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Diodes Incorporated SBL2050CT
- Part No.:
- SBL2050CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBL2050CT.pdf
- Description:
- DIODE ARR SCHOTT 50V 20A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:9,502
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Product details
Overview
SBL2050CT from Diodes Incorporated is a 20A dual common-cathode Schottky barrier rectifier in TO-220AB package, rated for 50V peak repetitive reverse voltage, 0.75V forward voltage at 10A/25°C, and 250A non-repetitive surge current; used in low-voltage DC power supplies for polarity protection and freewheeling in SMPS and motor drives.
For engineers reviewing the SBL2050CT datasheet, SBL2050CT pinout, SBL2050CT application, or SBL2050CT equivalent, key selection criteria include forward voltage drop at operating current, thermal resistance (2.8°C/W), junction capacitance (650pF), surge rating, and TO-220AB mounting compatibility with heatsink interfaces.
Technical Context
This dual common-cathode Schottky rectifier integrates two independent anode terminals (Pins 1 and 3) sharing a single cathode (Pin 2), enabling synchronous half-wave rectification or dual-output configurations without external parallel diodes. Its guard-ringed die construction provides transient immunity without external TVS components.
Designed for high-frequency switching environments, it delivers low conduction loss (VF = 0.75V @ 10A) and fast recovery (no minority-carrier storage), eliminating reverse recovery charge and associated switching losses in 50–500 kHz DC-DC converters and inverters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 50 V - Maximum reverse blocking capability before avalanche; sets upper limit for input voltage rails in 48V systems. |
| IO | 20 A @ TC = 95°C - Continuous output current when case is actively heatsinked; defines minimum heatsink requirement. |
| VFM | 0.75 V @ IF = 10A, TC = 25°C - Low conduction loss reduces power dissipation by ~7.5W vs. silicon rectifiers at same load. |
| IFSM | 250 A (8.3ms half-sine) - Withstands inrush surges from bulk capacitors or motor startup without failure. |
| RJC | 2.8 °C/W - Enables thermal design with standard TO-220 heatsinks; 56°C rise at full 20A continuous load. |
| Cj | 650 pF @ 4V, 1MHz - Limits high-frequency noise coupling and EMI generation in switching nodes. |
Pinout & Package
TO-220AB plastic package with isolated tab (electrically connected to Pin 2), screw-mount compatible, UL 94V-0 rated, weight 2.24 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first rectifier path; marked with white stripe on body. |
| Pin 2 | Cathode (common) | Shared cathode node; electrically tied to metal tab; must be insulated if mounted to grounded heatsink. |
| Pin 3 | Anode 2 | Input terminal for second rectifier path; unmarked side of device body. |
Key Features
| Feature | Design Value |
|---|---|
| Dual common-cathode configuration | Enables compact dual-input/single-output rectification without external wiring or shared cathode traces. |
| Guard-ringed Schottky die | Provides inherent transient voltage suppression (TVS-like behavior) without adding discrete protection devices. |
| Low thermal resistance (2.8°C/W) | Supports 20A continuous operation with passive heatsinking; eliminates need for forced-air cooling in most 48V applications. |
| High surge rating (250A) | Survives repeated cold-start events in industrial power supplies with large bulk capacitors (>10,000 µF). |
Applications
| AC-DC Adapter Output Stage | DC Motor Freewheeling |
|---|---|
Use Scenario: Secondary-side rectification in 24–48V wall adapters powering IoT gateways and PoE injectors. IC Role / Device Role / Timing Role: Dual-anode Schottky rectifier converting transformer AC to regulated DC; replaces two discrete diodes. Use Value: 0.75V VF minimizes conduction loss at 10–15A loads, improving efficiency by ≥2.5% over standard silicon rectifiers. | Use Scenario: Bidirectional flyback protection in brushed DC motor H-bridge drivers (e.g., robotic actuators). IC Role / Device Role / Timing Role: Common-cathode clamp providing simultaneous reverse-current paths during PWM turn-off. Use Value: Eliminates need for two separate Schottky diodes and associated PCB routing; reduces layout area by 35%. |
| 48V Telecom Power Supply | Polarity Protection Circuit |
Use Scenario: Input rectification stage in -48V telecom rectifiers handling 20A continuous load. IC Role / Device Role / Timing Role: Primary output rectifier handling full system current with minimal thermal derating. Use Value: 2.8°C/W RJC allows stable operation at 95°C case temperature using standard finned heatsinks. | Use Scenario: Reverse-voltage protection at battery inputs of portable medical monitors and handheld test equipment. IC Role / Device Role / Timing Role: Low-VF series-blocking element preventing damage during incorrect battery insertion. Use Value: 0.75V drop at 5A limits power loss to 3.75W-enabling compact thermally managed protection without active circuitry. |
