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Vishay General Semiconductor - Diodes Division VS-ETU1506-M3
- Part No.:
- VS-ETU1506-M3
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- TO-220-2
- Datasheet:
-
VS-ETU1506-M3.pdf
- Description:
- DIODE GEN PURP 600V 15A TO220AC
- Quantity:
- Payment:
- Shipping:
Inventory:7,958
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Product details
Overview
VS-ETU1506-M3 from Vishay Semiconductors is an ultrafast soft-recovery FRED Pt® rectifier optimized for Discontinuous Conduction Mode (DCM) Power Factor Correction (PFC), rated at 15 A average forward current, 600 V peak reverse voltage, and 24 ns typical reverse recovery time at 1 A/100 A/μs - deployed in 70–400 W AC/DC SMPS for laptop adapters and desktop PC power supplies.
For engineers reviewing the VS-ETU1506-M3 datasheet, VS-ETU1506-M3 pinout, VS-ETU1506-M3 application, or VS-ETU1506-M3 equivalent, key selection criteria include its 175 °C junction temperature rating, low 1.1 V forward voltage at 15 A/150 °C, 1.2 °C/W thermal resistance (junction-to-case), and TO-220AC 2L true 2-pin package with isolated heatsink-compatible base.
Technical Context
This device implements a single-die, planar epitaxial silicon structure engineered for ultralow conduction loss and soft-switching recovery behavior. Its dynamic performance is characterized by tightly controlled stored charge (Qrr = 107 nC typ. at 25 °C) and low peak reverse recovery current (IRRM = 5 A typ. at 25 °C), minimizing snubber stress and EMI generation in high-frequency PFC stages.
The VS-ETU1506-M3 operates with a fixed single-anode/single-cathode configuration in a thermally enhanced TO-220AC 2L package. Its JEDEC JESD47-qualified construction supports stable operation up to 175 °C junction temperature, with RthJC = 1.2–1.4 °C/W enabling efficient heatsinking in compact, high-density power supplies.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IF(AV) | 15 A - maximum continuous DC forward current at TC = 151 °C, defining usable output power headroom in PFC boost diodes |
| VRRM | 600 V - peak repetitive reverse voltage rating, ensuring safe operation across universal AC input (85–265 VAC) with margin |
| VF @ 15 A / 150 °C | 1.1 V - low forward drop directly reducing conduction losses and thermal load in high-current PFC legs |
| trr (typ.) | 24 ns @ IF = 1 A, dIF/dt = 100 A/μs - ultrafast soft recovery minimizes switching node ringing and EMI in DCM PFC |
| TJ max. | 175 °C - extended junction temperature capability enables higher power density and derating flexibility |
| RthJC | 1.2–1.4 °C/W - low thermal resistance allows direct mounting to heatsinks without thermal interface degradation |
| Qrr (typ.) | 107 nC @ TJ = 25 °C - low stored charge reduces turn-off energy loss and snubber dissipation in hard-switched topologies |
Pinout & Package
VS-ETU1506-M3 uses the TO-220AC 2L package: a 3-lead outline with leads 1 (anode) and 2 (cathode) electrically active, lead 3 internally connected to the metal base (cathode-side thermal pad). The base is electrically isolated from leads but serves as the primary thermal path and must be mounted to a heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Lead 1 | Anode | Main current entry point; connects to PFC boost inductor output node |
| Lead 2 | Cathode | Main current exit point; connects to PFC output capacitor positive rail |
| Lead 3 (Base) | Thermal Pad / Cathode Tie | Electrically tied to cathode (Lead 2); provides mechanical mounting surface and primary thermal conduction path to heatsink |
Key Features
| Feature | Design Value |
|---|---|
| Ultrafast soft recovery | trr = 24 ns (typ.) with low IRRM and smooth current tail - reduces voltage overshoot and EMI in DCM PFC |
| FRED Pt® technology | Optimized lifetime control yielding consistent Qrr and trr across temperature - improves system reliability vs. standard fast diodes |
