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Diodes Incorporated SBG3040CT-T-F
- Part No.:
- SBG3040CT-T-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG3040CT-T-F.pdf
- Description:
- DIODE ARRAY SCHOT 40V 15A TO-263
- Quantity:
- Payment:
- Shipping:
Inventory:2,523
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Product details
Overview
SBG3040CT-T-F from Diodes Incorporated is a 40V, 30A surface-mount Schottky barrier rectifier in TO-263 (D2PAK) package, featuring 0.55V forward voltage at 15A/25°C, 250A non-repetitive surge capability, and guard ring die construction for transient protection-used in low-voltage DC-DC output stages and polarity protection circuits.
For engineers reviewing the SBG3040CT-T-F datasheet, SBG3040CT-T-F pinout, SBG3040CT-T-F application, or SBG3040CT-T-F equivalent, key selection criteria include forward voltage drop at rated current, thermal resistance (1.5°C/W junction-to-case), peak reverse voltage margin, surge robustness (250A @ 8.3ms), and RoHS-compliant tin-plated terminals for lead-free reflow compatibility.
Technical Context
This dual-common-cathode Schottky rectifier integrates two independent 30A-rated diode elements in a single TO-263 thermally optimized package. Its guard ring structure enhances ruggedness against voltage transients, while low VF and high IFSM support high-efficiency switching power supplies operating up to 125°C case temperature.
Designed for unidirectional conduction in high-frequency rectification, it delivers 420pF typical junction capacitance per element at 4V reverse bias and 1MHz, enabling fast recovery with minimal switching loss-critical for synchronous rectifier replacement and freewheeling paths in SMPS topologies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage; defines safe DC or peak AC reverse bias limit before breakdown. |
| IO | 30 A - Average rectified current at TC = 100°C; sets continuous conduction capability with heatsink mounting. |
| VFM | 0.55 V @ 15A, 25°C - Forward voltage per element; directly determines conduction loss and thermal load in high-current paths. |
| IFSM | 250 A @ 8.3ms - Non-repetitive surge rating; supports inrush current handling during startup or fault conditions. |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance; enables accurate heatsink sizing when mounted on copper plane or external heatsink. |
| CT | 420 pF @ 4V, 1MHz - Total junction capacitance per element; impacts high-frequency switching noise and EMI filter design. |
Pinout & Package
TO-263 (D2PAK) package with exposed metal tab (Pin 2 & 4) serving as common cathode connection and primary thermal path; molded plastic body (UL 94V-0), 1.7g mass, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first diode element; connects to input rail or switch node in half-bridge/freewheeling configuration. |
| Pin 2 & 4 | Common Cathode | Shared cathode node for both diodes; electrically and thermally tied to exposed tab-must be soldered to PCB copper pour for thermal management. |
| Pin 3 | Anode 2 | Input terminal for second diode element; enables dual-output or redundant rectification in compact layout. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances transient voltage immunity and prevents edge breakdown-critical for automotive load dump and industrial surge environments. |
| Low forward voltage (0.55V) | Reduces conduction loss by >30% vs. standard silicon rectifiers at 15A, improving efficiency in 5–12V output rails. |
| 250A surge rating | Withstands short-duration overcurrent events without degradation-supports reliable operation in motor drive flyback and capacitor-charging circuits. |
| RoHS-compliant tin finish | Enables lead-free reflow soldering (JEDEC J-STD-020) without intermetallic reliability concerns or wetting issues. |
Applications
| DC-DC Converter Output Rectification | Polarity Protection Circuit |
|---|---|
Use Scenario: High-current 5V/12V output stage of isolated flyback or forward converter in telecom power supplies. IC Role / Device Role / Timing Role: Primary unidirectional rectifier converting transformer secondary AC to regulated DC; replaces dual discrete Schottkys with shared cathode. Use Value: 0.55V VF minimizes power loss at 30A load, reducing heatsink requirements and improving system efficiency above 92%. | Use Scenario: Reverse-voltage protection at main power input of industrial PLC modules and embedded controllers. IC Role / Device Role / Timing Role: Series-connected anode-to-input, cathode-to-load; blocks reverse polarity while conducting forward current with minimal drop. Use Value: Low VF ensures <170mW dissipation at 30A, avoiding thermal shutdown during sustained operation. |
| Freewheeling Diode in Motor Drives | OR-ing Diode in Redundant Power Supplies |
