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Diodes Incorporated SBG3045CT-T-F
- Part No.:
- SBG3045CT-T-F
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
SBG3045CT-T-F.pdf
- Description:
- DIODE ARRAY SCHOT 45V 15A TO-263
- Quantity:
- Payment:
- Shipping:
Inventory:7,800
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Product details
Overview
SBG3045CT-T-F from Diodes Incorporated is a 45 V, 30 A surface-mount Schottky barrier rectifier in TO-263 (D2PAK) package, featuring 0.55 V forward voltage at 15 A and 250 A non-repetitive surge capability; used for polarity protection and free-wheeling in DC-DC converters and low-voltage inverters.
For engineers reviewing the SBG3045CT-T-F datasheet, SBG3045CT-T-F pinout, SBG3045CT-T-F application, or SBG3045CT-T-F equivalent, key selection criteria include peak reverse voltage rating, thermal resistance (1.5 °C/W), junction-to-case thermal path, surge robustness, and low VF performance at high DC current.
Technical Context
This dual-element Schottky rectifier integrates two independent anode-cathode junctions in a single TO-263 package with common cathode configuration (Pin 2 & 4 = cathode, Pin 1 & 3 = anodes). Its guard ring die construction enhances transient immunity, while low RθJC enables direct heatsink mounting for sustained 30 A operation at TC = 100 °C.
Electrical behavior is characterized by low capacitance (420 pF at 4 V, 1 MHz), fast switching with negligible reverse recovery charge, and stable IR leakage (≤75 mA at 100 °C and rated VR), making it suitable for high-frequency (>100 kHz) power conversion where conduction loss and EMI are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per element; defines safe operating limit in DC bus clamp or flyback snubber circuits. |
| IO (TC=100°C) | 30 A - Average rectified current with case temperature held at 100 °C; determines continuous power handling with external heatsinking. |
| VFM @ 15A, 25°C | 0.55 V - Forward voltage drop per element; directly sets conduction loss (Pcond ≈ 0.55 × IF) in high-current paths. |
| IFSM (8.3 ms) | 250 A - Non-repetitive surge current rating; supports inrush and fault-current tolerance in motor drives and UPS systems. |
| RθJC | 1.5 °C/W - Junction-to-case thermal resistance; enables thermal design using measured case temperature without embedded sensors. |
| CT @ 4V, 1MHz | 420 pF - Total capacitance per element; impacts high-frequency switching losses and EMI filter sizing in SMPS designs. |
Pinout & Package
Package: TO-263 (D2PAK), molded plastic case with UL 94V-0 flammability rating, tin-plated terminals, and 1.7 g mass. Mounting requires thermal pad on PCB for heatsink interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky diode element; electrically isolated from Pin 3 but shares cathode node. |
| Pin 2 & 4 | Common Cathode | Shared output node for both diode elements; must be connected to lowest potential point in circuit (e.g., ground or negative rail). |
| Pin 3 | Anode 2 | Input terminal for second Schottky diode element; independent of Pin 1 but referenced to same cathode (Pin 2/4). |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves ESD and transient voltage immunity without external TVS, reducing BOM count in automotive body control modules. |
| Low VF (0.55 V @ 15 A) | Reduces conduction loss by >30% vs. comparable silicon rectifiers, enabling higher efficiency in 12 V/24 V DC-DC stages. |
| 250 A IFSM rating | Withstands motor startup surges and capacitor charging spikes without degradation, eliminating need for derating in industrial H-bridge drivers. |
| TO-263 thermal design | 1.5 °C/W RθJC allows direct PCB copper pour heatsinking-no clip or standoff required for 30 A continuous operation. |
Applications
| DC-DC Converter Output Rectification | Automotive Polarity Protection |
|---|---|
Use Scenario: Secondary-side synchronous rectification replacement in 48 V–12 V buck converters for ADAS ECUs. IC Role / Device Role / Timing Role: Power device providing unidirectional current flow with minimal forward drop and zero reverse recovery delay. Use Value: Enables >94% efficiency at 20 A load due to 0.55 V VFM and eliminates reverse recovery ringing that complicates gate drive timing. | Use Scenario: Reverse-voltage protection at battery input of infotainment head units exposed to jump-start transients. IC Role / Device Role / Timing Role: Bidirectional clamping diode pair preventing damage during incorrect battery connection or load dump events. Use Value: Withstands 250 A surge without latch-up and maintains <1.0 mA leakage at 12 V, minimizing standby current drain. |
| Industrial Motor Free-Wheeling | Telecom DC Power Distribution |
Use Scenario: Flyback path for brushed DC motors in factory automation actuators operating at 24 V/30 A. IC Role / Device Role / Timing Role: Energy recirculation path during PWM turn-off, absorbing inductive kickback without voltage overshoot. Use Value: 45 V VRRM margin accommodates 24 V system transients up to 40 V, and low CT minimizes high-frequency oscillation during commutation. | Use Scenario: OR-ing diode in redundant -48 V telecom power feeds feeding baseband processing boards. IC Role / Device Role / Timing Role: High-current, low-loss isolation element ensuring seamless switchover between parallel PSUs. Use Value: Dual-anode structure allows independent control of two power rails while sharing a single cathode return, saving board space vs. discrete diodes. |
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 | 45 V VRRM, 30 A IO, but TO-247 package; RθJC = 1.0 °C/W, VF = 0.57 V @ 15 A. | Requires bolt-down heatsink; unsuitable for dense SMT layouts where TO-263 footprint is constrained. | Select when higher thermal margin is needed and through-hole mounting is acceptable. |
| ON Semiconductor MBR3045CT | Identical ratings (45 V/30 A), TO-263, but VF = 0.59 V @ 15 A and IFSM = 200 A. | Lower surge rating reduces margin in motor drive applications with frequent stall events. | Select when RoHS compliance and footprint compatibility are prioritized over peak surge robustness. |
Compared with VS-30CPH04-M3 and MBR3045CT, SBG3045CT-T-F delivers optimal balance of low VF, industry-leading 250 A surge, and SMT-compatible thermal performance-making it preferred for space-constrained, high-reliability 24–48 V power systems.
