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Vishay General Semiconductor - Diodes Division SBL25L20CT-E3/45
- Part No.:
- SBL25L20CT-E3/45
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-220-3
- Datasheet:
-
SBL25L20CT-E3/45.pdf
- Description:
- DIODE ARR SCHOT 20V 12.5A TO2203
- Quantity:
- Payment:
- Shipping:
Inventory:2,519
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Product details
Overview
SBL25L20CT-E3/45 from Vishay General Semiconductor is a dual common-cathode Schottky rectifier optimized for low-voltage, high-frequency power conversion. It delivers 12.5 A average forward current per diode, 20 V maximum reverse voltage, and a low 0.39 V forward voltage at 12.5 A and 125 °C - enabling high-efficiency operation in DC-DC converters and OR-ing circuits.
For engineers reviewing the SBL25L20CT-E3/45 datasheet, SBL25L20CT-E3/45 pinout, SBL25L20CT-E3/45 application, or SBL25L20CT-E3/45 equivalent, key selection criteria include its TO-220AB package thermal resistance (1.5 °C/W junction-to-case), 180 A peak surge rating, RoHS-compliant matte tin plating, and suitability for automotive-grade designs when specified with HE3 suffix.
Technical Context
This dual Schottky rectifier integrates two independent anodes sharing a common cathode terminal, supporting synchronous rectification and redundant power path configurations. Its low VF and fast switching enable minimal conduction loss in buck-derived topologies and freewheeling paths where reverse recovery is critical.
The device operates across –55 °C to +150 °C junction temperature range and meets J-STD-020 MSL Level 1 for reflow compatibility. Thermal performance is defined per diode, with RθJC = 1.5 °C/W (TO-220AB), enabling direct heatsink mounting via pin 2 (cathode tab) without isolation hardware in non-isolated applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 20 V - supports 12 V and 5 V rail rectification with margin against transient overshoot |
| IF(AV) per diode | 12.5 A - enables continuous 25 A total output in dual-phase or parallel-path designs |
| VF @ 12.5 A, 125 °C | 0.39 V - reduces conduction loss to ~4.9 W per diode at full load, improving thermal headroom |
| IFSM | 180 A - withstands inrush and short-circuit surge events in SMPS and battery protection circuits |
| TJ max. | +150 °C - allows operation in high-ambient environments such as enclosed industrial power supplies |
| RθJC per diode | 1.5 °C/W - permits direct heatsinking to chassis or PCB copper for thermal management without insulators |
Pinout & Package
Package: TO-220AB - thermally enhanced plastic case with isolated mounting hole, matte tin-plated leads, UL 94V-0 rated epoxy, and 10 in-lb maximum mounting torque.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode 1 | Input terminal for first diode leg; connects to high-side switch node in buck converter |
| Pin 2 | Common Cathode (K) | Shared output terminal; electrically connected to metal tab for low-inductance heatsinking |
| Pin 3 | Anode 2 | Input terminal for second diode leg; used for OR-ing, redundancy, or interleaved phase |
Key Features
| Feature | Design Value |
|---|---|
| Low VF Schottky architecture | 0.39 V forward drop at 12.5 A/125 °C minimizes I²R losses and improves system efficiency >92% in 12 V → 5 V converters |
| Dual common-cathode configuration | Enables compact dual-path rectification without external cathode tie, reducing layout area and parasitic inductance |
| High surge capability | 180 A non-repetitive peak current supports robust startup and fault handling in 48 V telecom and server PSUs |
| RoHS-compliant & whisker-tested | E3 suffix meets JESD201 Class 1A tin whisker resistance, qualifying for consumer and industrial long-life deployments |
Applications
| Switching Mode Power Supply Output Rectification | OR-ing Diode for Redundant Power Supplies |
|---|---|
Use Scenario: Used in secondary-side rectification of 12 V or 5 V outputs in AC-DC adapters and board-mounted DC-DC modules. IC Role / Device Role / Timing Role: Dual Schottky rectifier providing low-loss unidirectional current flow from transformer or inductor to output capacitor. Use Value: 0.39 V VF at full load reduces heat generation by ~35% vs. standard silicon diodes, allowing smaller heatsinks and higher power density. | Use Scenario: Placed in parallel power supply branches to prevent backfeed and ensure seamless switchover during failure. IC Role / Device Role / Timing Role: Common-cathode dual diode isolates each supply while sharing a single output bus connection. Use Value: Matched VF between anodes ensures balanced current sharing and eliminates need for external balancing resistors. |
| Freewheeling Diode in Synchronous Buck Converters | Polarity Protection in 12 V Automotive ECUs |
Use Scenario: Integrated into buck regulator designs where high-side MOSFET switching requires low-loss flyback path. IC Role / Device Role / Timing Role: Freewheeling path for inductor current during high-side FET off-time; operates at switching frequencies up to 1 MHz. Use Value: Near-zero reverse recovery time eliminates switching loss spikes and EMI associated with PN diodes. | Use Scenario: Installed in-line on battery input of engine control units to block reverse polarity connection during service. IC Role / Device Role / Timing Role: Reverse-biased blocking element that clamps fault current only during incorrect battery hookup. Use Value: 20 V VRRM provides sufficient margin above 14 V nominal automotive systems, while 180 A IFSM survives jump-start transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay SBL25L20CTHE3/45 | AEC-Q101 qualified; JESD201 Class 2 whisker test; identical electrical specs and TO-220AB package | Required for automotive under-hood applications where reliability validation is mandated | Select when automotive qualification and extended whisker resistance are mandatory; otherwise SBL25L20CT-E3/45 suffices for industrial/consumer use |
| ON Semiconductor MBR2520CT | Same 20 V VRRM and 12.5 A IF(AV)/diode, but VF = 0.52 V @ 12.5 A/25 °C; RθJC = 2.0 °C/W | Higher conduction loss and reduced thermal performance limit use in high-density or high-ambient designs | Acceptable for cost-sensitive, lower-power applications where 0.13 V higher VF and 0.5 °C/W higher thermal resistance are tolerable |
Compared with SBL25L20CTHE3/45 and MBR2520CT, the SBL25L20CT-E3/45 offers optimal balance of low VF (0.39 V), superior thermal resistance (1.5 °C/W), and consumer-grade qualification - making it ideal for space-constrained industrial power supplies where automotive certification is unnecessary.
