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Diodes Incorporated SBL1045CT
- Part No.:
- SBL1045CT
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBL1045CT.pdf
- Description:
- DIODE ARR SCHOTT 45V 10A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:4,168
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Product details
Overview
SBL1045CT from Diodes Incorporated is a 10A dual common-cathode Schottky barrier rectifier in TO-220AB package, rated for 45V peak repetitive reverse voltage, 0.70V forward voltage drop at 5.0A/25°C, and 175A non-repetitive surge current - designed for low-voltage, high-frequency DC-DC converter output rectification and polarity protection in industrial power supplies.
For engineers reviewing the SBL1045CT datasheet, SBL1045CT pinout, SBL1045CT application, or SBL1045CT equivalent, key selection criteria include its 45V VRRM rating, dual common-cathode configuration, 5.5°C/W junction-to-case thermal resistance, and compatibility with heatsink-mounted 10A continuous operation at TC = 95°C.
Technical Context
This dual-element Schottky rectifier integrates two independent anode terminals (Pins 1 and 3) sharing a common cathode (Pin 2), enabling synchronous or independent half-wave rectification paths. Its guard ring die construction enhances transient immunity without external TVS components.
Designed for switching frequencies up to several hundred kHz, it delivers low conduction loss due to its 0.70V VFM and 450pF typical junction capacitance at 4V reverse bias - critical for minimizing switching node ringing and EMI in flyback and forward converters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 45 V - Maximum allowable repetitive reverse voltage before breakdown; sets upper limit for input/output voltage differential in buck-derived topologies. |
| IO @ TC=95°C | 10 A - Continuous average forward current per element when case temperature is held at 95°C via heatsink; defines thermal design baseline. |
| VFM @ IF=5A, 25°C | 0.70 V - Forward voltage drop per diode at mid-load; directly determines conduction loss (3.5W per element at 5A). |
| IFSM (8.3ms) | 175 A - Peak non-repetitive surge current capability; supports inrush tolerance during hot-plug or capacitor charging events. |
| RθJC | 5.5 °C/W - Thermal resistance from junction to case; enables calculation of maximum junction temperature rise under given power dissipation and heatsink performance. |
| Cj @ VR=4V, 1MHz | 450 pF - Junction capacitance per element; impacts high-frequency switching losses and gate drive interaction in synchronous rectifier circuits. |
Pinout & Package
Package: TO-220AB - Molded plastic case with integral metal tab (electrically connected to Pin 2/cathode), UL 94V-0 rated, lead-free and RoHS compliant. Mounting requires insulating washer if tab is not used as heatsink ground.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first rectifying path; electrically isolated from Pin 3 and Pin 2; connects to transformer secondary or input rail. |
| Pin 2 | Common Cathode | Shared output node for both diodes; tab-connected and thermally coupled to heatsink; must be referenced to system ground or output return. |
| Pin 3 | Anode 2 | Input terminal for second independent rectifying path; fully isolated from Pin 1; supports dual-output or interleaved designs. |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring die construction | Improves transient voltage immunity without requiring external clamping devices, reducing BOM count in industrial power supplies. |
| Dual common-cathode configuration | Enables compact dual-output DC-DC conversion or parallel operation with shared output filtering, minimizing PCB layout area. |
| Low forward voltage drop (0.70V) | Reduces conduction loss by ~30% compared to standard silicon rectifiers at 5A, improving efficiency in 12V and 24V systems. |
| High surge capability (175A) | Withstands repeated cold-start surges in motor drives and UPS systems without degradation, extending service life under dynamic loads. |
Applications
| Industrial AC-DC Power Supplies | Telecom DC-DC Converters |
|---|---|
Use Scenario: Secondary-side rectification in 48V-input telecom rectifiers delivering 12V/24V outputs. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss, high-efficiency output stage with shared cathode return path. Use Value: Enables >92% full-load efficiency at 200kHz switching frequency while maintaining <50°C junction rise under forced-air cooling. | Use Scenario: Output rectification in isolated 1/4-brick DC-DC modules for base station RF power amplifiers. IC Role / Device Role / Timing Role: High-current, low-VF rectifier handling 10A continuous load with minimal thermal derating. Use Value: Reduces heat sink volume by 35% versus comparable 1N5822-based designs due to lower RθJC and VFM. |
| Automotive Body Control Modules | LED Driver Power Stages |
