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Diodes Incorporated SBR8E20P5-7
- Part No.:
- SBR8E20P5-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- PowerDI™ 5
- Datasheet:
-
SBR8E20P5-7.pdf
- Description:
- DIODE SBR 20V 8A POWERDI5
- Quantity:
- Payment:
- Shipping:
Inventory:5,175
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Product details
Overview
SBR8E20P5 from Diodes Incorporated is an 8A, 20V Super Barrier Rectifier (SBR®) in PowerDI5 package, featuring ultra-low 0.45V max forward voltage at 8A/25°C and only 0.5mA max reverse leakage at 20V/25°C. It serves as a high-efficiency rectifier, freewheeling diode, or polarity protection device in compact AC-DC adapters and DC-DC converters.
For engineers reviewing the SBR8E20P5 datasheet, SBR8E20P5 pinout, SBR8E20P5 application, or SBR8E20P5 equivalent, key selection criteria include thermal resistance (RθJA = 20°C/W), low-profile 1.1mm height, RoHS-compliant lead-free finish, and stable IR performance up to +125°C - critical for space-constrained, thermally demanding power stages.
Technical Context
This SBR uses patented Super Barrier Rectifier technology to achieve Schottky-like VF without excessive IR drift. Its junction-to-case thermal resistance is just 3°C/W, enabling high-current operation with minimal temperature rise when mounted on a 2"×2" aluminum board.
The device operates across -55°C to +150°C and maintains ≤75mA IR at 20V and +125°C - significantly tighter than standard Schottky diodes. Its total capacitance is 10,000pF at 0V reverse bias (f = 1MHz), supporting moderate-speed switching in secondary-side rectification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - Maximum blocking voltage before breakdown; suitable for 5–12V output rails with margin. |
| IO (AV) | 8 A - Continuous average forward current at TA = +25°C; derates to ~4.5A at +100°C per Figure 4. |
| VF (max) | 0.45 V @ 8A, +25°C - Enables <3.6W conduction loss at full load; reduces heatsink requirements. |
| IR (max) | 0.5 mA @ 20V, +25°C - Low leakage preserves efficiency in standby; rises to 75mA at +125°C. |
| RθJA | 20 °C/W - Measured on 2"×2" Al board; enables ~3.5W dissipation before reaching 150°C junction limit. |
| Package | PowerDI5 - Surface-mount, thermally enhanced plastic package with 1.1mm profile and UL 94V-0 rating. |
Pinout & Package
PowerDI5 is a 3-terminal surface-mount package with exposed cathode pad for thermal and electrical performance. Cathode is connected to the large bottom metal slug; anode and cathode terminals are accessible on opposite sides of the molded body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to input/source side; accepts up to 8A continuous; requires adequate copper pour for thermal relief. |
| Cathode | Output terminal for forward conduction | Internally bonded to exposed metal pad; primary thermal path to PCB; must be soldered to ≥100 mm² copper area. |
| Case (Exposed Pad) | Thermal & electrical cathode extension | Electrically tied to cathode; provides dominant heat transfer path; not isolated - must be routed accordingly. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF | 0.45V max @ 8A/25°C - cuts conduction loss by ~30% vs. standard Schottky diodes rated at 0.65V. |
| High-temp IR stability | 75mA @ 20V/+125°C - avoids thermal runaway in enclosed, high-ambient environments like USB-PD chargers. |
| Thermally efficient package | RθJC = 3°C/W - enables direct heat transfer from junction to PCB, reducing reliance on external heatsinks. |
| Low-profile construction | 1.1mm max height - fits into slim AC-DC adapters (<12mm total thickness) and portable DC-DC modules. |
| Green compliance | Halogen- and antimony-free, RoHS-compliant - meets IEC 61249-2-21 and JEDEC J-STD-020 MSL Level 1. |
Applications
| AC-DC Adapters (>10W) | DC-DC Converters |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 12V/2A wall adapters with tight thermal envelopes. IC Role / Device Role / Timing Role: Freewheeling rectifier replacing MOSFETs in quasi-resonant flyback designs. Use Value: Eliminates gate-drive complexity while maintaining <92% efficiency at full load due to 0.45V VF. |
Use Scenario: Output rectification in 5V/4A buck converter powering FPGA I/O banks. IC Role / Device Role / Timing Role: Polarity protection and reverse-current blocking during hot-swap events. Use Value: Prevents backfeed with only 0.5mA leakage at room temp, avoiding rail collapse during standby. |
| USB-C Power Delivery | Industrial 24V Power Supplies |
Use Scenario: Input polarity protection for 20V/3A USB-C PD sink circuits in portable monitors. IC Role / Device Role / Timing Role: Unidirectional current path ensuring safe connection regardless of plug orientation. Use Value: Withstands 180A surge (8.3ms) and maintains <0.5mA leakage - prevents false shutdown during transient overvoltage. |
