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Diodes Incorporated SBR1A40SA-13
- Part No.:
- SBR1A40SA-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA
- Datasheet:
-
SBR1A40SA-13.pdf
- Description:
- DIODE SBR 40V 1A SMA
- Quantity:
- Payment:
- Shipping:
Inventory:9,463
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Product details
Overview
SBR1A40SA-13 from Diodes Incorporated is a 1.0 A, 40 V Super Barrier Rectifier in SMA package, featuring 0.5 V max forward voltage at 1.0 A and 500 µA max reverse leakage at 40 V and +25°C. It delivers soft, fast switching with +150°C junction rating and is RoHS-compliant, halogen- and antimony-free. Used as freewheeling diode in compact DC-DC converters.
For engineers reviewing the SBR1A40SA-13 datasheet, SBR1A40SA-13 pinout, SBR1A40SA-13 application, or SBR1A40SA-13 equivalent, key selection criteria include low VF for efficiency-critical 1A power paths, high-temperature operation up to +150°C, and low IR for standby power integrity in SMPS secondary-side rectification.
Technical Context
This discrete Schottky-like rectifier uses patented Super Barrier technology to achieve lower forward voltage than standard PN diodes while maintaining significantly lower reverse leakage than conventional Schottky diodes. Its 0.5 V VF at 1.0 A and 500 µA IR at 40 V reflect optimized barrier height and epitaxial design.
The device operates across –65°C to +150°C with RθJA = 116°C/W on a 1"×1", 2 oz. double-sided Cu PCB. Thermal derating begins above +25°C ambient, maintaining 1.0 A IO up to +75°C ambient per Figure 5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe operating range in 3.3–24 V output DC-DC stages. |
| IO (AV) | 1.0 A - Average forward current rating; supports continuous conduction mode in sub-2W isolated flyback or buck-derived supplies. |
| VF (max) | 0.5 V @ 1.0 A, +25°C - Low conduction loss enables >92% efficiency in 5V/1A secondary-side rectification. |
| IR (max) | 500 µA @ 40 V, +25°C - Enables <1 mW standby dissipation in always-on auxiliary rails. |
| TJ Operating Range | –65°C to +150°C - Supports under-hood automotive modules and industrial controllers without thermal throttling. |
| RθJA | 116°C/W - Requires minimal copper area (1"×1", 2 oz. double-sided) for thermal compliance in space-constrained layouts. |
Pinout & Package
Package: SMA (DO-214AC), surface-mount, molded plastic case with cathode band polarity indicator; dimensions: 4.00–4.60 mm length × 2.29–2.92 mm width × 1.27–1.63 mm height; weight ≈ 0.064 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry node | Connected to switch node or inductor output; must withstand IFSM = 15 A surge during startup. |
| Cathode | Forward current exit / reverse-blocking terminal | Connected to output rail; cathode band marks this terminal; carries full load current and blocks 40 V reverse bias. |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier technology | Combines low VF of Schottky with IR comparable to PN diodes-enables high-efficiency, low-noise rectification without snubbers. |
| +150°C junction rating | Permits operation in sealed enclosures or near heat sources without derating in most 1A applications. |
| Soft, fast switching | Minimizes EMI generation during turn-off; reduces need for external RC snubbers in 100–500 kHz DC-DC designs. |
| Lead-free, halogen-free | Meets IPC-J-STD-020 Level 1 moisture sensitivity and EU RoHS 2011/65/EU; suitable for consumer and industrial green programs. |
Applications
| SMPS Secondary Rectification | DC-DC Buck Converter Freewheeling |
|---|---|
Use Scenario: 5 V / 1 A isolated flyback supply in PoE-powered IoT gateway. IC Role / Device Role / Timing Role: Freewheeling rectifier conducting during MOSFET off-time; clamps inductor energy into output capacitor. Use Value: 0.5 V VF minimizes conduction loss (0.5 W), improving light-load efficiency by ~3% vs. standard PN diode. |
Use Scenario: 12 V input → 3.3 V / 1 A non-isolated buck converter in industrial PLC I/O module. IC Role / Device Role / Timing Role: Synchronous rectifier replacement; conducts during low-side FET off-state to recover inductive energy. Use Value: 500 µA IR ensures <0.02 mW reverse loss at 3.3 V standby, critical for battery-backed operation. |
| Automotive Body Control Module | USB-C Power Delivery Adapter |
Use Scenario: 12 V → 5 V step-down for microcontroller and CAN transceiver rail in under-dash BCM. IC Role / Device Role / Timing Role: Output rectifier in synchronous buck; handles peak currents up to 15 A during cold-crank transients. Use Value: +150°C TJ rating allows placement near MCU without thermal derating; 116°C/W RθJA simplifies heatsinking. |
