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

Vishay General Semiconductor - Diodes Division VS-1N3209

Name: VS-1N3209
Brand: Vishay General Semiconductor - Diodes Division
SKU: VS-1N3209
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VS-1N3209

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Diodes

Package:: DO-203AB, DO-5, Stud

Datasheet:: VS-1N3209.pdf

Description:: DIODE GEN PURP 100V 15A DO203AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,442

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Product details

Overview

VS-1N3209 from Vishay Semiconductors is a silicon stud-mount rectifier diode rated for 15 A average forward current, 100 V maximum repetitive peak reverse voltage (V_RRM), and 150 °C case temperature, designed for high-reliability industrial power conversion in transformer-coupled AC/DC supplies and motor drive snubbers.

For engineers reviewing the VS-1N3209 datasheet, VS-1N3209 pinout, VS-1N3209 application, or VS-1N3209 equivalent, key selection criteria include thermal impedance (0.65 °C/W junction-to-case), I²t fusing rating (286 A²s at 10 ms), forward voltage drop (1.5 V at 15 A/150 °C), and DO-5 (DO-203AB) stud package with threaded 1/4"-28UNF-2A mounting.

Technical Context

The VS-1N3209 operates as a single-junction, planar-diffused silicon rectifier optimized for high-current, high-temperature operation in line-frequency (50/60 Hz) power circuits. Its low R_thJC (0.65 °C/W) and high T_C rating (150 °C) enable direct mounting to heatsinks without thermal interface pads in high-power linear supplies.

It supports non-repetitive surge currents up to 250 A (60 Hz half-cycle) and delivers stable reverse blocking up to 100 V across its full operating junction temperature range (-65 °C to +175 °C), with IR(AV) limited to 10 mA at 150 °C case temperature.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	100 V - Maximum repetitive reverse voltage the device blocks reliably in AC line applications without breakdown
I_F(AV)	15 A - Continuous DC output current capability when mounted on heatsink at 150 °C case temperature
V_FM	1.5 V - Forward voltage drop at 15 A average / 47.1 A peak conduction, defining conduction loss in power stage
R_thJC	0.65 °C/W - Junction-to-case thermal resistance enabling efficient heat transfer to metal heatsink via stud mount
I²t (10 ms)	286 A²s - Fusing energy rating used to coordinate with upstream fuse selection for short-circuit protection
T_J Range	-65 °C to +175 °C - Full operational junction temperature range supporting harsh industrial environments
I_R(AV)	10 mA - Average reverse leakage at max case temperature, critical for hold-up capacitor discharge management

Pinout & Package

VS-1N3209 uses the DO-5 (DO-203AB) stud-mount package: a hermetically sealed, axial-leaded, threaded metal case where the cathode is electrically connected to the case and mounting stud. The anode is accessed via the axial lead.

Pin/Terminal	Circuit Role	Design Meaning
Cathode (Case/Stud)	Reverse-biased terminal during conduction	Electrically bonded to metal case; must be isolated from chassis unless circuit ground reference requires common-cathode configuration
Anode (Axial Lead)	Forward-biased terminal during conduction	Insulated wire lead terminating in solder lug or ring terminal; carries full load current into rectifier input

Key Features

Feature	Design Value
Low thermal impedance	0.65 °C/W R_thJC enables direct stud mounting to heatsinks without thermal pads in high-power linear supplies
High case temperature rating	150 °C continuous operation allows integration into compact, convection-cooled industrial enclosures
JEDEC-registered reliability	Complies with JEDEC® standards for surge, thermal cycling, and long-term stability in mission-critical power systems
Stud-mount mechanical interface	1/4"-28UNF-2A threaded stud supports secure, low-contact-resistance attachment to holed heatsinks per datasheet recommendation

Applications

Industrial AC/DC Power Supplies	Motor Drive Input Rectification
Use Scenario: Transformer-fed linear power supply delivering regulated ±15 V/10 A for PLC I/O modules. IC Role / Device Role / Timing Role: Primary rectifier converting 24 VAC secondary to unregulated DC bus prior to linear regulation. Use Value: 15 A I_F(AV) and 150 °C T_C rating allow sustained operation without forced air cooling in sealed cabinets.	Use Scenario: Six-pulse rectifier front-end in 3 kW variable frequency drive feeding inverter stage. IC Role / Device Role / Timing Role: Line-frequency diode bridge leg handling 15 A RMS input current under continuous load. Use Value: 250 A I_FSM (60 Hz) withstands motor startup surges without degradation.
Welding Equipment DC Bus	DC Power Distribution Panels
Use Scenario: High-current DC bus generation in resistance spot welder with 100 ms duty cycle. IC Role / Device Role / Timing Role: Main rectifier supplying 12 V/500 A pulsed DC to welding transformer primary. Use Value: 286 A²s I²t rating ensures coordination with fast-acting DC fuses during short-duration overloads.	Use Scenario: Centralized 48 V DC distribution in telecom rack with redundant AC inputs. IC Role / Device Role / Timing Role: OR-ing diode in dual-feed rectifier bank isolating failed input while maintaining output. Use Value: Low 1.5 V V_FM minimizes forward conduction loss and thermal rise in parallel diode configurations.

Industrial AC/DC Power Supplies

Motor Drive Input Rectification

Use Scenario: Transformer-fed linear power supply delivering regulated ±15 V/10 A for PLC I/O modules.

IC Role / Device Role / Timing Role: Primary rectifier converting 24 VAC secondary to unregulated DC bus prior to linear regulation.

Use Value: 15 A I_F(AV) and 150 °C T_C rating allow sustained operation without forced air cooling in sealed cabinets.

