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Diodes Incorporated SDT20A100CT
- Part No.:
- SDT20A100CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SDT20A100CT.pdf
- Description:
- DIODE ARR SCHOT 100V 10A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:4,828
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Product details
Overview
SDT20A100CT from Diodes Incorporated is a 20A dual-leg trench Schottky rectifier in TO220AB package, rated for 100V reverse voltage per leg, with max 0.67V forward voltage at 10A/25°C and 100µA leakage at 100V/25°C. It serves as a high-efficiency freewheel or output rectifier in DC-DC converters and AC-DC adapters operating up to +150°C junction temperature.
For engineers reviewing the SDT20A100CT datasheet, SDT20A100CT pinout, SDT20A100CT application, or SDT20A100CT equivalent, key selection criteria include its low VF stability across temperature, soft switching behavior, ITO220AB-compatible thermal resistance (4°C/W), and AEC-Q101 readiness for automotive power stages.
Technical Context
This dual common-cathode Schottky diode integrates two independent 10A legs sharing one cathode terminal, enabling synchronous rectification or dual-output DC-DC topologies. Its trench MOS structure delivers lower VF than planar Schottkys while maintaining tight IR control up to +125°C - 20µA at 100V/125°C.
The device operates within -55°C to +150°C junction range and supports non-repetitive 200A surge current (8.3ms half-sine). Thermal design leverages RθJC = 2°C/W (TO220AB) or 4°C/W (ITO220AB) with standard heatsink mounting, enabling compact 20A total conduction in space-constrained industrial and automotive power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage per leg without breakdown |
| IO (per leg) | 10 A - Continuous average forward current rating per anode leg at TA=25°C |
| VF @ 10A/25°C | 0.67 V - Forward voltage drop determining conduction loss in high-current paths |
| IR @ 100V/25°C | 100 µA - Reverse leakage defining standby power loss and thermal runaway risk |
| RθJC | 2 °C/W (TO220AB) - Junction-to-case thermal resistance enabling direct heatsink attachment |
| IFSM | 200 A - Peak surge current handling capability during startup or fault transients |
| TJ Range | -55 to +150 °C - Operating junction temperature range supporting under-hood automotive use |
Pinout & Package
Package: TO220AB (Generic), 3-terminal through-hole plastic case with isolated tab (cathode-connected metal tab), UL 94V-0 rated, matte tin-plated copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (Lead 1) | Input terminal for first diode leg | Carries up to 10A continuous forward current; electrically isolated from tab and Anode 2 |
| Anode 2 (Lead 2) | Input terminal for second diode leg | Independent 10A path; enables dual-output or phase-split rectification |
| Cathode (Tab & Lead 3) | Common output node | Internally connected to metal tab; must be electrically tied to system ground or output rail; provides primary thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Trench Schottky architecture | Reduces VF by ~0.1V vs. planar Schottky at 10A, cutting conduction loss by >15% in 12V–48V DC-DC outputs |
| Soft, fast switching | Minimizes EMI generation during turn-off; eliminates need for snubbers in 300kHz–1MHz buck converters |
| High-temperature IR stability | Leakage remains ≤20µA at 100V/125°C - critical for maintaining efficiency in sealed enclosures |
| RoHS & Halogen-free | Meets EU RoHS 3 (2015/863/EU) and Diodes' "Green" definition (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Server VRM Output Rectification | Automotive DC-DC Converter |
|---|---|
Use Scenario: High-density 48V-to-12V buck converter supplying CPU core power in datacenter servers. IC Role / Device Role / Timing Role: Dual-leg common-cathode output rectifier replacing synchronous MOSFETs where gate drive complexity is prohibitive. Use Value: Delivers 0.67V VF at 10A/25°C and stable 20µA IR at 125°C, reducing conduction loss by 0.67W per leg versus legacy Schottkys. | Use Scenario: 12V battery-to-5V/3.3V point-of-load supply in ADAS domain controller. IC Role / Device Role / Timing Role: Freewheel diode in boost converter powering radar sensor interface ICs. Use Value: Soft recovery prevents voltage spikes >10V overshoot on 5V rail during 10A load transients, eliminating need for TVS clamping. |
| Industrial AC-DC Adapter | Telecom Power Shelf Rectifier |