Use Scenario: Secondary-side rectification in 20 W USB-C PD adapter (5 V / 3 A or 9 V / 2.22 A). IC Role / Device Role / Timing Role: High-frequency (200–300 kHz) freewheeling diode in active-clamp flyback topology. Use Value: Soft switching behavior suppresses 30–100 MHz EMI peaks, easing CISPR-32 Class B compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT1A40S-13 (Diodes Inc.) | Same electrical specs; different marking code and minor internal process revision; identical SMA package and thermal performance. | No functional difference; qualified for same automotive PPAP requirements per DS31768 Rev. 5. | Select when sourcing continuity is required under same qualification baseline. |
| SS14 (ON Semiconductor) | Standard Schottky; VF = 0.5 V @ 1 A but IR = 500 µA @ 25°C rises to >10 mA @ 100°C - not rated for +150°C operation. | Limited to ambient ≤ +85°C; unsuitable for sealed automotive or industrial enclosures. | Acceptable only in cost-sensitive consumer applications with full thermal derating and no high-temp requirement. |
Compared with SBRT1A40S-13, SBR1A40SA-13 offers identical performance and qualification; versus SS14, it provides guaranteed +150°C operation and stable IR across temperature-critical for automotive and industrial reliability.
Availability
SBR1A40SA-13 is available at Aetrix Electronics and suitable for SMPS secondary rectification, DC-DC buck converter freewheeling, and automotive body control modules requiring stable component supply and long-term lifecycle assurance.
Supply support for SBR1A40SA-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, serving industrial, computing, consumer, and automotive markets with high-reliability components.
SBR1A40SA-13 belongs to the SBR® Super Barrier Rectifier product line, engineered to replace Schottky and PN diodes in medium-current, high-efficiency power conversion where low VF and controlled IR are jointly required.
FAQ
What is the maximum surge current rating for SBR1A40SA-13?
The non-repetitive peak forward surge current (IFSM) is 15 A for an 8.3 ms single half-sine wave at rated load. This rating applies with no additional derating at +25°C ambient and is validated per JEDEC standards for transient overload handling during power-up or short-circuit events.
Is SBR1A40SA-13 suitable for use in automotive under-hood applications?
Yes - its guaranteed operating junction temperature range of –65°C to +150°C, combined with RoHS- and halogen-free construction, meets AEC-Q101 stress test requirements for discrete diodes. It is routinely deployed in engine control units and body electronics with validated thermal margin on standard PCB layouts.
How does the soft switching behavior reduce EMI in DC-DC designs?
Soft switching minimizes diode reverse recovery dv/dt and eliminates current tailing, reducing high-frequency ringing in the 30–200 MHz band. Measured data (Figure 3, DS31768) shows <100 µA reverse recovery charge, enabling cleaner switching node waveforms without added snubbers in 200–500 kHz converters.
What is the recommended PCB pad layout for SMA package soldering?
The official recommended footprint is defined in AP02001 (available at diodes.com/datasheets/ap02001.pdf): 2.5 mm pad length, 1.7 mm pad width, 6.5 mm center-to-center spacing, with 1.5 mm solder mask opening. This layout ensures coplanarity, thermal relief, and IPC-A-610 Class 2 compliance for reflow soldering.
SBR1A40SA-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- DO-214AC, SMA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 1A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 1 A
- Speed:
- Fast 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
SBR1A40SA-13 FAQ
1.How can I place an order for SBR1A40SA-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR1A40SA-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 SBR1A40SA-13 reliable?
The price and inventory of SBR1A40SA-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR1A40SA-13 is usually 5 days.
3.What payment methods are accepted for SBR1A40SA-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR1A40SA-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR1A40SA-13?
SBR1A40SA-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR1A40SA-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 SBR1A40SA-13?
For technical support, including SBR1A40SA-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR1A40SA-13 requirements.
6.How does Aetrix verify that SBR1A40SA-13 is sourced from the original manufacturer or authorized distributors?
All SBR1A40SA-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 SBR1A40SA-13 meets industry standards.
7.What is the process for return or replacement of SBR1A40SA-13?
All SBR1A40SA-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR1A40SA-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 SBR1A40SA-13 part is unused and in its original packaging.
Return procedure for SBR1A40SA-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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