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Diodes Incorporated SBR30A40CT-G
- Part No.:
- SBR30A40CT-G
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBR30A40CT-G.pdf
- Description:
- DIODE ARRAY SBR 40V 30A TO-220-3
- Quantity:
- Payment:
- Shipping:
Inventory:7,521
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Product details
Overview
SBR30A40CT-G from Diodes Incorporated is a 30A dual common-cathode super barrier rectifier rated for 40V peak reverse voltage, featuring low forward voltage drop (0.45V typ at 15A/125°C), soft fast switching, and TO-220AB package with isolated heatsink mounting capability. It serves as a high-efficiency output rectifier in AC/DC power supplies and DC/DC converters for industrial and telecom systems.
For engineers reviewing the SBR30A40CT-G datasheet, SBR30A40CT-G pinout, SBR30A40CT-G application, or SBR30A40CT-G equivalent, key selection criteria include forward voltage stability over temperature, surge current rating (250A IFSM), thermal resistance (2°C/W junction-to-case), and RoHS-compliant lead-free construction.
Technical Context
This dual-element rectifier integrates two independent super barrier diodes sharing a common cathode terminal, enabling synchronous half-wave or center-tapped full-wave rectification. Its patented SBR technology delivers lower VF than Schottky diodes while maintaining higher thermal stability and reduced leakage at elevated temperatures.
The device operates across –65°C to +150°C junction temperature range and supports derated average current up to 30A at TC = 110°C. Isolation voltage is not applicable for TO-220AB (only specified for ITO-220AB variant), confirming its non-isolated heatsink interface design.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 40 V - Maximum blocking voltage before avalanche conduction; defines safe operating limit in bridge or flyback secondary circuits. |
| Avg. Forward Current | 30 A @ TC = 110°C - Continuous DC output current per element with heatsink; enables high-power 12V/24V SMPS designs. |
| Forward Voltage Drop | 0.45 V typ @ IF = 15A, TJ = 125°C - Low conduction loss improves efficiency and reduces thermal stress in high-current paths. |
| Surge Current | 250 A @ 8.3ms half-sine - Withstands inrush and transient overload without failure; critical for input-stage rectification. |
| Junction-to-Case Rθ | 2 °C/W - Enables direct mechanical mounting to heatsink; supports compact thermal design with predictable temperature rise. |
| Leakage Current | 100 µA max @ VR = 40V, TJ = 125°C - Low reverse conduction preserves efficiency in standby and light-load conditions. |
Pinout & Package
Package: TO-220AB - Standard 3-lead plastic power package with metal tab (cathode-connected) for direct heatsink mounting; non-isolated, UL 94V-0 rated molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Left) | Anode 1 | Input terminal for first rectifying element; connects to transformer secondary or switching node. |
| Pin 2 (Center) | Cathode (Common) | Shared output node for both diodes; electrically connected to metal tab and must be heatsinked. |
| Pin 3 (Right) | Anode 2 | Input terminal for second rectifying element; used in center-tapped or dual-output configurations. |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier Technology | Combines Schottky-like low VF with PN-junction thermal stability-enables operation up to +150°C without runaway. |
| Soft Fast Switching | Minimizes EMI generation during turn-off; eliminates need for snubbers in medium-frequency (<100 kHz) SMPS designs. |
| Lead-Free & RoHS Compliant | Matte tin finish on copper leadframe meets MIL-STD-202 solderability requirements and EU Directive 2002/95/EC. |
| High Surge Robustness | 250A non-repetitive surge rating allows reliable operation under line transients and capacitor charging events. |
Applications
| Server Power Supply | Industrial DC/DC Converter |
|---|---|
Use Scenario: High-density 48V-to-12V intermediate bus converter in rack-mounted servers. IC Role / Device Role / Timing Role: Output synchronous rectifier replacing MOSFETs in LLC resonant topology. Use Value: Reduces conduction loss by 30% vs. standard Schottky, lowering heatsink size and improving full-load efficiency to >94%. |
Use Scenario: 24V auxiliary supply in PLC backplane with wide ambient temperature range. IC Role / Device Role / Timing Role: Dual-anode configuration enables redundant or split-rail rectification from center-tapped winding. Use Value: Maintains stable VF below 0.48V at 125°C, eliminating thermal runaway risk in unventilated enclosures. |
| Telecom Rectifier Module | EV Charging Auxiliary Supply |
Use Scenario: -48V telecom rectifier module requiring high reliability and low maintenance. IC Role / Device Role / Timing Role: Primary output rectifier in phase-shifted full-bridge converter. Use Value: 250A surge rating withstands repeated hot-plug events; 100µA max IR at 125°C ensures low standby loss. |
