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Vishay General Semiconductor - Diodes Division VS-150K30A
- Part No.:
- VS-150K30A
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- Single Diodes
- Package:
- DO-205AA, DO-8, Stud
- Datasheet:
-
VS-150K30A.pdf
- Description:
- DIODE GEN PURP 300V 150A DO205AA
- Quantity:
- Payment:
- Shipping:
Inventory:4,541
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Product details
Overview
VS-150K30A from Vishay is a stud-mount standard recovery power diode with 300 V maximum repetitive peak reverse voltage (VRRM), 150 A average forward current (IF(AV)), and 0.25 K/W junction-to-case thermal resistance - designed for high-current freewheeling, battery charging, and industrial welder rectification circuits.
For engineers reviewing the VS-150K30A datasheet, VS-150K30A pinout, VS-150K30A application, or VS-150K30A equivalent, key selection criteria include its DO-205AA (DO-8) stud package, 3740 A 60 Hz non-repetitive surge rating, 1.33 V forward voltage at 471 A, and cathode-to-stud polarity configuration.
Technical Context
This diode operates as a unidirectional, high-current rectifier in line-frequency (50/60 Hz) power conversion systems. Its alloy-junction construction enables stable operation up to 200 °C junction temperature and supports DC or phase-controlled conduction angles down to 30° without derating beyond thermal limits.
The device uses a stud-anode (R-suffix) configuration - meaning the anode connects directly to the mounting stud - requiring insulated mounting hardware when used in grounded-cathode topologies. Thermal performance is defined by RthJC = 0.25 K/W under DC conditions and degrades predictably with reduced conduction angle per Figure 1.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 300 V maximum repetitive peak reverse voltage - sets minimum blocking capability in AC line rectifiers and DC link protection circuits |
| IF(AV) | 150 A average forward current at 150 °C case temperature - defines continuous DC output capability with appropriate heatsinking |
| IFSM (60 Hz) | 3740 A non-repetitive surge current - supports short-duration inrush and fault currents in welders and motor drives |
| RthJC | 0.25 K/W junction-to-case thermal resistance - determines minimum heatsink requirement for 200 °C max TJ operation |
| VFM | 1.33 V forward voltage drop at 471 A peak, 25 °C - establishes conduction loss baseline for efficiency calculations |
| TJ Range | -40 to 200 °C operating and storage temperature - qualified for industrial environments including machine tool controls and traction systems |
Pinout & Package
VS-150K30A uses a DO-205AA (DO-8) stud package with two terminals: anode connected to the threaded stud body, and cathode accessible via an insulated stud nut or separate terminal. Mounting torque is 9.5–12.5 N·m for lubricated threads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Stud Body | Anode | Primary high-current input terminal; must be electrically isolated from chassis unless circuit topology permits direct grounding |
| Insulated Nut / Terminal | Cathode | Output terminal; requires secure mechanical connection and low-inductance routing for freewheeling paths |
Key Features
| Feature | Design Value |
|---|---|
| Alloy-junction construction | Enables reliable operation at 200 °C junction temperature without parameter drift or premature failure |
| Stud-anode (R) polarity | Allows direct mounting to heatsinks while keeping cathode electrically isolated - simplifies layout in high-side switch configurations |
| High I²t rating (58 kA²s @ 60 Hz) | Provides robust short-circuit withstand capability in motor drive DC links and UPS inverters |
| RoHS-compliant packaging | Meets industrial environmental compliance requirements without sacrificing thermal or electrical performance |
Applications
| Battery Chargers | Industrial Welders |
|---|---|
Use Scenario: High-current AC-to-DC conversion in multi-kW battery charging systems for EV infrastructure and industrial motive power. IC Role / Device Role / Timing Role: Main rectifier diode in three-phase bridge configuration, handling continuous 150 A average load current. Use Value: Low 0.25 K/W RthJC enables compact heatsink design; 3740 A IFSM accommodates transformer inrush without fuse coordination issues. | Use Scenario: Primary rectification in medium-duty resistance and arc welding equipment with intermittent high-current duty cycles. IC Role / Device Role / Timing Role: Output stage diode in thyristor-controlled DC welder power supplies, conducting 10–30 ms pulses at >300 A peak. Use Value: 58 kA²s I²t rating ensures survival during repeated short-circuit events; 200 °C TJ rating sustains reliability under forced-air-limited cooling. |
| Machine Tool Controls | Freewheeling Diodes |
Use Scenario: DC bus regeneration and braking energy dissipation in CNC servo amplifier cabinets. IC Role / Device Role / Timing Role: Freewheeling path for inductive motor windings during PWM switching transitions in 400 V DC link systems. Use Value: 300 V VRRM provides sufficient margin above 400 V DC bus; stud-anode configuration allows direct heatsink mounting on metal chassis. | Use Scenario: Inductive load suppression in high-power solenoid, contactor, and relay driver modules. IC Role / Device Role / Timing Role: Reverse-biased clamp diode across 150 A DC coils, conducting stored energy during turn-off transients. Use Value: 150 A IF(AV) rating matches coil hold current; 1.33 V VFM minimizes clamp loss and thermal stress during frequent switching. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current standard recovery diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IXYS D150KA30 | Same 300 V VRRM, 150 A IF(AV), but TO-247AC package with isolated tab; higher RthJC (0.35 K/W) | Requires PCB-mount heatsinking instead of stud mounting; less suitable for chassis-integrated welder designs | Select when board-level integration and isolation are prioritized over mechanical ruggedness and thermal interface simplicity |
| Vishay VS-150KS30A | Same electrical specs, but B-42 package with cathode-to-stud polarity and different mounting thread (M12 x 1.75) | Designed for bolt-through heatsink mounting with cathode grounding; incompatible stud interface geometry | Select when system architecture mandates cathode-grounded rectifier mounting and M12 fastening is standardized |
Compared with VS-150K30A, D150KA30 offers PCB compatibility at the cost of thermal performance, while VS-150KS30A maintains identical electrical behavior but reverses polarity and changes mechanical interface - neither is pin-compatible, and both require layout or mounting redesign.
