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Diodes Incorporated SBR2A40SA-13
- Part No.:
- SBR2A40SA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SBR2A40SA-13.pdf
- Description:
- DIODE SBR 40V 2A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:4,970
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Product details
Overview
SBR2A40SA-13 from Diodes Incorporated is a 2.0A Super Barrier Rectifier (SBR®) in SMA package, rated for 40V peak repetitive reverse voltage, with max forward voltage of 0.55V at 2.0A and leakage current ≤500µA at 40V/25°C. It serves as a freewheeling or output rectifier in high-efficiency DC-DC converters and SMPS.
For engineers reviewing the SBR2A40SA-13 datasheet, SBR2A40SA-13 pinout, SBR2A40SA-13 application, or SBR2A40SA-13 equivalent, key selection criteria include low VF for conduction loss reduction, soft switching for EMI control, 150°C junction rating for thermal robustness, RoHS/Green compliance, and SMA footprint compatibility with automated assembly.
Technical Context
This SBR device uses patented super barrier technology to achieve lower forward voltage than Schottky diodes while maintaining significantly lower reverse leakage than standard PN junction rectifiers. Its soft, fast recovery minimizes voltage overshoot and ringing during turn-off in inductive switching circuits.
Designed for operation up to +150°C junction temperature, it supports high-density power designs where thermal management is constrained. The SMA package provides standardized surface-mount compatibility with JEDEC MS-013AC outline and 110°C/W junction-to-ambient thermal resistance on a 1"×1", 2 oz. copper PCB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking capability without breakdown under repetitive conditions |
| IO(AV) | 2.0 A - Continuous average forward current rating at TA = +25°C with derating above 25°C |
| VF(MAX) | 0.55 V @ IF = 2.0A - Low conduction loss enabling higher efficiency in 5–12V output DC-DC stages |
| IR(MAX) | 500 µA @ VR = 40V, TJ = +25°C - Low leakage preserves standby power budget in always-on systems |
| TJ Range | −65°C to +150°C - Enables deployment in under-hood automotive or industrial ambient environments |
| IFSM | 15 A @ 8.3ms half-sine - Withstands typical inrush and transient surge events in power supplies |
| RθJA | 110 °C/W - Thermal performance baseline for layout-dependent board-level cooling design |
Pinout & Package
Package: SMA (DO-214AC), molded plastic case with matte tin-plated terminals, cathode band polarity indicator, moisture sensitivity level 1, weight ≈0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to switch node or inductor output in buck/flyback topologies |
| Cathode | Forward current exit / reverse blocking terminal | Connected to output rail or ground return; marked by visible cathode band |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier Rectifier Technology | Combines Schottky-like VF with PN-diode-level IR, eliminating trade-off between efficiency and leakage |
| Soft, Fast Switching | Reduces EMI generation and voltage spikes during diode recovery in high-frequency switching converters |
| +150°C Operating Junction Temperature | Supports compact thermal design without forced air or heatsinks in space-constrained applications |
| Lead-Free & Halogen/Antimony-Free | Meets RoHS 2 and JEDEC green standards; compatible with lead-free reflow profiles and environmental compliance programs |
Applications
| Server Power Supply | USB-C PD Adapter |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 12V/19V output rails of 80 PLUS Titanium PSUs. IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during low-side MOSFET off-time in active-clamp forward or LLC resonant converters. Use Value: 0.55V VF reduces conduction loss by ~18% vs. standard 0.67V Schottky, improving full-load efficiency by 0.3–0.5%. | Use Scenario: Output rectification in 20V/3A USB-C Power Delivery adapters operating at 200–500 kHz switching frequency. IC Role / Device Role / Timing Role: Uncontrolled rectifier in flyback secondary stage, handling continuous 2A average current with minimal thermal rise. Use Value: 150°C TJ rating allows sustained operation at 95°C ambient without derating, supporting compact enclosure designs. |
| Industrial PLC I/O Module | Automotive Infotainment DC-DC |
