My Inquiry
My Account
Diodes Incorporated SBG1040CT
- Part No.:
- SBG1040CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG1040CT.pdf
- Description:
- DIODE ARR SCHOTT 40V 10A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:6,970
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SBG1040CT 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 rating, and guard ring die construction for transient protection-used in low-voltage DC/DC converter output stages and polarity protection circuits.
For engineers reviewing the SBG1040CT datasheet, SBG1040CT pinout, SBG1040CT application, or SBG1040CT equivalent, key selection criteria include peak reverse voltage (40 V), average output current (10 A @ TC = 95°C), thermal resistance (3.0 °C/W), and dual common-cathode configuration for synchronous rectification or dual-output supplies.
Technical Context
This dual Schottky rectifier integrates two independent anode terminals sharing a single cathode, enabling parallel output rectification or independent channel operation with shared thermal path. Its guard ring die structure enhances ruggedness against voltage transients without external snubbers.
Designed for high-frequency switching topologies, it delivers low conduction loss (VF = 0.55 V @ 5 A) and fast recovery (no minority-carrier storage), minimizing switching losses in 100–500 kHz DC/DC converters and free-wheeling applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum repetitive reverse blocking voltage per diode element; sets upper limit for input/output voltage rails in buck or flyback secondary side. |
| IO | 10 A @ TC = 95°C - Continuous average forward current per element with heatsink; defines usable output power in 12 V/24 V industrial SMPS. |
| VFM | 0.55 V @ IF = 5.0 A - Low forward drop reduces conduction loss by >40% vs. standard PN rectifiers, improving efficiency in high-current paths. |
| IFSM | 125 A (8.3 ms half-sine) - Peak surge capability supports inrush current handling during hot-plug or load-step events. |
| RθJC | 3.0 °C/W - Junction-to-case thermal resistance enables direct mounting to PCB copper pour or heatsink; allows ~33 W dissipation at ΔT = 100°C. |
| CT | 275 pF @ 1 MHz, 4 V - Low junction capacitance minimizes switching node ringing and EMI in high-dV/dt environments. |
Pinout & Package
Package: D²PAK (TO-263), surface-mount, single-piece molded plastic case with tin-plated copper leads; UL 94V-0 rated, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky element; connects to transformer secondary or switch node in dual-output topology. |
| Pin 2 & 4 | Cathode (common) | Shared cathode node for both diodes; serves as main output return path and primary thermal interface to PCB copper. |
| Pin 3 | Anode 2 | Input terminal for second Schottky element; enables independent control of two output rails or phase interleaving. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves avalanche ruggedness and transient immunity without adding external clamping components. |
| Low forward voltage (0.55 V) | Reduces power loss by ≥1.5 W per element at 5 A vs. comparable 45 V Schottkys, lowering thermal stress in compact layouts. |
| Dual common-cathode configuration | Enables space-efficient dual-output rectification with shared thermal path-ideal for 5 V + 3.3 V or ±12 V supplies. |
| 125 A surge rating | Withstands repeated cold-start surges in automotive accessory modules and PoE-powered devices without derating. |
Applications
| DC/DC Converter Output Stage | Polarity Protection Circuit |
|---|---|
Use Scenario: Secondary-side rectification in 48 V–12 V isolated buck converters for telecom power shelves. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss, high-efficiency energy transfer from transformer secondary to output capacitor bank. Use Value: 0.55 V VF reduces conduction loss by 2.75 W total at 5 A per rail, enabling higher power density without forced air cooling. | Use Scenario: Reverse-voltage protection for USB-C PD ports and industrial 24 V fieldbus interfaces. IC Role / Device Role / Timing Role: Common-cathode dual diode configured as OR-ing device to block reverse current while maintaining low forward drop. Use Value: Shared cathode simplifies PCB layout and reduces trace inductance, improving response to short-circuit faults. |
| Free-Wheeling Diode | High-Frequency Inverter Bridge |