Availability
SBL25L20CT-E3/45 is available at Aetrix Electronics and suitable for switching mode power supplies, OR-ing diode networks, and automotive polarity protection circuits requiring stable component supply and consistent TO-220AB mechanical fit.
Supply support for SBL25L20CT-E3/45 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
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on power efficiency and reliability.
The SBL25LxxCT series was developed for high-current, low-voltage DC-DC conversion in computing, telecom, and industrial power systems - prioritizing low forward voltage, surge robustness, and thermal performance in standard through-hole packages.
FAQ
What is the maximum junction temperature rating for the SBL25L20CT-E3/45?
The SBL25L20CT-E3/45 has a maximum operating junction temperature of +150 °C, verified per the Vishay datasheet revision 08-Apr-08. This rating allows reliable operation in enclosed power supplies and automotive under-dash environments where ambient temperatures exceed 85 °C. Derating curves confirm usable current capacity down to 10 A per diode at TC = 100 °C, ensuring design margin for thermal transients.
Is the SBL25L20CT-E3/45 pin-compatible with other TO-220AB dual Schottky rectifiers?
Yes - the SBL25L20CT-E3/45 uses standard TO-220AB pinout (Anode1–Cathode–Anode2) and matches mechanical dimensions per Vishay's outline drawing. It is mechanically interchangeable with MBR2520CT and STPS2520CT, though electrical differences (e.g., VF, RθJC) must be validated in circuit. No PCB changes are required for footprint replacement.
Does the SBL25L20CT-E3/45 meet RoHS and lead-free soldering requirements?
Yes - the SBL25L20CT-E3/45 complies with RoHS Directive 2011/65/EU and features matte tin-plated leads compatible with J-STD-002 and JESD22-B102 soldering standards. The E3 suffix confirms JESD201 Class 1A whisker testing, and the device supports lead-free reflow profiles up to 245 °C peak for 40 seconds, per J-STD-020 MSL Level 1.
What is the typical thermal resistance from junction to case for the SBL25L20CT-E3/45?
The SBL25L20CT-E3/45 exhibits a typical junction-to-case thermal resistance (RθJC) of 1.5 °C/W per diode, measured under standard test conditions per Vishay Document Number 88731. This value applies specifically to the TO-220AB package variant and enables efficient heat transfer to an external heatsink mounted on the cathode tab (Pin 2), supporting sustained 12.5 A operation at TC ≤ 95 °C.
Can the SBL25L20CT-E3/45 be used in automotive applications?
The SBL25L20CT-E3/45 is rated for industrial and consumer use; for automotive applications, Vishay specifies the HE3-suffix variant (SBL25L20CTHE3/45), which is AEC-Q101 qualified and passes JESD201 Class 2 whisker testing. While the SBL25L20CT-E3/45 shares identical electrical parameters, it lacks formal automotive qualification - use SBL25L20CTHE3/45 where compliance with automotive reliability standards is mandatory.
SBL25L20CT-E3/45 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Obsolete
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 20 V
- Current - Average Rectified (Io) (per Diode):
- 12.5A
- Voltage - Forward (Vf) (Max) @ If:
- 490 mV @ 12.5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 900 µA @ 20 V
- Operating Temperature - Junction:
- -55°C ~ 150°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
SBL25L20CT-E3/45 FAQ
1.How can I place an order for SBL25L20CT-E3/45 through Aetrix?
Please submit a Request for Quotation (RFQ) for SBL25L20CT-E3/45 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 SBL25L20CT-E3/45 reliable?
The price and inventory of SBL25L20CT-E3/45 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SBL25L20CT-E3/45 is usually 5 days.
3.What payment methods are accepted for SBL25L20CT-E3/45?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SBL25L20CT-E3/45 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SBL25L20CT-E3/45?
SBL25L20CT-E3/45 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SBL25L20CT-E3/45 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 SBL25L20CT-E3/45?
For technical support, including SBL25L20CT-E3/45 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SBL25L20CT-E3/45 requirements.
6.How does Aetrix verify that SBL25L20CT-E3/45 is sourced from the original manufacturer or authorized distributors?
All SBL25L20CT-E3/45 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 SBL25L20CT-E3/45 meets industry standards.
7.What is the process for return or replacement of SBL25L20CT-E3/45?
All SBL25L20CT-E3/45 units undergo pre-shipment inspection (PSI). If there is an issue with SBL25L20CT-E3/45, 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 SBL25L20CT-E3/45 part is unused and in its original packaging.
Return procedure for SBL25L20CT-E3/45:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SBL25L20CT-E3/45 Tags
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