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Diodes Incorporated SBR1A400P1-7
- Part No.:
- SBR1A400P1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
SBR1A400P1-7.pdf
- Description:
- DIODE SBR 400V 1A POWERDI123
- Quantity:
- Payment:
- Shipping:
Inventory:8,152
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Product details
Overview
SBR1A400P1-7 from Diodes Incorporated is a 1.0A, 400V surface-mount Super Barrier Rectifier (SBR®) in PowerDI123 package, featuring ultra-low forward voltage (VF = 1.0 V @ IF = 1.0A, TJ = +125°C), soft fast switching (tRR = 85 ns), and +150°C junction operation - deployed in DC/DC converter output stages and high-efficiency AC-DC secondary-side rectification.
For engineers reviewing the SBR1A400P1-7 datasheet, SBR1A400P1-7 pinout, SBR1A400P1-7 application, or SBR1A400P1-7 equivalent, key selection criteria include forward voltage at elevated temperature, surge current rating (IFSM = 40 A), reverse leakage at 125°C (IR = 0.36 mA), thermal resistance (RθJA = 138 °C/W), and RoHS-compliant green packaging.
Technical Context
This SBR device replaces conventional Schottky and fast recovery diodes in medium-voltage, high-current rectification where low conduction loss and controlled reverse recovery are critical. Its patented interlocking clip design enables 40 A non-repetitive surge capability while maintaining low VF and soft recovery behavior.
The SBR1A400P1-7 operates up to +150°C junction temperature with IR ≤ 0.36 mA at VR = 400 V and TJ = +125°C, and exhibits stable capacitance (CT ≈ 100 pF @ VR = 4 V, f = 1 MHz) - enabling predictable EMI performance in high-frequency SMPS designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - Maximum repetitive reverse blocking voltage; supports 280 VAC input-derived DC bus applications with safety margin. |
| IO | 1.0 A - Average rectified output current; rated for continuous conduction mode operation on FR-4 PCB with recommended pad layout. |
| VF @ 1.0A / 125°C | 1.0 V - Low conduction loss at elevated temperature; reduces power dissipation by ~25% vs. standard Schottky diodes in same package. |
| tRR | 85 ns - Soft, fast reverse recovery; minimizes switching noise and EMI in high-frequency converters (>100 kHz). |
| IFSM | 40 A - Peak surge current handling; withstands inrush and transient overloads without degradation. |
| RθJA | 138 °C/W - Thermal resistance junction-to-ambient; defines minimum copper area required for thermal management on standard PCB. |
| IR @ 400V / 125°C | 0.36 mA - Reverse leakage at max operating temperature; ensures stable blocking under hot, high-voltage bias conditions. |
Pinout & Package
Package: PowerDI123 - surface-mount plastic package with matte tin-annealed copper leadframe, UL 94V-0 molding compound, cathode band polarity indicator, and moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Current entry terminal during forward conduction | Connected to transformer secondary or switch node; requires low-inductance routing to minimize ringing. |
| Cathode | Current exit terminal during forward conduction | Connected to output capacitor and load; marked with visible cathode band on top surface. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF at high temperature | 1.0 V @ IF = 1.0A, TJ = +125°C - directly lowers conduction loss and improves efficiency in thermally constrained layouts. |
| Soft fast switching | tRR = 85 ns with low IRR tail - suppresses voltage overshoot and reduces snubber losses in synchronous rectifier replacement designs. |
| +150°C operating junction | Rated for full current delivery up to TJ = +150°C - enables compact heatsinking and higher power density in sealed enclosures. |
| Patented interlocking clip | Enables 40 A IFSM without bond wire failure - supports robust operation during cold-start and line-dip recovery events. |
| Halogen & antimony free | Meets "Green" definition (<900 ppm Br/Cl, <1000 ppm Sb); complies with JEDEC J-STD-020 Level 1 MSL. |
Applications
| Server PSU Secondary Rectification | Laptop Adapter Output Stage |
|---|---|
Use Scenario: High-efficiency 12 V/19 V output rectification in multi-phase LLC resonant converters. IC Role / Device Role / Timing Role: Primary unidirectional power switch replacing Schottky diodes in OR-ing and freewheeling paths. Use Value: 1.0 V VF at 125°C reduces conduction loss by 0.25 W per diode vs. legacy 45 V Schottky, improving full-load efficiency by 0.4%. | Use Scenario: Compact 65 W adapter with >90% efficiency at 230 VAC input and 20 V/3.25 A output. IC Role / Device Role / Timing Role: Secondary-side rectifier in quasi-resonant flyback topology. Use Value: 85 ns tRR enables clean turn-off with minimal voltage spike, eliminating need for RC snubber and saving board space. |
| Industrial DC Power Module | USB-C PD Fast Charger |