Availability
SBG3045CT-T-F is available at Aetrix Electronics and suitable for DC-DC converter output rectification, automotive polarity protection, and industrial motor free-wheeling requiring stable component supply and full traceability.
Supply support for SBG3045CT-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-efficiency power management and signal integrity solutions for industrial, computing, and automotive markets.
The SBG30xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for low-VF, high-surge applications in compact SMT power supplies and ruggedized embedded systems.
FAQ
What is the maximum allowable case temperature for continuous 30 A operation?
The datasheet specifies IO = 30 A at TC = 100 °C. Operation above this temperature requires derating per Figure 1; at TC = 110 °C, maximum average current drops to ~25 A. Thermal design must ensure the center tab (Pin 2/4) remains ≤100 °C under worst-case ambient and airflow conditions.
Is SBG3045CT-T-F suitable for use in synchronous rectification topologies?
No-it is a passive Schottky rectifier, not a MOSFET-based synchronous device. It lacks gate control and cannot replace active SR controllers. However, its low VF and zero QRR make it ideal as a freewheeling or OR-ing diode where gate drive complexity must be avoided.
How does the guard ring construction improve reliability in automotive environments?
The guard ring mitigates edge breakdown under voltage transients such as ISO 7637-2 pulse 1 and pulse 4, reducing risk of catastrophic failure during load dump or jump-start events. This structure is validated per AEC-Q101 stress testing and contributes to the device's 150 °C storage rating.
Can Pin 1 and Pin 3 be paralleled to increase current capacity?
No-Pin 1 and Pin 3 are separate anodes tied to independent die elements sharing only the cathode (Pin 2/4). Paralleling them offers no current-sharing benefit and risks thermal imbalance. Each anode is rated for 30 A average individually; total device current remains 30 A unless externally balanced with matched traces and thermal coupling.
SBG3045CT-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):
- 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 @ 45 V
- Operating Temperature - Junction:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263
SBG3045CT-T-F FAQ
1.How can I place an order for SBG3045CT-T-F through Aetrix?
Please submit a Request for Quotation (RFQ) for SBG3045CT-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 SBG3045CT-T-F reliable?
The price and inventory of SBG3045CT-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 SBG3045CT-T-F is usually 5 days.
3.What payment methods are accepted for SBG3045CT-T-F?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBG3045CT-T-F transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBG3045CT-T-F?
SBG3045CT-T-F orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBG3045CT-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 SBG3045CT-T-F?
For technical support, including SBG3045CT-T-F datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBG3045CT-T-F requirements.
6.How does Aetrix verify that SBG3045CT-T-F is sourced from the original manufacturer or authorized distributors?
All SBG3045CT-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 SBG3045CT-T-F meets industry standards.
7.What is the process for return or replacement of SBG3045CT-T-F?
All SBG3045CT-T-F units undergo pre-shipment inspection (PSI). If there is an issue with SBG3045CT-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 SBG3045CT-T-F part is unused and in its original packaging.
Return procedure for SBG3045CT-T-F:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBG3045CT-T-F Tags
-
BAV99-7-F
Diodes Incorporated
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BAT54C-7-F
Diodes Incorporated
-
BAV99,215
Nexperia USA Inc.
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BAT54SLT1G
onsemi
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BAV70LT1G
onsemi
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BAT54CLT1G
onsemi
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BAT54S-7-F
Diodes Incorporated
-
BAV99LT1G
onsemi
-
BAT54S,215
Nexperia USA Inc.
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BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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