Use Scenario: Six-pulse rectifier front-end in 3 kW variable frequency drive feeding inverter stage.

IC Role / Device Role / Timing Role: Line-frequency diode bridge leg handling 15 A RMS input current under continuous load.

Use Value: 250 A I_FSM (60 Hz) withstands motor startup surges without degradation.

Welding Equipment DC Bus

DC Power Distribution Panels

Use Scenario: High-current DC bus generation in resistance spot welder with 100 ms duty cycle.

IC Role / Device Role / Timing Role: Main rectifier supplying 12 V/500 A pulsed DC to welding transformer primary.

Use Value: 286 A²s I²t rating ensures coordination with fast-acting DC fuses during short-duration overloads.

Use Scenario: Centralized 48 V DC distribution in telecom rack with redundant AC inputs.

IC Role / Device Role / Timing Role: OR-ing diode in dual-feed rectifier bank isolating failed input while maintaining output.

Use Value: Low 1.5 V V_FM minimizes forward conduction loss and thermal rise in parallel diode configurations.

Equivalent & Alternatives

The following parts are listed as comparable options for similar rectifier diode applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
VS-1N3208	50 V V_RRM, identical I_F(AV), R_thJC, and package	Suitable only for ≤50 V AC input designs (e.g., 36 VAC transformers)	Select VS-1N3208 when lower reverse voltage suffices and cost optimization is prioritized
VS-1N3210	200 V V_RRM, same thermal and current ratings, DO-5 package	Required for 115 VAC or 230 VAC direct rectification with safety margin	Choose VS-1N3210 when system-level transient overvoltage or higher input voltage mandates ≥200 V blocking

Compared with VS-1N3208 and VS-1N3210, the VS-1N3209 provides optimal balance of 100 V reverse rating and 15 A current capacity for 120 VAC-derived supplies-neither over-specified nor marginal-while sharing identical thermal performance and mechanical fit.

Availability

VS-1N3209 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, motor drive input rectification, welding equipment DC bus generation, and DC power distribution panels requiring stable component supply and long-lifecycle support.

Supply support for VS-1N3209 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 industrial, automotive, and computing applications.

The VS-1N3209 belongs to Vishay's stud-mount silicon rectifier family engineered for high-current, high-temperature line-frequency power conversion in ruggedized industrial systems.

FAQ

What is the maximum case temperature rating for VS-1N3209?

The VS-1N3209 is rated for continuous operation at a maximum case temperature (T_C) of 150 °C. This specification is defined under DC conduction with 15 A average forward current and is validated per JEDEC® test conditions. Maintaining case temperature at or below this limit ensures reliable long-term performance and prevents thermal runaway in the VS-1N3209.

Does VS-1N3209 have a cathode-to-case or anode-to-case configuration?

The VS-1N3209 has a cathode-to-case configuration, meaning the metal stud and case are electrically connected to the cathode terminal. This is standard for the VS-1N3208 Series; anode-to-case variants require "R" suffix (e.g., VS-1N3209R). Proper isolation of the stud from chassis ground is required unless the circuit design explicitly references the cathode to system ground.

What is the forward voltage drop of VS-1N3209 under rated conditions?

The VS-1N3209 exhibits a maximum forward voltage drop (V_FM) of 1.5 V when conducting 15 A average forward current at a case temperature of 150 °C. This value is measured under 180° sinusoidal conduction and defines the dominant conduction loss in power supply designs using the VS-1N3209.

Can VS-1N3209 be used in 60 Hz rectifier applications?

Yes, the VS-1N3209 is fully qualified for 60 Hz line-frequency rectification. Its non-repetitive surge current rating is 250 A for a half-cycle 60 Hz sine wave, and its I²t fusing rating (260 A²s at 8.3 ms) is specified for 60 Hz operation. These parameters confirm suitability for North American and other 60 Hz grid-connected power systems using the VS-1N3209.

What is the thermal resistance from junction to case for VS-1N3209?

The VS-1N3209 has a maximum junction-to-case thermal resistance (R_thJC) of 0.65 °C/W under DC operation. This low value enables efficient heat extraction through the stud mount and is critical for achieving the full 15 A current rating without forced cooling. It is measured with the device mounted to a smooth, flat, greased heatsink surface.

VS-1N3209 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: DO-203AB, DO-5, Stud

Packaging:: Bulk

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 100 V

Current - Average Rectified (Io):: 15A

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 15 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 mA @ 100 V

Capacitance @ Vr, F:: -

Grade:: -

Qualification:: -

Mounting Type:: Chassis, Stud Mount

Supplier Device Package:: DO-203AB (DO-5)

Operating Temperature - Junction:: -65°C ~ 175°C

VS-1N3209 FAQ

1.How can I place an order for VS-1N3209 through Aetrix?

Please submit a Request for Quotation (RFQ) for VS-1N3209 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-1N3209 reliable?

The price and inventory of VS-1N3209 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-1N3209 is usually 5 days.

3.What payment methods are accepted for VS-1N3209?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-1N3209 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VS-1N3209?

VS-1N3209 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VS-1N3209 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-1N3209?

For technical support, including VS-1N3209 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-1N3209 requirements.

6.How does Aetrix verify that VS-1N3209 is sourced from the original manufacturer or authorized distributors?

All VS-1N3209 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-1N3209 meets industry standards.

7.What is the process for return or replacement of VS-1N3209?

All VS-1N3209 units undergo pre-shipment inspection (PSI). If there is an issue with VS-1N3209, 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-1N3209 part is unused and in its original packaging.

Return procedure for VS-1N3209:

1.Submit a request within 90 days.

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

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