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Diodes Incorporated SBR20M45D1Q-13
- Part No.:
- SBR20M45D1Q-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
SBR20M45D1Q-13.pdf
- Description:
- DIODE SBR 45V 20A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
SBR20M45D1Q-13 from Diodes Incorporated is a 20A, 45V ultra-low VF super barrier rectifier in TO252 (DPAK) package, optimized for high-efficiency DC-DC converters and automotive-grade freewheeling applications. It delivers 0.61V max forward voltage at 20A/25°C, 0.1mA max reverse leakage at 45V/25°C, and operates from –55°C to +175°C with AEC-Q101 qualification.
For engineers reviewing the SBR20M45D1Q-13 datasheet, SBR20M45D1Q-13 pinout, SBR20M45D1Q-13 application, or SBR20M45D1Q-13 equivalent, key selection criteria include forward voltage stability across temperature, surge current capability (140A IFSM), junction-to-case thermal resistance (2.5°C/W), and RoHS/Green compliance for automotive power systems.
Technical Context
This super barrier rectifier employs patented Schottky-like low-VF architecture with enhanced high-temperature stability versus conventional Schottkys. Its soft, fast switching minimizes EMI in high-frequency SMPS topologies while maintaining low conduction loss.
The device is rated for 45V repetitive reverse voltage and supports 20A average output current with derating above +25°C ambient. Thermal design leverages its 2.5°C/W RθJC for direct heatsink mounting via the exposed drain pad in TO252 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum blocking voltage before breakdown; sets usable input range in 12V–36V automotive DC-DC stages. |
| IO (AV) | 20 A - Continuous forward current rating at TA = +25°C; requires thermal management above ambient. |
| VF Max | 0.61 V @ 20A, 25°C - Enables >95% efficiency in 5V/12V buck converters at full load. |
| IR Max | 0.1 mA @ 45V, 25°C - Low leakage preserves standby power in always-on vehicle modules. |
| IFSM | 140 A @ 8.3ms - Withstands inrush and transient surges in motor drive freewheel paths. |
| RθJC | 2.5 °C/W - Allows direct thermal coupling to PCB copper or external heatsink for high-power density layouts. |
| TJ Range | –55°C to +175°C - Validated for under-hood automotive environments per AEC-Q101 stress testing. |
Pinout & Package
Package: TO252 (DPAK), surface-mount, with exposed drain pad (Pin 2) for thermal and electrical connection. Molded green compound, UL 94V-0 rated, matte tin terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Input current entry point | Connected to switching node or inductive source; carries full load current during conduction. |
| Pin 2 (Cathode / Drain Pad) | Output return path & thermal interface | Electrically tied to cathode; soldered to large copper pour or heatsink for thermal dissipation and low-inductance return. |
| Pin 3 (Cathode) | Secondary cathode connection | Provides redundant cathode routing; used with Pin 2 for parallel trace layout or current sharing in high-current PCBs. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF | 0.61V max at 20A/25°C - Reduces conduction loss by ~30% vs. standard FRDs in 12V output rails. |
| Soft switching | Controlled reverse recovery with minimal voltage overshoot - lowers EMI filter component count in CISPR-25-compliant designs. |
| AEC-Q101 qualified | Validated for automotive reliability including HTOL, TC, UHAST - enables use in ADAS power supplies without additional qualification. |
| Green & RoHS compliant | Halogen-free (<900ppm Br/Cl), antimony-free, lead-free - meets global automotive material declarations (IMDS, ELV). |
| TO252 thermal performance | RθJC = 2.5°C/W - Supports 15W+ continuous dissipation with minimal heatsink area in space-constrained ECUs. |
Applications
| Automotive DC-DC Converters | Server VRMs |
|---|---|
Use Scenario: 12V-to-5V/3.3V conversion in body control modules with tight thermal envelopes. IC Role / Device Role / Timing Role: Freewheeling diode in synchronous buck converter secondary side. Use Value: 0.61V VF reduces power loss by 1.2W vs. standard FRD at 20A, lowering junction temperature rise by ~30°C. | Use Scenario: High-current point-of-load regulation for CPU/GPU VRMs in data center servers. IC Role / Device Role / Timing Role: Asynchronous rectifier in multiphase buck stages where gate drive complexity must be minimized. Use Value: Soft recovery limits dV/dt-induced shoot-through risk during phase interleaving, improving system reliability. |
| Industrial Motor Drives | Telecom Power Supplies |
