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Diodes Incorporated SBL1050CT
- Part No.:
- SBL1050CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBL1050CT.pdf
- Description:
- DIODE ARR SCHOTT 50V 10A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:8,348
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Product details
Overview
SBL1050CT from Diodes Incorporated is a 10A dual common-cathode Schottky barrier rectifier in TO-220AB package, rated for 50V peak repetitive reverse voltage and 0.70V forward voltage drop at 5.0A and 25°C. It features guard ring die construction for transient protection, 175A non-repetitive surge capability, and 5.5°C/W junction-to-case thermal resistance-designed for low-voltage, high-frequency inverters and polarity protection circuits.
For engineers reviewing the SBL1050CT datasheet, SBL1050CT pinout, SBL1050CT application, or SBL1050CT equivalent, key selection criteria include its 50V blocking rating, dual common-cathode configuration, TO-220AB mechanical footprint, thermal performance under 95°C case temperature, and suitability for free-wheeling diode roles in DC-DC converters and automotive power supplies.
Technical Context
This dual-element Schottky rectifier integrates two anodes (Pin 1 and Pin 3) sharing a common cathode (Pin 2), with the metal case electrically connected to the cathode. Its guard ring die structure enhances ruggedness against voltage transients without requiring external snubbers.
Designed for high-efficiency operation, it delivers low conduction loss (VF = 0.70 V @ 5 A) and low junction capacitance (450 pF @ 4 V), enabling use in switching frequencies up to several hundred kHz while maintaining thermal stability via direct heatsink mounting through the case.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum peak reverse voltage each anode can block before breakdown; defines safe operating range in 24–48 V DC systems. |
| IO | 10 A @ TC = 95°C - Continuous average forward current per element when mounted on heatsink; sets minimum heatsink requirement. |
| VFM | 0.70 V @ IF = 5.0 A, TC = 25°C - Forward voltage per diode at mid-load; directly determines conduction loss (3.5 W total for both elements at 5 A). |
| IFSM | 175 A - Non-repetitive surge current (8.3 ms half-sine); supports motor startup and capacitor charging events without failure. |
| RθJC | 5.5 °C/W - Thermal resistance from junction to case; enables precise junction temperature calculation when heatsink thermal resistance is known. |
| Cj | 450 pF @ 1 MHz, 4 V - Junction capacitance per element; impacts high-frequency switching noise and EMI filter design. |
Pinout & Package
Package: TO-220AB - Molded plastic case with isolated metal tab (electrically connected to Pin 2), UL 94V-0 rated, lead-free and RoHS compliant. Mounting requires insulating washer if case is grounded.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first Schottky element; connects to positive side of input source in dual-output or bridge-configured topologies. |
| Pin 2 | Common Cathode | Shared output node for both diodes; electrically tied to metal case; must be referenced to system ground or return path. |
| Pin 3 | Anode 2 | Input terminal for second Schottky element; enables independent control or redundancy in dual-rail power paths. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient voltage immunity without external clamping components, reducing BOM count in automotive load-dump environments. |
| Dual common-cathode topology | Enables compact dual-output rectification or synchronous rectifier pairing with single gate-drive reference point. |
| Low forward voltage (0.70 V) | Reduces power dissipation by ~30% versus standard silicon rectifiers at 5 A, lowering thermal stress in sealed enclosures. |
| 175 A surge rating | Withstands repeated inrush currents from large electrolytic banks or inductive loads without parameter drift or bond-wire fusing. |
Applications
| DC-DC Converter Output Rectification | Automotive Alternator Auxiliary Rectification |
|---|---|
Use Scenario: Secondary-side rectification in 12 V/24 V isolated flyback or forward converters powering infotainment ECUs. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier providing low-loss, high-efficiency DC output with shared cathode return path. Use Value: 0.70 V VF minimizes conduction loss at 5–10 A loads, improving converter efficiency by ≥2% over standard diodes and reducing heatsink size. | Use Scenario: Supplemental rectification in vehicle alternators to support high-current accessory circuits during engine-off battery discharge. IC Role / Device Role / Timing Role: Polarity protection and freewheeling diode for auxiliary field winding or dual-battery isolation circuits. Use Value: Guard ring die withstands load-dump transients up to ±100 V, eliminating need for parallel TVS devices in ISO 7637-2 compliant designs. |
| Industrial Motor Drive Freewheeling | Redundant Power Supply OR-ing |
Use Scenario: Freewheeling path for brushed DC motors in factory automation actuators operating at 24–48 V bus voltage. IC Role / Device Role / Timing Role: Bidirectional energy recirculation path during PWM turn-off, clamping inductive kickback across H-bridge legs. Use Value: 175 A IFSM handles stall-current surges without degradation; TO-220AB case allows direct bolt-down to chassis for thermal management. | Use Scenario: OR-ing diode pair in redundant 24 V DC power supplies feeding PLC backplanes or safety controllers. IC Role / Device Role / Timing Role: Common-cathode dual diode prevents backfeed between supplies while enabling seamless switchover. Use Value: Matched VF tracking between elements ensures balanced current sharing; low RθJC maintains <125°C junction temp under full 10 A load. |
Availability
SBL1050CT is available at Aetrix Electronics and suitable for industrial motor drives, automotive power distribution modules, and redundant DC-DC converter outputs requiring stable component supply and long-term manufacturability assurance.
Supply support for SBL1050CT 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 centers across Asia and manufacturing in China, Taiwan, and the U.S.
The SBLxxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical 24–60 V power conversion in automotive, industrial, and telecom infrastructure applications.
FAQ
Is the metal case of SBL1050CT electrically connected to any pin?
Yes-the TO-220AB metal tab is internally connected to Pin 2 (common cathode). This requires electrical isolation from the heatsink unless the cathode node is intentionally grounded. Insulating washers and shoulder washers are recommended when mounting to conductive chassis surfaces.
What is the maximum continuous current per diode at 125°C case temperature?
At TC = 125°C, the derated average forward current is approximately 6.2 A per element, based on the forward current derating curve (Figure 1). This assumes proper heatsinking and ambient conditions that maintain case temperature at or below 125°C.
Can SBL1050CT replace SBL1045CT in an existing design?
Yes-SBL1050CT is a direct upgrade from SBL1045CT with identical pinout, package, and thermal characteristics, differing only in higher 50 V VRRM (vs. 45 V). No layout or thermal changes are needed, and it improves margin against voltage transients in 42 V automotive systems.
Does SBL1050CT meet AEC-Q101 requirements for automotive use?
No-SBL1050CT is not AEC-Q101 qualified. While widely used in automotive applications due to its robust guard ring construction and 150°C Tj rating, formal qualification requires additional stress testing and documentation not provided for this part number.
SBL1050CT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 50 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 700 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 50 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBL1050CT FAQ
1.How can I place an order for SBL1050CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1050CT 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 SBL1050CT reliable?
The price and inventory of SBL1050CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1050CT is usually 5 days.
3.What payment methods are accepted for SBL1050CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1050CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1050CT?
SBL1050CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1050CT 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 SBL1050CT?
For technical support, including SBL1050CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1050CT requirements.
6.How does Aetrix verify that SBL1050CT is sourced from the original manufacturer or authorized distributors?
All SBL1050CT 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 SBL1050CT meets industry standards.
7.What is the process for return or replacement of SBL1050CT?
All SBL1050CT units undergo pre-shipment inspection (PSI). If there is an issue with SBL1050CT, 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 SBL1050CT part is unused and in its original packaging.
Return procedure for SBL1050CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL1050CT Tags
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