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Vishay General Semiconductor - Diodes Division VS-50WQ04FNTRHM3
- Part No.:
- VS-50WQ04FNTRHM3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
VS-50WQ04FNTRHM3.pdf
- Description:
- DIODE SCHOTTKY 40V 5.5A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:5,300
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Product details
Overview
VS-50WQ04FNTRHM3 from Vishay Semiconductors is a high-performance surface-mount Schottky rectifier optimized for low forward voltage drop and compact PCB layout in automotive-grade power conversion. It delivers 5.5 A average forward current at TC = 135 °C, supports 40 V maximum DC reverse voltage, and features AEC-Q101 qualification for under-hood switching power supplies and battery protection circuits.
For engineers reviewing the VS-50WQ04FNTRHM3 datasheet, VS-50WQ04FNTRHM3 pinout, VS-50WQ04FNTRHM3 application, or VS-50WQ04FNTRHM3 equivalent, key selection criteria include its 0.44 V forward voltage at 5 A and 125 °C, 9 mJ non-repetitive avalanche energy rating, DPAK (TO-252AA) thermal performance (RthJC = 3.0 °C/W), and halogen-free RoHS-compliant M3 termination finish.
Technical Context
This Schottky rectifier uses a planar epitaxial construction with guard ring technology to suppress edge breakdown and improve long-term reliability under thermal cycling and surge stress. Its low forward slope resistance (26.77 mΩ) and typical junction capacitance (405 pF at 5 V) support high-frequency operation up to several MHz in DC/DC converters and freewheeling paths.
The device operates across -40 °C to +150 °C junction temperature range and meets JESD201 Class 2 whisker testing and MSL Level 1 (260 °C peak reflow). Its single-diode configuration and DPAK thermal pad enable direct heatsinking without additional thermal interface material in space-constrained automotive modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 5.5 A at 50 % duty cycle, TC = 135 °C - enables compact heatsink design in high-duty-cycle power supplies |
| VRRM / VR | 40 V - suitable for 12 V and 24 V automotive battery systems with margin against load dump transients |
| VF @ 5 A, 125 °C | 0.44 V - reduces conduction loss by ~30 % vs. standard silicon diodes in 5–10 A buck converter outputs |
| EAS | 9 mJ at TJ = 25 °C - withstands inductive turn-off energy in motor drive freewheeling applications |
| RthJC | 3.0 °C/W - allows >3 W continuous dissipation with minimal case-to-heatsink ΔT in DPAK footprint |
| CT @ 5 V | 405 pF - limits switching loss and EMI in 100–500 kHz SMPS designs |
| AEC-Q101 | Qualified - validated for automotive electronics per stress test requirements including HTOL, TCT, and HAST |
Pinout & Package
DPAK (TO-252AA) package with exposed thermal pad on underside; 3-terminal configuration (Anode, Cathode, Base tab electrically connected to Cathode); compatible with standard SMT reflow profiles (MSL Level 1, 260 °C peak).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Input current terminal | Connects to positive side of input source (e.g., switch node in buck topology) |
| Cathode (Pins 2 & 4) | Output current terminal | Common cathode connection; pins 2 and 4 are internally bonded and electrically identical |
| Base tab (Pin 3) | Thermal and electrical cathode | Exposed copper pad tied to cathode; must be soldered to PCB copper pour for thermal management and electrical continuity |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring structure | Prevents premature edge breakdown under high dv/dt and temperature gradients, extending lifetime in automotive transients |
| Low VF slope resistance | 26.77 mΩ - minimizes I²R losses during high-current pulses in battery charging and regenerative braking |
| Halogen-free M3 terminations | RoHS-compliant, Pb-free, and halogen-free - meets automotive OEM environmental compliance requirements |
| High surge robustness | 550 A IFSM (10 ms sine) - survives cold-crank and jump-start events in vehicle power distribution units |
