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Vishay General Semiconductor - Diodes Division VS-12TQ035-N3
- Part No.:
- VS-12TQ035-N3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
VS-12TQ035-N3.pdf
- Description:
- DIODE SCHOTTKY 35V 15A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:2,570
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Product details
Overview
VS-12TQ035-N3 from Vishay Semiconductors is a 35 V, 15 A average current Schottky rectifier in TO-220AC package, featuring 0.50 V forward voltage at 15 A and 125 °C junction temperature, 70 mA max reverse leakage at 125 °C, 150 °C max junction temperature, and halogen-free RoHS-compliant construction. It serves as a freewheeling or reverse-battery-protection diode in DC/DC converters and switching power supplies.
For engineers reviewing the VS-12TQ035-N3 datasheet, VS-12TQ035-N3 pinout, VS-12TQ035-N3 application, or VS-12TQ035-N3 equivalent, key selection criteria include low VF at high temperature, ruggedness via guard ring design, avalanche energy rating (16 mJ), thermal resistance (2.0 °C/W), and halogen-free compliance for industrial and automotive-grade designs.
Technical Context
This Schottky rectifier uses proprietary barrier technology enabling stable operation up to 150 °C junction temperature while maintaining low forward voltage (0.50 V @ 15 A, 125 °C) and moderate reverse leakage (70 mA @ 125 °C). Its TO-220AC package provides direct heatsink mounting with 0.50 °C/W typical case-to-heatsink thermal resistance.
The device delivers 990 A non-repetitive surge current capability (5 μs sine) and 16 mJ unclamped inductive switching energy rating. Its 900 pF junction capacitance at 5 V and 10,000 V/μs dV/dt support high-frequency switching applications without parasitic oscillation concerns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 15 A average forward current - supports continuous conduction mode in 50 W–150 W SMPS outputs |
| VR | 35 V DC reverse voltage - suitable for 24 V system reverse polarity protection and 12 V/24 V buck-derived rails |
| VF @ 15 A, 125 °C | 0.50 V - reduces conduction loss by ~30 % vs. standard silicon diodes, lowering thermal load on heatsink |
| IRM @ 125 °C | 70 mA - enables reliable operation in high-temperature environments without thermal runaway risk |
| RthJC | 2.0 °C/W - allows precise junction temperature estimation under DC or pulsed loads using case temperature measurement |
| EAS | 16 mJ - withstands unclamped inductive turn-off events in flyback or synchronous rectifier circuits |
| dV/dt | 10,000 V/μs - prevents false triggering in fast-switching topologies with steep voltage transients |
Pinout & Package
VS-12TQ035-N3 is housed in a TO-220AC package with isolated tab (cathode-connected metal base), optimized for mechanical robustness and thermal transfer. The plastic body conforms to JEDEC outline TO-220AC per document 95221, with 2 g mass and 6–12 kgf·cm mounting torque specification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Main cathode connection; electrically tied to metal tab - requires insulated mounting when tab is not used as heatsink return |
| 2 | Cathode | Second cathode lead - paralleled internally with Pin 1 for lower inductance and higher current sharing |
| 3 | Anode | Single anode terminal - carries full forward current; positioned opposite cathode leads for optimal PCB layout symmetry |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Enhances ruggedness against edge breakdown and improves long-term reliability under repetitive surge stress |
| Halogen-free epoxy encapsulation (-N3) | Meets IEC 61249-2-21 definition - eliminates brominated flame retardants for safer end-of-life processing |
| 150 °C TJ max rating | Enables operation in sealed enclosures or high-ambient environments without derating below 15 A average current |
| High-purity high-temp epoxy | Provides superior moisture resistance and mechanical strength versus standard epoxies - validated per JEDEC JESD47 |
| Low series inductance (8.0 nH) | Minimizes voltage overshoot during fast di/dt transitions - critical for EMI-sensitive 300 kHz+ switching converters |
Applications
| Server Power Supply Output Rectification | Automotive Reverse Battery Protection |
|---|---|
|
Use Scenario: High-efficiency 12 V output stage in 80 PLUS Titanium server PSUs operating at 400 kHz with forced-air cooling. IC Role / Device Role / Timing Role: Freewheeling Schottky rectifier replacing MOSFET synchronous rectifier where gate drive complexity is undesirable. Use Value: 0.50 V VF at 125 °C reduces conduction loss by 1.5 W vs. legacy 0.65 V diodes, directly improving efficiency and easing thermal management. |
Use Scenario: 24 V battery-powered ADAS ECU requiring fail-safe reverse polarity connection immunity. IC Role / Device Role / Timing Role: Reverse-battery protection diode placed in series with main power input rail. Use Value: 70 mA IRM at 125 °C ensures minimal standby power loss (<1.7 mW) while surviving underhood temperatures up to 125 °C ambient. |
| Industrial DC/DC Converter Freewheeling | Telecom Brick Rectification |
|
Use Scenario: 48 V input, 5 V/15 A isolated flyback converter in programmable logic controller (PLC) power module. IC Role / Device Role / Timing Role: Secondary-side freewheeling diode handling peak currents up to 30 A during transient load steps. Use Value: 990 A IFSM (5 μs) and 16 mJ EAS enable survival of worst-case unclamped inductive spikes without degradation. |
Use Scenario: Output rectification in 277 V AC–48 V DC telecom rectifier brick with 100 kHz LLC resonance. IC Role / Device Role / Timing Role: Low-VF output rectifier minimizing voltage drop across 48 V bus under full 15 A load. Use Value: 900 pF CT at 5 V and 10,000 V/μs dV/dt prevent capacitive coupling noise and false turn-on in high dv/dt environments. |
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-12TQ035PbF | Same electrical specs and TO-220AC package, but Pb-free RoHS-compliant only (not halogen-free); contains brominated flame retardants | Acceptable where halogen-free requirement is absent (e.g., non-EU industrial equipment) | Select VS-12TQ035PbF if RoHS without halogen-free compliance suffices and cost sensitivity is higher |
| ON Semiconductor MBR1535CT | TO-220AB dual common-cathode configuration; 0.57 V VF @ 15 A, 25 °C; no specified EAS rating; 125 °C TJ max | Suitable for dual-output or parallel-cathode layouts; lacks 150 °C rating and avalanche energy spec | Choose MBR1535CT only for space-constrained dual-rail designs where 150 °C operation and 16 mJ EAS are not required |
Compared with VS-12TQ035PbF, the VS-12TQ035-N3 adds halogen-free compliance without sacrificing electrical performance; compared with MBR1535CT, it offers higher temperature capability, guaranteed avalanche energy, and lower VF at elevated temperature - making it preferable for thermally demanding or safety-critical applications.
