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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Vishay General Semiconductor - Diodes Division VS-150KR20A

Name: VS-150KR20A
Brand: Vishay General Semiconductor - Diodes Division
SKU: VS-150KR20A
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VS-150KR20A

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: DO-205AA, DO-8, Stud

Datasheet:: VS-150KR20A.pdf

Description:: DIODE GEN PURP 200V 150A DO205AA

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Product details

Overview

VS-150KR20A from Vishay is a stud-mount standard recovery power diode with 200 V maximum repetitive peak reverse voltage (V_RRM), 150 A average forward current (I_F(AV)), and 3740 A 60 Hz non-repetitive surge capability - designed for high-current freewheeling and rectification in industrial welders, battery chargers, and medium-traction drives.

For engineers reviewing the VS-150KR20A datasheet, VS-150KR20A pinout, VS-150KR20A application, or VS-150KR20A equivalent, key selection criteria include its stud-anode polarity (R suffix), DO-205AA (DO-8) package, 0.25 K/W junction-to-case thermal resistance, and verified operation up to 200 °C junction temperature under 180° conduction.

Technical Context

This device belongs to Vishay's 150K(R) series of alloy-junction, stud-mounted standard recovery diodes - engineered for high-surge, high-thermal-stress environments where fast recovery is not required but robustness and thermal stability are critical. It uses a metal-to-metal stud interface for direct heatsink mounting and features a reverse-polarity configuration (anode-to-stud).

The VS-150KR20A operates with a low forward voltage drop of 1.33 V at 471 A peak and 25 °C, supported by dual threshold/slope parameters (V_F(TO)1 = 0.67 V, r_f1 = 1.42 mΩ) that define conduction behavior across load ranges - enabling accurate power loss modeling in high-current DC/AC line-frequency applications.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	200 V - Maximum repetitive reverse blocking voltage; defines safe operating limit in rectifier/freewheeling circuits with 200 V DC bus or AC line peaks.
I_F(AV)	150 A - Average forward current at 150 °C case temperature; sets continuous conduction rating for 180° half-sine wave operation.
I_F(RMS)	235 A - RMS forward current at 142 °C case; used for thermal design of heatsinks under DC or near-DC loads.
I_FSM (60 Hz)	3740 A - Non-repetitive surge current for 8.3 ms; determines short-circuit withstand capability in welder or drive output stages.
R_thJC	0.25 K/W - Junction-to-case thermal resistance under DC operation; enables precise junction temperature calculation when mounted to heatsink.
V_FM	1.33 V - Forward voltage at 471 A peak, 25 °C, 10 ms - directly impacts conduction losses and thermal loading in high-current switching nodes.
T_J Range	–40 to +200 °C - Full operational junction temperature range; supports deployment in harsh industrial environments without derating below –40 °C.

Pinout & Package

VS-150KR20A uses a two-terminal stud-mount package (DO-205AA / DO-8) with anode connected to the stud and cathode accessible via an insulated terminal. Mounting torque: 9.5–12.5 N·m (85–110 lbf·in) for lubricated threads.

Pin/Terminal	Circuit Role	Design Meaning
Anode Stud	Forward current entry point	Mechanically and electrically bonded to heatsink; requires insulating washer if heatsink is grounded; defines reverse-polarity mounting (R suffix).
Cathode Terminal	Forward current exit point	Insulated M6 threaded stud or lug; connects to load/return path; must maintain creepage/clearance per IEC 61800-5-1 in drive applications.

Key Features

Feature	Design Value
Stud-anode reverse polarity (R)	Enables direct anode-to-heatsink connection for simplified thermal management in high-side switch configurations.
Alloy-junction construction	Delivers stable forward characteristics and high surge tolerance without degradation over repeated thermal cycling.
200 °C maximum junction temperature	Supports operation in enclosed cabinets or high-ambient environments without forced air cooling in many industrial settings.
RoHS-compliant materials	Meets EU Directive 2011/65/EU for lead-free soldering compatibility and environmental compliance in OEM production.
0.10 K/W case-to-heatsink resistance	Validated with smooth, flat, greased mounting surface - enables accurate thermal simulation using standard conduction models.

