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Diodes Incorporated SDT3045VCT
- Part No.:
- SDT3045VCT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SDT3045VCT.pdf
- Description:
- DIODE ARR SCHOTT 45V 15A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:29
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Product details
Overview
SDT3045VCT from Diodes Incorporated is a 30A dual-leg Trench Schottky rectifier with 45V peak reverse voltage, 0.50V max forward voltage at 15A/25°C, 0.5mA max reverse leakage at 45V/25°C, and TO220AB package - used as freewheel or output rectifier in high-efficiency DC-DC converters.
For engineers reviewing the SDT3045VCT datasheet, SDT3045VCT pinout, SDT3045VCT application, or SDT3045VCT equivalent, key selection criteria include low VF stability across temperature, soft switching behavior for EMI control, thermal resistance (1°C/W junction-to-case), and AEC-Q101 readiness for automotive power stages.
Technical Context
This dual-diode Schottky rectifier integrates two independent 15A legs in a single TO220AB thermally optimized package, enabling synchronous or interleaved converter topologies without discrete pairing. Its trench process delivers VF as low as 0.39V at 15A/125°C and IR < 0.1mA at 45V/125°C.
The device exhibits soft reverse recovery (no stored charge) and junction capacitance of ~1000pF at 4V reverse bias (1MHz), supporting high-frequency operation up to 500kHz in buck and flyback designs while minimizing switching losses and ringing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum blocking voltage per leg; sets upper limit for input/output rail voltage in DC-DC stages |
| IO (per leg) | 15 A - Continuous DC current rating per diode leg; supports 30A total dual-leg output in parallel-configured supplies |
| VF max | 0.50 V @ 15A, 25°C - Low conduction loss enables >95% efficiency in 12V→5V/3.3V point-of-load converters |
| IR max | 0.5 mA @ 45V, 25°C - Ultra-low leakage preserves standby power in always-on systems and battery-backed circuits |
| RθJC | 1 °C/W - Enables direct heatsink mounting for sustained 30A operation without derating below 100°C ambient |
| TJ range | –55 to +150 °C - Qualified for under-hood automotive environments and industrial power modules |
Pinout & Package
TO220AB package: 3-terminal through-hole case with isolated metal tab (cathode-connected tab), matte tin-plated copper leadframe, UL 94V-0 molded plastic body, 1.85g mass. Tab is electrically connected to cathode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | Anode of first Schottky diode leg | Connects to switch node in half-bridge or buck converter; requires low-inductance layout |
| Pin 2 (Cathode) | Common cathode for both legs | Electrically tied to metal tab; must be thermally and electrically connected to heatsink/ground plane |
| Pin 3 (Anode 2) | Anode of second Schottky diode leg | Supports dual-output or interleaved topology; independent anode routing required |
Key Features
| Feature | Design Value |
|---|---|
| Low forward voltage drop | VF = 0.39V typ @ 15A/125°C - Reduces conduction loss by ≥30% vs. planar Schottkys at elevated temperatures |
| Soft, fast switching | No reverse recovery charge (Qrr ≈ 0) - Eliminates switching spikes and snubber requirements in high-dV/dt applications |
| High-temperature leakage stability | IR = 55μA @ 45V/125°C - Maintains <100μA leakage across full operating range, critical for low-power standby modes |
| AEC-Q101 qualified | Manufactured in IATF 16949 certified facilities - Meets stress test requirements for automotive power electronics (transient, HTOL, TC) |
Applications
| DC-DC Converter Output Rectification | AC-DC Adapter Secondary Side |
|---|---|
Use Scenario: High-current 12V→3.3V/5V buck converter in telecom server PSU. IC Role / Device Role / Timing Role: Synchronous rectifier replacement; conducts during low-side MOSFET off-time. Use Value: 0.50V VF reduces conduction loss by 0.75W per leg vs. Si diode, improving full-load efficiency by 1.2%. | Use Scenario: 19V/3.0A laptop adapter with universal AC input. IC Role / Device Role / Timing Role: Secondary-side output rectifier in flyback topology. Use Value: Soft switching eliminates 20–30MHz EMI peaks, easing CISPR-32 Class B compliance without added filtering. |
| Automotive Body Control Module | Industrial Motor Drive Freewheeling |
Use Scenario: 12V power distribution unit supplying infotainment and lighting loads. IC Role / Device Role / Timing Role: Reverse polarity protection and load dump clamping diode. Use Value: –55°C to +150°C rating ensures reliable operation in engine bay; 250A IFSM withstands ISO 7637-2 pulse 5a. | Use Scenario: 24V BLDC motor controller with regenerative braking. IC Role / Device Role / Timing Role: Freewheel path for inductive back-EMF during PWM off-time. Use Value: 1°C/W RθJC allows direct heatsink mounting to sustain 30A continuous freewheel current without thermal shutdown. |
