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Vishay General Semiconductor - Diodes Division VS-20TQ045STRR-M3
- Part No.:
- VS-20TQ045STRR-M3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
VS-20TQ045STRR-M3.pdf
- Description:
- DIODE SCHOTTKY 45V 20A TO263AB
- Quantity:
- Payment:
- Shipping:
Inventory:9,846
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Product details
Overview
VS-20TQ045STRR-M3 from Vishay Semiconductors is a high-performance Schottky rectifier optimized for low forward voltage drop (0.51 V at 20 A, 125 °C) and high-frequency switching in power conversion circuits. It features a 45 V reverse voltage rating, 20 A average forward current capability, D2PAK (TO-263AB) surface-mount package, and operates up to 150 °C junction temperature - ideal for DC/DC converters and reverse battery protection.
For engineers reviewing the VS-20TQ045STRR-M3 datasheet, VS-20TQ045STRR-M3 pinout, VS-20TQ045STRR-M3 application, or VS-20TQ045STRR-M3 equivalent, key selection criteria include its 0.51 V VF at 20 A/125 °C, 105 mA IRM at 125 °C, 1.50 °C/W RthJC, 27 mJ EAS avalanche energy rating, and MSL Level 1 moisture sensitivity compliance.
Technical Context
This Schottky rectifier employs proprietary barrier technology enabling stable operation at TJ = 150 °C while maintaining low conduction loss. Its single-cathode-base configuration supports unidirectional freewheeling and reverse polarity protection with minimal voltage overhead.
The device delivers high surge robustness (1800 A IFSM, 5 μs sine) and fast switching performance (dV/dt = 10,000 V/μs), supported by low junction capacitance (1400 pF at 5 V) and typical series inductance of 8.0 nH - critical for minimizing ringing in high-frequency SMPS designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Max DC Reverse Voltage) | 45 V - defines maximum continuous blocking capability without breakdown in reverse bias |
| IF(AV) (Avg Forward Current) | 20 A - sustainable DC or rectangular-wave current at TC = 116 °C with heatsinking |
| VF (Forward Voltage) | 0.51 V at 20 A, TJ = 125 °C - directly determines conduction loss and thermal load in high-current paths |
| IRM (Reverse Leakage) | 105 mA at VR = 45 V, TJ = 125 °C - impacts standby power loss and thermal runaway risk in hot environments |
| RthJC (Junction-to-Case) | 1.50 °C/W - enables precise thermal design when mounted to heatsink; dictates minimum thermal interface requirement |
| EAS (Avalanche Energy) | 27 mJ at TJ = 25 °C - quantifies ruggedness against inductive turn-off transients without external snubbing |
| dV/dt Rating | 10,000 V/μs - ensures reliable commutation in fast-switching topologies without spurious turn-on |
Pinout & Package
Package: D2PAK (TO-263AB), surface-mount, thermally enhanced with exposed copper drain pad. Meets UL 94-V0, JEDEC JESD47 qualified, MSL Level 1 (245 °C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | Anode connection | Input terminal for forward current flow; connects to switched/high-side node in buck/flyback outputs |
| 2 (Cathode) | Cathode connection | Output/return path; electrically tied to thermal pad - must be routed to large copper area for heat dissipation |
| 3 (Thermal Pad) | Integrated thermal slug | Not electrically isolated; serves as cathode extension and primary heat path to PCB - requires solder mask defined thermal relief |
Key Features
| Feature | Design Value |
|---|---|
| 150 °C Junction Operation | Enables compact thermal design in sealed or high-ambient environments without derating below 20 A |
| Guard Ring Structure | Improves edge termination reliability and prevents premature surface breakdown under high dv/dt or humidity stress |
| High-Purity Epoxy Encapsulation | Provides mechanical robustness and moisture resistance per J-STD-020, supporting automotive under-hood use |
| Halogen-Free & RoHS-Compliant | M3 suffix confirms lead-free matte tin plating and halogen-free molding compound - compliant with IPC-1752A reporting |
| Low Inductance Layout | 8.0 nH typical LS supports <100 kHz–1 MHz switching with minimal parasitic oscillation in synchronous rectifier layouts |
Applications
| DC/DC Converter Output Rectification | Automotive Reverse Battery Protection |
|---|---|
|
Use Scenario: High-efficiency 12 V → 3.3 V/5 V point-of-load converter in ADAS ECU. IC Role / Device Role / Timing Role: Primary output rectifier replacing synchronous MOSFET in cost-sensitive design; conducts during low-side switch off-time. Use Value: 0.51 V VF minimizes conduction loss at 20 A load, reducing thermal footprint vs. higher-VF alternatives - critical for convection-cooled modules. |
Use Scenario: 12 V vehicle electrical system protecting infotainment head unit from reverse polarity jump-start events. IC Role / Device Role / Timing Role: Series-connected anode-to-battery, cathode-to-system; blocks reverse current during incorrect cable connection. Use Value: 45 V VR rating exceeds ISO 7637-2 pulse 5a (up to 40 V) margin; 1800 A IFSM withstands transient surge without fuse activation. |
| Freewheeling Diode in Motor Drive | Industrial AC/DC Front-End Clamp |
|
Use Scenario: 24 V BLDC motor controller with PWM-driven half-bridge driving inductive windings. IC Role / Device Role / Timing Role: Freewheeling path for inductive kickback during high-side FET off-time; clamps voltage spike to ~0.5 V above rail. Use Value: 10,000 V/μs dV/dt rating prevents false turn-on during rapid voltage transitions; 150 °C operation sustains reliability under motor stall conditions. |
Use Scenario: 48 V telecom rectifier module using active clamp flyback topology with high-frequency switching. IC Role / Device Role / Timing Role: Clamp diode in active clamp circuit; recirculates transformer leakage energy back to input capacitor. Use Value: 27 mJ EAS rating absorbs repetitive leakage spikes without degradation; low CT (1400 pF) limits capacitive loading on clamp switch node. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS2045CGY-TR | Same D2PAK package, 20 A/45 V, but VF = 0.62 V @ 20 A/125 °C; RthJC = 2.0 °C/W | Higher conduction loss and thermal resistance reduce efficiency in thermally constrained layouts | Prefer VS-20TQ045STRR-M3 where <0.55 V VF and <1.6 °C/W RthJC are required for thermal margin |
| ON Semi NRVB2045CTT4G | Dual common-cathode die in TO-220AB; VF = 0.54 V @ 20 A/125 °C; not surface-mountable | Requires through-hole assembly and larger board area; lacks integrated thermal pad for PCB heat spreading | Choose VS-20TQ045STRR-M3 for SMT production, automated reflow, and superior thermal coupling to PCB |
Compared with STPS2045CGY-TR and NRVB2045CTT4G, the VS-20TQ045STRR-M3 offers the lowest VF (0.51 V), best thermal resistance (1.50 °C/W), and optimized D2PAK layout for high-power density SMT designs - making it preferred for space-constrained, high-efficiency power stages.
