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Vishay General Semiconductor - Diodes Division VS-20CTQ040STRL-M3
- Part No.:
- VS-20CTQ040STRL-M3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
VS-20CTQ040STRL-M3.pdf
- Description:
- DIODE ARR SCHOTT 40V 10A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:7,474
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Product details
Overview
VS-20CTQ040STRL-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 2 × 10 A average forward current per leg, 40 V maximum reverse voltage, and 0.57 V forward voltage at 10 A and 125 °C - optimized for high-frequency switching power supplies and reverse battery protection.
For engineers reviewing the VS-20CTQ040STRL-M3 datasheet, VS-20CTQ040STRL-M3 pinout, VS-20CTQ040STRL-M3 application, or VS-20CTQ040STRL-M3 equivalent, key selection criteria include its 175 °C junction temperature rating, low 900 pF junction capacitance per leg, 10,000 V/μs dV/dt capability, and MSL Level 1 moisture sensitivity - critical for automotive-grade DC/DC converters and industrial SMPS designs requiring ruggedness and thermal stability.
Technical Context
This dual-die Schottky rectifier integrates two independent anode terminals sharing a common cathode, enabling efficient half-wave or center-tapped full-wave rectification without external parallel diodes. Its proprietary barrier technology minimizes reverse leakage to 15 mA at 125 °C while sustaining 175 °C TJ operation.
The device features low-inductance construction (8.0 nH typical series inductance), high surge robustness (1060 A IFSM per leg), and avalanche-rated energy handling (13 mJ EAS per leg), making it suitable for unclamped inductive switching and freewheeling applications where fast recovery and low conduction loss are essential.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) per leg | 10 A (20 A total package rating); supports continuous high-current output in compact dual-leg topology |
| VRRM | 40 V; defines maximum DC blocking capability for 12 V–36 V automotive and industrial bus systems |
| VF @ 10 A, 125 °C | 0.57 V; enables <1.2 W conduction loss per leg at rated current and elevated temperature |
| IRM @ 125 °C | 15 mA; low leakage preserves efficiency in high-temp environments like under-hood electronics |
| RthJC per leg | 3.25 °C/W; allows direct heatsink mounting with predictable thermal rise under 20 A DC load |
| CT @ 5 V | 900 pF per leg; limits capacitive switching loss and EMI generation in >100 kHz converters |
| dV/dt | 10,000 V/μs; ensures stable operation during fast transient voltage edges in synchronous rectifier circuits |
Pinout & Package
D2PAK (TO-263AB) surface-mount package with exposed thermal pad; 3-pin configuration optimized for high-power dissipation and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode A) | First anode terminal | Connects to first input source (e.g., transformer secondary winding end A) |
| 2 (Cathode) | Common cathode | Shared output node for both legs; must be connected to main DC output rail or ground return |
| 3 (Anode B) | Second anode terminal | Connects to second input source (e.g., transformer secondary winding end B) |
Key Features
| Feature | Design Value |
|---|---|
| 175 °C maximum junction temperature | Enables operation in under-hood automotive modules and sealed industrial enclosures without derating |
| Guard ring structure | Improves edge termination reliability and prevents premature breakdown under voltage stress |
| MSL Level 1 (245 °C peak reflow) | Supports standard lead-free SMT reflow profiles without preconditioning or baking |
| JEDEC JESD47 qualified | Validated for long-term reliability in mission-critical power conversion applications |
| Halogen-free, RoHS-compliant, Pb-free terminations | Meets global environmental compliance requirements for automotive and industrial OEMs |
Applications
| Automotive DC/DC Converters | Industrial SMPS Outputs |
|---|---|
|
Use Scenario: Step-down conversion from 24 V vehicle battery to 5 V/3.3 V logic rails in ADAS ECUs. IC Role / Device Role / Timing Role: Center-tapped freewheeling rectifier in synchronous buck converter secondary stage. Use Value: Low VF reduces conduction loss by ~25% vs. standard silicon diodes, improving efficiency above 92% at full load. |
Use Scenario: Output rectification in 48 V telecom power supply delivering 20 A to server backplanes. IC Role / Device Role / Timing Role: Dual-leg common-cathode Schottky for interleaved or center-tapped transformer secondary. Use Value: 175 °C TJ rating allows sustained operation at 145 °C case temperature without derating in forced-air-cooled chassis. |
| Reverse Battery Protection | Freewheeling in Motor Drives |
|
Use Scenario: Preventing damage from accidental reverse polarity connection in 12 V vehicle infotainment systems. IC Role / Device Role / Timing Role: Low-loss series-blocking diode using one anode leg with cathode tied to load ground. Use Value: 0.57 V VF at 10 A yields only 5.7 W dissipation vs. >12 W for comparable Si diodes - reducing heatsink size by 60%. |
Use Scenario: Snubberless flyback path for brushed DC motor H-bridge outputs during PWM off-time. IC Role / Device Role / Timing Role: Fast-recovery freewheeling path absorbing inductive kickback energy. Use Value: 13 mJ EAS rating handles repetitive inductive spikes without degradation, eliminating need for external TVS clamps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2045CG | Same D2PAK package, 20 A total, 45 V VRRM, but VF = 0.62 V @ 10 A/125 °C | Higher VR margin suits 42 V automotive transients; slightly higher conduction loss | Prefer when system requires >40 V blocking headroom and can tolerate +0.05 V VF increase |
| ON Semiconductor NTS20100CTG | Dual common-cathode Schottky in TO-220AB, 20 A total, 40 V, VF = 0.59 V @ 10 A/125 °C, RthJC = 2.5 °C/W | Through-hole mounting; lower thermal resistance but larger footprint and no MSL-1 rating | Choose for legacy through-hole designs or where board space permits larger package and higher thermal performance is prioritized |
Compared with STPS2045CG and NTS20100CTG, VS-20CTQ040STRL-M3 offers the lowest VF at high temperature (0.57 V), combined with MSL Level 1 compatibility and JEDEC JESD47 qualification - making it optimal for high-density, high-reliability SMT automotive and industrial power stages where thermal and process robustness are non-negotiable.
