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Vishay General Semiconductor - Diodes Division VS-6CWQ04FNHM3
- Part No.:
- VS-6CWQ04FNHM3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Diode Arrays
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
VS-6CWQ04FNHM3.pdf
- Description:
- DIODE ARRAY SCHOTT 40V 3.5A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,311
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Product details
Overview
VS-6CWQ04FNHM3 from Vishay Semiconductors is a surface-mount, center-tap, dual common-cathode Schottky rectifier rated for 40 V reverse voltage and 3.5 A average forward current per leg (7 A total device), with 0.49 V forward voltage at 3 A and 125 °C junction temperature-designed for high-frequency switching power supplies and battery protection circuits.
For engineers reviewing the VS-6CWQ04FNHM3 datasheet, VS-6CWQ04FNHM3 pinout, VS-6CWQ04FNHM3 application, or VS-6CWQ04FNHM3 equivalent, key selection criteria include its AEC-Q101 qualification, DPAK (TO-252AA) package thermal resistance of 4.70 °C/W per leg, 8 mJ non-repetitive avalanche energy rating, and low 37.33 mΩ forward slope resistance enabling efficient high-current freewheeling in automotive DC/DC converters.
Technical Context
This dual-leg Schottky rectifier uses a common-cathode center-tap configuration to support synchronous rectification and bidirectional current paths in half-bridge or buck-derived topologies. Its guard ring structure enhances ruggedness against transient overvoltage and thermal cycling stress.
Designed for operation up to 150 °C junction temperature and qualified to AEC-Q101, it supports automotive-grade reliability with MSL Level 1 moisture sensitivity and JESD201 Class 2 whisker resistance-enabling use in under-hood power modules without derating at 135 °C case temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR (Max DC reverse voltage) | 40 V - defines maximum blocking capability in reverse-biased operation without breakdown |
| IF(AV) per leg | 3.5 A - continuous DC or rectangular-wave forward current per anode leg at TC = 135 °C |
| VF at 3 A / 125 °C | 0.49 V - low conduction loss enabling >95 % efficiency in 12 V–48 V output converters |
| EAS per leg | 8 mJ - avalanche energy handling capacity during inductive turn-off transients |
| RthJC per leg | 4.70 °C/W - thermal resistance from junction to case, enabling direct heatsink mounting in compact layouts |
| dV/dt rating | 10,000 V/μs - high voltage slew rate immunity for fast-switching GaN/SiC-based designs |
| CT at 5 V | 189 pF - low junction capacitance minimizing switching losses and EMI in MHz-range applications |
Pinout & Package
DPAK (TO-252AA) surface-mount package with exposed thermal pad on underside; 3-pin outline (2 anodes + 1 common cathode tab); JEDEC-compliant footprint with 6.0 mm × 6.7 mm body and 1.5 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode A) | First anode terminal | Connects to input side of first rectification path; electrically isolated from Anode B |
| 2 (Cathode) | Common cathode node | Shared output node for both legs; serves as thermal and electrical reference point |
| 3 (Anode B) | Second anode terminal | Connects to input side of second rectification path; symmetric with Pin 1 |
Key Features
| Feature | Design Value |
|---|---|
| Guard ring construction | Prevents edge breakdown under high dv/dt and improves long-term reliability in harsh environments |
| AEC-Q101 qualification | Validated for automotive powertrain and chassis applications requiring zero-failure field performance |
| Halogen-free & RoHS-compliant (M3) | Meets global environmental compliance mandates without compromising thermal or electrical performance |
| MSL Level 1 rating | Enables standard SMT reflow without pre-baking, reducing manufacturing complexity and cost |
| Low forward slope resistance (rt) | 37.33 mΩ - minimizes I²R conduction loss across full load range, critical for high-efficiency battery charging |
Applications
| Automotive DC/DC Converters | Disk Drive Power Supplies |
|---|---|
Use Scenario: 12 V to 5 V/3.3 V step-down conversion in engine control units and ADAS modules. IC Role / Device Role / Timing Role: Dual-leg synchronous rectifier replacing MOSFETs in secondary-side regulation. Use Value: 0.49 V VF at 125 °C reduces conduction loss by ~30 % vs. standard Schottky diodes, improving thermal margin in sealed enclosures. | Use Scenario: +5 V and +12 V rail generation for HDD spindle motors and servo controllers. IC Role / Device Role / Timing Role: Freewheeling diode in flyback and forward converter outputs. Use Value: 8 mJ EAS rating withstands inductive kickback from motor windings during sudden shutdown events. |
| Battery Charging Circuits | Reverse Battery Protection |
Use Scenario: Input OR-ing and charge path isolation in 24 V/48 V industrial battery systems. IC Role / Device Role / Timing Role: Low-VF common-cathode rectifier enabling bidirectional current sensing and fault isolation. Use Value: 37.33 mΩ rt ensures <100 mW conduction loss at 3 A, minimizing self-heating during continuous charging. | Use Scenario: Polarity protection in automotive infotainment and telematics head units. IC Role / Device Role / Timing Role: Series-blocking Schottky element in main power input path. Use Value: 40 V VR rating provides 2× safety margin over 12 V nominal systems, preventing reverse-conduction failure during jump-start events. |
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-6CWQ04FNT3 | Tape-and-reel packaging (2000 pcs/reel); identical electrical specs and DPAK footprint | No change in circuit function or layout; differs only in packaging format and MOQ | Select when automated SMT placement requires reel-fed supply and volume ≥2000 units |
| ON Semiconductor NSR20F40HT1G | Single-anode 40 V / 20 A Schottky; TO-220AC package; higher IF(AV) but no center-tap configuration | Requires redesign for dual-leg topology; unsuitable for common-cathode synchronous rectification | Use only for single-path freewheeling where space allows larger through-hole mounting |
Compared with VS-6CWQ04FNT3, the VS-6CWQ04FNHM3 offers tube packaging for prototyping and low-volume builds, while the NSR20F40HT1G lacks center-tap functionality entirely-making it incompatible for applications requiring dual independent anodes sharing one cathode node.