Applications

Battery Chargers	Industrial Welders
Use Scenario: High-current AC-to-DC conversion in multi-kW battery charging systems for EV fleet infrastructure and industrial motive power. IC Role / Device Role / Timing Role: Main rectifier diode in single-phase or three-phase bridge configurations handling 150 A continuous output. Use Value: Low R_thJC (0.25 K/W) and high I_FSM (3740 A) ensure reliable operation during charge-cycle surges and thermal transients.	Use Scenario: Output rectification in transformer-rectifier welder power supplies delivering intermittent 1000+ A DC welding current. IC Role / Device Role / Timing Role: Freewheeling and rectification element in thyristor-controlled or inverter-fed DC weld outputs. Use Value: 200 °C T_J rating and 3740 A surge capacity sustain performance through repetitive arc ignition events without thermal runaway.
Machine Tool Controls	Medium Traction Drives
Use Scenario: Regenerative braking and DC bus protection in CNC machine spindle and feed-axis servo amplifiers. IC Role / Device Role / Timing Role: Freewheeling diode across IGBT or SCR output stages to clamp inductive kickback. Use Value: Robust V_RRM (200 V) and low V_FM (1.33 V) minimize energy dissipation and voltage overshoot during rapid current reversal.	Use Scenario: DC link rectification and motor-field supply in 30–100 kW rail traction converters and mining vehicle propulsion systems. IC Role / Device Role / Timing Role: High-current, line-frequency rectifier in uncontrolled or semi-controlled bridge topologies. Use Value: Stud-anode (R) mounting simplifies thermal integration into chassis-grounded power modules while maintaining isolation integrity.

Battery Chargers

Industrial Welders

Use Scenario: High-current AC-to-DC conversion in multi-kW battery charging systems for EV fleet infrastructure and industrial motive power.

IC Role / Device Role / Timing Role: Main rectifier diode in single-phase or three-phase bridge configurations handling 150 A continuous output.

Use Value: Low R_thJC (0.25 K/W) and high I_FSM (3740 A) ensure reliable operation during charge-cycle surges and thermal transients.

Use Scenario: Output rectification in transformer-rectifier welder power supplies delivering intermittent 1000+ A DC welding current.

IC Role / Device Role / Timing Role: Freewheeling and rectification element in thyristor-controlled or inverter-fed DC weld outputs.

Use Value: 200 °C T_J rating and 3740 A surge capacity sustain performance through repetitive arc ignition events without thermal runaway.

Machine Tool Controls

Medium Traction Drives

Use Scenario: Regenerative braking and DC bus protection in CNC machine spindle and feed-axis servo amplifiers.

IC Role / Device Role / Timing Role: Freewheeling diode across IGBT or SCR output stages to clamp inductive kickback.

Use Value: Robust V_RRM (200 V) and low V_FM (1.33 V) minimize energy dissipation and voltage overshoot during rapid current reversal.

Use Scenario: DC link rectification and motor-field supply in 30–100 kW rail traction converters and mining vehicle propulsion systems.

IC Role / Device Role / Timing Role: High-current, line-frequency rectifier in uncontrolled or semi-controlled bridge topologies.

Use Value: Stud-anode (R) mounting simplifies thermal integration into chassis-grounded power modules while maintaining isolation integrity.

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
VS-150K20A	Normal polarity (cathode-to-stud); same V_RRM, I_F(AV), and package; no R suffix.	Requires insulated stud mount when anode must be isolated; less suitable for anode-grounded topologies.	Select VS-150K20A only when cathode-to-heatsink mounting is preferred or existing mechanical layout mandates it.
VS-150KS20A	B-42 package (not DO-205AA); identical electrical specs; different stud geometry and mounting footprint.	Not mechanically interchangeable; requires PCB/heatsink redesign due to larger B-42 outline and M10 stud thread.	Choose VS-150KS20A only when higher thermal mass or alternate mounting interface is needed and layout allows rework.

Compared with VS-150K20A and VS-150KS20A, the VS-150KR20A uniquely enables anode-to-heatsink thermal coupling without insulation, reducing thermal impedance and simplifying heatsink grounding in high-power rectifier bridges - making it optimal for space-constrained, high-efficiency industrial power conversion.

