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Diodes Incorporated SBR20M45D1-13
- Part No.:
- SBR20M45D1-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
SBR20M45D1-13.pdf
- Description:
- DIODE SBR 45V 20A TO252-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,432
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Product details
Overview
SBR20M45D1-13 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 switching power supplies. It delivers 0.61 V max forward voltage at 20 A and 25°C, 0.1 mA max reverse leakage at 45 V/25°C, and supports operation up to +175°C junction temperature.
For engineers reviewing the SBR20M45D1-13 datasheet, SBR20M45D1-13 pinout, SBR20M45D1-13 application, or SBR20M45D1-13 equivalent, key selection criteria include forward voltage drop at high current, thermal resistance (RθJC = 2.5°C/W), AEC-Q101 qualification status, and TO252 thermal pad layout compatibility.
Technical Context
This super barrier rectifier uses patented Schottky-barrier-enhanced structure to achieve lower VF than standard Schottky diodes while maintaining superior high-temperature stability and soft reverse recovery. Its 0.61 V max VF at 20 A/25°C enables reduced conduction loss in high-current 12 V–48 V output rails.
Rated for 140 A non-repetitive surge current (8.3 ms half-sine), it sustains transient overloads in automotive and industrial SMPS freewheeling paths. The 2.5°C/W junction-to-case thermal resistance supports direct heatsink mounting via the exposed drain tab in TO252 package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 36 V nominal bus applications. |
| IO | 20 A - Average rectified output current at TA = 25°C with adequate heatsinking; derates to ~12 A at TC = 100°C per Figure 4. |
| VF Max | 0.61 V - Measured at IF = 20 A, TJ = 25°C; enables <12.2 W conduction loss per device in continuous 20 A path. |
| IR Max | 0.1 mA - Reverse leakage at VR = 45 V, TJ = 25°C; ensures low standby power loss in high-impedance hold-up circuits. |
| RθJC | 2.5 °C/W - Junction-to-case thermal resistance; allows direct thermal interface to heatsink for high-power density layouts. |
| TJ Range | −55°C to +175°C - Extended junction temperature rating supports under-hood automotive and industrial ambient conditions. |
| IFSM | 140 A - Non-repetitive peak forward surge current (8.3 ms); withstands inrush and fault currents without bond-wire failure. |
Pinout & Package
Package: TO252 (DPAK), surface-mount, with exposed drain tab (Pin 2) for thermal and electrical connection. Molded green compound, UL 94V-0 rated, lead-free and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Anode terminal | Connects to input/high-side node in freewheeling or output rectification configuration. |
| Pin 2 (Cathode / Drain Tab) | Cathode and thermal pad | Electrically and thermally connects to PCB copper pour or heatsink; must be soldered for RθJC performance. |
| Pin 3 (Cathode) | Cathode terminal | Secondary cathode connection; paralleled with Pin 2 for low-inductance, high-current return path. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF | 0.61 V max at 20 A/25°C - reduces conduction loss by ≥15% vs. comparable Schottky diodes in 12–48 V DC-DC stages. |
| Soft switching | No hard reverse recovery snap-off - minimizes EMI generation during turn-off in high-frequency (>300 kHz) converters. |
| AEC-Q101 qualified | Qualified for automotive-grade reliability - meets stress test requirements for temperature cycling, HTRB, and HTGB. |
| Green construction | Halogen- and antimony-free (<900 ppm Br/Cl, <1000 ppm Sb); RoHS 2 compliant with full traceability. |
| TO252 thermal design | Exposed cathode tab with RθJC = 2.5°C/W - enables >15 W continuous dissipation with 25°C/W heatsink. |
Applications
| Server PSU Output Rectification | Automotive DC-DC Converter |
|---|---|
Use Scenario: 12 V → 3.3 V/5 V point-of-load conversion in 1U rack servers with >95% efficiency target. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement; operates as uncontrolled freewheeling diode in CCM flyback or forward topology. Use Value: 0.61 V VF cuts conduction loss by 1.2 W vs. legacy 0.75 V Schottky at 20 A, improving thermal margin and enabling smaller heatsinks. |
Use Scenario: 48 V → 12 V bidirectional DC-DC in 48 V mild-hybrid vehicles with under-hood ambient up to 125°C. IC Role / Device Role / Timing Role: High-current freewheeling diode in interleaved buck converter; handles 20 A average load with 140 A surge capability. Use Value: −55°C to +175°C TJ rating and AEC-Q101 qualification ensure reliability across cold-cranking and hot-soak conditions. |
| Industrial Motor Drive Power Supply | Telecom Rectifier Module |
Use Scenario: Auxiliary 24 V supply for gate drivers and control logic in 3-phase IGBT inverters with 100 ms overload tolerance. IC Role / Device Role / Timing Role: Output rectifier in 300 kHz resonant LLC secondary stage; leverages soft switching to reduce EMI filter size. Use Value: Soft reverse recovery eliminates snubber components, reducing BOM count and board area in space-constrained drive enclosures. |
