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Home > Products > Discrete Semiconductor Products > Diodes > Bridge Rectifiers

Vishay General Semiconductor - Diodes Division VS-KBPC604

Name: VS-KBPC604
Brand: Vishay General Semiconductor - Diodes Division
SKU: VS-KBPC604
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VS-KBPC604

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Bridge Rectifiers

Package:: 4-Square, D-72

Datasheet:: VS-KBPC604.pdf

Description:: BRIDGE RECT 1PHASE 400V 6A D-72

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Product details

Overview

VS-KBPC604 from Vishay Semiconductors is a single-phase silicon bridge rectifier rated for 6 A average output current and 400 V maximum repetitive peak reverse voltage (V_RRM). It features high surge current capability (137 A at 60 Hz), low forward voltage drop (1.2 V per diode at 3 A), and operates across -40 °C to +150 °C. It is used in AC/DC power supplies for industrial control panels and consumer appliance power stages.

For engineers reviewing the VS-KBPC604 datasheet, VS-KBPC604 pinout, VS-KBPC604 application, or VS-KBPC604 equivalent, key selection criteria include its D-72 package thermal performance, I²t fusing rating (71 A²s at 8.3 ms), capacitive-load derating (4.7 A), and compatibility with 40–1000 Hz input frequencies.

Technical Context

The VS-KBPC604 integrates four silicon junction diodes in a full-wave bridge configuration optimized for general-purpose AC-to-DC conversion. Its thermal resistance and case temperature derating curves are defined for both resistive/inductive and capacitive loads, with distinct IO ratings (6.0 A vs. 4.7 A) reflecting conduction-mode stress differences.

It supports non-repetitive surge currents up to 137 A (60 Hz, 16.7 ms) and delivers stable operation across 40–1000 Hz line frequencies. Reverse leakage remains ≤10 μA at 25 °C and ≤1.0 mA at 150 °C under full V_RRM, ensuring reliability in elevated ambient environments.

Key Specifications

Parameter	Value and Actual Design Meaning
I_O(AV)	6.0 A at T_C = 50 °C, resistive/inductive load - defines continuous DC output capability without forced cooling
V_RRM	400 V - maximum reverse voltage the device blocks repeatedly; sets max AC input RMS at 125 V
I_FSM	137 A at 60 Hz, 16.7 ms - surge withstand for brief line transients or motor-start currents
V_FM	1.2 V per diode at I_FM = 3.0 A, T_J = 25 °C - contributes ~2.4 V total forward drop in bridge conduction path
I²t	71 A²s at 8.3 ms - fusing energy threshold used for upstream fuse coordination
T_J Range	-40 °C to +150 °C - enables deployment in sealed industrial enclosures without active cooling
f	40–1000 Hz - supports standard utility (50/60 Hz), audio-frequency, and some SMPS PFC pre-regulator inputs

Pinout & Package

VS-KBPC604 uses the D-72 package: a molded plastic case with four axial leads arranged in a rectangular footprint (15.7 × 10.0 mm body, 25.4 mm min. lead length), designed for PCB through-hole mounting or chassis screw-terminal attachment.

Pin/Terminal	Circuit Role	Design Meaning
~ (AC1)	AC input terminal 1	One side of AC input winding; connects to transformer secondary or line filter output
~ (AC2)	AC input terminal 2	Other side of AC input winding; completes full-wave bridge AC path
+ (DC+)	Positive DC output	Anode of output diodes; feeds bulk capacitor or downstream regulator input
- (DC-)	Negative DC output / common return	Cathode of output diodes; serves as system ground reference for DC bus

Key Features

Feature	Design Value
High surge current rating	137 A peak (60 Hz, 16.7 ms) enables robustness against inrush and short-circuit events in unregulated supplies
Capacitive-load derated current	4.7 A at T_C = 50 °C - reflects higher conduction stress when feeding large bulk capacitors
Low thermal resistance design	Case temperature-limited operation allows >4 A output in natural-convection chassis-mount configurations
Wide operating temperature range	-40 °C to +150 °C junction rating supports use in automotive under-hood or industrial motor drive cabinets
Standard D-72 mechanical outline	Compatible with legacy KBPC footprints and automated through-hole assembly tooling