Use Scenario: Freewheel path in 200 kHz synchronous buck controllers driving solenoid actuators in HVAC valve modules. IC Role / Device Role / Timing Role: Fast-recovery Schottky element conducting inductive kickback current during high-side FET off-time. Use Value: 275 pF capacitance and zero recovery charge eliminate voltage spikes >10 V above rail, reducing EMI filter size. | Use Scenario: Upper-leg anti-parallel diode in 10 kW three-phase SiC inverter for EV on-board chargers. IC Role / Device Role / Timing Role: Parallel-connected dual elements provide redundant current path and distributed thermal mass across D²PAK footprint. Use Value: 10 A per element and 3.0 °C/W RθJC support 20 A continuous operation with 2-layer 2 oz copper heatsink pad. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SS1040 | Single-element, same VRRM/IO, but no common-cathode dual configuration; RθJC = 4.5 °C/W. | Requires two discrete devices for dual-rail use; less thermally efficient in shared heatsink layouts. | Select when only one output rail is needed and board space permits separate placement. |
| MBR2040CT | Higher IO (20 A), same VRRM, but TO-220AC package; RθJC = 2.0 °C/W, leaded through-hole mounting. | Better thermal performance but incompatible with automated SMT assembly; larger footprint. | Select for high-power legacy designs where through-hole reliability and heatsink accessibility outweigh SMT benefits. |
Compared with SS1040 and MBR2040CT, SBG1040CT uniquely balances dual-channel integration, surface-mount compatibility, and thermal efficiency in a single D²PAK package-making it optimal for space-constrained, dual-output DC/DC converters requiring automated assembly.
Availability
SBG1040CT is available at Aetrix Electronics and suitable for industrial power supplies, automotive body control modules, and PoE-powered network equipment requiring stable component supply and RoHS-compliant sourcing.
Supply support for SBG1040CT 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-performance, cost-optimized components for power management, signal integrity, and protection.
The SBG10xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, high-frequency switching power conversion in industrial, computing, and communications infrastructure.
FAQ
Is SBG1040CT suitable for automotive under-hood applications?
No-SBG1040CT is rated for operation from –65°C to +125°C junction temperature, but Diodes Incorporated explicitly marks it "NOT RECOMMENDED FOR NEW DESIGN" and does not qualify it to AEC-Q101. It lacks automotive-specific screening, traceability, and failure rate data required for under-hood use.
Can SBG1040CT be paralleled with another unit to increase current capacity?
Paralleling is not recommended due to mismatch in forward voltage (VF) between units, which causes current imbalance. The device's 3.0 °C/W RθJC and D²PAK thermal design assume single-unit mounting; parallel use risks thermal runaway without active current sharing.
What is the meaning of "common-cathode" in SBG1040CT's configuration?
Common-cathode means both internal Schottky diodes share one cathode terminal (Pins 2 & 4), while having separate anodes (Pin 1 and Pin 3). This allows independent anode connections to different input sources while routing all output current through a single low-inductance cathode path to ground or output rail.
Does SBG1040CT require a heatsink for 10 A operation?
Yes-at 10 A average current and 0.55 V forward drop, power dissipation is ~5.5 W per element (11 W total). With RθJC = 3.0 °C/W, junction temperature rise exceeds safe limits without a heatsink or substantial PCB copper area (≥10 cm² 2 oz copper) acting as thermal spreader.
SBG1040CT 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):
- 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 FAQ
1.How can I place an order for SBG1040CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG1040CT 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 reliable?
The price and inventory of SBG1040CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBG1040CT is usually 5 days.
3.What payment methods are accepted for SBG1040CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG1040CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG1040CT?
SBG1040CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG1040CT 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?
For technical support, including SBG1040CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG1040CT requirements.
6.How does Aetrix verify that SBG1040CT is sourced from the original manufacturer or authorized distributors?
All SBG1040CT 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 meets industry standards.
7.What is the process for return or replacement of SBG1040CT?
All SBG1040CT units undergo pre-shipment inspection (PSI). If there is an issue with SBG1040CT, 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 part is unused and in its original packaging.
Return procedure for SBG1040CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG1040CT 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
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