Use Scenario: 54 V input rectification in -48 V telecom rectifier modules requiring >10-year field life and zero field failures. IC Role / Device Role / Timing Role: Primary output rectifier in dual-phase synchronous buck; used in parallel with second device for 40 A total output. Use Value: 0.1 mA IR max at 45 V/25°C ensures <5 mW standby loss per device, critical for energy-efficient base station operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay V20100C-E3/45 | 45 V, 20 A, VF = 0.65 V max @ 20 A/25°C; RθJC = 3.0°C/W; no AEC-Q101 qualification. | Higher VF increases conduction loss by ~0.8 W at 20 A; lacks automotive qualification and soft-switching characterization. | Select when cost sensitivity outweighs thermal or automotive compliance requirements. |
| ON Semiconductor MUR2040CT | 40 V, 20 A, fast recovery (trr ≈ 35 ns), VF = 0.92 V max @ 20 A/25°C; TO220 package. | Higher VF and slower recovery increase switching loss and EMI; TO220 requires through-hole assembly and larger footprint. | Select only if legacy TO220 footprint reuse is mandatory and efficiency targets are relaxed. |
Compared with V20100C-E3/45 and MUR2040CT, the SBR20M45D1-13 delivers the lowest VF among TO252-packaged 45 V rectifiers with verified soft switching and AEC-Q101 compliance-making it optimal for high-density, high-reliability 20 A DC-DC outputs.
Availability
SBR20M45D1-13 is available at Aetrix Electronics and suitable for server power supplies, automotive DC-DC converters, and industrial motor drive auxiliary supplies requiring stable component supply, AEC-Q101 compliance, and high-temperature operation.
Supply support for SBR20M45D1-13 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, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The SBR (Super Barrier Rectifier) product line was developed to replace conventional Schottky and fast recovery diodes in high-current, high-efficiency power conversion where low VF and soft recovery are critical-targeting datacenter, automotive, and industrial SMPS designs.
FAQ
What is the maximum continuous current rating for SBR20M45D1-13 at 100°C case temperature?
Per Figure 4 in the datasheet, the average rectified output current derates linearly from 20 A at TC = 25°C to approximately 12 A at TC = 100°C. This reflects thermal limitation due to RθJC = 2.5°C/W and maximum TJ = +175°C. Operation above this requires active cooling or reduced ambient.
Is SBR20M45D1-13 pin-compatible with standard TO252 Schottky diodes?
Yes-SBR20M45D1-13 uses standard TO252 (DPAK) footprint with identical pin 1 (anode), pin 2 (cathode/tab), and pin 3 (cathode) arrangement. Pad layout matches JEDEC MO-263, and thermal pad dimensions align with Diodes Inc.'s recommended 5.3 mm × 6.1 mm copper area.
Does SBR20M45D1-13 require a heatsink for 20 A continuous operation?
Yes-20 A continuous operation requires heatsinking. With RθJC = 2.5°C/W and PD ≈ 12.2 W (at VF = 0.61 V), even a modest 25°C/W heatsink raises TJ to ~135°C. For full 20 A at TA = 70°C, a forced-air or bonded heatsink with ≤10°C/W thermal resistance is recommended.
How does the soft switching behavior impact EMI in high-frequency converters?
Soft switching eliminates reverse recovery current spikes and associated dI/dt-induced ringing. In 500 kHz buck converters, this reduces peak-to-peak noise on the output rail by 8–12 dB compared to fast recovery diodes-lowering filter capacitor count and simplifying EMC compliance testing.
SBR20M45D1-13 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
SBR20M45D1-13 FAQ
1.How can I place an order for SBR20M45D1-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR20M45D1-13 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 SBR20M45D1-13 reliable?
The price and inventory of SBR20M45D1-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR20M45D1-13 is usually 5 days.
3.What payment methods are accepted for SBR20M45D1-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR20M45D1-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR20M45D1-13?
SBR20M45D1-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR20M45D1-13 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 SBR20M45D1-13?
For technical support, including SBR20M45D1-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR20M45D1-13 requirements.
6.How does Aetrix verify that SBR20M45D1-13 is sourced from the original manufacturer or authorized distributors?
All SBR20M45D1-13 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 SBR20M45D1-13 meets industry standards.
7.What is the process for return or replacement of SBR20M45D1-13?
All SBR20M45D1-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR20M45D1-13, 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 SBR20M45D1-13 part is unused and in its original packaging.
Return procedure for SBR20M45D1-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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