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Diodes Incorporated SBR40U100CT
- Part No.:
- SBR40U100CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR40U100CT.pdf
- Description:
- DIODE ARRAY SBR 100V 40A TO220-3
- Quantity:
- Payment:
- Shipping:
Inventory:25
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Product details
Overview
SBR40U100CT from Diodes Incorporated is a 40A, 100V ultra-low VF super barrier rectifier in TO-220AB package, featuring patented SBR® technology, soft fast switching, and 150°C junction operation. It delivers 0.67V typical forward voltage at 20A/25°C and 0.64V at 20A/125°C, enabling high-efficiency AC/DC secondary-side rectification in server power supplies.
For engineers reviewing the SBR40U100CT datasheet, SBR40U100CT pinout, SBR40U100CT application, or SBR40U100CT equivalent, key selection criteria include forward voltage drop at elevated temperature, surge current rating (235A), thermal resistance (2°C/W per leg), and RoHS-compliant matte tin terminals on copper leadframe.
Technical Context
This dual-common-cathode super barrier rectifier integrates two independent 40A/100V diode elements in a single TO-220AB thermally optimized package. Its patented SBR structure replaces conventional PN junctions with low-barrier Schottky-like conduction while maintaining high reverse blocking and soft recovery characteristics.
Designed for high-frequency switching power supplies, it operates reliably up to 150°C junction temperature with 2°C/W thermal resistance per leg and supports 2000V isolation between terminals and heatsink-critical for isolated DC-DC converters requiring reinforced insulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM / VRWM | 100 V - Maximum reverse blocking voltage before breakdown; defines safe operating range in 48V–54V output rails. |
| IO @ TC=150°C | 40 A - Continuous average forward current per element at case temperature of 150°C; enables compact heatsink design. |
| VF @ 20A, 25°C | 0.67 V - Typical forward voltage drop per leg; reduces conduction loss by ~30% vs. standard Schottky diodes. |
| VF @ 20A, 125°C | 0.64 V - Lower VF at high temperature confirms stable performance under thermal stress in dense power modules. |
| IFSM (8.3ms) | 235 A - Non-repetitive surge current capability; withstands inrush during cold-start in telecom rectifiers. |
| RθJC (per leg) | 2 °C/W - Thermal resistance from junction to case; allows direct mounting to heatsink without thermal interface degradation. |
| IR @ 100V, 125°C | 40 mA - Max leakage current at full rated voltage and max junction temperature; ensures low standby loss in offline SMPS. |
Pinout & Package
Package: TO-220AB - 3-terminal molded plastic case (UL 94V-0), with center tab electrically connected to cathode, outer pins as anodes (dual-anode, common-cathode configuration). Matte tin-plated copper leadframe ensures MIL-STD-202 solderability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first rectifying element; connects to transformer secondary winding or input rail. |
| Pin 2 (Center Tab) | Common Cathode | Electrically tied to heatsink-mounting surface; serves as shared output node for both diodes. |
| Pin 3 (Right) | Anode 2 | Input terminal for second rectifying element; enables dual-phase or interleaved rectification topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low VF at high temperature | 0.64 V @ 20A/125°C - Enables >95% efficiency in 12V/48V output stages without forced air cooling. |
| Soft, fast switching | Low reverse recovery charge (Qrr) and minimal voltage overshoot - Reduces EMI in 300–500 kHz LLC resonant converters. |
| 150°C operating junction | Rated continuous operation up to TJ = 150°C - Supports high-density packaging in sealed server PSUs with limited airflow. |
| 2000V isolation (terminal-to-heatsink) | Withstands 2000VAC for 3 sec - Meets reinforced insulation requirements for medical and industrial isolated DC-DC modules. |
Applications
| Server Power Supply Rectification | Industrial DC-DC Converter Output Stage |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 12V/48V output rails of 80 PLUS Titanium PSUs. IC Role / Device Role / Timing Role: Dual-anode super barrier rectifier providing low-loss unidirectional current flow from transformer secondary to output capacitor bank. Use Value: 0.64V VF at 125°C reduces conduction loss by 1.2W per leg vs. standard Schottky, lowering thermal load on heatsink by 24°C. | Use Scenario: Output rectification in isolated 24V/36V industrial DC-DC modules powering PLC I/O cards. IC Role / Device Role / Timing Role: Common-cathode dual rectifier delivering parallel current paths with matched thermal behavior across both legs. Use Value: 2°C/W RθJC per leg enables direct bolt-down mounting to chassis ground plane, eliminating thermal pads and reducing assembly cost. |
| Telecom Rectifier Module | High-Density LED Driver Secondary Side |
