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Vishay General Semiconductor - Diodes Division VS-20CTQ035STRL-M3
- Part No.:
- VS-20CTQ035STRL-M3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
VS-20CTQ035STRL-M3.pdf
- Description:
- DIODE ARR SCHOTT 35V 10A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,180
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Product details
Overview
VS-20CTQ035STRL-M3 from Vishay Semiconductors is a high-performance dual-anode Schottky rectifier in D2PAK (TO-263AB) package, configured as a center-tapped common-cathode device rated for 35 V reverse voltage, 2 × 10 A average forward current per leg, and 0.57 V forward voltage at 10 A and 125 °C. It serves as a freewheeling or output rectifier in high-frequency DC/DC converters and synchronous rectification circuits requiring low conduction loss and 175 °C junction operation.
For engineers reviewing the VS-20CTQ035STRL-M3 datasheet, VS-20CTQ035STRL-M3 pinout, VS-20CTQ035STRL-M3 application, or VS-20CTQ035STRL-M3 equivalent, key selection criteria include its 35 V VR, 20 A total average current capability, 0.57 V VF at elevated temperature, 13 mJ unclamped avalanche energy rating, and D2PAK thermal performance with RthJC = 3.25 °C/W per leg.
Technical Context
This device integrates two independent Schottky die in a single D2PAK package with shared cathode terminal, enabling center-tap topology support without external interconnection. Its proprietary barrier technology minimizes reverse leakage up to 175 °C, and guard ring design enhances ruggedness against transient overstress.
The VS-20CTQ035STRL-M3 operates with low series inductance (8.0 nH) and high dV/dt immunity (10,000 V/μs), making it suitable for fast-switching topologies such as phase-shifted full-bridge and active clamp forward converters where diode recovery behavior critically impacts efficiency and EMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR | 35 V - Maximum DC reverse blocking voltage per leg; defines safe operating range in buck-derived or center-tap secondary rectification. |
| IF(AV) | 2 × 10 A - Average forward current rating per anode leg under 50 % duty cycle at TC = 145 °C; supports high-power 12 V/5 V output rails. |
| VF | 0.57 V @ 10 A, 125 °C - Low conduction loss enables >95 % efficiency in high-current, low-voltage outputs with minimal thermal derating. |
| EAS | 13 mJ - Non-repetitive avalanche energy per leg; provides robustness during inductive turn-off transients without snubber circuitry. |
| RthJC | 3.25 °C/W per leg - Thermal resistance from junction to case; enables direct heatsink mounting for high-power density designs. |
| CT | 900 pF @ 5 V - Junction capacitance per leg; contributes to low reverse recovery charge and reduced switching loss in MHz-range converters. |
| dV/dt | 10,000 V/μs - Voltage rate-of-change immunity; prevents false triggering in high-dV/dt environments like motor drives or LLC resonant converters. |
Pinout & Package
D2PAK (TO-263AB) surface-mount package with exposed thermal pad; 3-terminal configuration optimized for high-current PCB layout and thermal management.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode Leg 1 | Input terminal for first Schottky die; connects to transformer center-tap or switch node in half-bridge configurations. |
| 2 | Common Cathode | Shared output node for both die; routed to output capacitor or load return; requires low-inductance copper pour for thermal and electrical performance. |
| 3 | Anode Leg 2 | Input terminal for second Schottky die; mirrors Pin 1 in symmetrical center-tap applications. |
Key Features
| Feature | Design Value |
|---|---|
| 175 °C maximum junction temperature | Enables operation in sealed industrial enclosures or automotive under-hood environments without forced air cooling. |
| Guard ring structure | Improves long-term reliability under repetitive surge stress and humidity exposure, validated per JEDEC JESD47. |
| MSL Level 1 moisture sensitivity | Allows unlimited floor life before reflow; eliminates bake requirements and simplifies SMT assembly planning. |
| Halogen-free, RoHS-compliant, Pb-free termination | Meets global environmental compliance mandates including EU RoHS Directive 2011/65/EU and JEDEC JS709E. |
| High-purity epoxy encapsulation | Provides enhanced mechanical strength and moisture resistance (per J-STD-020 LF peak 245 °C). |
Applications
| Server VRM Output Rectification | Industrial DC/DC Converter Secondary |
|---|---|
Use Scenario: High-current, low-voltage (≤3.3 V) output stage of multiphase buck converters supplying CPU/GPU cores. IC Role / Device Role / Timing Role: Dual-leg synchronous rectifier replacement; conducts during low-side MOSFET on-time in center-tap topology. Use Value: 0.57 V VF at 125 °C reduces conduction loss by ~22 % vs. standard 0.73 V Schottkys, lowering thermal load on VRM heatsinks. |
Use Scenario: 24 V input to 5 V/12 V isolated DC/DC module in programmable logic controllers (PLCs) and HMIs. IC Role / Device Role / Timing Role: Center-tapped secondary rectifier in forward or push-pull topology; handles bidirectional current flow during reset cycles. Use Value: 13 mJ EAS withstands inductive kickback from control transformer leakage without clamping diodes, reducing BOM count. |
| Automotive ADAS Power Supply | Telecom Rectifier Module |
Use Scenario: 12 V battery-fed power supply for radar ECU or camera module with extended ambient temperature range (-40 to +105 °C). IC Role / Device Role / Timing Role: Freewheeling diode in boost PFC front-end or post-regulator buck stage; operates continuously at elevated junction temperatures. Use Value: 175 °C TJmax allows full-rated current delivery at case temperatures up to 145 °C, eliminating derating in compact enclosures. |