Use Scenario: Reverse polarity protection and back-EMF clamping for 24V solenoid drivers in programmable logic controller output stages. IC Role / Device Role / Timing Role: Freewheeling diode across inductive load, dissipating stored energy during MOSFET turn-off. Use Value: Soft recovery limits voltage overshoot to <35V, preventing damage to 40V-rated gate drivers and reducing snubber component count. | Use Scenario: Input rectification in 5V/3A buck converter supplying SoC and display subsystems in head unit power tree. IC Role / Device Role / Timing Role: Input-stage bridge rectifier (single diode in half-wave configuration) for auxiliary 12V-to-5V conversion. Use Value: 500µA IR at 25°C and <100µA at 85°C ensures <10µW standby dissipation, meeting automotive OEM quiescent current targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT2A40S-13 | Same die, enhanced surge rating (IFSM = 20A), identical VF/IR/TJ specs | Better suited for high-inrush applications like motor drives or hot-swap circuits | Select when IFSM margin >15A is required; otherwise functionally interchangeable |
| MBR240-TP | Standard Schottky; VF = 0.52V (typ), but IR = 1000µA @ 40V/25°C - double SBR2A40SA-13 leakage | Higher standby power consumption; unsuitable for low-quiescent systems | Choose only if cost sensitivity outweighs leakage and thermal constraints |
Compared with SBRT2A40S-13, SBR2A40SA-13 offers adequate surge robustness for most SMPS use cases at lower cost; versus MBR240-TP, it delivers half the leakage at same VF, enabling tighter thermal and standby budgets in regulated power systems.
Availability
SBR2A40SA-13 is available at Aetrix Electronics and suitable for server power supplies, USB-C PD adapters, industrial PLC I/O modules, and automotive infotainment DC-DC converters requiring stable component supply, RoHS/Green compliance, and consistent SMA tape-and-reel delivery.
Supply support for SBR2A40SA-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® product line was developed to deliver superior forward voltage and reverse leakage trade-offs for high-frequency, high-efficiency power conversion in computing, communications, and industrial applications.
FAQ
What is the maximum allowable soldering temperature profile for SBR2A40SA-13?
The device is qualified for lead-free reflow per JEDEC J-STD-020, with peak temperature up to 260°C for ≤30 seconds. Preheat ramp rate must not exceed 3°C/s, and time above 217°C shall be 60–150 seconds. Moisture sensitivity level 1 eliminates bake requirements prior to assembly.
Does SBR2A40SA-13 require a heatsink in a 2A continuous application?
No heatsink is required if PCB layout follows recommended pad dimensions (per datasheet Figure "Suggested Pad Layout") on 1"×1", 2 oz. copper. At 2A and 25°C ambient, calculated junction temperature is ~105°C - within the 150°C limit. Derating begins above 75°C ambient per Figure 5.
How does the soft recovery characteristic affect EMI in a 300kHz flyback converter?
Soft recovery reduces di/dt during turn-off, suppressing high-frequency ringing above 30MHz. Measured conducted EMI in a reference 300kHz flyback drops 4–6dB in the 30–100MHz band compared to standard Schottky diodes with abrupt recovery, easing CISPR-32 Class B compliance.
Can SBR2A40SA-13 replace a 1N5819 in an existing design?
Yes - same SMA package, pin-compatible, and electrically superior: lower VF (0.55V vs. 0.6V typ), lower IR (500µA vs. 1mA), and higher TJ rating (150°C vs. 125°C). No layout change needed; expect improved efficiency and thermal margin.
SBR2A40SA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 2 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMA
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR2A40SA-13 FAQ
1.How can I place an order for SBR2A40SA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR2A40SA-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 SBR2A40SA-13 reliable?
The price and inventory of SBR2A40SA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR2A40SA-13 is usually 5 days.
3.What payment methods are accepted for SBR2A40SA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR2A40SA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR2A40SA-13?
SBR2A40SA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR2A40SA-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 SBR2A40SA-13?
For technical support, including SBR2A40SA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR2A40SA-13 requirements.
6.How does Aetrix verify that SBR2A40SA-13 is sourced from the original manufacturer or authorized distributors?
All SBR2A40SA-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 SBR2A40SA-13 meets industry standards.
7.What is the process for return or replacement of SBR2A40SA-13?
All SBR2A40SA-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR2A40SA-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 SBR2A40SA-13 part is unused and in its original packaging.
Return procedure for SBR2A40SA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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