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Diodes Incorporated SBL2045CTP
- Part No.:
- SBL2045CTP
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Isolated Tab
- Datasheet:
-
SBL2045CTP.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A ITO220S
- Quantity:
- Payment:
- Shipping:
Inventory:2,756
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Product details
Overview
SBL2045CTP from Diodes Incorporated is a 20A dual-leg Schottky barrier rectifier in ITO-220S package, rated for 45V peak reverse voltage, 10A average forward current per leg, and 0.6V max forward voltage at 10A/25°C. It delivers soft fast switching and high-temperature stability for DC-DC converter output rectification.
For engineers reviewing the SBL2045CTP datasheet, SBL2045CTP pinout, SBL2045CTP application, or SBL2045CTP equivalent, this part supports high-efficiency secondary-side rectification where low conduction loss, thermal robustness up to +150°C junction temperature, and UL 1557 safety certification are required.
Technical Context
This dual-element Schottky rectifier integrates two independent 10A legs sharing a common cathode configuration, enabling synchronous or interleaved operation in center-tapped or full-wave topologies. Its patented Super Barrier technology achieves lower VF than standard Schottkys while maintaining low IR - 0.5mA max at 45V/25°C and 50mA at 45V/100°C.
Thermal resistance is 3°C/W junction-to-case when mounted on a specified heatsink (45mm × 20mm × 12mm black aluminum), supporting sustained 20A total device current with proper thermal management. The ITO-220S package features matte tin-plated copper leadframe and UL 94V-0 molded plastic housing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum repetitive reverse blocking voltage per leg; defines safe operating range in DC-DC flyback or forward converters. |
| IO (per leg) | 10 A - Continuous average forward current rating per element at TA = 25°C; derates linearly above 25°C ambient. |
| VF (max) | 0.60 V @ 10A, 25°C - Low conduction loss enables >92% efficiency in 12V-output SMPS designs. |
| IR (max) | 0.5 mA @ 45V, 25°C - Minimal leakage preserves light-load regulation and reduces standby power loss. |
| RθJC | 3 °C/W - Confirmed thermal resistance with heatsink mounting; enables compact thermal design for industrial power supplies. |
| TJ Range | –65°C to +150°C - Extended junction temperature capability supports operation in sealed enclosures or high-ambient environments. |
| UL Rating | UL 1557, E94661 - Certified isolation withstand of 2000 VAC for 1 minute; meets safety requirements for Class II isolated supplies. |
Pinout & Package
ITO-220S package: 3-terminal, single-in-line, insulated tab with common cathode configuration. Terminals are matte tin-finished copper; case material is UL 94V-0 molded plastic. Weight: 1.335 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode 1) | First anode connection | Input terminal for first rectifying leg; electrically isolated from tab and Pin 2. |
| Pin 2 (Anode 2) | Second anode connection | Input terminal for second rectifying leg; independent of Pin 1 and tab. |
| Tab (Cathode) | Common cathode | Shared output node for both legs; thermally conductive metal tab used for heatsinking and circuit return path. |
Key Features
| Feature | Design Value |
|---|---|
| Super Barrier Technology | Combines Schottky-like VF with improved IR and temperature stability vs. conventional Schottky diodes. |
| Soft, Fast Switching | Minimizes EMI generation during turn-off; eliminates need for snubbers in medium-frequency DC-DC converters (≤300 kHz). |
| High-Temp Stability | VF increases only marginally from 0.55 V @ 25°C to 0.60 V @ 125°C - critical for consistent performance in thermally constrained layouts. |
| UL 1557 Certification | Validated 2000 VAC isolation for 1 minute - satisfies reinforced insulation requirements in medical and industrial AC/DC adapters. |
Applications
| Server PSU Output Rectification | Industrial DC-DC Converter |
|---|---|
Use Scenario: Secondary-side synchronous rectification in 48V-input, 12V/20A output server power supplies. IC Role / Device Role / Timing Role: Dual-leg Schottky rectifier replacing MOSFETs in center-tapped topology; handles bidirectional current flow per phase. Use Value: Reduces conduction loss by 35% vs. standard 45V Schottkys, lowering thermal load on heatsink and improving system efficiency at full load. | Use Scenario: Freewheeling path in isolated 24V-to-5V flyback converter for PLC I/O modules. IC Role / Device Role / Timing Role: Common-cathode dual anode rectifier providing low-loss return path during transformer reset. Use Value: Soft recovery limits voltage overshoot across primary switch, eliminating need for clamping circuits and reducing component count. |
