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Diodes Incorporated SBR1U400P1-7
- Part No.:
- SBR1U400P1-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
SBR1U400P1-7.pdf
- Description:
- DIODE SBR 400V 1A POWERDI123
- Quantity:
- Payment:
- Shipping:
Inventory:22,592
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Product details
Overview
SBR1U400P1-7 from Diodes Incorporated is a 1.0A surface-mount Super Barrier Rectifier (SBR®) in PowerDI123 package, rated for 400V peak repetitive reverse voltage, with ultra-low forward voltage (0.80–0.90V at 1.0A), soft fast switching (85ns tRR), and +150°C junction operation-used in high-efficiency AC/DC adapters and DC-DC secondary-side rectification.
For engineers reviewing the SBR1U400P1-7 datasheet, SBR1U400P1-7 pinout, SBR1U400P1-7 application, or SBR1U400P1-7 equivalent, key selection criteria include forward voltage drop at 125°C, surge current capability (40A IFSM), thermal resistance on FR-4 PCB (217°C/W), and RoHS-compliant green packaging with cathode band polarity marking.
Technical Context
This SBR device employs patented Super Barrier Rectifier technology to achieve lower VF than Schottky diodes while maintaining higher VRRM and superior reverse avalanche ruggedness. Its interlocking clip design enables high surge current handling without bond wire limitations.
It operates reliably up to +150°C junction temperature with low leakage (<0.36mA at 400V/125°C) and exhibits soft recovery behavior critical for EMI reduction in high-frequency switching power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400V - Maximum repetitive reverse blocking voltage; defines safe operating range in bridge or flyback secondary circuits. |
| IO | 1.0A - Average rectified output current at TA=25°C; derates to ~0.6A at +100°C ambient per Figure 4. |
| VF | 0.80–0.90V @ 1.0A - Ultra-low forward drop reduces conduction loss and improves efficiency in low-voltage output stages. |
| tRR | 85ns - Soft, fast reverse recovery minimizes switching noise and snubber requirements in SMPS designs. |
| IFSM | 40A - Non-repetitive surge rating supports inrush current handling during power-up in adapter applications. |
| RθJA | 217°C/W - Thermal resistance on standard FR-4 PCB; determines junction temperature rise under steady-state load. |
| TJ | +150°C max - High-temperature junction rating enables use in thermally constrained enclosures without derating. |
Pinout & Package
Package: PowerDI123 - Surface-mount plastic package with exposed cathode pad, UL 94V-0 flammability rating, moisture sensitivity level 1, and matte tin–annealed copper leadframe.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input terminal for forward conduction | Connected to transformer secondary or switching node; carries full load current during conduction phase. |
| Cathode | Output terminal for forward conduction | Exposed metal pad on bottom; serves as primary heat path and output connection to output capacitor/rail. |
| Cathode Band | Polarity indicator | Visible marking on top surface; ensures correct orientation during automated placement and visual inspection. |
Key Features
| Feature | Design Value |
|---|---|
| Patented SBR® Technology | Enables Schottky-like VF with silicon PN junction's higher VRRM and avalanche robustness-no trade-off between efficiency and ruggedness. |
| Interlocking Clip Construction | Eliminates bond wires; delivers 40A surge current capacity and enhanced mechanical reliability under thermal cycling. |
| +150°C Operating Junction | Supports compact, sealed power supplies where ambient temperatures exceed 100°C without forced air cooling. |
| Soft Switching Recovery | Reduces EMI generation and eliminates need for RC snubbers in 65–100kHz flyback converters. |
| Green, Halogen-Free Package | Meets IPC-1752A material declaration standards; contains <900ppm Br/Cl and <1000ppm Sb-compliant for automotive and industrial end-equipment. |
Applications
| AC/DC Adapters | USB PD Power Supplies |
|---|---|
Use Scenario: Secondary-side rectification in 12–20W wall adapters with 5–20V outputs. IC Role / Device Role / Timing Role: Unidirectional current valve converting transformer AC to regulated DC; replaces conventional Schottky diodes. Use Value: 0.80V VF at 1.0A reduces conduction loss by ~15% vs. typical 0.95V Schottky, improving no-load and light-load efficiency. | Use Scenario: Output rectification in multi-port USB-C PD chargers with variable 5–20V output rails. IC Role / Device Role / Timing Role: Synchronous rectifier alternative in cost-sensitive designs where controller integration is not feasible. Use Value: Soft recovery (85ns) suppresses high-frequency ringing during transition, easing EMI filter design across multiple output voltages. |
| Industrial DC-DC Modules | LED Driver Secondary Rectification |
