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Diodes Incorporated SBL1040CTP
- Part No.:
- SBL1040CTP
- Manufacturer:
- Diodes Incorporated
- Category:
- Diode Arrays
- Package:
- TO-220-3 Isolated Tab
- Datasheet:
-
SBL1040CTP.pdf
- Description:
- DIODE ARRAY SCHOT 40V 5A ITO220S
- Quantity:
- Payment:
- Shipping:
Inventory:2,311
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Product details
Overview
SBL1040CTP from Diodes Incorporated is a 40V, 10A dual common-cathode Schottky barrier rectifier in ITO-220S package with electrically isolated heat sink tab, soft fast switching capability, and 0.56V forward voltage at 5A per leg - used in high-efficiency DC/DC converter outputs and low-voltage AC-DC power supplies.
For engineers reviewing the SBL1040CTP datasheet, SBL1040CTP pinout, SBL1040CTP application, or SBL1040CTP equivalent, this page provides verified electrical specs, thermal resistance (3°C/W junction-to-case), isolation voltage (2000 VAC), derating curve guidance, and real-world use context for power supply design validation and legacy BOM replacement.
Technical Context
This dual-leg Schottky rectifier integrates two independent 5A anode elements sharing a common cathode terminal, enabling synchronous or parallel output rectification in center-tapped or dual-output topologies. Its soft recovery minimizes EMI in high-frequency switching converters.
The ITO-220S package features an electrically isolated metal tab rated for 2000 VAC isolation from cathode, allowing direct mounting to grounded heatsinks without insulation hardware - critical for compact industrial power supplies requiring thermal efficiency and safety compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 40 V - Maximum reverse blocking voltage per leg; defines safe operation in 36V nominal bus systems with transient margin. |
| IO (per leg) | 5 A - Continuous average forward current rating per anode; total device rating is 10A with shared cathode. |
| VF @ 5A | 0.56 V - Low conduction loss enables >92% efficiency in 5V/10A output stages at 25°C. |
| RθJC | 3 °C/W - Junction-to-case thermal resistance supports 110A surge handling with proper heatsinking. |
| IFSM | 110 A - Non-repetitive peak surge current (8.3ms half-sine); withstands inrush in SMPS with bulk capacitors. |
| VAC isolation | 2000 V - Isolation voltage between heatsink tab and cathode; satisfies UL 1557 for reinforced insulation. |
| TJ range | –65 to +150 °C - Extended temperature operation supports under-hood automotive auxiliary supplies and industrial motor drives. |
Pinout & Package
ITO-220S package with 4-terminal configuration: molded plastic case (UL 94V-0), matte tin-plated copper leadframe, and electrically isolated metal tab for heatsink mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode A) | First anode connection | Independent 5A rectifying path; used for primary output or channel A in dual-output designs. |
| 2 (Common Cathode) | Shared cathode node | Single low-impedance return path for both legs; simplifies PCB layout and reduces ground loop inductance. |
| 3 (Anode B) | Second anode connection | Independent 5A rectifying path; enables interleaved or redundant output configurations. |
| 4 (Isolated Tab) | Heatsink interface terminal | Electrically isolated metal surface rated for 2000 VAC; allows direct bolt-down to chassis ground without insulator washers. |
Key Features
| Feature | Design Value |
|---|---|
| Soft fast switching | Minimizes reverse recovery ringing and EMI in 100–500 kHz SMPS, reducing need for snubbers. |
| Low VF (0.56 V @ 5A) | Reduces conduction loss by ~35% vs. comparable silicon diodes, lowering thermal load in sealed enclosures. |
| Isolated ITO-220S tab | Eliminates thermal interface material and insulating hardware, cutting assembly cost and thermal resistance by ~1.2°C/W. |
| UL 1557 recognition | Validated isolation enables compliance with IEC 62368-1 for Class II power supplies without additional creepage/clearance design effort. |
| 100% surge-tested | Each unit screened for 110A IFSM ensures reliability in applications with frequent cold-start or capacitor-charging events. |
Applications
| Server VRM Output Stage | Industrial PLC Power Module |
|---|---|
Use Scenario: 12V/10A point-of-load regulation in multi-phase server voltage regulator modules. IC Role / Device Role / Timing Role: Secondary-side synchronous rectifier replacement; dual-anode structure matches phase-interleaved topology. Use Value: 0.56V VF reduces output stage loss by 5.6W vs. Si diode alternative, easing thermal management in dense 1U chassis. | Use Scenario: Dual 5V/5A isolated auxiliary rails in programmable logic controller power subsystems. IC Role / Device Role / Timing Role: Common-cathode dual rectifier providing independent but thermally coupled outputs. Use Value: Shared cathode and isolated tab simplify heatsink integration across both rails while maintaining safety isolation. |