Applications
| Automotive DC/DC Converters | On-Board Charger (OBC) Output Stage |
|---|---|
Use Scenario: Step-down conversion from 400 V battery to 12 V auxiliary rail in EV powertrain control units. IC Role / Device Role / Timing Role: Freewheeling Schottky rectifier in synchronous buck output stage. Use Value: 0.44 V VF at 125 °C reduces conduction loss by 1.8 W vs. alternative 0.65 V diodes at 5 A, lowering thermal load on DPAK footprint. | Use Scenario: Secondary-side rectification in isolated LLC resonant converters for PHEV onboard chargers. IC Role / Device Role / Timing Role: High-frequency output rectifier handling 5–10 A average current at 100–300 kHz switching. Use Value: 405 pF junction capacitance and low stored charge minimize reverse recovery loss and EMI generation during zero-voltage switching transitions. |
| Battery Reverse Polarity Protection | Industrial UPS Hold-Up Circuits |
Use Scenario: Series-connected protection diode in 24 V truck battery management systems to prevent damage from accidental reverse connection. IC Role / Device Role / Timing Role: Unidirectional blocking element placed between battery terminal and system input. Use Value: 40 V VR rating provides 2× margin over nominal 24 V systems, while 9 mJ EAS ensures survivability during hot-swap insertion transients. | Use Scenario: Hold-up diode in 48 V industrial uninterruptible power supplies feeding critical PLC I/O modules. IC Role / Device Role / Timing Role: OR-ing diode maintaining output voltage during AC mains interruption. Use Value: 3.0 °C/W RthJC enables >2.5 W continuous dissipation without external heatsink, supporting compact 1U rack-mounted form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Schottky rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STPS5L40SF | 5 A IF(AV), 40 V VRRM, TO-277 package (smaller footprint, no thermal tab), VF = 0.52 V @ 5 A, 125 °C | Limited thermal capability (RthJC ≈ 5.5 °C/W); unsuitable for sustained >2.5 W dissipation | Select when board space is constrained and power dissipation remains below 1.5 W; verify thermal relief via copper pour |
| ON Semiconductor NRVB540NT3G | 5 A IF(AV), 40 V VRRM, DPAK package, VF = 0.55 V @ 5 A, 125 °C, not AEC-Q101 qualified | No automotive qualification; lower surge rating (IFSM = 120 A) and higher VF increase conduction loss | Acceptable for industrial/non-automotive 12 V supplies where AEC-Q101 is not mandated and cost sensitivity outweighs efficiency |
Compared with STPS5L40SF and NRVB540NT3G, the VS-50WQ04FNTRHM3 offers superior thermal performance (3.0 °C/W vs. ≥5.5 °C/W), lower forward voltage (0.44 V), and full AEC-Q101 compliance-making it the preferred choice for thermally demanding automotive power modules requiring long-term reliability.
Availability
VS-50WQ04FNTRHM3 is available at Aetrix Electronics and suitable for automotive power conversion, battery management systems, and industrial UPS hold-up circuits requiring stable component supply and traceable sourcing.
Supply support for VS-50WQ04FNTRHM3 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 manufacturer of discrete semiconductors and passive components, specializing in high-reliability devices for automotive, industrial, and computing markets.
The VS-50WQ04FNTRHM3 belongs to Vishay's WQ "high-performance Schottky" product line, engineered specifically for low-loss, high-efficiency rectification in automotive-grade power supplies and battery protection circuits.
FAQ
What is the maximum average forward current rating for VS-50WQ04FNTRHM3 under real-world thermal conditions?
The VS-50WQ04FNTRHM3 is rated for 5.5 A average forward current at TC = 135 °C with 50 % duty cycle rectangular waveform. This rating assumes proper PCB copper thermal relief (≥1 in² 2 oz copper connected to the cathode tab) and ambient ≤85 °C. At TC = 115 °C, the derated IF(AV) is 6.5 A per Fig. 5 in the datasheet. The VS-50WQ04FNTRHM3 must not exceed 150 °C junction temperature in operation.