Use Scenario: Polarity protection and reverse-battery safeguard in 12V/24V BCM power inputs. IC Role / Device Role / Timing Role: Common-cathode dual diode configured as OR-ing device with redundant supply inputs. Use Value: Withstands 120V load-dump transients per ISO 7637-2 thanks to guard ring structure and 45V VRRM margin. | Use Scenario: Free-wheeling path in constant-current LED drivers for street lighting and signage. IC Role / Device Role / Timing Role: Fast-recovery Schottky element conducting inductor current during MOSFET off-time. Use Value: Limits voltage overshoot to <1.2× VIN during turn-off, eliminating need for snubbers in 300kHz PWM dimming circuits. |
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-10BQ045 | Same 45V VRRM, 10A IO, TO-220AC package (single-anode), higher VFM (0.72V @ 5A) | Lacks dual-anode flexibility; requires separate cathode routing for dual-path designs | Preferred when single-output topology simplifies layout and cost sensitivity favors Vishay's volume pricing |
| ON Semiconductor MBR1045CT | Identical pinout, 45V VRRM, 10A IO, but 0.75V VFM and 6.0°C/W RθJC | Higher thermal resistance limits sustained 10A operation without enhanced heatsinking | Acceptable where ambient temperature remains <50°C and board-level thermal management is robust |
Compared with VS-10BQ045 and MBR1045CT, the SBL1045CT offers superior thermal performance (5.5°C/W) and lower forward drop (0.70V), making it optimal for space-constrained, high-efficiency 10A dual-rail applications where thermal headroom is limited.
Availability
SBL1045CT is available at Aetrix Electronics and suitable for industrial AC-DC power supplies, telecom DC-DC converters, and automotive body control modules requiring stable component supply and long-term manufacturability assurance.
Supply support for SBL1045CT 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-reliability power management, signal integrity, and protection solutions for industrial, computing, and communications markets.
The SBL10xxCT series belongs to Diodes' high-current Schottky rectifier product line, engineered specifically for efficiency-critical secondary-side rectification and polarity protection in compact, thermally constrained power systems.
FAQ
Is the metal tab on the SBL1045CT electrically connected to any pin?
Yes - the metal tab is internally connected to Pin 2 (common cathode). This provides both thermal conduction to the heatsink and electrical grounding of the cathode node. Insulating hardware must be used if the heatsink is not referenced to the cathode potential.
Can SBL1045CT be used in parallel for higher current capacity?
No - paralleling SBL1045CT units is not recommended due to mismatched forward voltage characteristics between devices, which causes current imbalance and thermal runaway. For >10A applications, select a higher-rated part such as SBL2045CT or use active current-sharing circuitry.
What is the maximum operating temperature for continuous 10A operation?
Continuous 10A operation is rated at TC = 95°C - meaning the case temperature (measured at the mounting surface near Pin 2) must not exceed 95°C. At ambient temperatures above 55°C, forced-air cooling or a minimum 15 cm² heatsink is required to maintain this limit.
Does SBL1045CT meet automotive AEC-Q101 qualification?
No - SBL1045CT is not AEC-Q101 qualified. It is rated for industrial temperature range (–65°C to +150°C), but lacks the stress testing, failure analysis, and traceability documentation required for automotive-grade deployment. For AEC-Q101 applications, consider Diodes' APx1045CT series.
SBL1045CT 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):
- 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:
- 500 µA @ 45 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBL1045CT FAQ
1.How can I place an order for SBL1045CT through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1045CT 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 SBL1045CT reliable?
The price and inventory of SBL1045CT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1045CT is usually 5 days.
3.What payment methods are accepted for SBL1045CT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1045CT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1045CT?
SBL1045CT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1045CT 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 SBL1045CT?
For technical support, including SBL1045CT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1045CT requirements.
6.How does Aetrix verify that SBL1045CT is sourced from the original manufacturer or authorized distributors?
All SBL1045CT 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 SBL1045CT meets industry standards.
7.What is the process for return or replacement of SBL1045CT?
All SBL1045CT units undergo pre-shipment inspection (PSI). If there is an issue with SBL1045CT, 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 SBL1045CT part is unused and in its original packaging.
Return procedure for SBL1045CT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL1045CT Tags
-
BAV99-7-F
Diodes Incorporated
-
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
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BAV99LT1G
onsemi
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BAT54S,215
Nexperia USA Inc.
-
BAS40-04LT1G
onsemi
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MMBD1503-TP
Micro Commercial Co
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BAV99WT1G
onsemi
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