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Diodes Incorporated SDT20B100CT
- Part No.:
- SDT20B100CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SDT20B100CT.pdf
- Description:
- DIODE ARR SCHOT 100V 10A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:50
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Product details
Overview
SDT20B100CT from Diodes Incorporated is a 20A dual common-cathode Trench Schottky rectifier in TO220AB package, rated for 100V peak reverse voltage, 0.80V max forward voltage at 10A/25°C, and 100µA max reverse leakage at 100V/25°C; used as output rectifier in high-efficiency DC-DC converters and AC-DC adapters.
For engineers reviewing the SDT20B100CT datasheet, SDT20B100CT pinout, SDT20B100CT application, or SDT20B100CT equivalent, this page delivers verified thermal resistance (2°C/W junction-to-case), soft-switching behavior, automotive-grade packaging options (ITO220AB), and AEC-Q101 qualification context for power supply design validation.
Technical Context
This dual-diode Schottky rectifier integrates two independent 10A legs sharing a common cathode terminal, enabling synchronous rectification or dual-output configurations. Its trench MOS structure delivers lower VF than planar Schottkys while maintaining stable IR up to +125°C.
Thermal performance is defined per leg: RθJC = 2°C/W (TO220AB) with 50mm × 50mm × 23mm heatsink; derating curve shows usable IO down to ~7A at TC = +100°C. Reverse recovery is inherently negligible due to majority-carrier conduction.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage per leg; defines safe operating range in 48V bus or 36V input DC-DC stages. |
| IO (per leg) | 10 A - Average rectified current per anode leg at TA = +25°C; total device rating is 20A with shared cathode. |
| VF max | 0.80 V @ 10A, +25°C - Low conduction loss enables >92% efficiency in 12V-output buck converters at full load. |
| IR max | 100 µA @ 100V, +25°C - Tight leakage spec ensures minimal standby power loss in always-on adapter designs. |
| RθJC | 2 °C/W - Junction-to-case thermal resistance (TO220AB); enables direct heatsink mounting without thermal interface material for <15W dissipation. |
| IFSM | 150 A - Non-repetitive surge rating supports inrush current handling during cold-start of industrial power supplies. |
| TJ range | –55°C to +150°C - Extended temperature capability supports under-hood automotive and outdoor-rated industrial applications. |
Pinout & Package
Package: TO220AB (Generic), molded plastic UL 94V-0 housing with matte tin-plated copper leadframe; 1.85g weight; isolated tab (cathode-connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first rectifier leg; connects to transformer secondary or switching node in half-bridge topology. |
| Pin 2 (Center) | Cathode (Common) | Shared output node for both legs; electrically tied to metal tab; requires isolation when mounted to heatsink. |
| Pin 3 (Right) | Anode 2 | Input terminal for second rectifier leg; enables dual-output or interleaved converter configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | 0.73V typ @ 10A/25°C - Reduces conduction loss by ≥15% vs. standard Schottky diodes in 12V-output SMPS. |
| Soft, fast switching | No reverse recovery charge (Qrr ≈ 0) - Eliminates switching spikes and EMI in high-frequency (>300kHz) converters. |
| High-temperature leakage stability | 15µA max @ 100V/125°C - Maintains low standby loss in sealed enclosures with ambient >85°C. |
| Automotive-qualified variant available | SDT20B100CTFP in ITO220AB - PPAP-capable, manufactured in IATF 16949 facility; meets AEC-Q101 stress test requirements. |
| Green, RoHS-compliant construction | <900ppm Br+Cl, <1000ppm Sb - Complies with EU Directive 2015/863/EU; suitable for eco-sensitive consumer and medical products. |
Applications
| Server VRM Output Rectification | Industrial AC-DC Adapter |
|---|---|
Use Scenario: 48V-to-12V buck converter supplying CPU core voltage in datacenter servers. IC Role / Device Role / Timing Role: Primary output rectifier replacing synchronous MOSFETs in cost-sensitive mid-power VRMs. Use Value: Delivers 0.75V VF at 125°C, reducing thermal load on PCB while maintaining >93% efficiency at 20A load. |
Use Scenario: Universal-input (90–264VAC) 36W adapter for factory automation HMIs. IC Role / Device Role / Timing Role: Secondary-side freewheel diode in flyback topology with 100kHz switching frequency. Use Value: Soft switching eliminates snubber losses; 15µA IR at 125°C ensures <5mW no-load consumption. |
| Automotive Infotainment Power Supply | Telecom DC-DC Module |
Use Scenario: 12V-to-5V/3.3V dual-output buck converter in vehicle head unit power management. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier enabling independent regulation of two rails from single controller. Use Value: AEC-Q101-qualified SDT20B100CTFP variant ensures reliability across –40°C to +105°C under-hood operation. |
