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Diodes Incorporated SBG1040CT-T-F
- Part No.:
- SBG1040CT-T-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG1040CT-T-F.pdf
- Description:
- DIODE ARR SCHOTT 40V 10A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,291
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Product details
Overview
SBG1040CT-T-F from Diodes Incorporated is a 40 V, 10 A dual common-cathode surface-mount Schottky barrier rectifier in D²PAK (TO-263) package, featuring 0.55 V forward voltage at 5.0 A per element, 125 A non-repetitive surge capability, and guard ring die construction for transient protection-used in low-voltage DC/DC converter outputs and reverse polarity protection circuits.
For engineers reviewing the SBG1040CT-T-F datasheet, SBG1040CT-T-F pinout, SBG1040CT-T-F application, or SBG1040CT-T-F equivalent, key selection criteria include its 40 V blocking rating, dual common-cathode configuration, thermal resistance of 3.0 °C/W (junction-to-case), RoHS-compliant tin finish, and suitability for high-frequency freewheeling in SMPS designs.
Technical Context
This dual Schottky rectifier integrates two independent anode elements sharing a single cathode terminal, enabling synchronous rectification or dual-path output rectification in compact power supplies. Its guard ring structure enhances ruggedness against voltage transients without external clamping components.
Designed for operation up to 125 °C junction temperature, it delivers stable forward conduction with minimal self-heating under 10 A average load when mounted on a heatsink-verified by derating curves showing full-rated current at TC = 95 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse voltage per element; defines safe DC blocking margin in 24 V or 36 V bus applications. |
| IO (TC = 95°C) | 10 A - Average rectified current per element at case temperature 95 °C; enables continuous 10 A output in thermally managed converters. |
| VFM @ IF = 5.0 A | 0.55 V - Low forward drop per element reduces conduction loss by ~30% vs. standard PN diodes, improving efficiency in <100 kHz SMPS. |
| IFSM (8.3 ms) | 125 A - Peak surge rating supports inrush current handling during cold start or output capacitor charging without failure. |
| RθJC | 3.0 °C/W - Junction-to-case thermal resistance confirms effective heat transfer to PCB copper or external heatsink in D²PAK footprint. |
| CT @ 1 MHz, 4 V | 275 pF - Low junction capacitance minimizes switching losses and EMI in high-frequency freewheeling paths. |
Pinout & Package
Package: D²PAK (TO-263), surface-mount, single-piece molded plastic case with UL 94V-0 rating, 1.7 g mass, 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 Schottky element; connects to switching node or input rail in dual-output or redundancy configurations. |
| Pin 2 & Pin 4 | Cathode (common) | Shared cathode node for both elements; serves as main output return path-requires low-impedance PCB copper pour for thermal and current handling. |
| Pin 3 | Anode 2 | Input terminal for second Schottky element; enables independent control or parallel operation with Anode 1 in split-rail or dual-phase topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Provides intrinsic transient voltage suppression without external TVS, reducing BOM count in automotive and industrial power rails. |
| Low VFM (0.55 V @ 5 A) | Reduces power dissipation to ≤2.75 W per element at 5 A, lowering thermal design burden versus alternatives with >0.7 V drop. |
| Dual common-cathode topology | Enables compact dual-output rectification or redundant current paths in telecom and server PSUs without discrete cathode routing. |
| 125 A IFSM rating | Withstands 125 A surge for 8.3 ms, supporting reliable operation during hot-swap events or short-circuit recovery in 48 V systems. |
Applications
| DC/DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
|
Use Scenario: Secondary-side rectification in isolated 24 V–48 V input DC/DC modules for industrial PLCs and motor drives. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss, high-efficiency output conduction with shared cathode simplifying layout. Use Value: 0.55 V forward drop cuts conduction loss by ≥1.2 W per element vs. comparable 0.75 V diodes at 5 A, improving full-load efficiency by 0.8–1.2%. |
Use Scenario: Input protection circuit for 12 V battery-powered instrumentation exposed to accidental reverse connection. IC Role / Device Role / Timing Role: Common-cathode dual diode configured as OR-ing device with one anode tied to battery, the other to backup supply. Use Value: Guard ring structure withstands 40 V reverse transients without breakdown, eliminating need for separate TVS in cost-sensitive portable designs. |
| High-Frequency Freewheeling | Low-Voltage AC/DC Adapter Output |
|
Use Scenario: Freewheeling path in synchronous buck converters operating at 200–500 kHz for LED drivers and USB PD adapters. IC Role / Device Role / Timing Role: Fast-recovery Schottky element conducting during low-side switch off-time to maintain current continuity. Use Value: 275 pF junction capacitance limits displacement current and EMI generation during 500 kHz switching, easing EMC filter design. |
