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Diodes Incorporated SBG1045CT-T
- Part No.:
- SBG1045CT-T
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG1045CT-T.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:8,131
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Product details
Overview
SBG1045CT-T from Diodes Incorporated is a 45 V, 10 A dual common-cathode surface-mount Schottky barrier rectifier in D²PAK package, featuring 0.55 V forward voltage at 5.0 A per element, 125 A non-repetitive surge capability, and 3.0 °C/W junction-to-case thermal resistance-used in low-voltage DC-DC output rectification and polarity protection circuits.
For engineers reviewing the SBG1045CT-T datasheet, SBG1045CT-T pinout, SBG1045CT-T application, or SBG1045CT-T equivalent, key selection criteria include reverse voltage rating (45 V), average output current (10 A @ TC = 95°C), forward voltage drop, thermal resistance, and D²PAK mounting compatibility with heatsink interfaces.
Technical Context
This dual-element Schottky rectifier integrates two anodes sharing a common cathode terminal, enabling synchronous or independent half-wave rectification paths. Its guard ring die construction provides transient overvoltage immunity, while low forward voltage minimizes conduction loss in high-frequency switching converters.
Rated for 45 V DC blocking and 32 V RMS reverse voltage, it supports operation up to +125°C junction temperature with derating above 95°C case temperature. Capacitance is 275 pF per element at 1 MHz and 4 V reverse bias, supporting fast-switching behavior in SMPS and inverter freewheeling stages.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Reverse Voltage | 45 V - defines maximum allowable DC or peak AC reverse bias before breakdown |
| Avg. Rectified Current | 10 A @ TC = 95°C - sustained DC output current capability with heatsink mounting |
| Forward Voltage | 0.55 V @ IF = 5.0 A - low conduction loss per diode element, critical for efficiency in <5 V output rails |
| Surge Current | 125 A (8.3 ms half-sine) - withstands inrush and fault transients without failure |
| Thermal Resistance | 3.0 °C/W (Junction-to-Case) - enables direct heatsink coupling for thermal management |
| Total Capacitance | 275 pF @ 1 MHz, 4 V - impacts high-frequency switching noise and EMI filtering design |
Pinout & Package
Package: D²PAK (TO-263AB), molded plastic case with UL 94V-0 flammability rating, tin-plated terminals, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky diode element |
| Pin 2 & 4 | Cathode (Common) | Shared cathode connection for both diode elements; primary thermal path to PCB/heatsink |
| Pin 3 | Anode 2 | Input terminal for second Schottky diode element |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Enhances transient voltage immunity without external TVS, improving system robustness in noisy environments |
| Low forward voltage drop | 0.55 V at 5 A reduces power dissipation by ~30% vs. comparable 0.75 V Si diodes, lowering thermal load |
| High surge rating | 125 A peak surge capacity allows reliable operation during startup surges and short-circuit events |
| Dual common-cathode configuration | Enables compact dual-output or redundant rectification in space-constrained DC-DC modules |
Applications
| DC-DC Converter Output Rectification | Reverse Polarity Protection |
|---|---|
Use Scenario: Used as secondary-side synchronous rectifier in isolated 12 V → 3.3 V/5 V flyback or forward converters. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss unidirectional current path for regulated low-voltage outputs. Use Value: 0.55 V VF minimizes conduction loss, directly improving converter efficiency by 1–2% at full load. | Use Scenario: Placed in series with main power input to prevent damage from incorrect battery or adapter connection. IC Role / Device Role / Timing Role: Common-cathode dual diode configured as OR-ing or polarity guard, with one anode tied to supply and cathode to load. Use Value: Low VF ensures minimal voltage drop (<0.6 V) under normal operation, preserving system headroom. |
| Freewheeling Diode in Motor Drives | Low-Voltage Inverter Output Stage |
Use Scenario: Mounted across brushed DC motor windings or H-bridge switches to clamp inductive kickback. IC Role / Device Role / Timing Role: Freewheeling path for stored inductive energy during PWM off-time. Use Value: 125 A surge rating handles repetitive motor stall currents without degradation. | Use Scenario: Integrated into 24 V or 48 V solar microinverter or UPS DC link stage for bidirectional energy flow. IC Role / Device Role / Timing Role: High-frequency rectification element in inverter output filter stage. Use Value: 275 pF capacitance and fast recovery support clean waveform fidelity up to 100 kHz switching. |
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-16CTH04-M3/45 | 45 V VRRM, 16 A IO, TO-220AC package, higher current but through-hole mount | Requires PCB through-hole footprint and heatsink screw mounting; not SMT-compatible | Select when higher continuous current margin is needed and board assembly supports through-hole |
| ON Semiconductor MBR1045CT | Identical 45 V/10 A rating, same D²PAK package, but 0.60 V VF @ 5 A (vs. 0.55 V) | Slightly higher conduction loss; otherwise functionally interchangeable in existing layouts | Choose if Diodes stock is constrained; verify thermal performance with 0.05 V higher VF |
Compared with VS-16CTH04-M3/45 and MBR1045CT, SBG1045CT-T offers the lowest forward voltage in D²PAK, optimizing efficiency in thermally limited SMT designs-while MBR1045CT provides drop-in layout compatibility, and VS-16CTH04-M3/45 suits higher-current through-hole builds.