Does VS-50WQ04FNTRHM3 support lead-free reflow assembly, and what is its MSL rating?
Yes, the VS-50WQ04FNTRHM3 is MSL Level 1 per J-STD-020, with a maximum peak reflow temperature of 260 °C. Its M3 termination designation confirms halogen-free, RoHS-compliant, and lead (Pb)-free construction. No moisture sensitivity precautions are required prior to soldering, and the device is compatible with standard SnAgCu (SAC305) reflow profiles.
How does the guard ring feature in VS-50WQ04FNTRHM3 improve reliability in automotive applications?
The guard ring in VS-50WQ04FNTRHM3 mitigates electric field crowding at the silicon periphery, preventing premature avalanche breakdown during high dv/dt transients such as load dump or alternator ripple. This structural enhancement increases ruggedness under thermal cycling and extends operational life in under-hood environments where junction temperatures regularly reach 125–150 °C. The VS-50WQ04FNTRHM3 demonstrates improved long-term stability versus non-guard-ring Schottky diodes in accelerated life testing.
Can VS-50WQ04FNTRHM3 replace standard PN-junction rectifiers in existing 12 V power supplies?
Yes, the VS-50WQ04FNTRHM3 can directly replace PN rectifiers like 1N5822 in 12 V power supplies, provided layout accommodates the DPAK footprint and cathode tab is connected to thermal copper. Its 0.44 V VF at 5 A and 125 °C reduces conduction loss by ~1.05 W compared to a typical 0.7 V PN diode, lowering thermal stress and improving efficiency. The VS-50WQ04FNTRHM3 requires no gate drive or timing changes, functioning as a drop-in replacement for uncontrolled rectification.
What is the non-repetitive avalanche energy rating of VS-50WQ04FNTRHM3, and how is it applied in circuit protection?
The VS-50WQ04FNTRHM3 has a non-repetitive avalanche energy (EAS) rating of 9 mJ at TJ = 25 °C with IAS = 1.5 A and L = 8 mH. This parameter quantifies its ability to absorb inductive turn-off energy without failure-critical in freewheeling applications with high-L motors or solenoids. Designers use this value to size snubbers or verify safe operating area during transient overload. The VS-50WQ04FNTRHM3 must not be subjected to repetitive avalanche conditions; EAS applies only to single-event energy absorption.
VS-50WQ04FNTRHM3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io):
- 5.5A
- Voltage - Forward (Vf) (Max) @ If:
- 510 mV @ 5 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 3 mA @ 40 V
- Capacitance @ Vr, F:
- 405pF @ 5V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252AA (DPAK)
- Operating Temperature - Junction:
- -40°C ~ 150°C
VS-50WQ04FNTRHM3 FAQ
1.How can I place an order for VS-50WQ04FNTRHM3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-50WQ04FNTRHM3 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-50WQ04FNTRHM3 reliable?
The price and inventory of VS-50WQ04FNTRHM3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-50WQ04FNTRHM3 is usually 5 days.
3.What payment methods are accepted for VS-50WQ04FNTRHM3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-50WQ04FNTRHM3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-50WQ04FNTRHM3?
VS-50WQ04FNTRHM3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-50WQ04FNTRHM3 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-50WQ04FNTRHM3?
For technical support, including VS-50WQ04FNTRHM3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-50WQ04FNTRHM3 requirements.
6.How does Aetrix verify that VS-50WQ04FNTRHM3 is sourced from the original manufacturer or authorized distributors?
All VS-50WQ04FNTRHM3 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-50WQ04FNTRHM3 meets industry standards.
7.What is the process for return or replacement of VS-50WQ04FNTRHM3?
All VS-50WQ04FNTRHM3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-50WQ04FNTRHM3, 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-50WQ04FNTRHM3 part is unused and in its original packaging.
Return procedure for VS-50WQ04FNTRHM3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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