Use Scenario: Output rectification in compact 5 V/3 A wall adapters using flyback topology with tight thermal constraints. IC Role / Device Role / Timing Role: Dual-element rectifier delivering 6 A total output via paralleled anodes while sharing single cathode return. Use Value: D²PAK package with 3.0 °C/W RθJC allows 10 A operation at TC = 95 °C on 2 oz copper, enabling smaller heatsinks than TO-220 alternatives. |
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-10BQ040-M3/45 | Same 40 V VRRM, 10 A IO, but TO-252 (DPAK) package; RθJC = 4.5 °C/W; no guard ring. | Limited surge robustness in unclamped inductive loads; requires external TVS for transient immunity. | Prefer when board space is constrained and thermal margin exceeds 15 °C/W. |
| ON Semiconductor MBR1045CT | 45 V VRRM, identical D²PAK footprint, but VFM = 0.72 V @ 5 A; IFSM = 100 A. | Higher forward loss increases conduction heating; lower surge rating reduces reliability in high-inrush applications. | Select only if 45 V blocking margin is mandatory and efficiency loss is acceptable. |
Compared with VS-10BQ040-M3/45 and MBR1045CT, SBG1040CT-T-F uniquely combines 40 V rating, 0.55 V forward drop, 125 A surge capability, and integrated guard ring-making it optimal for thermally demanding, transient-prone 24–48 V industrial power stages where efficiency and ruggedness are jointly critical.
Availability
SBG1040CT-T-F is available at Aetrix Electronics and suitable for industrial power supplies, telecom DC/DC modules, and battery management systems requiring stable component supply and long-term manufacturability assurance.
Supply support for SBG1040CT-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-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
SBG1040CT-T-F belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-ruggedness secondary-side rectification in compact, thermally constrained power converters.
FAQ
Is SBG1040CT-T-F pin-compatible with SBG1035CT-T-F or SBG1045CT-T-F?
Yes-SBG1040CT-T-F shares identical D²PAK package, pinout, and dual common-cathode configuration with SBG1035CT-T-F and SBG1045CT-T-F. Only the peak repetitive reverse voltage differs (35 V, 40 V, 45 V respectively); all three use the same mechanical footprint and thermal interface.
What is the maximum recommended PCB copper area for thermal performance?
Diodes recommends ≥400 mm² of 2 oz copper connected directly to the cathode pad (Pins 2 & 4) for optimal thermal performance. This achieves near-rated 10 A current handling at TC = 95 °C, as validated in the forward current derating curve (Figure 1).
Does SBG1040CT-T-F require a heatsink in typical 10 A applications?
No discrete heatsink is required if the PCB provides ≥400 mm² of 2 oz copper tied to the cathode pad. The 3.0 °C/W RθJC assumes direct thermal coupling to that copper area; adding a heatsink further lowers junction temperature but is not necessary for nominal operation.
Why is SBG1040CT-T-F marked "NOT RECOMMENDED FOR NEW DESIGN"?
This designation reflects Diodes' internal roadmap-not functional obsolescence. New designs should consider newer-generation Schottky rectifiers like the APx1040 series with improved VFM and lower RθJC. SBG1040CT-T-F remains fully supported, stocked, and qualified for legacy and maintenance programs.
SBG1040CT-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):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 40 V
- Operating Temperature - Junction:
- -65°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SBG1040CT-T-F FAQ
1.How can I place an order for SBG1040CT-T-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG1040CT-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 SBG1040CT-T-F reliable?
The price and inventory of SBG1040CT-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 SBG1040CT-T-F is usually 5 days.
3.What payment methods are accepted for SBG1040CT-T-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG1040CT-T-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG1040CT-T-F?
SBG1040CT-T-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG1040CT-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 SBG1040CT-T-F?
For technical support, including SBG1040CT-T-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG1040CT-T-F requirements.
6.How does Aetrix verify that SBG1040CT-T-F is sourced from the original manufacturer or authorized distributors?
All SBG1040CT-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 SBG1040CT-T-F meets industry standards.
7.What is the process for return or replacement of SBG1040CT-T-F?
All SBG1040CT-T-F units undergo pre-shipment inspection (PSI). If there is an issue with SBG1040CT-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 SBG1040CT-T-F part is unused and in its original packaging.
Return procedure for SBG1040CT-T-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG1040CT-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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