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Diodes Incorporated SBG2040CT
- Part No.:
- SBG2040CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG2040CT.pdf
- Description:
- DIODE ARR SCHOTT 40V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,736
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Product details
Overview
SBG2040CT 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 datasheet, SBG2040CT pinout, SBG2040CT application, or SBG2040CT 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 heatsinked PCBs.
Technical Context
This dual-element Schottky rectifier integrates two independent anode terminals sharing a single cathode terminal, enabling synchronous rectification or dual-output DC path management. 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 and delivers stable 650 pF typical junction capacitance at 1 MHz and 4 V reverse bias-critical for minimizing switching losses in high-frequency (>100 kHz) SMPS topologies.
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 bus applications. |
| IO (TC = 105°C) | 20 A - Average rectified current per element at 105°C case temperature; enables compact heatsink design in power supplies. |
| VFM @ IF = 10 A | 0.55 V - Forward voltage drop per element; reduces conduction loss to ≤5.5 W per diode at full rated current. |
| IFSM (8.3 ms) | 225 A - Non-repetitive surge current rating; supports inrush current handling in motor drives and UPS systems. |
| RθJC | 2.0 °C/W - Junction-to-case thermal resistance; allows direct mounting to copper pour or heatsink for efficient thermal transfer. |
| CT @ 1 MHz, 4 V | 650 pF - Total junction capacitance per element; limits capacitive switching loss and EMI generation in >100 kHz converters. |
Pinout & Package
Package: D²PAK (TO-263), molded plastic case with UL 94V-0 flammability 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 rectifying element; connects to AC or switching node in half-bridge or dual-output topology. |
| Pin 2 & 4 | Cathode (common) | Shared output node for both elements; requires low-inductance PCB trace routing to minimize voltage overshoot during commutation. |
| Pin 3 | Anode 2 | Input terminal for second rectifying element; enables independent control of two DC paths or interleaved operation. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Provides intrinsic transient voltage suppression (TVS-like behavior) without external components-reduces BOM count in industrial power modules. |
| Low forward voltage (0.55 V @ 10 A) | Minimizes conduction loss by ≥30% vs. standard silicon rectifiers, improving efficiency in 12–48 V DC/DC stages. |
| 225 A surge rating | Withstands motor startup surges and capacitor charging transients in battery-powered inverters without derating. |
| Dual common-cathode configuration | Enables space-efficient dual-output rectification or active OR-ing in redundant power systems with single thermal path. |
Applications
| DC/DC Converter Secondary Side | Automotive Body Control Module |
|---|---|
Use Scenario: High-frequency (200–500 kHz) isolated flyback or forward converter secondary rectification in telecom power supplies. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss synchronous rectification for two independent 5–12 V outputs. Use Value: 0.55 V VF reduces conduction loss by 1.5 W per channel vs. Si diodes, lowering thermal stress on 2-layer PCBs. | Use Scenario: Polarity protection and load dump suppression in 12 V automotive body control units (BCUs). IC Role / Device Role / Timing Role: Common-cathode dual diode preventing reverse battery connection while clamping 120 V load dump spikes via guard ring. Use Value: Eliminates need for separate TVS diode and series MOSFET, reducing footprint by 40% in compact BCU designs. |
| Solar Microinverter DC Link | Industrial Motor Drive Freewheeling |
Use Scenario: DC link rectification in string-level solar microinverters operating at 40–60 V input with 20 kHz PWM switching. IC Role / Device Role / Timing Role: Dual-anode Schottky managing bidirectional energy flow between PV panel and H-bridge inverter stage. Use Value: 650 pF capacitance ensures minimal switching loss at 20 kHz, maintaining >96% peak efficiency under partial shading. | Use Scenario: Freewheeling path for IGBTs in 3-phase BLDC motor drives with 10–20 A phase current. IC Role / Device Role / Timing Role: Dual-element rectifier providing parallel freewheeling paths for two phases, sharing thermal mass via common cathode. Use Value: 2.0 °C/W RθJC enables direct heatsink mounting-reducing junction temperature rise by 18°C vs. discrete TO-220 devices. |
Availability
SBG2040CT is available at Aetrix Electronics and suitable for DC/DC converters, automotive body control modules, solar microinverters, and industrial motor drive freewheeling circuits requiring stable component supply and long-term production continuity.
Supply support for SBG2040CT 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 SBG20xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-reliability power conversion in automotive, industrial, and renewable energy systems.
FAQ
Is SBG2040CT RoHS compliant and lead-free?
Yes, SBG2040CT features a lead-free finish and is RoHS compliant per EU Directive Annex Note 7, with glass and high-temperature solder exemptions applied. Terminal plating is pure tin, verified solderable per MIL-STD-202 Method 208, and compatible with standard reflow profiles including Pb-free JEDEC J-STD-020C Level 1 moisture sensitivity handling.
What is the maximum continuous operating temperature for SBG2040CT?
The SBG2040CT has a specified operating junction temperature range of –65°C to +150°C. Its average rectified current rating of 20 A is guaranteed at TC = 105°C; operation above this case temperature requires derating per Figure 1 in the datasheet, with thermal shutdown advised beyond 150°C junction temperature.
Can SBG2040CT replace SBG2035CT or SBG2045CT in existing designs?
SBG2040CT is pin- and package-compatible with SBG2035CT and SBG2045CT, but substitution requires verification of system-level voltage margin: SBG2040CT's 40 V VRRM sits between the 35 V and 45 V ratings. In 24 V systems with <15 V transients, it is functionally interchangeable; in 36 V nominal systems, SBG2045CT is preferred for safety margin.
Does SBG2040CT require a heatsink in 20 A operation?
At 20 A average current and TA = 25°C, a heatsink is mandatory to maintain TJ ≤ 150°C due to 5.5 W conduction loss per element. With RθJC = 2.0 °C/W and typical RθCA ≈ 15–25 °C/W for 2-layer PCB copper pours, a minimum 15 cm² external heatsink is recommended to limit case temperature to ≤105°C per datasheet rating.
SBG2040CT 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:
- Discontinued at Digi-Key
- 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 FAQ
1.How can I place an order for SBG2040CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG2040CT 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 reliable?
The price and inventory of SBG2040CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBG2040CT is usually 5 days.
3.What payment methods are accepted for SBG2040CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG2040CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG2040CT?
SBG2040CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG2040CT 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?
For technical support, including SBG2040CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG2040CT requirements.
6.How does Aetrix verify that SBG2040CT is sourced from the original manufacturer or authorized distributors?
All SBG2040CT 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 meets industry standards.
7.What is the process for return or replacement of SBG2040CT?
All SBG2040CT units undergo pre-shipment inspection (PSI). If there is an issue with SBG2040CT, 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 part is unused and in its original packaging.
Return procedure for SBG2040CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG2040CT Tags
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BAV99-7-F
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BAT54S-7-F
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