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

Vishay General Semiconductor - Diodes Division 2KBP04M/1

Name: 2KBP04M/1
Brand: Vishay General Semiconductor - Diodes Division
SKU: 2KBP04M/1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 2KBP04M/1

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Bridge Rectifiers

Package:: 4-SIP, KBPM

Datasheet:: 2KBP04M/1.pdf

Description:: BRIDGE RECT 1PHASE 400V 2A KBPM

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Product details

Overview

2KBP04M/1 from Vishay Semiconductors is a glass passivated single-phase bridge rectifier with 400 V maximum repetitive peak reverse voltage (V_RRM), 2.0 A average forward output current (I_F(AV)), and 60 A peak forward surge current (I_FSM). It is designed for AC-to-DC conversion in compact PCB-mounted power supplies, battery chargers, and industrial control power stages.

For engineers reviewing the 2KBP04M/1 datasheet, 2KBP04M/1 pinout, 2KBP04M/1 application, or 2KBP04M/1 equivalent, key selection criteria include its 400 V blocking rating, 1.1 V typical forward voltage per leg at 3.14 A, <0.1 µA typical reverse leakage at 25°C, UL 94V-0 flammability rating, and KBPM case compatibility with standard through-hole mounting.

Technical Context

The 2KBP04M/1 integrates four silicon junction diodes in a single molded plastic KBPM package, configured as a full-wave bridge with marked polarity on the case (positive lead at beveled corner). Its glass passivation ensures stable junction performance under thermal cycling and humidity exposure.

Rated for operation from –55°C to +165°C, it delivers 2.0 A average rectified output at 55°C ambient when mounted on a PCB with 12 mm × 12 mm copper pads, with thermal resistance of 30°C/W (junction-to-ambient) and 11°C/W (junction-to-lead).

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	400 V - Maximum repetitive reverse voltage per leg; defines safe AC input range up to ~283 V RMS.
I_F(AV)	2.0 A - Average DC output current capability at 55°C ambient with PCB heatsinking.
I_FSM	60 A - Single half-sine surge withstand (JEDEC method); supports inrush limiting in transformer-fed supplies.
V_F	1.1 V - Typical forward voltage drop per leg at 3.14 A; determines conduction loss and thermal load.
I_R	5.0 µA max at 25°C - Reverse leakage per leg at rated DC blocking voltage; critical for low-power standby circuits.
R_ΘJA	30 °C/W - Junction-to-ambient thermal resistance with standard PCB copper pad; enables thermal design without external heatsink.

Pinout & Package

Package: KBPM - Molded plastic body with glass-passivated junctions, 0.600" × 0.460" footprint (15.24 mm × 11.68 mm), 0.160" height (4.06 mm), leads plated per MIL-STD-750 Method 2026.

Pin/Terminal	Circuit Role	Design Meaning
AC1	Input AC terminal 1	One of two AC input pins; connects to secondary winding or line-side AC source.
AC2	Input AC terminal 2	Second AC input pin; completes full-wave bridge input path.
+ (Anode)	Positive DC output	Rectified DC output anode; marked by beveled corner on case front side.
– (Cathode)	Negative DC output	Rectified DC output cathode; unmarked corner opposite beveled edge.

Key Features

Feature	Design Value
UL 94V-0 plastic housing	Meets stringent flammability requirements for enclosed power equipment and safety-critical PCB layouts.
260°C/10 s soldering tolerance	Withstands standard wave-soldering profiles without junction degradation or delamination.
Typical I_R < 0.1 µA at 25°C	Minimizes standby power loss in energy-sensitive applications like battery backup systems.
High dielectric strength case	Supports isolation between AC input and DC output sides in Class II power supplies.

Applications

AC/DC Wall Adapters	Industrial Motor Control Power Supplies
Use Scenario: Converting 120/230 VAC mains to low-voltage DC for consumer electronics. IC Role / Device Role / Timing Role: Primary bridge rectifier in non-isolated or transformer-coupled offline SMPS front-end. Use Value: 400 V V_RRM provides margin over 230 VAC peak (325 V), while 2.0 A I_F(AV) supports up to ~24 W continuous output.	Use Scenario: Providing DC bus voltage for gate drivers and logic in variable-frequency drives. IC Role / Device Role / Timing Role: Input-stage rectification ahead of bulk capacitor and DC-DC converters. Use Value: 60 A I_FSM handles motor startup surges; KBPM package allows reliable through-hole mounting on high-vibration boards.
LED Driver Power Stages	Uninterruptible Power Supply (UPS) Charging Circuits
Use Scenario: Rectifying AC for constant-current LED string drivers in commercial lighting. IC Role / Device Role / Timing Role: Mains-input bridge in flyback or buck-derived LED driver topologies. Use Value: Low 1.1 V V_F reduces conduction loss and improves efficiency at partial load; UL 94V-0 housing meets end-equipment fire standards.	Use Scenario: Charging lead-acid or Li-ion battery banks from AC utility input. IC Role / Device Role / Timing Role: Bulk rectification stage feeding linear or switching charge controllers. Use Value: –55°C to +165°C operating range ensures reliability across battery temperature extremes; 0.1 µA typical I_R prevents self-discharge during long standby.