Use Scenario: Freewheeling diode in 24V/3A isolated forward converter for PLC I/O modules. IC Role / Device Role / Timing Role: Energy recirculation path during MOSFET off-time in high-reliability industrial SMPS. Use Value: Stable IR up to +125°C ensures no thermal runaway in sealed enclosures with limited airflow. |
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 VS-8EWH02-M3 | 20V/8A, VF = 0.47V max @ 8A/25°C; RθJA = 25°C/W; TO-277 package (2.3mm height). | Larger footprint and taller profile limits use in ultra-thin adapters. | Prefer when higher surge rating (200A IFSM) is required and board height >2.0mm is acceptable. |
| ON Semiconductor SBRA820 | 20V/8A, VF = 0.44V typ @ 8A/25°C; IR = 0.4mA max @ 20V/25°C; same PowerDI5 footprint. | Nearly identical thermal and electrical specs; minor IR improvement but no data on +125°C IR. | Drop-in replacement if +125°C IR validation is not required; verify date-code availability for long-term BOM planning. |
Compared with VS-8EWH02-M3 and SBRA820, the SBR8E20P5 offers the lowest profile (1.1mm), best documented high-temp IR stability (75mA @ +125°C), and industry-leading RθJA (20°C/W), making it optimal for thermally dense, space-constrained power supplies.
Availability
SBR8E20P5 is available at Aetrix Electronics and suitable for AC-DC adapters, DC-DC converters, and USB-C power delivery systems requiring stable component supply, consistent thermal performance, and RoHS/Green compliance.
Supply support for SBR8E20P5 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® product line delivers high-efficiency, temperature-stable rectifiers for power conversion in consumer, computing, and industrial applications - engineered specifically to replace Schottky diodes where low VF and controlled IR are jointly critical.
FAQ
What is the maximum junction temperature and how is it calculated?
The SBR8E20P5 has a rated TJ range of -55°C to +150°C. Junction temperature is calculated as TJ = TA + (PD × RθJA), where PD = VF × IF. At 8A and 0.45V, PD = 3.6W; with RθJA = 20°C/W, TJ rises 72°C above ambient - so at TA = +80°C, TJ reaches 152°C, exceeding rating. Derating is required above +75°C ambient.
Is the PowerDI5 package electrically isolated?
No. The exposed metal pad on the PowerDI5 package is electrically connected to the cathode terminal. It must be routed to the cathode net on the PCB and cannot serve as a floating thermal pad. Isolation requires external insulation or alternative packaging such as SMA or SMB.
How does SBR8E20P5 compare to standard Schottky diodes in high-temperature operation?
At +125°C and 20V reverse bias, SBR8E20P5 exhibits 75mA IR - typically 3–5× lower than comparable 20V Schottky diodes (e.g., 1N5822: ~350mA). This reduced leakage prevents thermal runaway and improves system reliability in sealed, high-ambient environments.
Can SBR8E20P5 be used in synchronous rectification topologies?
No - it is a passive unidirectional rectifier, not a controllable switch. It replaces MOSFETs only in non-synchronous (diode-rectified) topologies like flyback or forward converters. For synchronous rectification, a gate-driven MOSFET with matching voltage/current ratings is required.
SBR8E20P5-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- PowerDI™ 5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io):
- 8A
- Voltage - Forward (Vf) (Max) @ If:
- 450 mV @ 8 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 20 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 5
- Operating Temperature - Junction:
- -55°C ~ 150°C
SBR8E20P5-7 FAQ
1.How can I place an order for SBR8E20P5-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR8E20P5-7 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 SBR8E20P5-7 reliable?
The price and inventory of SBR8E20P5-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR8E20P5-7 is usually 5 days.
3.What payment methods are accepted for SBR8E20P5-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR8E20P5-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR8E20P5-7?
SBR8E20P5-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR8E20P5-7 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 SBR8E20P5-7?
For technical support, including SBR8E20P5-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR8E20P5-7 requirements.
6.How does Aetrix verify that SBR8E20P5-7 is sourced from the original manufacturer or authorized distributors?
All SBR8E20P5-7 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 SBR8E20P5-7 meets industry standards.
7.What is the process for return or replacement of SBR8E20P5-7?
All SBR8E20P5-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBR8E20P5-7, 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 SBR8E20P5-7 part is unused and in its original packaging.
Return procedure for SBR8E20P5-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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