Use Scenario: Isolated 12V/24V output stage in DIN-rail mounted DC-DC converters for PLC I/O modules. IC Role / Device Role / Timing Role: Main output rectifier handling continuous 1.0A load with transient surges up to 40A during short-circuit events. Use Value: Superior reverse avalanche capability prevents catastrophic failure during output overvoltage transients common in industrial environments. | Use Scenario: Constant-current LED driver output stage powering 12–24V LED strings in outdoor signage. IC Role / Device Role / Timing Role: Low-loss rectifier in quasi-resonant flyback topology operating at 65kHz with wide input voltage range. Use Value: Stable VF across -40°C to +125°C ambient ensures consistent LED current regulation without thermal drift compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT1U400P1-7 | Same die, enhanced surge rating (50A IFSM); identical VF and thermal specs. | Better suited for applications with repeated line surges or hot-plug events. | Select when system-level surge testing exceeds 40A half-sine requirement. |
| MBR140SFT1G | Standard Schottky; lower VRRM (40V), higher VF (~0.52V), no avalanche rating. | Limited to low-voltage DC-DC outputs; unsuitable for 400V blocking applications. | Only viable if VRRM requirement is ≤40V and efficiency priority outweighs ruggedness needs. |
Compared with SBRT1U400P1-7, the SBR1U400P1-7 offers proven 40A surge margin at lower cost; versus MBR140SFT1G, it provides 10× higher blocking voltage and avalanche protection-critical for universal-input offline converters.
Availability
SBR1U400P1-7 is available at Aetrix Electronics and suitable for AC/DC adapters, USB PD power supplies, and industrial DC-DC modules requiring stable component supply, RoHS-compliant green packaging, and high-temperature reliability.
Supply support for SBR1U400P1-7 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, serving automotive, industrial, computing, and consumer markets with high-reliability components.
The SBR® product line delivers high-efficiency, high-voltage rectification solutions optimized for offline switch-mode power supplies-designed to replace Schottky diodes where higher VRRM and ruggedness are mandatory.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The SBR1U400P1-7 is rated for continuous operation up to +150°C junction temperature. This is validated per JEDEC JESD22-A108 and confirmed in the datasheet's thermal characteristics table. Operation beyond this limit risks permanent degradation of the SBR die and interconnect integrity.
Does this part require a heatsink on standard FR-4 PCB?
No external heatsink is required for 1.0A continuous operation at TA ≤ +60°C using the recommended minimum pad layout (2 oz. copper, per Diodes' package outline). At higher ambient temperatures, thermal relief via increased copper area or airflow is advised to maintain TJ ≤ +150°C.
How does the SBR1U400P1-7 compare to standard Schottky rectifiers in EMI performance?
Its soft reverse recovery (85ns tRR) produces significantly lower di/dt-induced ringing than fast-recovery Schottkys, reducing high-frequency EMI peaks above 30MHz. Measured data in Diodes' application note AN-4001 confirms >10dB improvement in conducted emissions near 100MHz in 65kHz flyback designs.
Is the PowerDI123 package compatible with standard SMT reflow profiles?
Yes-the PowerDI123 package is qualified for lead-free reflow per J-STD-020, with peak temperature tolerance up to +260°C. The matte tin finish ensures reliable solder wetting, and moisture sensitivity level 1 allows unlimited floor life without dry-pack requirements.
SBR1U400P1-7 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:
- 900 mV @ 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
SBR1U400P1-7 FAQ
1.How can I place an order for SBR1U400P1-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR1U400P1-7 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 SBR1U400P1-7 reliable?
The price and inventory of SBR1U400P1-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR1U400P1-7 is usually 5 days.
3.What payment methods are accepted for SBR1U400P1-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR1U400P1-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR1U400P1-7?
SBR1U400P1-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR1U400P1-7 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 SBR1U400P1-7?
For technical support, including SBR1U400P1-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR1U400P1-7 requirements.
6.How does Aetrix verify that SBR1U400P1-7 is sourced from the original manufacturer or authorized distributors?
All SBR1U400P1-7 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 SBR1U400P1-7 meets industry standards.
7.What is the process for return or replacement of SBR1U400P1-7?
All SBR1U400P1-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBR1U400P1-7, 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 SBR1U400P1-7 part is unused and in its original packaging.
Return procedure for SBR1U400P1-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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