Applications

Industrial AC/DC Power Supplies	Consumer Appliance Motor Controls
Use Scenario: Converting 120 VAC mains to unregulated DC for PLC I/O modules and sensor power rails. IC Role / Device Role / Timing Role: Primary rectification stage delivering 6 A DC output before bulk filtering and regulation. Use Value: High I_FSM (137 A) absorbs transformer inrush and relay contact bounce without failure.	Use Scenario: Providing DC bus for universal motor speed controllers in washing machines and vacuum cleaners. IC Role / Device Role / Timing Role: Full-wave bridge rectifier feeding phase-angle controlled triac driver circuits. Use Value: 150 °C max junction temperature ensures reliability during extended high-torque cycles.
LED Driver Input Stages	DC Power Distribution Units
Use Scenario: Rectifying AC input in constant-current LED drivers for commercial lighting fixtures. IC Role / Device Role / Timing Role: Input-stage bridge converting 120/230 VAC to high-voltage DC for flyback primary-side switching. Use Value: Low V_FM (1.2 V/diode) reduces conduction loss and improves overall driver efficiency.	Use Scenario: Centralized AC-to-DC conversion in telecom rack power distribution units. IC Role / Device Role / Timing Role: Bulk rectifier supplying multiple downstream DC/DC converters in redundant power systems. Use Value: Standard D-72 footprint enables direct replacement in field-upgrade programs without board rework.

Industrial AC/DC Power Supplies

Consumer Appliance Motor Controls

Use Scenario: Converting 120 VAC mains to unregulated DC for PLC I/O modules and sensor power rails.

IC Role / Device Role / Timing Role: Primary rectification stage delivering 6 A DC output before bulk filtering and regulation.

Use Value: High I_FSM (137 A) absorbs transformer inrush and relay contact bounce without failure.

Use Scenario: Providing DC bus for universal motor speed controllers in washing machines and vacuum cleaners.

IC Role / Device Role / Timing Role: Full-wave bridge rectifier feeding phase-angle controlled triac driver circuits.

Use Value: 150 °C max junction temperature ensures reliability during extended high-torque cycles.

LED Driver Input Stages

DC Power Distribution Units

Use Scenario: Rectifying AC input in constant-current LED drivers for commercial lighting fixtures.

IC Role / Device Role / Timing Role: Input-stage bridge converting 120/230 VAC to high-voltage DC for flyback primary-side switching.

Use Value: Low V_FM (1.2 V/diode) reduces conduction loss and improves overall driver efficiency.

Use Scenario: Centralized AC-to-DC conversion in telecom rack power distribution units.

IC Role / Device Role / Timing Role: Bulk rectifier supplying multiple downstream DC/DC converters in redundant power systems.

Use Value: Standard D-72 footprint enables direct replacement in field-upgrade programs without board rework.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
GBU6K	Same V_RRM (400 V), lower I_O(AV) (4.5 A), smaller GBU package (lower thermal mass)	Suitable for space-constrained designs with <4.5 A continuous load and adequate heatsinking	Select GBU6K only if board area is critical and thermal margin permits lower current rating
W04M	Same V_RRM (400 V), same I_O(AV) (6 A), but WOB package with different lead spacing and lower I_FSM (100 A)	Better suited for cost-sensitive consumer products where surge immunity is less demanding	Choose W04M for high-volume production where D-72 footprint flexibility is not required

Compared with VS-KBPC604, GBU6K offers smaller size but reduced thermal capacity and surge handling, while W04M matches current rating but sacrifices 27 % surge margin and uses a non-interchangeable package-making VS-KBPC604 preferable for industrial applications requiring proven D-72 mechanical robustness and transient resilience.

Availability

VS-KBPC604 is available at Aetrix Electronics and suitable for industrial AC/DC power supplies, consumer appliance motor controls, LED driver input stages, and DC power distribution units requiring stable component supply and long-term manufacturability.

Supply support for VS-KBPC604 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 manufacturer of discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and optoelectronics with emphasis on reliability and power-handling capability.

The VS-KBPC6 series belongs to Vishay's general-purpose silicon bridge rectifier product line, engineered for cost-effective, thermally robust AC/DC conversion in industrial, appliance, and lighting applications.

FAQ

What is the maximum allowable case temperature for continuous operation of the VS-KBPC604?