| Telecom Power Shelf | Automotive DC-DC Module |
Use Scenario: Output rectification in redundant 54V-input telecom shelf power supplies delivering ±12V rails. IC Role / Device Role / Timing Role: Dual-leg device used in parallel configuration per rail to meet 15A+ output current demand. Use Value: UL-certified isolation and –65°C to +150°C operation ensure reliability across wide environmental conditions in outdoor cabinets. | Use Scenario: 12V-to-3.3V buck converter in automotive infotainment head unit power tree. IC Role / Device Role / Timing Role: Freewheeling diode in high-side switch configuration; operates under engine cranking (–40°C) and under-hood hot soak (+125°C). Use Value: Stable VF across temperature prevents output droop during cold start and maintains regulation during thermal stress testing. |
Availability
SBL2045CTP is available at Aetrix Electronics and suitable for server power supplies, industrial DC-DC converters, telecom power shelves, and automotive infotainment modules requiring stable component supply despite its obsolete status.
Supply support for SBL2045CTP 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, manufacturing, and sales operations across Asia, Europe, and North America.
The SBL2045CTP belongs to Diodes' Super Barrier Rectifier (SBR®) product line, engineered specifically for high-efficiency, high-reliability secondary-side rectification in switched-mode power supplies operating from 5V to 48V outputs.
FAQ
Is SBL2045CTP still in production?
No - Diodes Incorporated officially discontinued SBL2045CTP as of October 2015, marking it "OBSOLETE – PART DISCONTINUED" in datasheet DS31411 Rev. 8-4. Aetrix Electronics provides remaining genuine stock with full traceability and extended lifecycle support for legacy designs.
What is the pin configuration for SBL2045CTP?
SBL2045CTP uses a 3-terminal ITO-220S package with Pins 1 and 2 as independent anodes and the metal tab serving as the common cathode. The tab is electrically connected to the cathode and must be isolated from other potentials unless used as circuit ground or heatsink return.
Can SBL2045CTP replace standard Schottky diodes like SB2040CT?
Yes - SBL2045CTP offers lower VF (0.60 V vs. ~0.75 V) and superior high-temperature leakage performance vs. SB2040CT. However, its 45V VRRM is lower than SB2040CT's 40V rating, and its Super Barrier architecture requires verification of soft-switching behavior in high-dI/dt applications.
Does SBL2045CTP require a heatsink?
Yes - at full 20A total current, thermal resistance of 3°C/W demands active or substantial passive heatsinking. Without heatsink, derating begins above ~45°C ambient; datasheet Fig. 3 shows usable current drops to ~7A at 100°C ambient with no heatsink.
SBL2045CTP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- TO-220-3 Isolated Tab
- Packaging:
- Tube
- 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:
- 600 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220S
SBL2045CTP FAQ
1.How can I place an order for SBL2045CTP through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL2045CTP 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 SBL2045CTP reliable?
The price and inventory of SBL2045CTP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL2045CTP is usually 5 days.
3.What payment methods are accepted for SBL2045CTP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL2045CTP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL2045CTP?
SBL2045CTP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL2045CTP 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 SBL2045CTP?
For technical support, including SBL2045CTP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL2045CTP requirements.
6.How does Aetrix verify that SBL2045CTP is sourced from the original manufacturer or authorized distributors?
All SBL2045CTP 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 SBL2045CTP meets industry standards.
7.What is the process for return or replacement of SBL2045CTP?
All SBL2045CTP units undergo pre-shipment inspection (PSI). If there is an issue with SBL2045CTP, 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 SBL2045CTP part is unused and in its original packaging.
Return procedure for SBL2045CTP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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