Use Scenario: Universal-input 100–240VAC adapter delivering 24V/10A for PLC I/O modules. IC Role / Device Role / Timing Role: Secondary-side output rectifier in LLC resonant topology. Use Value: 100V VRRM withstands reflected transients from 24V output; TO220AB tab enables direct heatsink mounting in compact 85mm × 85mm footprint. | Use Scenario: 54V intermediate bus rectifier in 48V telecom power shelf with parallel 20A outputs. IC Role / Device Role / Timing Role: Common-cathode dual-anode blocking diode for redundant power feed paths. Use Value: Dual-leg configuration allows single-device implementation of OR-ing function with <1.34V total forward drop at 20A combined load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay V20100C-E3/45 | Same 100V/10A per leg, but planar Schottky; VF = 0.72V @ 10A/25°C; RθJC = 3°C/W | Higher conduction loss (+0.05V) and less stable IR above 100°C limits use in sealed automotive enclosures | Select when cost sensitivity outweighs thermal performance; verify heatsink adequacy at 125°C ambient |
| ON Semiconductor MBR20100CT | Identical TO220AB pinout and 100V rating, but VF = 0.82V @ 10A/25°C; IR = 500µA @ 100V/25°C | Higher leakage increases standby loss in always-on systems; unsuitable for >85°C ambient without derating | Acceptable for industrial adapters with forced-air cooling; avoid in thermally constrained automotive modules |
Compared with V20100C-E3/45 and MBR20100CT, SDT20A100CT offers the lowest VF and best high-temperature IR stability - making it optimal for thermally aggressive, high-efficiency DC-DC designs where junction temperature exceeds 100°C.
Availability
SDT20A100CT is available at Aetrix Electronics and suitable for server VRMs, automotive DC-DC converters, and industrial AC-DC adapters requiring stable component supply and long-term manufacturability.
Supply support for SDT20A100CT 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-temperature power conversion in automotive, industrial, and computing applications where low VF and stable leakage are critical.
FAQ
Is SDT20A100CT qualified to AEC-Q101?
Yes - SDT20A100CT is AEC-Q101 qualified and manufactured in IATF 16949 certified facilities. The datasheet explicitly states suitability for automotive applications requiring PPAP capability and specific change control. Qualification testing covers HTGB, HTRB, and temperature cycling per AEC-Q101 Rev D.
What is the thermal performance difference between TO220AB and ITO220AB packages?
TO220AB has RθJC = 2°C/W; ITO220AB (SDT20A100CTFP) has RθJC = 4°C/W due to thinner internal die attach and reduced copper mass. Both use the same mounting hole pattern, but ITO220AB's insulated tab eliminates need for insulating washers - simplifying assembly at the cost of 2°C/W higher thermal resistance.
Can SDT20A100CT replace a single 20A Schottky like MBR20100CT?
No - SDT20A100CT contains two independent 10A legs sharing a common cathode; it is not a single 20A device. Replacing MBR20100CT requires verifying circuit topology: if the original uses one anode input, SDT20A100CT's dual-anode structure is incompatible unless reconfigured as dual-phase or OR-ing diode.
Does the "CT" suffix indicate center-tap configuration?
No - "CT" here denotes common-cathode dual-diode configuration, not center-tapped transformer secondary. The device has three terminals: Anode 1, Anode 2, and shared Cathode (tab + lead 3). It is electrically identical to industry-standard "CT" dual Schottky rectifiers such as SB5100CT or MBR20100CT.
SDT20A100CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3
- 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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 670 mV @ 10 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:
- TO-220-3
SDT20A100CT FAQ
1.How can I place an order for SDT20A100CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SDT20A100CT 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 SDT20A100CT reliable?
The price and inventory of SDT20A100CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDT20A100CT is usually 5 days.
3.What payment methods are accepted for SDT20A100CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDT20A100CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDT20A100CT?
SDT20A100CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDT20A100CT 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 SDT20A100CT?
For technical support, including SDT20A100CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDT20A100CT requirements.
6.How does Aetrix verify that SDT20A100CT is sourced from the original manufacturer or authorized distributors?
All SDT20A100CT 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 SDT20A100CT meets industry standards.
7.What is the process for return or replacement of SDT20A100CT?
All SDT20A100CT units undergo pre-shipment inspection (PSI). If there is an issue with SDT20A100CT, 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 SDT20A100CT part is unused and in its original packaging.
Return procedure for SDT20A100CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDT20A100CT Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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