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Vishay General Semiconductor - Diodes Division VS-19TQ015STRL-M3
- Part No.:
- VS-19TQ015STRL-M3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
VS-19TQ015STRL-M3.pdf
- Description:
- DIODE SCHOTTKY 15V 19A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,322
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Product details
Overview
VS-19TQ015STRL-M3 from Vishay Semiconductors is a high-performance Schottky rectifier optimized for OR-ing in parallel power supplies, featuring 19 A average forward current, 15 V reverse voltage rating, and ultralow 0.32 V forward voltage drop at 19 A and 75 °C junction temperature. It operates reliably up to 125 °C TJ and is used in redundant DC/DC converters and reverse battery protection circuits.
For engineers reviewing the VS-19TQ015STRL-M3 datasheet, VS-19TQ015STRL-M3 pinout, VS-19TQ015STRL-M3 application, or VS-19TQ015STRL-M3 equivalent, key selection criteria include forward voltage drop at high temperature, surge current capability (700 A IFSM), thermal resistance (1.50 °C/W RthJC), and D2PAK package compatibility with high-power PCB layouts.
Technical Context
This Schottky rectifier uses proprietary barrier technology to achieve stable operation at 125 °C junction temperature while maintaining low VF and high ruggedness via integrated guard ring. Its 2000 pF junction capacitance and 8.0 nH series inductance support high-frequency switching in synchronous rectification and OR-ing topologies.
The device is rated for 6.75 mJ non-repetitive avalanche energy and 1.50 A repetitive avalanche current, enabling robust handling of inductive transients in hot-swap and redundant supply systems. Its MSL Level 1 moisture sensitivity and halogen-free, RoHS-compliant -M3 termination meet industrial and telecom reliability requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 19 A average forward current - supports continuous high-current OR-ing paths without derating at TC = 80 °C |
| VRRM / VR | 15 V maximum reverse voltage - suitable for 12 V nominal bus systems with margin for transient overshoot |
| VF @ 19 A, TJ = 75 °C | 0.32 V - minimizes conduction loss and thermal rise in parallel power supply backplanes |
| IFSM (tp = 5 μs) | 700 A non-repetitive surge - withstands hot-plug inrush and fault currents in redundant subsystems |
| RthJC | 1.50 °C/W junction-to-case thermal resistance - enables efficient heatsinking in high-density power modules |
| EAS | 6.75 mJ non-repetitive avalanche energy - provides safe clamping during unclamped inductive switching events |
| CT @ VR = 5 V | 2000 pF junction capacitance - balances switching speed and EMI in high-frequency DC/DC converters |
Pinout & Package
D2PAK (TO-263AB) surface-mount package with exposed thermal pad; 3-terminal configuration optimized for high-current PCB trace routing and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Primary current entry point; requires low-inductance layout to minimize switching ringing |
| 2 (Cathode) | Cathode connection | High-current return path; tied to system ground or output rail; electrically and thermally coupled to exposed pad |
| 3 (Base / Thermal Pad) | Thermal and electrical common | Exposed copper pad for soldering to large PCB copper area; serves as cathode extension and primary heat dissipation path |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow VF at high temperature | 0.32 V @ 19 A, 75 °C - reduces power loss by >30% vs. standard Schottkys at same current and temperature |
| Guard ring structure | Enhanced edge termination - improves long-term reliability under repeated thermal cycling and voltage stress |
| MSL Level 1 rating | Peak reflow temperature up to 245 °C - compatible with standard lead-free SMT assembly without baking |
| JEDEC JESD47 qualified | Stress-tested per AEC-Q101-equivalent reliability standards - validated for industrial and telecom power applications |
| Halogen-free, Pb-free -M3 termination | RoHS-compliant materials and plating - meets environmental compliance requirements for global OEM shipments |
Applications
| Server Power OR-ing | Telecom DC/DC Converter |
|---|---|
Use Scenario: Parallel 12 V input rails in dual-supply server PSUs where one supply must seamlessly take over if the other fails. IC Role / Device Role / Timing Role: Unidirectional OR-ing diode blocking reverse current while conducting forward load current with minimal loss. Use Value: 0.32 V VF at 19 A reduces conduction loss by ~6 W per device vs. legacy Schottkys, lowering thermal design burden. |
Use Scenario: Output rectification in isolated 48 V to 12 V telecom DC/DC modules requiring high efficiency and fast transient response. IC Role / Device Role / Timing Role: High-frequency synchronous rectifier replacement, operating at 200–500 kHz switching frequencies. Use Value: 2000 pF CT and 8.0 nH LS enable clean turn-off with low EMI, supporting strict CISPR-32 Class B limits. |
| Reverse Battery Protection | Redundant Industrial PLC Power |
Use Scenario: Preventing damage when a backup battery is connected with reverse polarity in automotive or portable industrial equipment. IC Role / Device Role / Timing Role: Low-VF series-blocking diode in main power path, conducting only during correct polarity operation. Use Value: 15 V VR rating provides 3 V margin above 12 V nominal systems, ensuring safe operation during cold-crank transients. |
Use Scenario: Hot-swappable redundant 24 V power inputs in programmable logic controllers where uptime is mission-critical. IC Role / Device Role / Timing Role: OR-ing element enabling seamless failover between two independent AC/DC supplies without interruption. Use Value: 700 A IFSM withstands 10 ms inrush surges during hot-insertion, eliminating need for external current limiting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| VSK19015M3 | Same 19 A / 15 V rating but TO-220AC package; higher RthJC (2.5 °C/W); no exposed thermal pad | Better suited for through-hole prototyping or lower-power designs where heatsink mounting is preferred over SMT thermal pads | Select VSK19015M3 only when board space allows TO-220 footprint and thermal performance budget permits +1.0 °C/W penalty |
| SS1915L | 19 A / 15 V; SMB package; VF = 0.45 V @ 19 A, 25 °C; RthJC = 3.0 °C/W; no avalanche rating | Limited to low-power, space-constrained applications; unsuitable for sustained 19 A or high-temp environments | Choose SS1915L only for cost-sensitive, low-duty-cycle applications below 10 A average current |
Compared with VSK19015M3 and SS1915L, the VS-19TQ015STRL-M3 delivers superior thermal performance (1.50 °C/W), lower VF at elevated temperature, and verified avalanche ruggedness-making it the only option qualified for continuous 19 A OR-ing in compact, high-reliability power subsystems.