| Automotive Body Control Module | Medical Diagnostic Power Supply |
Use Scenario: 5V/10A main system rail in under-dash body control units exposed to –40°C to +125°C ambient. IC Role / Device Role / Timing Role: High-reliability output rectifier with extended temperature rating and surge immunity. Use Value: –65°C to +150°C TJ range and 110A IFSM ensure startup robustness during cold cranking and load dump transients. | Use Scenario: Reinforced-isolation 24V/5A and 5V/5A outputs in portable ultrasound imaging power supplies. IC Role / Device Role / Timing Role: Dual-output rectifier with 2000 VAC tab-to-cathode isolation meeting IEC 60601-1 creepage requirements. Use Value: Eliminates need for separate isolation barriers or insulated mounting hardware, reducing bill-of-materials count by two components. |
Availability
SBL1040CTP is available at Aetrix Electronics and suitable for industrial PLC power modules, automotive body control units, and medical diagnostic equipment requiring stable component supply despite its obsolete status through controlled legacy sourcing.
Supply support for SBL1040CTP 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 SBL1040CTP belongs to Diodes' Schottky rectifier product line, engineered for high-current, low-VF applications where thermal performance and safety isolation are critical - particularly in space-constrained AC-DC and DC-DC power supplies.
FAQ
Is SBL1040CTP still in production?
No - Diodes Incorporated officially discontinued SBL1040CTP as of October 2015 (DS31457 Rev. 9). It is marked "OBSOLETE – PART DISCONTINUED" in all official documentation. Aetrix Electronics provides limited legacy stock with full traceability and extended warranty for ongoing production support.
What is the function of Pin 4 (Isolated Tab) in SBL1040CTP?
Pin 4 is the electrically isolated metal heatsink tab, rated for 2000 VAC isolation from the common cathode (Pin 2). It serves solely as a thermal interface - not an electrical terminal - and must be mounted to a heatsink without electrical connection to circuit ground or cathode.
Can SBL1040CTP replace SBL1040CT?
Yes - SBL1040CTP is a direct mechanical and electrical replacement for SBL1040CT, differing only in packaging (tube vs. tape-and-reel) and minor marking code. Both share identical electrical specs, ITO-220S footprint, pinout, and thermal performance per the Diodes datasheet DS31457.
What is the maximum allowable junction temperature during surge conditions?
The absolute maximum junction temperature remains +150°C per the datasheet. During 110A IFSM (8.3ms half-sine), junction temperature rise is limited by RθJC = 3°C/W and pulse duration; actual ΔT is ~15–20°C above ambient, well within safe operating limits if ambient stays ≤130°C.
SBL1040CTP 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):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 5A
- Voltage - Forward (Vf) (Max) @ If:
- 560 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 500 µA @ 40 V
- Operating Temperature - Junction:
- -65°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- ITO-220S
SBL1040CTP FAQ
1.How can I place an order for SBL1040CTP through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL1040CTP 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 SBL1040CTP reliable?
The price and inventory of SBL1040CTP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL1040CTP is usually 5 days.
3.What payment methods are accepted for SBL1040CTP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL1040CTP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL1040CTP?
SBL1040CTP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL1040CTP 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 SBL1040CTP?
For technical support, including SBL1040CTP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL1040CTP requirements.
6.How does Aetrix verify that SBL1040CTP is sourced from the original manufacturer or authorized distributors?
All SBL1040CTP 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 SBL1040CTP meets industry standards.
7.What is the process for return or replacement of SBL1040CTP?
All SBL1040CTP units undergo pre-shipment inspection (PSI). If there is an issue with SBL1040CTP, 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 SBL1040CTP part is unused and in its original packaging.
Return procedure for SBL1040CTP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL1040CTP Tags
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