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Diodes Incorporated SBG2040CT-T-F
- Part No.:
- SBG2040CT-T-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG2040CT-T-F.pdf
- Description:
- DIODE ARR SCHOTT 40V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,774
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Product details
Overview
SBG2040CT-T-F from Diodes Incorporated is a 40 V, 20 A dual common-cathode surface-mount Schottky barrier rectifier in D²PAK (TO-263) package, featuring 0.55 V forward voltage at 10 A per element, 225 A non-repetitive surge capability, and 2.0 °C/W junction-to-case thermal resistance-designed for low-voltage, high-frequency DC/DC converters and polarity protection circuits.
For engineers reviewing the SBG2040CT-T-F datasheet, SBG2040CT-T-F pinout, SBG2040CT-T-F application, or SBG2040CT-T-F equivalent, key selection criteria include its 40 V blocking rating, dual common-cathode configuration, thermal performance under 105°C case temperature, RoHS-compliant tin finish, and compatibility with automated SMT assembly on heatsink-mounted PCBs.
Technical Context
This dual-element Schottky rectifier integrates two independent anode terminals (Pins 1 & 3) sharing a common cathode (Pins 2 & 4), enabling synchronous rectification or dual-output configurations. Its guard ring die construction provides transient overvoltage immunity without external clamping components.
The device operates across –65°C to +150°C junction temperature range, with typical total capacitance of 650 pF at 1 MHz and 4 V reverse bias-critical for minimizing switching losses in high-frequency (>100 kHz) power stages where diode recovery time must be near-zero.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage per element; defines safe DC blocking margin in 24–36 V input systems. |
| IO (TC = 105°C) | 20 A - Average rectified current per element at 105°C case temperature; enables compact heatsink design in space-constrained converters. |
| VFM @ IF = 10 A | 0.55 V - Forward voltage drop per element; reduces conduction loss to ≤5.5 W per element at full load, improving efficiency >92% in 12 V output designs. |
| IFSM (8.3 ms) | 225 A - Non-repetitive surge current rating; withstands inrush and short-circuit transients without bond wire fusing. |
| RθJC | 2.0 °C/W - Junction-to-case thermal resistance; allows direct mounting to copper pour or heatsink for reliable thermal management. |
| CT @ 1 MHz | 650 pF - Total capacitance per element; limits displacement current and EMI generation during fast voltage transitions. |
Pinout & Package
Package: D²PAK (TO-263), molded plastic case with UL 94V-0 flammability rating, moisture sensitivity level 1, and tin-plated terminals solderable per MIL-STD-202 Method 208.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first rectifying element; electrically isolated from Pin 3 but shares cathode path. |
| Pin 2 & Pin 4 | Common Cathode | Shared cathode connection for both elements; must be routed to lowest-impedance ground/power return path. |
| Pin 3 | Anode 2 | Input terminal for second rectifying element; enables dual-input or interleaved operation. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Provides inherent transient voltage suppression (TVS-like behavior) without added components-reduces layout area and BOM count. |
| Low VFM (0.55 V @ 10 A) | Minimizes conduction loss in high-current paths, enabling higher efficiency in 12 V/24 V automotive and industrial DC/DC stages. |
| Dual common-cathode topology | Supports independent control of two power rails or parallel operation for current sharing-ideal for redundant or multi-output supplies. |
| 225 A IFSM rating | Survives cold-start surges and fault currents in battery-fed systems without derating or external fusing. |
Applications
| Automotive DC/DC Converters | Industrial Power Supplies |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V step-down conversion in engine control units and infotainment systems with strict thermal and EMI constraints. IC Role / Device Role / Timing Role: Primary output rectifier replacing conventional silicon diodes to reduce heat generation and improve light-load efficiency. Use Value: 0.55 V forward drop cuts conduction loss by ~40% vs. standard FRD, lowering heatsink requirements and enabling smaller enclosures. | Use Scenario: Dual-output 24 V/12 V regulated supplies for PLC I/O modules requiring high reliability and surge tolerance. IC Role / Device Role / Timing Role: Common-cathode dual rectifier enabling independent regulation of two outputs using single transformer secondary winding. Use Value: Shared cathode simplifies PCB routing and improves current balance between outputs, reducing differential noise coupling. |
| Telecom Rectification | Polarity Protection Circuits |