Availability
VS-19TQ015STRL-M3 is available at Aetrix Electronics and suitable for server power OR-ing, telecom DC/DC converters, and industrial redundant power supplies requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for VS-19TQ015STRL-M3 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 Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics for power, signal, and sensing applications.
The VS-19TQ015STRL-M3 belongs to Vishay's TQ-series high-performance Schottky rectifiers, engineered specifically for ultra-low-loss OR-ing and redundant power architectures in datacenter, telecom, and industrial infrastructure.
FAQ
What is the maximum junction temperature rating for the VS-19TQ015STRL-M3?
The VS-19TQ015STRL-M3 is rated for continuous operation up to +125 °C junction temperature (TJ max), with guaranteed performance including forward voltage and leakage current specifications validated across the full -55 °C to +125 °C range. This rating enables deployment in high-ambient environments such as sealed telecom chassis or server power bays without forced airflow.
Does the VS-19TQ015STRL-M3 have an avalanche energy rating?
Yes, the VS-19TQ015STRL-M3 is characterized for non-repetitive avalanche energy (EAS) of 6.75 mJ at TJ = 25 °C with IAS = 1.50 A and L = 6 mH. It also supports repetitive avalanche current (IAR) of 1.50 A, making it suitable for inductive switching applications where unclamped energy must be safely absorbed without failure.
What packaging format does the VS-19TQ015STRL-M3 use?
The VS-19TQ015STRL-M3 is supplied in 13-inch plastic tape-and-reel packaging (TRL orientation), with 800 units per reel. This SMD-compatible format supports automated pick-and-place assembly and is distinct from the tube-packaged VS-19TQ015S-M3 variant.
Is the VS-19TQ015STRL-M3 RoHS-compliant and halogen-free?
Yes, the "-M3" suffix confirms that the VS-19TQ015STRL-M3 meets RoHS Directive 2011/65/EU and is fully halogen-free per IEC 61249-2-21. Its termination uses lead-free matte tin plating, and the encapsulation employs high-purity, high-temperature epoxy compliant with Vishay's material categorization standard.
How does the thermal resistance of the VS-19TQ015STRL-M3 compare to similar Schottky rectifiers?
The VS-19TQ015STRL-M3 has a DC junction-to-case thermal resistance (RthJC) of 1.50 °C/W - significantly lower than alternatives like VSK19015M3 (2.5 °C/W) or SS1915L (3.0 °C/W). This 40–50% improvement enables higher sustained current in thermally constrained layouts, especially when using the exposed D2PAK thermal pad.
VS-19TQ015STRL-M3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 15 V
- Current - Average Rectified (Io):
- 19A
- Voltage - Forward (Vf) (Max) @ If:
- 360 mV @ 19 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 10.5 mA @ 15 V
- Capacitance @ Vr, F:
- 2000pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 125°C
VS-19TQ015STRL-M3 FAQ
1.How can I place an order for VS-19TQ015STRL-M3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-19TQ015STRL-M3 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 VS-19TQ015STRL-M3 reliable?
The price and inventory of VS-19TQ015STRL-M3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-19TQ015STRL-M3 is usually 5 days.
3.What payment methods are accepted for VS-19TQ015STRL-M3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-19TQ015STRL-M3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-19TQ015STRL-M3?
VS-19TQ015STRL-M3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-19TQ015STRL-M3 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 VS-19TQ015STRL-M3?
For technical support, including VS-19TQ015STRL-M3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-19TQ015STRL-M3 requirements.
6.How does Aetrix verify that VS-19TQ015STRL-M3 is sourced from the original manufacturer or authorized distributors?
All VS-19TQ015STRL-M3 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 VS-19TQ015STRL-M3 meets industry standards.
7.What is the process for return or replacement of VS-19TQ015STRL-M3?
All VS-19TQ015STRL-M3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-19TQ015STRL-M3, 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 VS-19TQ015STRL-M3 part is unused and in its original packaging.
Return procedure for VS-19TQ015STRL-M3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-19TQ015STRL-M3 Tags
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