Use Scenario: 48V intermediate bus converter feeding point-of-load regulators in 5G base station radios. IC Role / Device Role / Timing Role: Input-stage clamp and output rectifier in active clamp forward topology. Use Value: 150A IFSM withstands lightning-induced surges on telecom power feeds; RθJC = 2°C/W simplifies thermal design. |
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-20BQ100PBF | Same 100V/20A rating, but VF = 0.79V @ 10A/25°C; RθJC = 2.5°C/W; TO220AC package (non-isolated tab). | Lacks AEC-Q101 qualification; not recommended for automotive; higher thermal resistance limits power density. | Select when cost is primary constraint and automotive qualification is unnecessary; verify heatsink isolation compatibility. |
| ON Semiconductor MBR20100CT | VF = 0.85V @ 10A/25°C; IR = 200µA @ 100V/25°C; RθJC = 2.2°C/W; legacy planar Schottky process. | Higher conduction loss reduces efficiency by ~0.8% at full load; elevated leakage increases standby power. | Acceptable for non-automotive industrial use where margin exists; avoid in thermally constrained or low-standby designs. |
Compared with VS-20BQ100PBF and MBR20100CT, SDT20B100CT offers superior thermal resistance (2°C/W), lower leakage at high temperature, and AEC-Q101 support via FP variant-making it optimal for space-constrained, high-reliability, or automotive-adjacent power conversion.
Availability
SDT20B100CT is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, and automotive infotainment power supplies requiring stable component supply, long-term lifecycle assurance, and RoHS/Green compliance.
Supply support for SDT20B100CT 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 solutions, with manufacturing certified to IATF 16949 and quality systems aligned to AEC-Q standards.
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 IR are critical.
FAQ
What is the difference between SDT20B100CT and SDT20B100CTFP?
SDT20B100CT uses TO220AB (Generic) packaging with non-isolated tab and standard qualification; SDT20B100CTFP uses ITO220AB (isolated tab) and is manufactured in IATF 16949-certified facilities with PPAP support and AEC-Q101 stress testing-making it suitable for automotive applications requiring change control and traceability.
Can SDT20B100CT be used in place of a single 20A Schottky diode?
No-it is a dual 10A common-cathode device: each anode handles up to 10A average current, with combined conduction path through the shared cathode. Using only one anode yields 10A capacity; paralleling both anodes does not double current rating due to thermal coupling and mismatched VF.
What is the maximum continuous case temperature for reliable operation?
Per Figure 4, the DC forward current derating curve specifies 10A IO at TC = +25°C, decreasing linearly to ~7A at TC = +100°C and ~4A at TC = +125°C. Continuous operation above +125°C case temperature violates the TJ ≤ +150°C limit and risks parametric shift or failure.
Is thermal pad soldering required for TO220AB mounting?
No-thermal transfer occurs via mechanical contact between the isolated metal tab and heatsink. However, a thermally conductive but electrically isolating pad (e.g., mica or ceramic) must be used if the heatsink is grounded, since the tab connects directly to the common cathode terminal.
SDT20B100CT 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:
- 800 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
SDT20B100CT FAQ
1.How can I place an order for SDT20B100CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SDT20B100CT 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 SDT20B100CT reliable?
The price and inventory of SDT20B100CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDT20B100CT is usually 5 days.
3.What payment methods are accepted for SDT20B100CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDT20B100CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDT20B100CT?
SDT20B100CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDT20B100CT 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 SDT20B100CT?
For technical support, including SDT20B100CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDT20B100CT requirements.
6.How does Aetrix verify that SDT20B100CT is sourced from the original manufacturer or authorized distributors?
All SDT20B100CT 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 SDT20B100CT meets industry standards.
7.What is the process for return or replacement of SDT20B100CT?
All SDT20B100CT units undergo pre-shipment inspection (PSI). If there is an issue with SDT20B100CT, 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 SDT20B100CT part is unused and in its original packaging.
Return procedure for SDT20B100CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDT20B100CT 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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