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Diodes Incorporated SBR545SAFQ-13
- Part No.:
- SBR545SAFQ-13
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- DO-214AC, SMA Flat Leads
- Datasheet:
-
SBR545SAFQ-13.pdf
- Description:
- DIODE SBR 45V 5A SMAF T&R 10K
- Quantity:
- Payment:
- Shipping:
Inventory:10,149
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Product details
Overview
SBR545SAFQ-13 from Diodes Incorporated is a 5.0A, 45V surface-mount Super Barrier Rectifier in SMAF package, featuring 0.56V max forward voltage at 5A and 0.2mA max reverse leakage at 45V/25°C, with AEC-Q101 qualification for automotive-grade reliability in boost, blocking, and recirculating diode roles.
For engineers reviewing the SBR545SAFQ-13 datasheet, SBR545SAFQ-13 pinout, SBR545SAFQ-13 application, or SBR545SAFQ-13 equivalent, key selection criteria include VF stability across temperature, avalanche ruggedness (5× Schottky), IFSM=100A surge rating, and RoHS/Green compliance in low-profile SMAF packaging.
Technical Context
This Super Barrier Rectifier uses patented SBR® technology to deliver superior avalanche capability and thermal stability versus standard Schottky diodes, enabling reliable operation up to +150°C junction temperature. Its 14ns reverse recovery time and 215pF junction capacitance support high-frequency switching in DC-DC converters and power supplies.
The device operates with 20°C/W junction-to-case and 45°C/W junction-to-ambient thermal resistance on standard FR-4 PCBs, allowing sustained 5A average current under derated ambient conditions per Figure 1. Polarity is defined by cathode band marking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45V - Maximum repetitive reverse voltage before breakdown; defines safe DC blocking capability in 48V systems. |
| IO | 5.0A - Average rectified output current at TA=25°C; usable up to ~70°C ambient with derating per Figure 1. |
| VF (MAX) | 0.56V @ 5A, 25°C - Low conduction loss enables >95% efficiency in 5A power paths; drops to 0.485V at 125°C. |
| IR (MAX) | 0.2mA @ 45V, 25°C - Low leakage preserves system standby power; rises to 43mA at 125°C but remains stable vs. Schottky. |
| IFSM | 100A - Non-repetitive surge rating for 8.3ms half-sine; supports inrush and fault-current handling in automotive modules. |
| tRR | 14ns - Fast reverse recovery minimizes switching loss and EMI in high-frequency (>100kHz) SMPS topologies. |
| RθJA | 45°C/W - Thermal resistance on 1"×1", 2oz FR-4 board; informs heatsinking requirements for continuous 5A operation. |
Pinout & Package
Package: SMAF (Surface-Mount Axial Flat), molded plastic, UL 94V-0 rated, 0.035g weight, matte tin annealed terminals, cathode band polarity marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Input current terminal | Accepts forward current during conduction; connects to source side in boost/blocking configurations. |
| Cathode | Output current terminal | Delivers rectified current; marked by visible band; connects to load or switch node in recirculation paths. |
Key Features
| Feature | Design Value |
|---|---|
| Avalanche ruggedness | 5× higher than Schottky diodes - enables robust operation under transient overvoltage without failure in automotive load-dump scenarios. |
| High-temp IR stability | 43mA max leakage at 125°C - maintains low standby loss and system efficiency in under-hood environments. |
| Low VF drift with temperature | 0.485V @ 5A, 125°C - ensures consistent conduction loss across full operating range, simplifying thermal design. |
| AEC-Q101 qualification | PPAP-capable, IATF 16949 manufacturing - meets automotive change control and traceability requirements for Tier-1 BOMs. |
| Green compliance | Halogen- and antimony-free, RoHS 3 compliant - satisfies global environmental regulations without performance trade-offs. |
Applications
| Automotive DC-DC Converters | Industrial Power Supplies |
|---|---|
Use Scenario: High-efficiency 12V–48V bidirectional DC-DC conversion in 48V mild-hybrid systems. IC Role / Device Role / Timing Role: Boost diode in synchronous rectifier stage, handling 5A continuous current with minimal VF-related loss. Use Value: 0.56V VF at 25°C and 0.485V at 125°C directly reduces conduction loss by ~15% vs. comparable Schottky diodes, improving overall converter efficiency. | Use Scenario: Output rectification in industrial AC-DC front-end supplies with wide ambient temperature range. IC Role / Device Role / Timing Role: Blocking diode preventing backfeed from auxiliary rails during brownout conditions. Use Value: 0.2mA IR at 25°C and stable leakage up to 125°C ensure low standby power and prevent false triggering of protection circuits. |
| LED Driver Recirculation | Telecom Base Station Power |