Availability
SBG1045CT-T is available at Aetrix Electronics and suitable for DC-DC converter output rectification, reverse polarity protection, freewheeling in motor drives, and low-voltage inverter output stages requiring stable component supply and long-term industrial availability.
Supply support for SBG1045CT-T 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 US.
The SBG10xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for high-efficiency, low-voltage power conversion in industrial and computing power supplies.
FAQ
Is SBG1045CT-T RoHS compliant?
Yes, SBG1045CT-T features lead-free finish and is RoHS compliant per EU Directive Annex Notes 5 and 7, with exemptions applied for glass and high-temperature solder. It meets J-STD-020C moisture sensitivity Level 1 and is rated for reflow soldering per industry standards.
What is the thermal derating behavior above 95°C case temperature?
Per Figure 1 in the datasheet, average forward current must be linearly derated from 10 A at TC = 95°C to zero at TC = 125°C. This reflects junction temperature limits and requires heatsink design to maintain TC ≤ 95°C under full load.
Can SBG1045CT-T replace SBG1040CT in an existing design?
Yes-SBG1045CT-T shares identical package, pinout, and thermal characteristics with SBG1040CT, differing only in peak reverse voltage (45 V vs. 40 V). No layout or thermal changes are required; the higher VRRM provides additional margin against voltage transients.
Why is SBG1045CT-T marked "NOT RECOMMENDED FOR NEW DESIGN"?
This designation indicates Diodes Incorporated has introduced newer-generation Schottky rectifiers (e.g., lower VF, improved thermal performance, or smaller packages) that supersede SBG1045CT-T. The part remains fully qualified and supported for legacy production and repair, but new designs should evaluate alternatives like the APx1045 series.
SBG1045CT-T 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):
- 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 @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
SBG1045CT-T FAQ
1.How can I place an order for SBG1045CT-T through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG1045CT-T 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 SBG1045CT-T reliable?
The price and inventory of SBG1045CT-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBG1045CT-T is usually 5 days.
3.What payment methods are accepted for SBG1045CT-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG1045CT-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG1045CT-T?
SBG1045CT-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG1045CT-T 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 SBG1045CT-T?
For technical support, including SBG1045CT-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG1045CT-T requirements.
6.How does Aetrix verify that SBG1045CT-T is sourced from the original manufacturer or authorized distributors?
All SBG1045CT-T 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 SBG1045CT-T meets industry standards.
7.What is the process for return or replacement of SBG1045CT-T?
All SBG1045CT-T units undergo pre-shipment inspection (PSI). If there is an issue with SBG1045CT-T, 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 SBG1045CT-T part is unused and in its original packaging.
Return procedure for SBG1045CT-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG1045CT-T Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
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BAV99,215
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BAT54SLT1G
onsemi
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BAV70LT1G
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BAT54CLT1G
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BAT54S-7-F
Diodes Incorporated
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BAV99LT1G
onsemi
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BAT54S,215
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