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-20CPH05 | Same 50V VRRM, 20A IO, but TO-247 package; RJC = 1.8°C/W; VF = 0.72V @ 10A. | Higher thermal performance but larger footprint; requires different mounting hardware. | Select when thermal budget is tighter than board space constraints. |
| ON Semiconductor MBR2050CT | Identical TO-220AB package and pinout; VF = 0.78V @ 10A; IFSM = 200A; RJC = 3.0°C/W. | Lower surge rating and higher forward drop reduce margin in high-inrush applications. | Acceptable for cost-sensitive designs where 250A surge immunity is not required. |
Compared with VS-20CPH05 and MBR2050CT, the SBL2050CT offers optimal balance of surge robustness (250A), thermal resistance (2.8°C/W), and footprint compatibility-making it preferred for industrial 48V power supplies requiring field reliability and heatsink reuse.
Availability
SBL2050CT is available at Aetrix Electronics and suitable for AC-DC adapters, DC motor drivers, telecom power supplies, and polarity protection circuits requiring stable component supply across multi-year production cycles.
Supply support for SBL2050CT 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 Americas.
The SBL20xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical 24–60V power conversion in industrial, telecom, and automotive auxiliary systems.
FAQ
Is the metal tab of SBL2050CT electrically connected to any pin?
Yes-the metal tab is internally connected to Pin 2 (common cathode). When mounting to a heatsink, electrical isolation (e.g., mica washer + shoulder washer) is required unless the heatsink is biased at cathode potential. This connection is confirmed in the mechanical drawing and thermal test conditions of DS23015 Rev. F-2.
Can SBL2050CT replace SBL2040CT in an existing design?
Yes-both share identical TO-220AB package, pinout, and thermal characteristics. The only difference is VRRM: 50V vs. 40V. Replacement is safe if the circuit's maximum reverse voltage does not exceed 40V; otherwise, it improves margin. No layout or thermal redesign is needed.
What is the maximum recommended case temperature for continuous 20A operation?
The datasheet specifies IO = 20A at TC = 95°C. Operation above this temperature requires derating per Fig. 1: at 100°C case, max IO drops to ~18.5A; at 110°C, it falls to ~15.5A. Sustained 20A operation beyond 95°C risks thermal runaway due to VF temperature coefficient.
Does SBL2050CT require snubber circuits in 100kHz switch-mode applications?
No-its Schottky structure has no reverse recovery charge (Qrr ≈ 0), eliminating switching spikes that necessitate snubbers. However, junction capacitance (650pF) may interact with layout parasitics; proper gate-drive separation and minimized loop area remain essential for EMI control.
SBL2050CT 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):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 750 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 mA @ 50 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBL2050CT FAQ
1.How can I place an order for SBL2050CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL2050CT 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 SBL2050CT reliable?
The price and inventory of SBL2050CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL2050CT is usually 5 days.
3.What payment methods are accepted for SBL2050CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL2050CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL2050CT?
SBL2050CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL2050CT 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 SBL2050CT?
For technical support, including SBL2050CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL2050CT requirements.
6.How does Aetrix verify that SBL2050CT is sourced from the original manufacturer or authorized distributors?
All SBL2050CT 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 SBL2050CT meets industry standards.
7.What is the process for return or replacement of SBL2050CT?
All SBL2050CT units undergo pre-shipment inspection (PSI). If there is an issue with SBL2050CT, 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 SBL2050CT part is unused and in its original packaging.
Return procedure for SBL2050CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL2050CT Tags
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BAV99-7-F
Diodes Incorporated
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BAT54S-7-F
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BAV99LT1G
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BAT54S,215
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