Use Scenario: Freewheeling path in constant-current LED drivers for street lighting with thermal cycling. IC Role / Device Role / Timing Role: Recirculating diode providing low-loss current path during MOSFET off-time in buck topology. Use Value: 14ns tRR and 215pF CJ minimize switching noise and voltage overshoot, reducing EMI filter burden and improving EMC compliance. | Use Scenario: Input rectification in telecom -48V distributed power architecture with high reliability demand. IC Role / Device Role / Timing Role: Primary rectifier in hot-swap capable power modules requiring surge immunity and long-term stability. Use Value: 100A IFSM and AEC-Q101 qualification provide validated surge margin and field-proven reliability beyond standard commercial-grade parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT545S-13 | Same die, SMA package (not SMAF); RθJA = 50°C/W vs. 45°C/W; 0.05g weight. | Less compact footprint; slightly higher thermal resistance limits high-density layout use. | Select when SMA footprint compatibility is required over ultra-low profile. |
| MBR545F-TP | Standard Schottky; VF = 0.58V @ 5A; IR = 0.5mA @ 25°C; no AEC-Q101; lower avalanche rating. | Lacks automotive qualification and thermal leakage stability; unsuitable for under-hood or PPAP-driven designs. | Use only in cost-sensitive commercial applications where AEC-Q101 and high-temp IR are not required. |
Compared with SBRT545S-13 and MBR545F-TP, the SBR545SAFQ-13 delivers superior thermal performance in constrained space, verified automotive qualification, and significantly lower high-temperature leakage-making it the preferred choice for automotive and industrial applications demanding long-term reliability and efficiency.
Availability
SBR545SAFQ-13 is available at Aetrix Electronics and suitable for automotive DC-DC converters, industrial power supplies, and LED driver recirculation circuits requiring stable component supply, AEC-Q101 compliance, and low-VF rectification performance.
Supply support for SBR545SAFQ-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® Super Barrier Rectifier product line targets high-reliability power conversion applications where Schottky limitations-especially thermal leakage and avalanche weakness-are unacceptable, particularly in automotive and industrial environments.
FAQ
Is SBR545SAFQ-13 pin-compatible with standard SMA diodes?
No. While both use SMA-family footprints, SBR545SAFQ-13 is in the thinner SMAF package (max height 1.10mm vs. SMA's 2.29mm), requiring adjusted stencil and reflow profiles. Pad layout matches Diodes' recommended SMAF dimensions (C=4.00mm, X=2.50mm), not generic SMA.
What is the maximum continuous operating temperature for SBR545SAFQ-13?
The device supports continuous operation up to +150°C junction temperature (TJ). Ambient temperature must be limited per the derating curve in Figure 1: at 100°C TA, IO drops to ~3.5A on standard FR-4; forced air or copper pour extends usable ambient range.
Does SBR545SAFQ-13 require special PCB layout considerations?
Yes. Use the exact pad dimensions from Diodes' SMAF outline (C=4.00mm, G=1.50mm, X=2.50mm) to ensure solder joint integrity and thermal transfer. Avoid thermal relief on cathode/anode pads to maintain RθJC=20°C/W; minimum 0.56"×0.73" copper area recommended per datasheet Note 5.
How does the SBR® technology differ from standard Schottky rectifiers?
SBR® uses a modified epitaxial structure that increases avalanche energy handling fivefold versus Schottky while retaining low VF and fast tRR. Unlike Schottky, it avoids catastrophic failure under repetitive overvoltage transients-critical for automotive load-dump survivability per ISO 7637-2.
SBR545SAFQ-13 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- DO-214AC, SMA Flat Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 45 V
- Current - Average Rectified (Io):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 560 mV @ 5 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 200 µA @ 45 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SMAF
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBR545SAFQ-13 FAQ
1.How can I place an order for SBR545SAFQ-13 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR545SAFQ-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 SBR545SAFQ-13 reliable?
The price and inventory of SBR545SAFQ-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR545SAFQ-13 is usually 5 days.
3.What payment methods are accepted for SBR545SAFQ-13?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR545SAFQ-13 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR545SAFQ-13?
SBR545SAFQ-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR545SAFQ-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 SBR545SAFQ-13?
For technical support, including SBR545SAFQ-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR545SAFQ-13 requirements.
6.How does Aetrix verify that SBR545SAFQ-13 is sourced from the original manufacturer or authorized distributors?
All SBR545SAFQ-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 SBR545SAFQ-13 meets industry standards.
7.What is the process for return or replacement of SBR545SAFQ-13?
All SBR545SAFQ-13 units undergo pre-shipment inspection (PSI). If there is an issue with SBR545SAFQ-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 SBR545SAFQ-13 part is unused and in its original packaging.
Return procedure for SBR545SAFQ-13:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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