Availability

VS-150KR20A is available at Aetrix Electronics and suitable for battery chargers, industrial welders, and medium traction drives requiring stable component supply, long-term industrial lifecycle support, and RoHS-compliant high-current diodes.

Supply support for VS-150KR20A 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 and passive component manufacturer specializing in high-reliability discrete power devices, sensors, and resistive solutions for industrial, automotive, and computing markets.

The 150K(R) series was developed specifically for ruggedized, high-current industrial rectification and freewheeling - prioritizing thermal robustness, surge immunity, and mechanical durability over switching speed.

FAQ

What does the "R" suffix in VS-150KR20A indicate?

The "R" suffix denotes reverse polarity - meaning the anode is connected to the stud, while the cathode is accessible via the insulated terminal. This configuration allows direct anode-to-heatsink mounting, simplifying thermal design in high-side rectifier or freewheeling positions. The VS-150KR20A must be installed with appropriate electrical isolation between stud and heatsink unless the system design intentionally grounds the anode.

What is the maximum allowable case temperature for continuous operation of VS-150KR20A?

The VS-150KR20A supports continuous operation at a maximum case temperature of 150 °C for its rated 150 A average forward current (I_F(AV)). At higher case temperatures, derating is required per Figure 1 in the datasheet. Its junction can safely reach 200 °C, but sustained case temperatures above 150 °C require verification of thermal interface quality and heatsink performance to avoid exceeding the 200 °C absolute maximum T_J.

Can VS-150KR20A be used in a three-phase full-wave rectifier bridge?

Yes, the VS-150KR20A is commonly deployed in three-phase full-wave rectifier bridges for industrial power supplies. Its 200 V V_RRM, 150 A I_F(AV), and 3740 A surge rating make it suitable for line-voltage applications up to ~280 V DC output (e.g., 200 V AC line). Thermal design must account for conduction angle and ambient conditions, and each VS-150KR20A must be mounted with proper torque (9.5–12.5 N·m) and thermal grease for reliable long-term operation.

How does the forward voltage of VS-150KR20A vary with current and temperature?

The VS-150KR20A exhibits a low-forward-voltage profile: V_F(TO)1 = 0.67 V and r_f1 = 1.42 mΩ at moderate currents (16.7% to 100% × π × I_F(AV)) and 200 °C junction temperature. At 471 A peak and 25 °C, V_FM = 1.33 V. Voltage increases slightly with temperature due to positive TC of silicon, but remains stable across its full operating range - critical for predictable conduction loss modeling in high-power designs.

Is VS-150KR20A compliant with RoHS and REACH regulations?

Yes, the VS-150KR20A is RoHS compliant per Directive 2011/65/EU, as confirmed in the official Vishay datasheet (Document Number 93489). It contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits. Vishay also confirms full REACH SVHC compliance - with no substances of very high concern above 0.1% w/w in homogeneous material, supporting unrestricted use in EU and global industrial supply chains.

VS-150KR20A 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, Reverse Polarity

Voltage - DC Reverse (Vr) (Max):: 200 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 @ 200 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-150KR20A FAQ

1.How can I place an order for VS-150KR20A through Aetrix?

Please submit a Request for Quotation (RFQ) for VS-150KR20A 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-150KR20A reliable?

The price and inventory of VS-150KR20A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-150KR20A is usually 5 days.

3.What payment methods are accepted for VS-150KR20A?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-150KR20A transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VS-150KR20A?

VS-150KR20A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VS-150KR20A 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-150KR20A?

For technical support, including VS-150KR20A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-150KR20A requirements.

6.How does Aetrix verify that VS-150KR20A is sourced from the original manufacturer or authorized distributors?

All VS-150KR20A 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-150KR20A meets industry standards.

7.What is the process for return or replacement of VS-150KR20A?

All VS-150KR20A units undergo pre-shipment inspection (PSI). If there is an issue with VS-150KR20A, 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-150KR20A part is unused and in its original packaging.

Return procedure for VS-150KR20A:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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