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Diodes Incorporated SBRT3U40P1Q-7
- Part No.:
- SBRT3U40P1Q-7
- Manufacturer:
- Diodes Incorporated
- Category:
- Single Diodes
- Package:
- POWERDI®123
- Datasheet:
-
SBRT3U40P1Q-7.pdf
- Description:
- DIODE SBR 40V 3A POWERDI123
- Quantity:
- Payment:
- Shipping:
Inventory:4,097
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Product details
Overview
SBRT3U40P1Q-7 from Diodes Incorporated is a 40 V, 3 A Trench Super Barrier Rectifier (SBR®) in PowerDI123 package, featuring ultra-low 0.49 V forward voltage at 3 A/25°C and only 180 µA reverse leakage at 40 V/25°C. It serves as a high-efficiency, thermally stable rectifier in MR16 LED driver bridge configurations.
For engineers reviewing the SBRT3U40P1Q-7 datasheet, SBRT3U40P1Q-7 pinout, SBRT3U40P1Q-7 application, or SBRT3U40P1Q-7 equivalent, key selection criteria include low VF for efficiency-critical 12–24 V AC/DC bridges, AEC-Q101 qualification for automotive lighting, and PowerDI123 thermal performance under sustained 125°C junction conditions.
Technical Context
This SBR device uses patented trench-based super barrier architecture to achieve lower forward voltage than Schottky diodes while maintaining superior high-temperature reverse leakage stability-critical for MR16 halogen/LED retrofit lamps operating in enclosed, thermally constrained fixtures.
Its 35 °C/W junction-to-case thermal resistance and 138 °C/W junction-to-ambient rating (on FR-4) enable reliable 3 A average current handling without forced air, provided board layout follows recommended pad dimensions and copper pour guidelines per Diodes' PowerDI123 footprint spec.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; supports 24 VAC input bridges with safety margin. |
| IO (AV) | 3 A - Continuous average forward current at TA = +25°C; derates to ~1.8 A at +100°C ambient per Figure 5. |
| VF Max | 0.49 V @ 3 A, 25°C - Enables >92% conduction efficiency in 24 V systems; reduces I²R loss vs. standard Schottky. |
| IR Max | 180 µA @ 40 V, 25°C - Low leakage preserves system standby power; remains <40 µA at 125°C for thermal runaway immunity. |
| tRR | 14 ns - Fast recovery minimizes switching loss in high-frequency bridge rectification (e.g., 20–100 kHz resonant drivers). |
| RθJC | 35 °C/W - Enables direct thermal coupling to PCB copper; supports compact MR16 lamp PCBs with minimal heatsinking. |
| Package | PowerDI123 - 1.0 mm max height; fits <12 mm total lamp height; lead-free, halogen-free, RoHS 3 compliant. |
Pinout & Package
PowerDI123 is a surface-mount, single-diode package with cathode band marking on top surface. Its 3-pin configuration (anode–cathode–anode) is internally connected as a single diode; only two terminals are electrically active: anode (pin 1 & 3) and cathode (pin 2). Polarity is confirmed by cathode band adjacent to pin 2.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 & Pin 3 | Anode | Internally shorted anode terminals; connect to AC input or positive rail side of bridge leg. |
| Pin 2 | Cathode | Output terminal; connects to DC output node or load return path; marked with cathode band. |
Key Features
| Feature | Design Value |
|---|---|
| Trench SBR® Technology | Combines MOSFET-like barrier control with PN junction robustness-delivers Schottky-level VF with silicon diode leakage stability. |
| AEC-Q101 Qualified | Validated for automotive lighting applications including headlamp modules and interior LED drivers requiring PPAP documentation. |
| Thermal Profile | 1.0 mm max height enables use in ultra-thin MR16 and GU10 retrofit lamps where vertical space is limited to <12 mm. |
| Green Construction | Halogen- and antimony-free molding compound (<900 ppm Br/Cl, <1000 ppm Sb); meets JEDEC MSL Level 1 moisture sensitivity. |
Applications
| MR16 LED Retrofit Lamp | Automotive Interior Lighting |
|---|---|
Use Scenario: Compact 12 VAC-powered LED lamp replacing halogen MR16 bulbs in track and recessed lighting. IC Role / Device Role / Timing Role: Bridge rectifier diode in full-wave Graetz configuration delivering regulated DC to constant-current LED driver IC. Use Value: 0.49 V VF reduces conduction loss by ~35% vs. standard 1N4007, enabling higher lumen output within same thermal envelope. | Use Scenario: 24 VDC cabin lighting module powering map lights and footwell LEDs in passenger vehicles. IC Role / Device Role / Timing Role: Reverse polarity protection diode on main power input rail before DC-DC converter and LED driver stages. Use Value: AEC-Q101 qualification ensures reliability across -40°C to +125°C ambient; <40 µA IR at 125°C prevents battery drain during long-term vehicle off-state. |
| Industrial Control Panel Power Supply | Smart Home Gateway Power Input |