Use Scenario: Freewheeling path across brushed DC motor windings or H-bridge inverter legs. IC Role / Device Role / Timing Role: Provides low-loss current recirculation path during PWM off-time; handles high di/dt and 250A surge peaks. Use Value: 1.5°C/W RθJC allows direct thermal coupling to PCB ground plane, maintaining TJ < 125°C under 100% duty cycle. | Use Scenario: Back-to-back OR-ing configuration in dual 24V input power supplies for network switches. IC Role / Device Role / Timing Role: Dual-anode topology enables independent control of two input rails sharing one output bus via common cathode. Use Value: Matched VF between elements ensures balanced current sharing and eliminates cross-conduction risk. |
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-30CPH04-M3 | Same 40V VRRM, 30A IO, but TO-247 package; higher RθJC (1.8°C/W); 0.57V VF @ 15A. | Requires larger footprint and mechanical mounting; less suitable for dense SMT layouts. | Prefer when higher surge margin or through-hole assembly is required. |
| ON Semiconductor MBR3045CT | 45V VRRM, identical TO-263 package and pinout; 0.62V VF @ 15A; 200A IFSM. | Higher voltage rating trades off slightly higher conduction loss; lower surge rating reduces fault tolerance. | Choose when system requires 45V blocking margin and can accept +13% VF penalty. |
Compared with VS-30CPH04-M3 and MBR3045CT, SBG3040CT-T-F offers optimal balance of low VF, high surge rating, and compact SMT packaging-making it preferred for space-constrained, high-efficiency 40V-class power conversion where thermal performance and transient robustness are critical.
Availability
SBG3040CT-T-F is available at Aetrix Electronics and suitable for DC-DC converters, motor drive freewheeling circuits, and polarity protection systems requiring stable component supply, consistent parametric performance, and RoHS-compliant manufacturing.
Supply support for SBG3040CT-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.
SBG3040CT-T-F belongs to the SBG30xxCT series of high-current Schottky rectifiers designed specifically for high-efficiency, high-surge industrial and computing power supplies operating up to 125°C case temperature.
FAQ
What is the maximum allowable case temperature for continuous operation?
The SBG3040CT-T-F is rated for continuous operation at up to 100°C case temperature (TC) delivering its full 30A average current. Operation beyond this requires derating per Figure 1 in DS30025; maximum junction temperature remains 125°C, and thermal design must ensure RθJC × PLOSS + TC ≤ 125°C.
Is SBG3040CT-T-F suitable for synchronous rectification replacement?
No-it is a passive Schottky rectifier, not a MOSFET-based synchronous rectifier controller or driver. However, its low 0.55V VF makes it a high-performance alternative to standard silicon diodes in non-controlled freewheeling or output rectification where gate drive complexity must be avoided.
How does the guard ring construction improve reliability?
The guard ring die structure distributes electric field stress away from the active junction periphery, suppressing premature avalanche and surface leakage during voltage transients. This extends operational life under repeated 250A surge events and improves long-term stability in automotive and industrial environments with load dump or inductive kick.
Can Pin 2 and Pin 4 be used independently for thermal and electrical isolation?
No-Pins 2 and 4 are internally bonded to the same metal tab and form a single common cathode node. They must be connected together electrically and thermally on the PCB; splitting them compromises both current rating and thermal performance, and violates the device's mechanical and electrical design.
SBG3040CT-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):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 550 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 40 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263
SBG3040CT-T-F FAQ
1.How can I place an order for SBG3040CT-T-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG3040CT-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 SBG3040CT-T-F reliable?
The price and inventory of SBG3040CT-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 SBG3040CT-T-F is usually 5 days.
3.What payment methods are accepted for SBG3040CT-T-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG3040CT-T-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG3040CT-T-F?
SBG3040CT-T-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG3040CT-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 SBG3040CT-T-F?
For technical support, including SBG3040CT-T-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG3040CT-T-F requirements.
6.How does Aetrix verify that SBG3040CT-T-F is sourced from the original manufacturer or authorized distributors?
All SBG3040CT-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 SBG3040CT-T-F meets industry standards.
7.What is the process for return or replacement of SBG3040CT-T-F?
All SBG3040CT-T-F units undergo pre-shipment inspection (PSI). If there is an issue with SBG3040CT-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 SBG3040CT-T-F part is unused and in its original packaging.
Return procedure for SBG3040CT-T-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG3040CT-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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