Use Scenario: Hot-swap capable -48V telecom rectifier with N+1 redundancy and 235A surge tolerance. IC Role / Device Role / Timing Role: Primary rectifying device handling full load current plus transient surges during module insertion. Use Value: 235A IFSM rating supports 100ms inrush without derating, ensuring reliable hot-swap operation in distributed power architectures. | Use Scenario: Constant-current LED driver output stage in outdoor lighting with ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Low-VF rectifier minimizing voltage headroom loss between buck converter output and LED string. Use Value: 0.67V VF at 25°C preserves ≥3.5V headroom for 3.3V LED strings, extending dimming range and improving current regulation accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-40CPH01-M3 | 40A/100V, VF = 0.72V @ 20A/25°C, RθJC = 2.5°C/W, TO-247AC package | Larger footprint, higher thermal resistance, no common-cathode pinout | Select when higher surge margin (300A IFSM) is required and board space permits TO-247 layout. |
| ON Semiconductor MUR460G | 4A/600V ultrafast recovery diode, VF = 1.7V @ 4A/25°C, TO-220AC | Higher VF, lower current rating, faster recovery but no SBR low-loss benefit | Select only for high-voltage (>400V) flyback snubbers where low VF is secondary to reverse recovery speed. |
Compared with VS-40CPH01-M3 and MUR460G, the SBR40U100CT uniquely combines dual-anode common-cathode topology, sub-0.65V VF at 125°C, and 2°C/W thermal resistance-making it optimal for high-current, thermally constrained 100V-output rectification where efficiency and thermal density are primary constraints.
Availability
SBR40U100CT is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, telecom rectifier modules, and high-density LED drivers requiring stable component supply and long-term lifecycle support.
Supply support for SBR40U100CT 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 and manufacturing operations across Asia and the Americas.
The SBR® Super Barrier Rectifier product line targets high-efficiency secondary-side rectification in switched-mode power supplies, emphasizing ultra-low forward voltage, high-temperature stability, and soft switching for reduced EMI in datacenter and industrial power systems.
FAQ
What is the thermal resistance from junction to case per diode element?
The SBR40U100CT has a specified thermal resistance of 2°C/W per leg (RθJC), measured from each diode's junction to the common cathode tab. This value is confirmed in the Thermal Characteristics table of DS31204 Rev. 6–2 and applies under standard mounting conditions with flat, clean heatsink contact surface.
Is the center tab electrically isolated from the anode pins?
No-the center tab is the common cathode and is electrically connected to both diode cathodes. It is not isolated from the internal semiconductor structure and must be treated as a live terminal. Isolation testing (2000VAC) is defined between this tab and external heatsink mounting surface-not between pins.
Can SBR40U100CT replace standard Schottky diodes in existing designs?
Yes, with verification of layout compatibility: its TO-220AB pinout matches standard dual-diode packages, and its lower VF (0.64V vs. typical 0.75–0.85V) reduces conduction loss. However, designers must confirm that the lower reverse leakage (≤40mA at 125°C) does not affect feedback loop stability in voltage-mode controllers.
Does the "U" in SBR40U100CT indicate ultrafast recovery?
No-the "U" denotes the SBR® Super Barrier Rectifier family, not ultrafast recovery. The device uses a patented barrier structure-not a PN junction-so it exhibits soft, low-Qrr switching behavior distinct from ultrafast or fast recovery diodes. Recovery characteristics are inherent to the SBR architecture, not a separate speed grade.
SBR40U100CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SBR®
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Super Barrier
- Voltage - DC Reverse (Vr) (Max):
- 100 V
- Current - Average Rectified (Io) (per Diode):
- 40A
- Voltage - Forward (Vf) (Max) @ If:
- 720 mV @ 20 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 50 µA @ 100 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBR40U100CT FAQ
1.How can I place an order for SBR40U100CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR40U100CT 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 SBR40U100CT reliable?
The price and inventory of SBR40U100CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR40U100CT is usually 5 days.
3.What payment methods are accepted for SBR40U100CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR40U100CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR40U100CT?
SBR40U100CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR40U100CT 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 SBR40U100CT?
For technical support, including SBR40U100CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR40U100CT requirements.
6.How does Aetrix verify that SBR40U100CT is sourced from the original manufacturer or authorized distributors?
All SBR40U100CT 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 SBR40U100CT meets industry standards.
7.What is the process for return or replacement of SBR40U100CT?
All SBR40U100CT units undergo pre-shipment inspection (PSI). If there is an issue with SBR40U100CT, 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 SBR40U100CT part is unused and in its original packaging.
Return procedure for SBR40U100CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR40U100CT Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
-
BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
-
MMBD1503-TP
Micro Commercial Co
-
BAV99WT1G
onsemi
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