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-30CPH045 | Same 45V VRRM, 30A total, but TO247 package; VF = 0.52V @ 15A/25°C; RθJC = 0.8°C/W | Better thermal performance but larger footprint; requires different PCB cutout and mounting hardware | Select when junction temperature must stay <125°C at >25A continuous with limited heatsink area |
| ON Semiconductor MBR3045CT | 45V/30A, TO220AB, but planar Schottky; VF = 0.62V @ 15A/25°C; IR = 1.0mA @ 45V/25°C | Higher conduction loss and leakage; not AEC-Q101 qualified | Select only for cost-sensitive non-automotive industrial use where 0.12V higher VF is acceptable |
Compared with VS-30CPH045 and MBR3045CT, SDT3045VCT delivers superior thermal efficiency in TO220AB form factor and automotive-grade reliability, making it optimal for space-constrained, high-reliability 12–48V power conversion where leakage and VF stability at temperature are critical.
Availability
SDT3045VCT is available at Aetrix Electronics and suitable for DC-DC converters, AC-DC adapters, automotive body control modules, and industrial motor drive freewheeling requiring stable component supply and long-term production continuity.
Supply support for SDT3045VCT 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 North America.
The SDT3045VCT belongs to Diodes' Trench Schottky Rectifier product line, engineered specifically for high-efficiency, high-temperature power conversion in automotive and industrial applications where low VF drift and leakage stability are essential.
FAQ
Is SDT3045VCT pin-compatible with standard TO220AB dual-diode rectifiers?
Yes - SDT3045VCT uses the industry-standard TO220AB outline with Anode1–Cathode–Anode2 pin configuration (pin 1 = A1, pin 2 = K, pin 3 = A2). The cathode is internally tied to the metal tab, matching mechanical and electrical footprints of MBR30xxCT, SB30xxCT, and similar dual-anode Schottky devices.
Does SDT3045VCT require a heatsink for 30A operation?
Yes - although RθJC is 1°C/W, junction temperature rises ~30°C above case temperature at 30A due to VF × IO power dissipation (~15W). A heatsink maintaining case temperature ≤100°C is required to keep TJ ≤130°C under continuous load, per Figure 3 derating curve.
What is the maximum operating frequency for SDT3045VCT in switching applications?
SDT3045VCT has no reverse recovery time (Qrr ≈ 0), enabling reliable operation up to 500kHz in hard-switched topologies. Junction capacitance of ~1000pF at 4V (Figure 4) limits practical use above 1MHz only in resonant or zero-voltage-switching circuits.
Is SDT3045VCT compliant with automotive qualification standards?
SDT3045VCT is manufactured in IATF 16949-certified facilities and supports PPAP documentation. While not pre-certified to AEC-Q101 in this specific revision, Diodes states it meets change-control requirements for automotive use - qualification testing can be performed per customer request with full report delivery.
SDT3045VCT 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):
- 45 V
- Current - Average Rectified (Io) (per Diode):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SDT3045VCT FAQ
1.How can I place an order for SDT3045VCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SDT3045VCT 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 SDT3045VCT reliable?
The price and inventory of SDT3045VCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SDT3045VCT is usually 5 days.
3.What payment methods are accepted for SDT3045VCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SDT3045VCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SDT3045VCT?
SDT3045VCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SDT3045VCT 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 SDT3045VCT?
For technical support, including SDT3045VCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SDT3045VCT requirements.
6.How does Aetrix verify that SDT3045VCT is sourced from the original manufacturer or authorized distributors?
All SDT3045VCT 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 SDT3045VCT meets industry standards.
7.What is the process for return or replacement of SDT3045VCT?
All SDT3045VCT units undergo pre-shipment inspection (PSI). If there is an issue with SDT3045VCT, 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 SDT3045VCT part is unused and in its original packaging.
Return procedure for SDT3045VCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SDT3045VCT Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
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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
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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