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Diodes Incorporated SDT20B100D1-13
- Part No.:
- SDT20B100D1-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
SDT20B100D1-13.pdf
- Description:
- DIODE SCHOTTKY 100V 20A TO252
- Quantity:
- Payment:
- Shipping:
Inventory:933
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Product details
Overview
SDT20B100D1-13 from Diodes Incorporated is a 20A, 100V Trench Schottky rectifier in TO252 (DPAK) package, featuring 0.82V max forward voltage at 20A/25°C, <100µA reverse leakage at 100V/25°C, and thermal resistance of 2.5°C/W (junction-to-case). It serves as a high-efficiency freewheel or output rectifier in DC-DC converters and AC-DC adapters operating up to +175°C junction temperature.
For engineers reviewing the SDT20B100D1-13 datasheet, SDT20B100D1-13 pinout, SDT20B100D1-13 application, or SDT20B100D1-13 equivalent, key selection criteria include forward voltage stability across temperature, surge current rating (100A IFSM), junction-to-case thermal resistance, and RoHS-compliant green packaging with matte tin terminals.
Technical Context
This device employs trench-based Schottky architecture to minimize forward conduction loss while maintaining low reverse leakage-critical for high-frequency switching power supplies. Its soft, fast switching behavior reduces EMI generation during turn-off transitions compared to conventional PN diodes.
The TO252 (DPAK) thermally enhanced package enables direct PCB copper pour attachment for efficient heat transfer, supporting continuous 20A operation at case temperatures up to 125°C per derating curve. Junction temperature range spans −55°C to +175°C, enabling use in automotive under-hood and industrial power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 100 V - Maximum repetitive reverse blocking voltage without breakdown |
| IO(AV) | 20 A - Continuous average forward current at TC = 125°C with adequate heatsinking |
| VF(max) | 0.82 V @ 20A, 25°C - Directly determines conduction loss and thermal load in high-current paths |
| IFSM | 100 A - Non-repetitive surge capability for startup or transient overload protection |
| RθJC | 2.5 °C/W - Enables precise thermal design when mounted on 2″×2″ Al board + heatsink |
| IR(max) | 100 µA @ 100V, 25°C - Low leakage preserves efficiency in high-impedance bias networks |
| TJ Range | −55°C to +175°C - Supports extended-temperature operation in automotive and industrial systems |
Pinout & Package
Package: TO252 (DPAK), surface-mount, thermally optimized plastic case with exposed cathode pad. Dimensions conform to JEDEC MO-263AA standard; weight ≈ 0.317 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Lead 1) | Forward current entry terminal | Connected to input/source side of rectification path; requires low-inductance trace routing |
| Cathode (Lead 2 & Exposed Pad) | Forward current exit / Reverse blocking terminal | Electrically and thermally tied to PCB copper pour; primary heat dissipation path |
| Tab / Exposed Pad | Cathode connection and thermal interface | Must be soldered to ≥4 cm² 2-oz copper area for rated 20A performance |
Key Features
| Feature | Design Value |
|---|---|
| Trench Schottky structure | Reduces VF by ~15% vs planar Schottky at 20A, lowering conduction loss in 12V/48V DC-DC outputs |
| Soft, fast switching | Minimizes reverse recovery ringing and EMI in synchronous buck converter freewheel paths |
| High-temperature IR stability | Leakage remains ≤16 µA at 125°C/100V, preserving standby efficiency in hot ambient conditions |
| RoHS & Halogen-free | Meets EU Directive 2011/65/EU and Diodes' "Green" standard (<900ppm Br/Cl, <1000ppm Sb) |
Applications
| Server VRMs | Industrial AC-DC Adapters |
|---|---|
Use Scenario: High-density 48V-to-12V point-of-load conversion in data center server motherboards. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck converter, conducting during low-side FET off-time. Use Value: 0.82V VF at 20A reduces conduction loss by >1.5W vs legacy 1V diodes, easing thermal management in constrained board space. | Use Scenario: Secondary-side rectification in 100W industrial AC-DC power supplies with wide ambient temperature range. IC Role / Device Role / Timing Role: Freewheel diode clamping in flyback or LLC resonant converters. Use Value: Stable 100µA IR at 25°C and ≤16µA at 125°C maintains no-load efficiency and prevents thermal runaway in sealed enclosures. |
| Automotive Infotainment Power | Telecom DC-DC Modules |
Use Scenario: 12V-to-5V/3.3V conversion for head unit processors and display drivers in vehicles. IC Role / Device Role / Timing Role: Blocking diode isolating auxiliary power rails from main battery supply. Use Value: −55°C to +175°C TJ rating ensures reliable operation during engine-off cold soak and under-hood hot soak cycles. | Use Scenario: Input rectification in telecom-grade 48V intermediate bus converters requiring high reliability. IC Role / Device Role / Timing Role: Primary rectifier handling continuous 20A output with minimal voltage drop. Use Value: 2.5°C/W RθJC enables direct thermal coupling to chassis, eliminating need for discrete heatsinks in compact 1U modules. |
