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Diodes Incorporated SBG2045CT-T-F
- Part No.:
- SBG2045CT-T-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG2045CT-T-F.pdf
- Description:
- DIODE ARR SCHOTT 45V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,160
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Product details
Overview
SBG2045CT-T-F from Diodes Incorporated is a 45 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 650 pF typical junction capacitance - deployed in low-voltage DC/DC converter output stages and reverse-polarity protection circuits.
For engineers reviewing the SBG2045CT-T-F datasheet, SBG2045CT-T-F pinout, SBG2045CT-T-F application, or SBG2045CT-T-F equivalent, key selection criteria include its 45 V blocking rating, thermal resistance of 2.0 °C/W (junction-to-case), RoHS-compliant tin finish, and D²PAK mounting compatibility with high-current PCB heatsinking.
Technical Context
This dual-element Schottky rectifier integrates two independent anode terminals sharing a common cathode, enabling synchronous rectification or dual-output freewheeling in center-tapped or interleaved topologies. Its guard ring die construction enhances transient immunity without external TVS devices.
Rated for continuous 20 A average output current at TC = 105°C, it sustains 225 A peak surge for 8.3 ms (half-sine) and exhibits low 0.55 V VF at 10 A - critical for minimizing conduction loss in 12 V and 24 V industrial power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 45 V - defines maximum DC or repetitive AC reverse bias before breakdown; sets usable range in 36 V nominal systems. |
| Average Output Current | 20 A @ TC = 105°C - specifies sustained DC current handling when mounted on heatsink; derates linearly below 105°C case temp. |
| Forward Voltage | 0.55 V @ IF = 10 A per element - directly determines conduction loss (5.5 W total for both elements at 10 A each). |
| Surge Current | 225 A peak (8.3 ms half-sine) - supports inrush and fault-current tolerance in motor drives and UPS hold-up stages. |
| Junction-to-Case Thermal Resistance | 2.0 °C/W - enables thermal design with standard copper pour or external heatsink; limits ΔTJC to 40°C at 20 W dissipation. |
| Total Capacitance | 650 pF @ 4 V, 1 MHz - impacts high-frequency switching noise and EMI filter sizing in >100 kHz SMPS designs. |
Pinout & Package
Package: D²PAK (TO-263), 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 diode element; connects to high-side switch node in buck or flyback secondary. |
| Pin 2 & Pin 4 | Cathode (Common) | Shared cathode node for both diodes; ties to output rail or ground return path; electrically bonded to exposed metal tab. |
| Pin 3 | Anode 2 | Input terminal for second Schottky diode element; used for dual-output freewheeling or redundancy paths. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient robustness without adding external clamping components. |
| Low forward voltage drop | 0.55 V at 10 A reduces conduction losses by ~30% vs. comparable silicon rectifiers in 12–24 V systems. |
| Dual common-cathode configuration | Enables compact layout for dual-rail outputs or interleaved phase legs without discrete cathode routing. |
| RoHS-compliant tin finish | Ensures lead-free assembly compatibility and eliminates post-solder cleaning for high-reliability industrial reflow. |
Applications
| DC/DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
|
Use Scenario: Secondary-side rectification in 12 V/24 V isolated DC/DC modules for telecom and industrial PLCs. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss, high-efficiency unidirectional current flow per output winding. Use Value: 0.55 V VF minimizes power loss at 10–20 A loads, improving system efficiency by 2–4% over standard silicon diodes. |
Use Scenario: Input protection for 24 V battery-powered instrumentation against accidental reverse connection. IC Role / Device Role / Timing Role: Common-cathode dual diode configured as OR-ing device with one anode tied to battery, other to backup supply. Use Value: 45 V VRWM withstands load-dump transients up to 35 V, while low VF avoids excessive voltage drop during normal operation. |
| Freewheeling in Motor Drives | High-Frequency Inverter Output Stage |
|
Use Scenario: Freewheeling path for brushed DC motor H-bridge outputs during PWM off-time. IC Role / Device Role / Timing Role: Dual-anode Schottky providing separate return paths for bidirectional current decay in each half-bridge leg. Use Value: 225 A IFSM handles motor stall surges; 650 pF CT limits switching ringing in 20–50 kHz PWM operation. |
Use Scenario: Output rectification in 100 kHz resonant LLC inverters for LED drivers and medical power supplies. IC Role / Device Role / Timing Role: High-speed Schottky pair converting high-frequency AC to regulated DC with minimal recovery loss. Use Value: Zero reverse recovery charge eliminates switching loss spikes, enabling stable operation without snubbers. |
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 | 40 V VRRM, 20 A IO, TO-247AC package, 0.52 V VF @ 10 A | Higher thermal mass but requires through-hole mounting; better for >125°C ambient environments | Select when board space allows through-hole and higher junction temperature margin is needed. |
| ON Semiconductor MBR2045CT | 45 V VRRM, 20 A IO, same D²PAK package, 0.62 V VF @ 10 A | Higher forward voltage increases conduction loss by ~0.7 W per element at full load | Choose only if Diodes Inc. supply continuity is constrained and thermal budget permits extra loss. |
Compared with VS-20CPH04-M3 and MBR2045CT, SBG2045CT-T-F offers optimal balance of low VF, surface-mount D²PAK form factor, and proven surge robustness - making it preferred for space-constrained, high-efficiency 24 V industrial converters where thermal management relies on PCB copper area.