Availability
VS-20CTQ040STRL-M3 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial SMPS outputs, and reverse battery protection circuits requiring stable component supply, long-lifecycle support, and AEC-Q200-aligned reliability.
Supply support for VS-20CTQ040STRL-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 automotive, industrial, and computing markets.
The VS-20CTQ...S-M3 series belongs to Vishay's high-temperature Schottky rectifier product line, engineered specifically for demanding power conversion applications where low VF, high TJ operation, and rugged packaging are mandatory.
FAQ
What is the maximum junction temperature rating for VS-20CTQ040STRL-M3?
The VS-20CTQ040STRL-M3 is rated for a maximum junction temperature of 175 °C. This specification is validated per JEDEC JESD47 and enables reliable operation in high-ambient environments such as automotive engine compartments or sealed industrial enclosures. The device maintains specified electrical performance up to this temperature, with IRM limited to 15 mA at 125 °C and VF stabilized via proprietary barrier technology - ensuring consistent behavior across the full operating range of the VS-20CTQ040STRL-M3.
Is VS-20CTQ040STRL-M3 suitable for lead-free reflow soldering?
Yes, VS-20CTQ040STRL-M3 meets MSL Level 1 per J-STD-020 and is qualified for peak reflow temperatures up to 245 °C. Its halogen-free, RoHS-compliant, and Pb-free terminations are fully compatible with standard lead-free soldering processes. No pre-baking is required before assembly, and the epoxy encapsulation provides enhanced moisture resistance - making the VS-20CTQ040STRL-M3 ideal for high-volume SMT manufacturing lines processing automotive and industrial-grade assemblies.
How does the center-tap configuration of VS-20CTQ040STRL-M3 benefit power supply design?
The center-tap configuration of VS-20CTQ040STRL-M3 integrates two independent anodes (pins 1 and 3) sharing a single common cathode (pin 2), enabling direct implementation of center-tapped transformer rectification without external diode pairing. This reduces PCB layout complexity, parasitic inductance, and component count. In practice, the VS-20CTQ040STRL-M3 supports symmetrical current sharing between legs, simplifies thermal management via shared thermal pad, and improves efficiency over discrete solutions - especially in high-frequency DC/DC converters where layout-induced losses dominate.
What is the avalanche energy rating of VS-20CTQ040STRL-M3, and how is it applied?
The VS-20CTQ040STRL-M3 has a non-repetitive avalanche energy rating (EAS) of 13 mJ per leg, measured at TJ = 25 °C with IAS = 2.0 A and L = 6.5 mH. This rating validates its ability to safely absorb inductive turn-off energy during unclamped switching events - such as freewheeling in motor drives or snubberless flyback paths. Unlike silicon diodes, the VS-20CTQ040STRL-M3 leverages Schottky physics to dissipate this energy without latch-up or permanent degradation, making it suitable for ruggedized designs where external protection components can be eliminated.
Does VS-20CTQ040STRL-M3 have a specified junction-to-case thermal resistance?
Yes, VS-20CTQ040STRL-M3 specifies a maximum thermal resistance of 3.25 °C/W per leg (RthJC) under DC operation, as confirmed in the Vishay datasheet Figure 4 and Thermal-Mechanical Specifications table. This value applies to the D2PAK (TO-263AB) package with proper heatsink contact and is critical for calculating junction temperature rise under real-world load conditions. For full-package thermal modeling, the junction-to-case resistance per package is 1.63 °C/W - reflecting the parallel thermal path of both die to the shared thermal pad - a key parameter when designing thermally constrained VS-20CTQ040STRL-M3 applications.
VS-20CTQ040STRL-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):
- 40 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 @ 40 V
- Operating Temperature - Junction:
- -55°C ~ 175°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
VS-20CTQ040STRL-M3 FAQ
1.How can I place an order for VS-20CTQ040STRL-M3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-20CTQ040STRL-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-20CTQ040STRL-M3 reliable?
The price and inventory of VS-20CTQ040STRL-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-20CTQ040STRL-M3 is usually 5 days.
3.What payment methods are accepted for VS-20CTQ040STRL-M3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-20CTQ040STRL-M3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-20CTQ040STRL-M3?
VS-20CTQ040STRL-M3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-20CTQ040STRL-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-20CTQ040STRL-M3?
For technical support, including VS-20CTQ040STRL-M3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-20CTQ040STRL-M3 requirements.
6.How does Aetrix verify that VS-20CTQ040STRL-M3 is sourced from the original manufacturer or authorized distributors?
All VS-20CTQ040STRL-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-20CTQ040STRL-M3 meets industry standards.
7.What is the process for return or replacement of VS-20CTQ040STRL-M3?
All VS-20CTQ040STRL-M3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-20CTQ040STRL-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-20CTQ040STRL-M3 part is unused and in its original packaging.
Return procedure for VS-20CTQ040STRL-M3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-20CTQ040STRL-M3 Tags
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