks without insulation hardware-reducing assembly steps and thermal interface resistance by ~0.5°C/W.
Can SDT20120CTFP replace a single 20A Schottky in a center-tapped transformer design?
No-it is a dual 10A common-cathode device, not a single 20A diode. In center-tapped configurations, it replaces two discrete 10A Schottkys, with Anode A and Anode B connecting to opposite transformer ends and Cathode serving as the shared output. Using it as a single 20A path would exceed per-leg current rating and cause thermal failure.
Does SDT20120CTFP require a heatsink in typical operation?
Yes-under 10A per leg at 25°C ambient, junction temperature exceeds 150°C without heatsinking. With its 4°C/W RθJC, a minimum 25°C/W heatsink is required to maintain TJ ≤ 125°C at full load. Derating curves in Figure 4 confirm 10A maximum at TC = 75°C, necessitating thermal management in all production designs.
SDT20120CTFP 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):
- 120 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 880 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 80 µA @ 120 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220AB
SDT20120CTFP FAQ
1.How can I place an order for SDT20120CTFP through Aetrix?
Please submit a Request for Quotation (RFQ) for SDT20120CTFP 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 SDT20120CTFP reliable?
The price and inventory of SDT20120CTFP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDT20120CTFP is usually 5 days.
3.What payment methods are accepted for SDT20120CTFP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDT20120CTFP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDT20120CTFP?
SDT20120CTFP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDT20120CTFP 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 SDT20120CTFP?
For technical support, including SDT20120CTFP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDT20120CTFP requirements.
6.How does Aetrix verify that SDT20120CTFP is sourced from the original manufacturer or authorized distributors?
All SDT20120CTFP 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 SDT20120CTFP meets industry standards.
7.What is the process for return or replacement of SDT20120CTFP?
All SDT20120CTFP units undergo pre-shipment inspection (PSI). If there is an issue with SDT20120CTFP, 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 SDT20120CTFP part is unused and in its original packaging.
Return procedure for SDT20120CTFP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDT20120CTFP Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
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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