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; VF = 0.72V max @ 20A/25°C; TO220AC package; higher RθJC (3.0°C/W) | Requires bolt-on heatsink; unsuitable for space-constrained SMT layouts | Select when mechanical mounting flexibility outweighs PCB area constraints |
| ON Semiconductor SB20100E | Lower IO = 10A; VF = 0.75V max @ 10A/25°C; same TO252 package; lower IFSM (50A) | Not suitable for 20A continuous designs; limited surge margin in high-inrush applications | Select only for cost-sensitive, lower-current (<12A) designs where footprint compatibility is critical |
Compared with VS-20BQ100PBF and SB20100E, SDT20B100D1-13 uniquely balances low VF (0.82V), high surge rating (100A), and SMT-compatible thermal performance (2.5°C/W) in a single TO252 solution-enabling compact, high-efficiency 20A rectification without external heatsinking.
Availability
SDT20B100D1-13 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 support, and RoHS-compliant green packaging.
Supply support for SDT20B100D1-13 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, specializing in high-performance, energy-efficient components for power management and signal integrity.
The SDT20B100D1 belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-current, high-frequency switching power supplies where low VF and thermal robustness are critical.
FAQ
What is the maximum junction temperature for continuous operation?
The SDT20B100D1-13 supports continuous operation up to +175°C junction temperature, verified per its absolute maximum ratings table. Derating begins at TC = 125°C per Figure 4, requiring thermal design that limits case temperature to maintain 20A average current. Operation beyond 175°C risks irreversible parametric shift or bond wire failure.
Is this diode suitable for synchronous rectification replacement?
No-SDT20B100D1-13 is a passive Schottky rectifier, not a synchronous rectifier controller or MOSFET driver. It replaces conventional diodes in freewheel or output positions but cannot substitute for active gate-driven MOSFETs in synchronous topologies. Its soft switching aids EMI reduction but does not enable zero-voltage switching control.
How does the TO252 package affect thermal performance?
The TO252 (DPAK) package uses an exposed cathode pad soldered directly to PCB copper, achieving 2.5°C/W RθJC when mounted on a 2″×2″ aluminum board with heatsink. This outperforms TO220 equivalents by ~20% in thermal resistance, enabling higher current density without discrete heatsinks-critical for slim-profile power modules.
What is the typical reverse recovery time (trr)?
Schottky diodes like SDT20B100D1-13 have no minority-carrier storage, so trr is not specified. Instead, they exhibit soft, fast switching with negligible reverse recovery charge (Qrr ≈ 0), confirmed by low EMI in Figure 2's dynamic characteristics. This eliminates snubber circuits needed with PN diodes in high-frequency converters.
SDT20B100D1-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 820 mV @ 2 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 100 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252 (DPAK)
- Operating Temperature - Junction:
- -55°C ~ 175°C
SDT20B100D1-13 FAQ
1.How can I place an order for SDT20B100D1-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SDT20B100D1-13 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 SDT20B100D1-13 reliable?
The price and inventory of SDT20B100D1-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDT20B100D1-13 is usually 5 days.
3.What payment methods are accepted for SDT20B100D1-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDT20B100D1-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDT20B100D1-13?
SDT20B100D1-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDT20B100D1-13 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 SDT20B100D1-13?
For technical support, including SDT20B100D1-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDT20B100D1-13 requirements.
6.How does Aetrix verify that SDT20B100D1-13 is sourced from the original manufacturer or authorized distributors?
All SDT20B100D1-13 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 SDT20B100D1-13 meets industry standards.
7.What is the process for return or replacement of SDT20B100D1-13?
All SDT20B100D1-13 units undergo pre-shipment inspection (PSI). If there is an issue with SDT20B100D1-13, 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 SDT20B100D1-13 part is unused and in its original packaging.
Return procedure for SDT20B100D1-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDT20B100D1-13 Tags
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