Availability
VS-20TQ045STRR-M3 is available at Aetrix Electronics and suitable for DC/DC converters, automotive reverse battery protection, freewheeling diode circuits, and industrial clamp applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for VS-20TQ045STRR-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-20TQ series targets high-efficiency power conversion systems demanding low VF, high TJ operation, and rugged packaging - specifically engineered for next-generation SMPS, EV auxiliary supplies, and harsh-environment rectification.
FAQ
What is the maximum junction temperature rating for the VS-20TQ045STRR-M3?
The VS-20TQ045STRR-M3 is rated for continuous operation up to 150 °C junction temperature, validated per JEDEC JESD47. This allows full 20 A IF(AV) capability at elevated ambient temperatures when properly heatsinked, unlike standard Schottkys limited to 125 °C.
Does the VS-20TQ045STRR-M3 have a built-in thermal pad, and how should it be connected?
Yes, the VS-20TQ045STRR-M3 uses a D2PAK (TO-263AB) package with an exposed thermal pad that is electrically connected to the cathode (Pin 2). It must be soldered to a large PCB copper area - ideally with multiple thermal vias - to achieve the specified 1.50 °C/W RthJC and prevent thermal throttling.
What does the "-M3" suffix indicate in VS-20TQ045STRR-M3?
The "-M3" suffix on VS-20TQ045STRR-M3 denotes halogen-free, RoHS-compliant construction with matte tin-plated leads. It confirms compliance with IPC-1752A material declarations and supports lead-free reflow profiles up to 245 °C peak, per J-STD-020 MSL Level 1.
How does the VS-20TQ045STRR-M3 perform under repetitive avalanche conditions?
The VS-20TQ045STRR-M3 supports repetitive avalanche current (IAR) of 4 A with linear decay in 1 μs, enabled by its guard ring structure and rugged die design. This allows safe operation in inductive switching circuits without external snubbers, provided VA ≤ 1.5 × VR (i.e., ≤67.5 V) during clamping.
Is the VS-20TQ045STRR-M3 suitable for automotive applications?
Yes, the VS-20TQ045STRR-M3 is qualified to JEDEC JESD47 and meets MSL Level 1 reflow requirements. Its 150 °C TJ rating, high IFSM (1800 A), and moisture-resistant epoxy make it suitable for under-hood automotive applications including reverse battery protection and DC/DC converters in ADAS and body control modules.
VS-20TQ045STRR-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):
- 45 V
- Current - Average Rectified (Io):
- 20A
- Voltage - Forward (Vf) (Max) @ If:
- 570 mV @ 20 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2.7 mA @ 45 V
- Capacitance @ Vr, F:
- 1400pF @ 5V, 1MHz
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-263AB (D2PAK)
- Operating Temperature - Junction:
- -55°C ~ 150°C
VS-20TQ045STRR-M3 FAQ
1.How can I place an order for VS-20TQ045STRR-M3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-20TQ045STRR-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-20TQ045STRR-M3 reliable?
The price and inventory of VS-20TQ045STRR-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-20TQ045STRR-M3 is usually 5 days.
3.What payment methods are accepted for VS-20TQ045STRR-M3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-20TQ045STRR-M3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-20TQ045STRR-M3?
VS-20TQ045STRR-M3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-20TQ045STRR-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-20TQ045STRR-M3?
For technical support, including VS-20TQ045STRR-M3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-20TQ045STRR-M3 requirements.
6.How does Aetrix verify that VS-20TQ045STRR-M3 is sourced from the original manufacturer or authorized distributors?
All VS-20TQ045STRR-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-20TQ045STRR-M3 meets industry standards.
7.What is the process for return or replacement of VS-20TQ045STRR-M3?
All VS-20TQ045STRR-M3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-20TQ045STRR-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-20TQ045STRR-M3 part is unused and in its original packaging.
Return procedure for VS-20TQ045STRR-M3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-20TQ045STRR-M3 Tags
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