Use Scenario: 12V control power supply in onboard charger (OBC) for battery management system. IC Role / Device Role / Timing Role: Secondary-side rectifier handling intermittent high-current pulses during CAN communication bursts. Use Value: Soft recovery prevents voltage spikes that could disrupt isolated CAN transceivers or microcontroller reset behavior. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current super barrier rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-30CPH04-M3 | Same 40V/30A rating but uses Trench-Schottky architecture; VF = 0.47V @ 15A/125°C; RθJC = 2.5°C/W. | Higher leakage (200µA @ 125°C); less suitable for high-temp sealed environments. | Prefer when board-level EMI filtering is already robust and thermal margin exceeds 5°C/W. |
| ON Semiconductor MUR3040PT | Ultrafast recovery PN diode; VF = 0.95V @ 15A/25°C; IFSM = 200A; RθJC = 2.2°C/W. | Higher conduction loss increases heat dissipation; requires larger heatsink for same output power. | Choose only if cost sensitivity outweighs efficiency targets and surge immunity is secondary. |
Compared with VS-30CPH04-M3 and MUR3040PT, SBR30A40CT-G delivers superior thermal stability and lower conduction loss at elevated temperature, making it optimal for thermally constrained, high-reliability power conversion where efficiency and long-term parametric drift matter.
Availability
SBR30A40CT-G is available at Aetrix Electronics and suitable for server power supplies, industrial DC/DC converters, telecom rectifier modules, and EV charging auxiliary supplies requiring stable component supply and long-lifecycle support.
Supply support for SBR30A40CT-G 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-efficiency, high-reliability power conversion in industrial, computing, and communications infrastructure where low VF, thermal robustness, and soft switching are critical.
FAQ
Is SBR30A40CT-G pin-compatible with standard TO-220AB dual-diode rectifiers?
Yes - SBR30A40CT-G uses industry-standard TO-220AB footprint and pinout (Anode1–Cathode–Anode2), matching legacy parts like MUR3040PT and SB3040CT. The metal tab is internally connected to the common cathode, enabling direct heatsink mounting without insulation.
What is the maximum continuous case temperature for reliable operation?
The device supports continuous operation at TC = 110°C with IO = 30A per element, as defined in the Absolute Maximum Ratings table. Derating begins above this point per Figure 1; at TC = 130°C, maximum average current drops to ~22A.
Does SBR30A40CT-G require a thermal pad or insulator when mounted to a heatsink?
No - the TO-220AB package has a non-isolated metal tab tied to the common cathode. Electrical isolation must be achieved via external insulating hardware (e.g., mica washer + shoulder washer) if the heatsink is grounded or at a different potential.
How does the soft switching characteristic affect EMI in high-frequency converters?
Soft recovery reduces di/dt during turn-off, suppressing high-frequency ringing and conducted EMI peaks above 30 MHz. This allows smaller input filters and simplifies compliance with CISPR-32 Class B limits in compact power modules.
SBR30A40CT-G 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):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 30A
- Voltage - Forward (Vf) (Max) @ If:
- 500 mV @ 15 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBR30A40CT-G FAQ
1.How can I place an order for SBR30A40CT-G through Aetrix?
Please submit a Request for Quotation (RFQ) for SBR30A40CT-G 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 SBR30A40CT-G reliable?
The price and inventory of SBR30A40CT-G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBR30A40CT-G is usually 5 days.
3.What payment methods are accepted for SBR30A40CT-G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBR30A40CT-G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBR30A40CT-G?
SBR30A40CT-G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBR30A40CT-G 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 SBR30A40CT-G?
For technical support, including SBR30A40CT-G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBR30A40CT-G requirements.
6.How does Aetrix verify that SBR30A40CT-G is sourced from the original manufacturer or authorized distributors?
All SBR30A40CT-G 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 SBR30A40CT-G meets industry standards.
7.What is the process for return or replacement of SBR30A40CT-G?
All SBR30A40CT-G units undergo pre-shipment inspection (PSI). If there is an issue with SBR30A40CT-G, 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 SBR30A40CT-G part is unused and in its original packaging.
Return procedure for SBR30A40CT-G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBR30A40CT-G 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
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