The VS-KBPC604 is rated for 6.0 A average output current at a case temperature (T_C) of 50 °C with resistive or inductive loads. Its thermal derating curve shows usable output current decreases linearly above this point, reaching zero at approximately 140 °C case temperature. Operation beyond 140 °C risks irreversible junction damage, so heatsinking or airflow must maintain T_C ≤ 140 °C under full load. The VS-KBPC604 datasheet provides precise derating graphs for both resistive/inductive and capacitive load conditions.

Does the VS-KBPC604 support 230 VAC input applications?

Yes, the VS-KBPC604 supports 230 VAC input when used with appropriate safety margins. Its V_RRM is 400 V, which exceeds the peak voltage of 230 VAC (≈325 V). However, designers must ensure transient overvoltages (e.g., lightning surges or switching spikes) remain below 400 V, and consider using an upstream MOV or TVS for protection. For sustained 230 VAC operation, the VS-KBPC604 delivers up to 4.7 A under capacitive load conditions at T_C = 50 °C, making it suitable for many European and Asian mains-powered devices.

What is the forward voltage drop of the VS-KBPC604 under typical operating conditions?

The VS-KBPC604 exhibits a maximum forward voltage drop of 1.2 V per diode at I_FM = 3.0 A and T_J = 25 °C. In full-bridge conduction, two diodes conduct simultaneously, resulting in a total forward drop of approximately 2.4 V across the DC output terminals. This value increases with junction temperature and current-e.g., at 6 A and 125 °C, V_F may reach ~2.8 V total. The VS-KBPC604 datasheet specifies V_FM under standardized test conditions to enable accurate power loss calculation in thermal design.

Can the VS-KBPC604 be mounted directly to a metal chassis without isolation?

No, the VS-KBPC604 D-72 package has electrically conductive metal internal structure and is not isolated-the case is internally connected to the DC negative (-) terminal. Mounting it directly to a grounded chassis creates a short between DC- and chassis ground, compromising safety and circuit functionality. Vishay recommends using insulating shoulder washers and isolated mounting hardware, or selecting an isolated-package variant (e.g., KBPC6xx with plastic-insulated base) if chassis grounding is required. Always verify terminal-to-case isolation with a megohmmeter before final assembly.

How does the VS-KBPC604 compare to the VS-KBPC104 in terms of current rating and thermal performance?

The VS-KBPC604 is rated for 6.0 A average output current at T_C = 50 °C, while the VS-KBPC104 is rated for 3.0 A under identical conditions-exactly half. Both share the same V_RRM (400 V) and D-72 package outline, but the VS-KBPC604 uses larger die and optimized metallization to achieve higher current and surge capability (137 A vs. 55 A at 60 Hz). Thermal resistance is lower in the VS-KBPC604, enabling greater power dissipation before reaching max junction temperature. The VS-KBPC604 is the preferred choice when higher output current or transient resilience is required.

VS-KBPC604 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: VS-KBPC6

Package/Case:: 4-Square, D-72

Packaging:: Bulk

Product Status:: Active

Diode Type:: Single Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 400 V

Current - Average Rectified (Io):: 6 A

Voltage - Forward (Vf) (Max) @ If:: 1.2 V @ 3 A

Current - Reverse Leakage @ Vr:: 10 µA @ 400 V

Operating Temperature:: -40°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: D-72

VS-KBPC604 FAQ

1.How can I place an order for VS-KBPC604 through Aetrix?

Please submit a Request for Quotation (RFQ) for VS-KBPC604 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-KBPC604 reliable?

The price and inventory of VS-KBPC604 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VS-KBPC604 is usually 5 days.

3.What payment methods are accepted for VS-KBPC604?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VS-KBPC604 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VS-KBPC604?

VS-KBPC604 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VS-KBPC604 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-KBPC604?

For technical support, including VS-KBPC604 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VS-KBPC604 requirements.

6.How does Aetrix verify that VS-KBPC604 is sourced from the original manufacturer or authorized distributors?

All VS-KBPC604 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-KBPC604 meets industry standards.

7.What is the process for return or replacement of VS-KBPC604?

All VS-KBPC604 units undergo pre-shipment inspection (PSI). If there is an issue with VS-KBPC604, 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-KBPC604 part is unused and in its original packaging.

Return procedure for VS-KBPC604:

1.Submit a request within 90 days.

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

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