My Inquiry
My Account
Diodes Incorporated SBRT40M80CTB
- Part No.:
- SBRT40M80CTB
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBRT40M80CTB.pdf
- Description:
- DIODE ARRAY SBR 80V 20A TO-263
- Quantity:
- Payment:
- Shipping:
Inventory:4,481
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SBRT40M80CTB from Diodes Incorporated is a 40A dual common-cathode Trench Super Barrier Rectifier (SBR®) in TO263AB (D2PAK) package, rated for 80V peak repetitive reverse voltage, 0.72V max forward voltage at 20A/125°C, and 65µA max reverse leakage at 80V/125°C; used as primary rectifier or freewheel diode in high-efficiency SMPS and DC-DC converters.
For engineers reviewing the SBRT40M80CTB datasheet, SBRT40M80CTB pinout, SBRT40M80CTB application, or SBRT40M80CTB equivalent, key selection criteria include low VF stability across temperature, high-temperature IR suppression, dual-leg thermal coupling in D2PAK, and RoHS-compliant green packaging for industrial power supplies.
Technical Context
This device implements patented Trench SBR® technology to achieve Schottky-like forward conduction with significantly lower reverse leakage than standard Schottky diodes-enabling stable operation up to +150°C junction temperature. Its dual common-cathode configuration supports parallel output paths with shared thermal mass.
The TO263AB package delivers 12°C/W typical junction-to-case thermal resistance when mounted on a 2"×2" aluminum board with heatsink, supporting 40A total average rectified current with proper derating above +25°C ambient per Figure 3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 80 V - Maximum non-repetitive reverse blocking voltage per leg without breakdown |
| IO (per leg) | 20 A - Continuous average forward current rating per anode leg at TA = +25°C |
| VF (max) | 0.72 V @ 20A, +125°C - Ensures <14.4W conduction loss per leg under worst-case thermal conditions |
| IR (max) | 65 µA @ 80V, +125°C - Enables stable blocking in high-temp DC-DC secondaries without thermal runaway |
| RθJC | 12 °C/W - Allows direct thermal path to heatsink; critical for maintaining TJ ≤ 150°C at full load |
| Junction Temp | –55°C to +150°C - Supports operation in automotive under-hood and industrial motor drive environments |
Pinout & Package
Package: TO263AB (D2PAK), surface-mount, single-row 3-terminal outline with exposed cathode pad for thermal and electrical connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode 1 (A1) | Input terminal for first rectifier leg | Accepts AC or switched input; electrically isolated from A2; shares cathode node |
| Anode 2 (A2) | Input terminal for second rectifier leg | Enables dual-output or interleaved topology; identical electrical specs to A1 |
| Cathode (K) | Common output node for both legs | Large copper pad for low-inductance, high-current return path and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Trench SBR® Technology | Combines low VF of Schottky with Si PN junction's superior high-temp IR control-no guard ring or field plate needed |
| Low VF at High Temp | 0.63 V typ @ 20A/+125°C enables >95% efficiency in 12V→5V/20A buck converters at full load |
| Thermal Stability | IR increases only 6.5× from 25°C to 125°C (vs. >1000× for standard Schottky), preventing thermal runaway |
| Green Packaging | Halogen- and antimony-free molding compound (Br+Cl <1500 ppm, Sb <1000 ppm); UL 94V-0 rated |
Applications
| Server VRM Power Stage | Industrial DC-DC Converter |
|---|---|
Use Scenario: Primary-side synchronous rectification in 48V→12V/40A server voltage regulator modules. IC Role / Device Role / Timing Role: Dual-leg common-cathode rectifier replacing two discrete Schottkys to reduce layout area and thermal mismatch. Use Value: 0.72V VF max at 125°C maintains <1.5°C/W effective thermal rise vs. 2.1°C/W for legacy Schottky pairs. | Use Scenario: Output rectification in isolated 24V→5V/20A flyback converter for PLC I/O modules. IC Role / Device Role / Timing Role: Freewheel diode clamping transformer reset energy while minimizing conduction loss during duty cycle. Use Value: 65µA IR max at 125°C prevents output voltage drift under sustained 70°C ambient cabinet conditions. |
| AC-DC Adapter Secondary | Telecom PoE Midspan Supply |