Availability
SBG2045CT-T-F is available at Aetrix Electronics and suitable for industrial DC/DC converters, battery-powered instrumentation, motor drive freewheeling circuits, and 24 V reverse-polarity protection requiring stable component supply and long-term sourcing assurance.
Supply support for SBG2045CT-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 and automotive markets.
SBG2045CT-T-F belongs to Diodes' high-current Schottky rectifier product line, engineered for efficiency-critical 12–48 V power conversion where low VF, surge resilience, and surface-mount thermal performance are mandatory.
FAQ
What is the maximum allowable case temperature for continuous operation?
The SBG2045CT-T-F is rated for 20 A average output current at TC = 105°C. Operation above this temperature requires derating per Figure 1 in the datasheet: current must be reduced linearly to zero at 150°C case temperature. Exceeding 105°C without derating risks thermal runaway due to VF negative temperature coefficient.
Can SBG2045CT-T-F replace SBG2040CT in existing designs?
Yes - SBG2045CT-T-F shares identical D²PAK package, pinout, and thermal characteristics with SBG2040CT, differing only in peak reverse voltage (45 V vs. 40 V). It provides 5 V additional blocking margin with no layout or thermal changes required, making it a safe drop-in upgrade for designs operating near the 40 V limit.
Is the exposed metal tab electrically connected to any pin?
Yes - the exposed metal tab (pins 2 and 4) is internally bonded to the common cathode terminal. It must be electrically isolated from other potentials unless intentionally used as the cathode return path, and thermally connected to a heatsink or large copper pour for effective thermal management.
Why is SBG2045CT-T-F marked "NOT RECOMMENDED FOR NEW DESIGN"?
This designation reflects Diodes Incorporated's internal roadmap prioritization - newer alternatives like the SBRA2045CT offer improved VF and lower RθJC. However, SBG2045CT-T-F remains fully qualified, in active production, and supported with full datasheet specifications and reliability data for legacy program continuity.
SBG2045CT-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):
- 45 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 @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SBG2045CT-T-F FAQ
1.How can I place an order for SBG2045CT-T-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG2045CT-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 SBG2045CT-T-F reliable?
The price and inventory of SBG2045CT-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 SBG2045CT-T-F is usually 5 days.
3.What payment methods are accepted for SBG2045CT-T-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG2045CT-T-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG2045CT-T-F?
SBG2045CT-T-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG2045CT-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 SBG2045CT-T-F?
For technical support, including SBG2045CT-T-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG2045CT-T-F requirements.
6.How does Aetrix verify that SBG2045CT-T-F is sourced from the original manufacturer or authorized distributors?
All SBG2045CT-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 SBG2045CT-T-F meets industry standards.
7.What is the process for return or replacement of SBG2045CT-T-F?
All SBG2045CT-T-F units undergo pre-shipment inspection (PSI). If there is an issue with SBG2045CT-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 SBG2045CT-T-F part is unused and in its original packaging.
Return procedure for SBG2045CT-T-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG2045CT-T-F Tags
-
BAV99-7-F
Diodes Incorporated
-
BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
-
BAT54SLT1G
onsemi
-
BAV70LT1G
onsemi
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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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