Use Scenario: DIN-rail mounted 24 VAC-to-DC power supply feeding PLC I/O modules and sensors. IC Role / Device Role / Timing Role: Output rectifier in secondary-side synchronous or passive rectification stage of flyback transformer. Use Value: 35 °C/W RθJC allows direct PCB copper thermal path-eliminates need for discrete heatsink in space-constrained enclosures. | Use Scenario: Low-profile wall-mounted smart home hub with integrated AC/DC adapter and USB-C PD port. IC Role / Device Role / Timing Role: Blocking diode isolating primary AC/DC output from backup battery charging circuit during mains operation. Use Value: 14 ns tRR suppresses ringing in 65–100 kHz SMPS designs; 180 µA IR at 25°C ensures <1 µW standby dissipation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SBRT3U40P1-7 | Non-automotive grade; no AEC-Q101 qualification; identical electrical specs and package. | Suitable for commercial lighting and industrial power supplies where automotive qualification is not required. | Select when cost sensitivity outweighs automotive compliance needs and PPAP documentation is unnecessary. |
| SBRT5U40P1Q-7 | 5 A IO rating; same VF (0.49 V), VRRM (40 V), and PowerDI123 package; higher IFSM (100 A). | Used in higher-power MR16 variants or dual-channel LED drivers requiring >3 A peak current capability. | Choose when future-proofing for higher load currents or designing multi-lamp controllers with shared rectification. |
Compared with SBRT3U40P1-7 and SBRT5U40P1Q-7, the SBRT3U40P1Q-7 uniquely balances AEC-Q101 compliance, 3 A capacity, and ultra-low profile-making it optimal for volume automotive lighting where qualification, size, and thermal stability are jointly critical.
Availability
SBRT3U40P1Q-7 is available at Aetrix Electronics and suitable for MR16 LED retrofit lamps, automotive interior lighting modules, and industrial DIN-rail power supplies requiring stable component supply with automotive-grade traceability.
Supply support for SBRT3U40P1Q-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 delivers high-efficiency, high-reliability rectifiers optimized for space- and thermally constrained AC/DC and DC/DC conversion in lighting, automotive, and industrial power systems.
FAQ
What is the maximum junction temperature for continuous operation?
The SBRT3U40P1Q-7 has an operating junction temperature range of –65°C to +150°C. For continuous 3 A operation, thermal design must ensure TJ does not exceed +150°C-achievable with ≥1 in² 2-oz copper pour and proper airflow per Figure 5 derating curve.
Is the PowerDI123 package compatible with standard reflow profiles?
Yes-the PowerDI123 package is qualified for lead-free reflow per JEDEC J-STD-020, with MSL Level 1 rating. Peak temperature must not exceed 260°C, and time above 217°C should be 60–150 seconds using standard Pb-free profile.
How does the SBR® technology differ from Schottky and standard PN diodes?
SBR® uses a trench-etched super barrier structure that achieves Schottky-like forward voltage (0.49 V) but with silicon PN diode leakage behavior-enabling <40 µA IR at 125°C versus >1 mA for comparable Schottkys, eliminating thermal runaway risk in sealed fixtures.
Can SBRT3U40P1Q-7 replace SBRT3U40P1-7 in existing designs?
Yes-SBRT3U40P1Q-7 is a drop-in replacement for SBRT3U40P1-7 in terms of pinout, package, and electrical specs. The "Q" suffix adds AEC-Q101 qualification, PPAP capability, and IATF 16949 manufacturing controls-no layout or firmware changes needed.
SBRT3U40P1Q-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- POWERDI®123
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 490 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 180 µA @ 40 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PowerDI™ 123
- Operating Temperature - Junction:
- -65°C ~ 150°C
SBRT3U40P1Q-7 FAQ
1.How can I place an order for SBRT3U40P1Q-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRT3U40P1Q-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 SBRT3U40P1Q-7 reliable?
The price and inventory of SBRT3U40P1Q-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRT3U40P1Q-7 is usually 5 days.
3.What payment methods are accepted for SBRT3U40P1Q-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRT3U40P1Q-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRT3U40P1Q-7?
SBRT3U40P1Q-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRT3U40P1Q-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 SBRT3U40P1Q-7?
For technical support, including SBRT3U40P1Q-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRT3U40P1Q-7 requirements.
6.How does Aetrix verify that SBRT3U40P1Q-7 is sourced from the original manufacturer or authorized distributors?
All SBRT3U40P1Q-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 SBRT3U40P1Q-7 meets industry standards.
7.What is the process for return or replacement of SBRT3U40P1Q-7?
All SBRT3U40P1Q-7 units undergo pre-shipment inspection (PSI). If there is an issue with SBRT3U40P1Q-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 SBRT3U40P1Q-7 part is unused and in its original packaging.
Return procedure for SBRT3U40P1Q-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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Diodes Incorporated
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