Use Scenario: -48 V telecom rectifier stage feeding distributed power architecture with high peak current demands. IC Role / Device Role / Timing Role: High-surge-capable output rectifier handling 225 A transients during hot-swap events and backup battery switchover. Use Value: 225 A IFSM rating eliminates need for external surge limiters, reducing component count and failure points. | Use Scenario: Reverse-polarity protection at main power input of medical diagnostic equipment operating from external 24 V adapters. IC Role / Device Role / Timing Role: Low-VF series rectifier placed before DC/DC controller to block reverse current while minimizing voltage drop. Use Value: 0.55 V forward drop preserves ≥97% of input voltage margin, critical for brownout-sensitive analog front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-20CPH04-M3 | Same 40 V VRRM, 20 A IO, but TO-220AC package with higher RθJC (3.0 °C/W); no common-cathode dual configuration. | Requires separate cathode routing and larger heatsink; unsuitable for dual-output or space-constrained SMT designs. | Select only when through-hole mounting and discrete cathode control are required. |
| ON Semiconductor MBR2045CT | 45 V VRRM, identical D²PAK package and pinout, but 0.62 V VFM @ 10 A and 200 A IFSM. | Higher blocking voltage suits 36–42 V systems; higher VFM increases conduction loss by ~12.7% at full load. | Choose when system requires >40 V margin and can accept slightly lower efficiency. |
Compared with VS-20CPH04-M3, SBG2040CT-T-F offers superior thermal performance and integrated dual topology; versus MBR2045CT, it delivers lower forward loss at the cost of 5 V reduced blocking voltage-making it optimal for tightly regulated 24–36 V input applications.
Availability
SBG2040CT-T-F is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial power supplies, telecom rectification, and polarity protection circuits requiring stable component supply and long-term manufacturability.
Supply support for SBG2040CT-T-F 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-efficiency power management, signal integrity, and protection solutions for industrial, computing, and automotive markets.
The SBG20xxCT series targets high-current, low-loss rectification in surface-mount power supplies-designed specifically for SMT-compatible, thermally efficient replacement of legacy through-hole Schottky and fast recovery diodes.
FAQ
Is SBG2040CT-T-F suitable for synchronous rectification topologies?
No-SBG2040CT-T-F is a passive Schottky rectifier, not a MOSFET-based synchronous rectifier controller or driver. It functions as a self-commutating diode with zero gate drive requirement, making it appropriate for conventional flyback, forward, and LLC secondary-side rectification where simplicity and reliability outweigh active control benefits.
What is the maximum recommended PCB copper area for thermal relief when mounting SBG2040CT-T-F?
Diodes Incorporated recommends ≥400 mm² of 2 oz copper on the cathode pad (Pins 2 & 4) connected to an internal or external heatsink. This achieves the rated 20 A current capacity at TC = 105°C; reducing copper area below 250 mm² requires derating to ≤14 A per element per Figure 1 in DS30091 Rev. 6.
Does SBG2040CT-T-F have a qualified AEC-Q101 stress test report for automotive use?
No-SBG2040CT-T-F is not AEC-Q101 qualified. While its –65°C to +150°C operating range meets automotive ambient requirements, Diodes Incorporated classifies it as "NOT RECOMMENDED FOR NEW DESIGN" per the datasheet, and no AEC-Q101 qualification data is published for this part number.
Can Pins 2 and 4 be used independently as separate cathodes?
No-Pins 2 and 4 are internally bonded to the same cathode metallization and must be treated as a single electrical node. Separating them violates the D²PAK mechanical design and risks thermal imbalance, solder joint fatigue, or current crowding; both pins must be connected to the same low-impedance return path.
SBG2040CT-T-F Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 40 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SBG2040CT-T-F FAQ
1.How can I place an order for SBG2040CT-T-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG2040CT-T-F 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 SBG2040CT-T-F reliable?
The price and inventory of SBG2040CT-T-F are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBG2040CT-T-F is usually 5 days.
3.What payment methods are accepted for SBG2040CT-T-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG2040CT-T-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG2040CT-T-F?
SBG2040CT-T-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG2040CT-T-F 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 SBG2040CT-T-F?
For technical support, including SBG2040CT-T-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG2040CT-T-F requirements.
6.How does Aetrix verify that SBG2040CT-T-F is sourced from the original manufacturer or authorized distributors?
All SBG2040CT-T-F 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 SBG2040CT-T-F meets industry standards.
7.What is the process for return or replacement of SBG2040CT-T-F?
All SBG2040CT-T-F units undergo pre-shipment inspection (PSI). If there is an issue with SBG2040CT-T-F, 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 SBG2040CT-T-F part is unused and in its original packaging.
Return procedure for SBG2040CT-T-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG2040CT-T-F 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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