Availability
VS-12TQ035-N3 is available at Aetrix Electronics and suitable for switching power supplies, DC/DC converters, reverse battery protection circuits, and freewheeling applications requiring stable component supply, halogen-free compliance, and 150 °C junction temperature capability.
Supply support for VS-12TQ035-N3 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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in power semiconductors and precision resistive solutions.
The VS-12TQ035-N3 belongs to Vishay's high-current Schottky rectifier product line, engineered for high-efficiency, high-temperature power conversion in industrial, computing, and automotive systems where low VF and ruggedness are critical.
FAQ
What is the maximum junction temperature rating for VS-12TQ035-N3?
The VS-12TQ035-N3 has a maximum junction temperature (TJ max) of 150 °C, verified per JEDEC JESD47 qualification. This rating enables continuous operation at full 15 A average current under case temperatures up to 120 °C, provided thermal resistance to heatsink remains within design limits. The VS-12TQ035-N3 maintains stable forward voltage and leakage characteristics across this full range.
Does VS-12TQ035-N3 have a guard ring structure?
Yes, the VS-12TQ035-N3 incorporates a guard ring structure explicitly stated in its datasheet to enhance ruggedness and long-term reliability. This feature mitigates edge breakdown under high-voltage stress and improves survivability during repetitive surge events - a key differentiator from basic Schottky diodes without such protection.
What does the "-N3" suffix indicate in VS-12TQ035-N3?
The "-N3" suffix denotes halogen-free, RoHS-compliant, and totally lead (Pb)-free construction per IEC 61249-2-21. Unlike the PbF variant, VS-12TQ035-N3 contains no brominated flame retardants and uses alternative epoxy formulations - essential for compliance in EU automotive and industrial markets with strict halogen restrictions.
Is VS-12TQ035-N3 suitable for reverse battery protection in automotive applications?
Yes, the VS-12TQ035-N3 is widely deployed for reverse battery protection in automotive ECUs and infotainment systems. Its 70 mA reverse leakage at 125 °C, 35 V VR rating, and 150 °C TJ max ensure low standby loss and robust operation under hood temperatures. The TO-220AC package allows direct heatsinking to chassis ground when properly isolated.
What is the thermal resistance from junction to case (RthJC) for VS-12TQ035-N3?
The VS-12TQ035-N3 has a maximum thermal resistance of 2.0 °C/W from junction to case under DC operation, as specified in the Absolute Maximum Ratings table. This value is measured with proper mounting torque (6–12 kgf·cm) and enables accurate junction temperature prediction using case temperature monitoring - critical for thermal design validation of the VS-12TQ035-N3.
VS-12TQ035-N3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-220-2
- Packaging:
- Tube
- Product Status:
- Obsolete
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 35 V
- Current - Average Rectified (Io):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 560 mV @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 50 µA @ 100 V
- Capacitance @ Vr, F:
- 900pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -55°C ~ 150°C
VS-12TQ035-N3 FAQ
1.How can I place an order for VS-12TQ035-N3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-12TQ035-N3 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-12TQ035-N3 reliable?
The price and inventory of VS-12TQ035-N3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-12TQ035-N3 is usually 5 days.
3.What payment methods are accepted for VS-12TQ035-N3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-12TQ035-N3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-12TQ035-N3?
VS-12TQ035-N3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-12TQ035-N3 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-12TQ035-N3?
For technical support, including VS-12TQ035-N3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-12TQ035-N3 requirements.
6.How does Aetrix verify that VS-12TQ035-N3 is sourced from the original manufacturer or authorized distributors?
All VS-12TQ035-N3 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-12TQ035-N3 meets industry standards.
7.What is the process for return or replacement of VS-12TQ035-N3?
All VS-12TQ035-N3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-12TQ035-N3, 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-12TQ035-N3 part is unused and in its original packaging.
Return procedure for VS-12TQ035-N3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-12TQ035-N3 Tags
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