Use Scenario: 24 V/5 A isolated DC-DC module operating continuously at 60°C ambient. IC Role / Device Role / Timing Role: Output rectifier sustaining full load under high ambient and case temperature. Use Value: 0.36 mA IR at 400 V/125°C prevents thermal runaway in enclosed chassis; RθJA = 138 °C/W validated on 100 mm² copper pour. | Use Scenario: Dual-port 100 W USB-C PD charger with dual-output synchronous rectification. IC Role / Device Role / Timing Role: Standby-mode rectifier in auxiliary winding supply path. Use Value: 0.013 mA IR at 25°C ensures <10 µW standby loss; green halogen-free construction meets IEC 62368-1 end-product requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT1A400P1-7 | Same die, enhanced surge rating (IFSM = 50 A), identical VF and IR specs. | Preferred for industrial motor drives with frequent line transients. | Select when IFSM margin >40 A is required without changing layout or thermal design. |
| SDT1A400P1-7 | Standard Schottky (not SBR); VF = 0.72 V @ 25°C but degrades to 0.95 V @ 125°C; tRR not specified. | Lower-cost option where thermal derating is acceptable and EMI filtering is already implemented. | Choose only if peak efficiency at high temperature is not critical and layout allows larger heatsink. |
Compared with SBRT1A400P1-7, the SBR1A400P1-7 trades 10 A surge headroom for cost-sensitive volume production; versus SDT1A400P1-7, it delivers superior high-temperature stability and defined soft recovery - essential for EMI-constrained USB-C and server applications.
Availability
SBR1A400P1-7 is available at Aetrix Electronics and suitable for server power supplies, laptop adapters, industrial DC modules, and USB-C PD fast chargers requiring stable component supply across multi-year production cycles.
Supply support for SBR1A400P1-7 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 targets high-efficiency power conversion applications demanding low VF, soft switching, and high-temperature reliability - specifically engineered for next-generation AC-DC and DC-DC converters in computing, consumer, and industrial markets.
FAQ
What is the maximum allowable PCB pad size for thermal performance?
The datasheet specifies a minimum recommended pad layout per Diodes' PowerDI123 outline drawing. For optimal RθJA = 138 °C/W, the cathode pad must be ≥ 40 mm² copper area with 2–4 thermal vias (0.3 mm diameter, 0.8 mm pitch) to inner ground plane. Larger pads improve thermal performance but require verification against solder paste volume control.
Does SBR1A400P1-7 support automated optical inspection (AOI)?
Yes - the PowerDI123 package features a flat, coplanar leadframe with matte tin finish and clearly visible cathode band marking, enabling reliable AOI detection of polarity and solder joint integrity. The 1.05 mm X-dimension and 1.50 mm Y-dimension provide sufficient contrast for standard AOI camera resolution (≥5 µm/pixel).
Can this diode replace a 1N5819 in an existing design?
No - the 1N5819 is rated for 40 V VRRM and 1 A IO, while SBR1A400P1-7 is rated for 400 V VRRM. Direct substitution would violate voltage safety margins. For 40 V applications, consider Diodes' SBR1A40P1-7 (40 V version) which shares identical PowerDI123 footprint and thermal characteristics.
Is the SBR1A400P1-7 qualified for automotive AEC-Q101?
No - the SBR1A400P1-7 is not AEC-Q101 qualified. It is rated for industrial temperature range (−65°C to +150°C) and RoHS-compliant green construction, but lacks the stress testing, lot traceability, and failure analysis reporting required for automotive qualification. For AEC-Q101 applications, consider Diodes' APx series SBRs.
SBR1A400P1-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 400 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 85 ns
- Current - Reverse Leakage @ Vr:
- 50 µA @ 400 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR1A400P1-7 FAQ
1.How can I place an order for SBR1A400P1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR1A400P1-7 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 SBR1A400P1-7 reliable?
The price and inventory of SBR1A400P1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR1A400P1-7 is usually 5 days.
3.What payment methods are accepted for SBR1A400P1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR1A400P1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR1A400P1-7?
SBR1A400P1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR1A400P1-7 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 SBR1A400P1-7?
For technical support, including SBR1A400P1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR1A400P1-7 requirements.
6.How does Aetrix verify that SBR1A400P1-7 is sourced from the original manufacturer or authorized distributors?
All SBR1A400P1-7 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 SBR1A400P1-7 meets industry standards.
7.What is the process for return or replacement of SBR1A400P1-7?
All SBR1A400P1-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBR1A400P1-7, 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 SBR1A400P1-7 part is unused and in its original packaging.
Return procedure for SBR1A400P1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR1A400P1-7 Tags
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Diodes Incorporated
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