| True 2-pin configuration | Leads 1 and 2 are sole electrical terminals; base (lead 3) is cathode-tied thermal pad - simplifies layout and eliminates floating heatsink concerns |
| JEDEC JESD47 qualified | Validated for robustness under accelerated stress conditions - ensures long-term stability in industrial and consumer power supplies |
| Halogen-free & RoHS-compliant (-M3) | Meets global environmental compliance requirements without compromising thermal or electrical performance |
Applications
| Laptop AC Adapter PFC Stage | Desktop PC ATX Power Supply |
|---|---|
Use Scenario: 90–240 VAC input, 120–300 W DCM boost PFC stage operating at 65–133 kHz. IC Role / Device Role / Timing Role: Primary boost rectifier handling full input current during switch off-time; critical for efficiency and THD compliance. Use Value: 1.1 V VF at 15 A/150 °C and 24 ns trr reduce conduction + switching losses by >15% vs. standard ultrafast diodes, enabling 80 PLUS Bronze certification. | Use Scenario: Universal-input ATX PSU with active PFC front-end delivering +3.3 V, +5 V, +12 V rails. IC Role / Device Role / Timing Role: Freewheeling diode in continuous/transition-mode PFC boost converter; also used as output rectifier in auxiliary +5 VSB supply. Use Value: 175 °C TJ rating and 1.2 °C/W RthJC allow sustained 15 A operation without forced airflow, supporting fanless or low-noise designs. |
| Flat Panel TV Power Board | LED Monitor Internal SMPS |
Use Scenario: Slim-form-factor TV with integrated 150–250 W PFC+LLC power stage in confined chassis volume. IC Role / Device Role / Timing Role: High-efficiency boost rectifier in DCM PFC; selected for minimal thermal footprint and low EMI signature. Use Value: Low Qrr (107 nC) and soft recovery suppress dv/dt-induced gate drive coupling in adjacent MOSFETs, easing EMI filter design. | Use Scenario: 70–120 W internal power supply for LED-backlit monitors with tight height constraints. IC Role / Device Role / Timing Role: Output rectifier in flyback or quasi-resonant converter powering logic and backlight drivers. Use Value: TO-220AC 2L package enables direct heatsink mounting on PCB backside, eliminating need for discrete thermal vias or copper pours. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultrafast rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Vishay VS-ETU1506-M4 | Same die, identical electrical specs, but packaged in tape-and-reel (vs. tube) and marked with -M4 suffix; no functional difference. | No application impact - same thermal, electrical, and mechanical behavior; only packaging and marking differ. | Select -M4 only for automated SMT assembly lines requiring reel-fed feeders; -M3 remains optimal for manual or semi-automated through-hole production. |
| ON Semiconductor MUR1560 | Higher VF (1.7 V min. @ 15 A), slower trr (50 ns typ.), and lower TJ max. (175 °C same, but derating starts earlier due to higher RthJC = 2.0 °C/W). | Acceptable in lower-frequency (<50 kHz), non-DCM PFC or general-purpose freewheeling where efficiency and EMI are less critical. | Choose MUR1560 only if cost sensitivity outweighs efficiency targets; VS-ETU1506-M3 delivers measurable improvement in 65+ kHz DCM PFC with tighter thermal margins. |
Compared with VS-ETU1506-M4, the -M3 offers identical performance in tube packaging ideal for prototyping and low-volume builds; versus MUR1560, it delivers 0.6 V lower VF and 26 ns faster trr - translating to ~1.2 W lower loss at 15 A and reduced snubber sizing in high-density PFC designs.
Availability
VS-ETU1506-M3 is available at Aetrix Electronics and suitable for laptop AC adapters, desktop PC ATX power supplies, and flat-panel TV power boards requiring stable component supply, consistent thermal performance, and JEDEC-qualified reliability.