Availability
VS-6CWQ04FNHM3 is available at Aetrix Electronics and suitable for automotive DC/DC converters, industrial battery chargers, and disk drive power supplies requiring stable component supply across extended production lifecycles.
Supply support for VS-6CWQ04FNHM3 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-6CWQ04FNHM3 belongs to Vishay's "Q" series of high-performance Schottky rectifiers-engineered specifically for high-frequency, high-efficiency power conversion in space-constrained and thermally demanding applications.
FAQ
What is the maximum junction temperature rating for the VS-6CWQ04FNHM3?
The VS-6CWQ04FNHM3 has a maximum junction temperature (TJ max.) of +150 °C, validated across its full operating range from –40 °C to +150 °C. This rating enables reliable operation in under-hood automotive environments and sealed industrial power modules where ambient temperatures exceed 100 °C. The device maintains specified VF and IR performance up to this limit, supported by its 4.70 °C/W RthJC per leg.
Is the VS-6CWQ04FNHM3 suitable for AEC-Q101 automotive applications?
Yes, the VS-6CWQ04FNHM3 is explicitly AEC-Q101 qualified, as confirmed in its Vishay datasheet revision 03-Aug-2023 (Document Number: 94744). It meets all stress test requirements including temperature cycling, high-temperature operating life, and unbiased highly accelerated stress testing-making it approved for use in powertrain, chassis, and body electronics systems where automotive-grade reliability is mandatory.
What does the "H" and "M3" suffix indicate in VS-6CWQ04FNHM3?
In VS-6CWQ04FNHM3, the "H" denotes AEC-Q101 qualification, and "M3" specifies halogen-free, RoHS-compliant construction with lead (Pb)-free terminations. These suffixes are defined in Vishay's ordering information table and confirm compliance with automotive environmental and reliability standards-critical for Tier 1 suppliers requiring full material declarations and process traceability.
Can the VS-6CWQ04FNHM3 replace a standard dual-diode package in existing PCB layouts?
Yes, the VS-6CWQ04FNHM3 uses the industry-standard DPAK (TO-252AA) outline with 3-pin center-tap configuration, matching mechanical and thermal footprints of legacy dual-Schottky packages like the SB540 or SS34 in common-cathode variants. Its pin 1–2–3 assignment (Anode–Cathode–Anode) is consistent with JEDEC TO-252AA, enabling drop-in replacement without layout changes-provided the original design used the same package and polarity.
What is the typical junction capacitance of the VS-6CWQ04FNHM3 and how does it affect switching performance?
The VS-6CWQ04FNHM3 has a typical junction capacitance (CT) of 189 pF per leg at VR = 5 V and 25 °C. This low capacitance minimizes reverse recovery charge (QRR) and associated switching losses, supporting clean turn-off in high-frequency (>300 kHz) converters. Combined with its 10,000 V/μs dV/dt rating, it reduces EMI generation and gate-drive stress in GaN-based topologies.
VS-6CWQ04FNHM3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tube
- Product Status:
- Active
- Diode Configuration:
- 1 Pair Common Cathode
- Technology:
- Schottky
- Voltage - DC Reverse (Vr) (Max):
- 40 V
- Current - Average Rectified (Io) (per Diode):
- 3.5A
- Voltage - Forward (Vf) (Max) @ If:
- 530 mV @ 3 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 2 mA @ 40 V
- Operating Temperature - Junction:
- -40°C ~ 150°C
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TO-252AA (DPAK)
VS-6CWQ04FNHM3 FAQ
1.How can I place an order for VS-6CWQ04FNHM3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-6CWQ04FNHM3 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-6CWQ04FNHM3 reliable?
The price and inventory of VS-6CWQ04FNHM3 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-6CWQ04FNHM3 is usually 5 days.
3.What payment methods are accepted for VS-6CWQ04FNHM3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-6CWQ04FNHM3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-6CWQ04FNHM3?
VS-6CWQ04FNHM3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-6CWQ04FNHM3 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-6CWQ04FNHM3?
For technical support, including VS-6CWQ04FNHM3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-6CWQ04FNHM3 requirements.
6.How does Aetrix verify that VS-6CWQ04FNHM3 is sourced from the original manufacturer or authorized distributors?
All VS-6CWQ04FNHM3 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-6CWQ04FNHM3 meets industry standards.
7.What is the process for return or replacement of VS-6CWQ04FNHM3?
All VS-6CWQ04FNHM3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-6CWQ04FNHM3, 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-6CWQ04FNHM3 part is unused and in its original packaging.
Return procedure for VS-6CWQ04FNHM3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VS-6CWQ04FNHM3 Tags
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