Availability
VS-150K30A is available at Aetrix Electronics and suitable for battery chargers, industrial welders, and machine tool controls requiring stable component supply across long production lifecycles and high-temperature operating environments.
Supply support for VS-150K30A 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 for industrial, automotive, and computing applications.
The 150K(R) series is part of Vishay High Power Products' standard recovery diode family, engineered for rugged, high-current rectification in line-frequency power systems where reliability under thermal and surge stress is critical.
FAQ
What is the mounting polarity configuration of the VS-150K30A?
The VS-150K30A features stud-anode (R-suffix) polarity: the anode is electrically connected to the threaded stud body, while the cathode is accessed via the insulated nut or separate terminal. This configuration requires electrical isolation of the stud from the heatsink unless the circuit topology intentionally grounds the anode. Mounting torque must be maintained between 9.5–12.5 N·m for lubricated threads to ensure thermal and mechanical integrity. The VS-150K30A datasheet confirms this polarity in the ordering information table and mechanical drawings.
What is the maximum allowable junction temperature for VS-150K30A, and how does it affect thermal design?
The VS-150K30A has a maximum junction temperature (TJ) of 200 °C, validated for industrial-grade operation. This rating directly determines heatsink sizing: with RthJC = 0.25 K/W and typical RthCS = 0.10 K/W, a 100 °C ambient system requires ≤0.65 K/W total thermal resistance to stay within limit. Derating curves in Figures 1–3 show that average current must be reduced below 150 A if conduction angle falls below 180° or case temperature exceeds 150 °C. The VS-150K30A thermal model is fully documented in Revision 21-May-08 of Document Number 93489.
Can VS-150K30A replace VS-150KS30A in an existing design?
No - VS-150K30A cannot directly replace VS-150KS30A without mechanical and electrical redesign. While both share identical VRRM (300 V), IF(AV) (150 A), and electrical characteristics, VS-150KS30A uses a B-42 package with cathode-to-stud polarity and M12 x 1.75 threading, whereas VS-150K30A uses DO-205AA (DO-8) with anode-to-stud polarity and different thread dimensions. The VS-150K30A mounting interface and polarity are incompatible with VS-150KS30A's footprint and grounding scheme.
What is the forward voltage drop specification for VS-150K30A under real operating conditions?
The VS-150K30A specifies VFM = 1.33 V at Ipk = 471 A, TJ = 25 °C, and tp = 10 ms sinusoidal pulse - representing worst-case conduction loss during transient overload. At rated 150 A average current and 150 °C case temperature, forward drop rises to approximately 1.15 V due to temperature coefficient effects. The device also defines two threshold voltages (VF(TO)1 = 0.67 V, VF(TO)2 = 0.83 V) and slope resistances (rf1 = 1.42 mΩ, rf2 = 0.91 mΩ), enabling accurate loss modeling across operating ranges. All values are measured per the test conditions in Document Number 93489.
Is VS-150K30A RoHS compliant, and what does that mean for industrial use?
Yes, VS-150K30A is RoHS compliant as confirmed in the "Features" section of Document Number 93489. This means it contains no lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyls (PBB), or polybrominated diphenyl ethers (PBDE) above threshold limits, satisfying EU Directive 2011/65/EU. For industrial users, RoHS compliance ensures environmental safety during manufacturing, repair, and end-of-life disposal - without compromising the VS-150K30A's 200 °C junction rating, 3740 A surge capability, or alloy-junction reliability in welders and battery chargers.
VS-150K30A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Series:
- -
- Package/Case:
- DO-205AA, DO-8, Stud
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 300 V
- Current - Average Rectified (Io):
- 150A
- Voltage - Forward (Vf) (Max) @ If:
- 1.33 V @ 471 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 35 mA @ 300 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis, Stud Mount
- Supplier Device Package:
- DO-205AA (DO-8)
- Operating Temperature - Junction:
- -40°C ~ 200°C
VS-150K30A FAQ
1.How can I place an order for VS-150K30A through Aetrix?
Please submit a Request for Quotation (RFQ) for VS-150K30A 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-150K30A reliable?
The price and inventory of VS-150K30A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-150K30A is usually 5 days.
3.What payment methods are accepted for VS-150K30A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-150K30A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VS-150K30A?
VS-150K30A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VS-150K30A 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-150K30A?
For technical support, including VS-150K30A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-150K30A requirements.
6.How does Aetrix verify that VS-150K30A is sourced from the original manufacturer or authorized distributors?
All VS-150K30A 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-150K30A meets industry standards.
7.What is the process for return or replacement of VS-150K30A?
All VS-150K30A units undergo pre-shipment inspection (PSI). If there is an issue with VS-150K30A, 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-150K30A part is unused and in its original packaging.
Return procedure for VS-150K30A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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