Use Scenario: Flyback diode across brushed DC motor coils in factory automation actuators. IC Role / Device Role / Timing Role: Inductive energy recirculation path during PWM turn-off. Use Value: 140A IFSM withstands repeated stall-current transients; –55°C to +175°C rating ensures operation in uncooled enclosures. | Use Scenario: Output rectification in 48V-input telecom rectifiers delivering 12V/24V outputs. IC Role / Device Role / Timing Role: Main output diode in forward or flyback topology with high ambient temperature requirements. Use Value: 0.1mA IR at 45V/25°C maintains <10mW standby loss, supporting Energy Star Level VI compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT20U45D1Q-13 | Same die, enhanced surge rating (160A IFSM), identical VF/IR specs | Better suited for motor start-up surges and repetitive overloads | Select when IFSM margin >140A is required without changing layout or thermal design. |
| VB2045C-E3/45 | Higher VF (0.72V max @20A), lower IR (0.05mA), same VRRM/IO | Lower leakage benefits ultra-low-power standby; higher VF increases conduction loss | Prefer for battery-backed systems where leakage dominates loss budget, not peak efficiency. |
Compared with SBRT20U45D1Q-13 and VB2045C-E3/45, SBR20M45D1Q-13 offers optimal balance of low VF, robust surge capability, and AEC-Q101 qualification-making it the default choice for cost-sensitive, thermally constrained automotive DC-DC designs.
Availability
SBR20M45D1Q-13 is available at Aetrix Electronics and suitable for automotive power conversion, industrial motor control, and telecom rectification requiring stable component supply, long-term lifecycle support, and AEC-Q101-compliant sourcing.
Supply support for SBR20M45D1Q-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-reliability power management, signal integrity, and protection solutions for automotive, industrial, and computing markets.
The SBR (Super Barrier Rectifier) product line targets high-efficiency, high-temperature power conversion where Schottky limitations (leakage, temperature drift) and FRD losses are unacceptable-delivering Schottky-like VF with silicon-diode ruggedness.
FAQ
What is the maximum junction temperature for continuous operation?
The SBR20M45D1Q-13 is rated for continuous operation up to +175°C junction temperature, validated per AEC-Q101 thermal cycling and high-temperature operating life tests. Derating curves in Figure 4 confirm usable current down to +125°C ambient with appropriate PCB copper area.
Is the TO252 package lead-free and RoHS compliant?
Yes. The SBR20M45D1Q-13 uses matte tin finish on copper leadframe and halogen/antimony-free molding compound, meeting EU RoHS Directive 2011/65/EU and Diodes Incorporated's "Green" definition (<900ppm Br+Cl, <1000ppm Sb). Full compliance documentation is available on their quality portal.
How does the soft switching behavior reduce EMI in SMPS designs?
Its controlled reverse recovery minimizes voltage ringing and dV/dt spikes during turn-off, directly reducing broadband EMI generation. This allows smaller input filters and fewer ferrite beads in CISPR-25 Class 5 automotive power supplies, simplifying layout and certification.
Can this diode replace a standard Schottky rectifier in existing designs?
Yes, with caveats: it matches Schottky VF but offers superior high-temperature stability and lower leakage at elevated temperatures. Layout remains identical (TO252 footprint), but verify thermal relief on the cathode pad and ensure no voltage overshoot exceeds 45V in the target circuit due to different recovery characteristics.
SBR20M45D1Q-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:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 610 mV @ 20 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 100 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252-3
- Operating Temperature - Junction:
- -55°C ~ 175°C
SBR20M45D1Q-13 FAQ
1.How can I place an order for SBR20M45D1Q-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR20M45D1Q-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 SBR20M45D1Q-13 reliable?
The price and inventory of SBR20M45D1Q-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR20M45D1Q-13 is usually 5 days.
3.What payment methods are accepted for SBR20M45D1Q-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR20M45D1Q-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR20M45D1Q-13?
SBR20M45D1Q-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR20M45D1Q-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 SBR20M45D1Q-13?
For technical support, including SBR20M45D1Q-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR20M45D1Q-13 requirements.
6.How does Aetrix verify that SBR20M45D1Q-13 is sourced from the original manufacturer or authorized distributors?
All SBR20M45D1Q-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 SBR20M45D1Q-13 meets industry standards.
7.What is the process for return or replacement of SBR20M45D1Q-13?
All SBR20M45D1Q-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR20M45D1Q-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 SBR20M45D1Q-13 part is unused and in its original packaging.
Return procedure for SBR20M45D1Q-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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