Use Scenario: 48 V telecom rectifier board delivering 20 A to distributed load units in central office equipment. IC Role / Device Role / Timing Role: Primary output rectifier in dual-active-bridge isolated converter; handles high-frequency AC waveform with minimal reverse recovery. Use Value: 900 pF CT and 8.0 nH LS minimize ringing and EMI generation at 300–500 kHz switching frequencies. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2035CG | Same 35 V VR, 20 A IF(AV), TO-220AC package; higher VF = 0.62 V @ 10 A, 125 °C; no avalanche rating specified. | Requires through-hole mounting and larger heatsink footprint; unsuitable for space-constrained SMT designs. | Select when legacy TO-220 layout exists and thermal margin exceeds 5 °C/W. |
| ON Semiconductor NTS20350CTG | 35 V VR, 20 A IF(AV), D2PAK; VF = 0.59 V @ 10 A, 125 °C; EAS = 10 mJ; MSL Level 3. | Limited floor life (168 hrs) requires controlled handling; lower avalanche robustness may necessitate snubbers in high-Lleak systems. | Prefer for cost-sensitive telecom applications where MSL Level 1 is not mandatory and avalanche margin is verified. |
Compared with STPS2035CG and NTS20350CTG, the VS-20CTQ035STRL-M3 delivers superior thermal performance (RthJC = 3.25 °C/W), guaranteed avalanche ruggedness (13 mJ), and zero-moisture-sensitivity handling-making it optimal for high-reliability, high-density SMT power supplies where layout space, thermal headroom, and assembly simplicity are critical.
Availability
VS-20CTQ035STRL-M3 is available at Aetrix Electronics and suitable for server VRMs, industrial DC/DC converters, automotive ADAS power supplies, and telecom rectifier modules requiring stable component supply, long-lifecycle assurance, and halogen-free compliance.
Supply support for VS-20CTQ035STRL-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 Intertechnology is a global semiconductor manufacturer specializing in discrete components, sensors, and passive elements, with leadership in power rectification, precision resistors, and optoelectronics.
The VS-20CTQ035STRL-M3 belongs to Vishay's high-temperature Schottky rectifier product line, engineered for demanding power conversion applications where low forward drop, high surge tolerance, and extended thermal operation are essential.
FAQ
What is the maximum junction temperature rating for the VS-20CTQ035STRL-M3?
The VS-20CTQ035STRL-M3 is rated for a maximum junction temperature of 175 °C, enabling reliable operation in high-ambient environments such as enclosed industrial power supplies or automotive under-hood applications without thermal derating below full current rating.
Does the VS-20CTQ035STRL-M3 have avalanche energy rating, and what is its value?
Yes, the VS-20CTQ035STRL-M3 has a specified non-repetitive avalanche energy rating of 13 mJ per leg at TJ = 25 °C with IAS = 2.0 A and L = 6.5 mH. This rating ensures robustness against inductive turn-off transients in flyback or forward converter topologies without external protection.
What is the thermal resistance from junction to case for the VS-20CTQ035STRL-M3?
The VS-20CTQ035STRL-M3 has a maximum thermal resistance of 3.25 °C/W per leg under DC operation. This value is measured from the silicon junction to the case surface (pin 2/cathode tab), and assumes proper soldering to a thermally optimized PCB copper area.
Is the VS-20CTQ035STRL-M3 compliant with RoHS and halogen-free standards?
Yes, the VS-20CTQ035STRL-M3 is fully RoHS-compliant and halogen-free, meeting JEDEC JS709E and IEC 61249-2-21 requirements. The "-M3" suffix explicitly denotes lead (Pb)-free terminations and halogen-free molding compound.
What is the moisture sensitivity level (MSL) of the VS-20CTQ035STRL-M3, and how does it affect handling?
The VS-20CTQ035STRL-M3 is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to reflow soldering. This simplifies SMT assembly logistics and eliminates moisture-related popcorning risk during standard lead-free reflow profiles.
VS-20CTQ035STRL-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
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 35 V
- Current - Average Rectified (Io) (per Diode):
- 10A
- Voltage - Forward (Vf) (Max) @ If:
- 640 mV @ 10 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 mA @ 35 V
- Operating Temperature - Junction:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
VS-20CTQ035STRL-M3 FAQ
1.How can I place an order for VS-20CTQ035STRL-M3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-20CTQ035STRL-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-20CTQ035STRL-M3 reliable?
The price and inventory of VS-20CTQ035STRL-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-20CTQ035STRL-M3 is usually 5 days.
3.What payment methods are accepted for VS-20CTQ035STRL-M3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-20CTQ035STRL-M3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-20CTQ035STRL-M3?
VS-20CTQ035STRL-M3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-20CTQ035STRL-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-20CTQ035STRL-M3?
For technical support, including VS-20CTQ035STRL-M3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-20CTQ035STRL-M3 requirements.
6.How does Aetrix verify that VS-20CTQ035STRL-M3 is sourced from the original manufacturer or authorized distributors?
All VS-20CTQ035STRL-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-20CTQ035STRL-M3 meets industry standards.
7.What is the process for return or replacement of VS-20CTQ035STRL-M3?
All VS-20CTQ035STRL-M3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-20CTQ035STRL-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-20CTQ035STRL-M3 part is unused and in its original packaging.
Return procedure for VS-20CTQ035STRL-M3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-20CTQ035STRL-M3 Tags
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