Use Scenario: Secondary-side rectification in compact 90W laptop AC-DC adapters with tight thermal envelopes. IC Role / Device Role / Timing Role: Common-cathode dual rectifier delivering 20A per rail to dual-output (±12V) designs. Use Value: TO263AB footprint allows 30% smaller PCB area than dual-TO220 solution while maintaining 40A total output. | Use Scenario: DC-DC isolation barrier rectification in IEEE 802.3at PoE midspan injectors supplying 30W to remote endpoints. IC Role / Device Role / Timing Role: Blocking diode protecting upstream DC bus during hot-swap events and transient overloads. Use Value: 230A non-repetitive surge rating withstands 100ms inrush transients without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-efficiency rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS40H80CG | Higher VF (0.82V max @ 20A/125°C); same 80V VRRM and TO263AB package | Lower efficiency in thermally constrained 12V output rails; requires larger heatsink | Prefer when cost sensitivity outweighs 0.1V VF penalty and thermal margin exists |
| MBR4080CT | Standard Schottky; 120µA IR @ 80V/125°C; no trench structure | Unstable IR above 100°C risks thermal runaway in sealed enclosures | Only suitable for ambient-limited (<60°C) consumer-grade adapters with forced air cooling |
Compared with STPS40H80CG and MBR4080CT, SBRT40M80CTB delivers superior thermal reliability and conduction efficiency in high-density, high-ambient industrial power supplies-justifying its use where long-term unattended operation is required.
Availability
SBRT40M80CTB is available at Aetrix Electronics and suitable for SMPS, DC-DC converters, and AC-DC adaptors requiring stable component supply with guaranteed long-term manufacturability and green compliance.
Supply support for SBRT40M80CTB 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, specializing in high-performance power management, signal integrity, and protection solutions.
SBRT40M80CTB belongs to the Trench SBR® rectifier product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in space-constrained, thermally demanding power systems.
FAQ
What is the maximum junction temperature and how is it validated?
The SBRT40M80CTB is rated for continuous operation up to +150°C junction temperature, verified per JEDEC JESD22-A108 thermal cycling tests and confirmed by thermal resistance measurements (RθJC = 12°C/W) under defined heatsink conditions. Derating curves in Figure 3 define safe operating current versus ambient temperature.
Is SBRT40M80CTB pin-compatible with standard TO263AB dual diodes?
Yes-SBRT40M80CTB uses the industry-standard TO263AB (D2PAK) outline with identical mechanical dimensions, pad layout, and terminal assignment (A1, A2, K) as other dual common-cathode rectifiers in this package, enabling drop-in replacement in existing PCB designs.
How does its reverse leakage compare to conventional Schottky diodes at elevated temperature?
At 80V and +125°C, SBRT40M80CTB exhibits ≤65µA IR-approximately 1/10th the leakage of typical Schottky rectifiers (e.g., MBR4080CT at ~120µA). This is achieved via Trench SBR®'s integrated PN junction barrier, not external guard rings.
Does the "Green" designation impact soldering or reliability?
No-the halogen- and antimony-free molding compound meets IPC-J-STD-020 moisture sensitivity Level 1 and passes MIL-STD-202 solderability testing. Matte tin terminations ensure robust reflow performance without voiding or dewetting, with no compromise in long-term HTOL or TC reliability.
SBRT40M80CTB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 80 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 720 mV @ 20 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 65 µA @ 80 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263
SBRT40M80CTB FAQ
1.How can I place an order for SBRT40M80CTB through Aetrix?
Please submit a Request for Quotation (RFQ) for SBRT40M80CTB 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 SBRT40M80CTB reliable?
The price and inventory of SBRT40M80CTB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBRT40M80CTB is usually 5 days.
3.What payment methods are accepted for SBRT40M80CTB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBRT40M80CTB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBRT40M80CTB?
SBRT40M80CTB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBRT40M80CTB 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 SBRT40M80CTB?
For technical support, including SBRT40M80CTB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBRT40M80CTB requirements.
6.How does Aetrix verify that SBRT40M80CTB is sourced from the original manufacturer or authorized distributors?
All SBRT40M80CTB 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 SBRT40M80CTB meets industry standards.
7.What is the process for return or replacement of SBRT40M80CTB?
All SBRT40M80CTB units undergo pre-shipment inspection (PSI). If there is an issue with SBRT40M80CTB, 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 SBRT40M80CTB part is unused and in its original packaging.
Return procedure for SBRT40M80CTB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBRT40M80CTB Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
-
BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