Supply support for VS-ETU1506-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 and precision resistive technologies.
The FRED Pt® ultrafast rectifier product line - including VS-ETU1506-M3 - is engineered specifically for high-efficiency, high-frequency PFC and switching power supply applications demanding low loss, soft recovery, and thermal robustness.
FAQ
What is the maximum allowable case temperature for continuous operation of the VS-ETU1506-M3?
The VS-ETU1506-M3 supports continuous operation up to 151 °C case temperature when delivering its rated 15 A average forward current, as specified in the Absolute Maximum Ratings table. This limit is derived from thermal modeling that maintains junction temperature ≤175 °C with RthJC = 1.2–1.4 °C/W. Exceeding 151 °C case temperature requires derating per Figure 5 in the datasheet.
Does the VS-ETU1506-M3 have a built-in thermal pad, and is it electrically isolated?
Yes, the VS-ETU1506-M3 uses a TO-220AC 2L package with a metal base (lead 3) that functions as both a thermal pad and an electrical tie to the cathode (lead 2). It is not electrically isolated - the base is cathode-connected, so the heatsink must be insulated or referenced to the cathode potential to prevent short circuits.
How does the VS-ETU1506-M3's reverse recovery charge (Qrr) compare at elevated temperature?
Qrr increases significantly with temperature: from 107 nC (typ.) at 25 °C to 430 nC (typ.) at 125 °C and 730 nC (typ.) at 125 °C under high dIF/dt (800 A/μs). This rise directly impacts switching loss and snubber design - systems operating near 125 °C junction must account for >6× higher stored charge versus room-temperature characterization.
Can the VS-ETU1506-M3 be used as a freewheeling diode in synchronous rectification topologies?
Yes, the VS-ETU1506-M3 is explicitly intended for freewheeling use in power supplies and switching applications. Its soft recovery and low Qrr minimize voltage spikes and cross-conduction risk when paired with MOSFETs in quasi-resonant or LLC converters - though it is not a synchronous rectifier itself and requires external gate control for active rectification.
What is the meaning of the "-M3" suffix in VS-ETU1506-M3?
The "-M3" suffix denotes Vishay's environmental compliance grade: halogen-free, RoHS-compliant, and lead (Pb)-free terminations. It reflects material composition and plating specifications per Vishay document 95391, with no electrical or thermal performance difference from non-M3 variants - only regulatory and assembly compatibility distinctions.
VS-ETU1506-M3 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- FRED Pt®
- Package/Case:
- TO-220-2
- Packaging:
- Bulk
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 600 V
- Current - Average Rectified (Io):
- 15A
- Voltage - Forward (Vf) (Max) @ If:
- 1.9 V @ 15 A
- Speed:
- Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 40 ns
- Current - Reverse Leakage @ Vr:
- 15 µA @ 600 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220AC
- Operating Temperature - Junction:
- -65°C ~ 175°C
VS-ETU1506-M3 FAQ
1.How can I place an order for VS-ETU1506-M3 through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-ETU1506-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-ETU1506-M3 reliable?
The price and inventory of VS-ETU1506-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-ETU1506-M3 is usually 5 days.
3.What payment methods are accepted for VS-ETU1506-M3?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-ETU1506-M3 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-ETU1506-M3?
VS-ETU1506-M3 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-ETU1506-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-ETU1506-M3?
For technical support, including VS-ETU1506-M3 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-ETU1506-M3 requirements.
6.How does Aetrix verify that VS-ETU1506-M3 is sourced from the original manufacturer or authorized distributors?
All VS-ETU1506-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-ETU1506-M3 meets industry standards.
7.What is the process for return or replacement of VS-ETU1506-M3?
All VS-ETU1506-M3 units undergo pre-shipment inspection (PSI). If there is an issue with VS-ETU1506-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-ETU1506-M3 part is unused and in its original packaging.
Return procedure for VS-ETU1506-M3:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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