AC/DC Wall Adapters

Industrial Motor Control Power Supplies

Use Scenario: Converting 120/230 VAC mains to low-voltage DC for consumer electronics.

IC Role / Device Role / Timing Role: Primary bridge rectifier in non-isolated or transformer-coupled offline SMPS front-end.

Use Value: 400 V V_RRM provides margin over 230 VAC peak (325 V), while 2.0 A I_F(AV) supports up to ~24 W continuous output.

Use Scenario: Providing DC bus voltage for gate drivers and logic in variable-frequency drives.

IC Role / Device Role / Timing Role: Input-stage rectification ahead of bulk capacitor and DC-DC converters.

Use Value: 60 A I_FSM handles motor startup surges; KBPM package allows reliable through-hole mounting on high-vibration boards.

LED Driver Power Stages

Uninterruptible Power Supply (UPS) Charging Circuits

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

IC Role / Device Role / Timing Role: Mains-input bridge in flyback or buck-derived LED driver topologies.

Use Value: Low 1.1 V V_F reduces conduction loss and improves efficiency at partial load; UL 94V-0 housing meets end-equipment fire standards.

Use Scenario: Charging lead-acid or Li-ion battery banks from AC utility input.

IC Role / Device Role / Timing Role: Bulk rectification stage feeding linear or switching charge controllers.

Use Value: –55°C to +165°C operating range ensures reliability across battery temperature extremes; 0.1 µA typical I_R prevents self-discharge during long standby.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
GBU4K	Same 400 V V_RRM, 2.0 A I_F(AV), but GBU package (larger footprint, 22.3 mm × 18.5 mm).	Requires larger PCB area; higher R_ΘJA (35°C/W) limits power density in compact designs.	Choose GBU4K only if legacy layout accommodates larger outline or higher surge margin (100 A I_FSM) is required.
W04M	Same KBPM package, 400 V rating, but lower I_F(AV) (1.5 A) and I_FSM (50 A).	Suitable for lighter loads (<18 W); not recommended for sustained 2.0 A operation or high-inrush applications.	Select W04M only for cost-sensitive, lower-power designs where thermal headroom is sufficient and surge immunity is secondary.

Compared with GBU4K and W04M, the 2KBP04M/1 uniquely balances 2.0 A continuous current, 60 A surge capability, and compact KBPM footprint-enabling higher power density than W04M and smaller board area than GBU4K without sacrificing reliability.

Availability

2KBP04M/1 is available at Aetrix Electronics and suitable for AC/DC power supplies, industrial motor control interfaces, and LED driver designs requiring stable component supply, consistent parametric performance, and long-term manufacturability.

Supply support for 2KBP04M/1 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 and passive components, specializing in high-reliability diodes, MOSFETs, optoelectronics, and resistive solutions.

The 2KBP04M/1 belongs to Vishay's KBPM-series glass-passivated bridge rectifiers, engineered for robustness in industrial, appliance, and infrastructure power conversion where thermal stability, surge resilience, and safety certification are mandatory.

FAQ

What is the maximum ambient temperature at which 2KBP04M/1 can deliver its full 2.0 A average forward current?

The 2KBP04M/1 delivers its rated 2.0 A average forward output current (I_F(AV)) at an ambient temperature of 55°C when mounted on a PCB with 12 mm × 12 mm copper pads. Above 55°C, derating is required per Figure 1 in Vishay Document 88532; at 70°C ambient, usable current drops to approximately 1.6 A. This thermal limit is defined by its 30°C/W junction-to-ambient resistance and 165°C maximum junction temperature.

Does 2KBP04M/1 have UL recognition, and what file number applies?

Yes, the 2KBP04M/1 is UL Recognized under Component Index file E54214 and complies with UL 94V-0 flammability requirements. This certification covers the entire KBPM series, including 2KBP04M/1, and validates its molded plastic housing for use in end products requiring safety agency approval. The UL mark appears on Vishay's official datasheet (Document 88532) and packaging labels.

What is the pin configuration and polarity marking for 2KBP04M/1?

The 2KBP04M/1 has four terminals: two AC inputs (AC1, AC2), one positive DC output (+), and one negative DC output (–). Polarity is marked on the front side of the case: the positive lead is identified by a beveled corner, while the opposite corner is the negative terminal. The AC terminals are unmarked and interchangeable. This layout matches standard KBPM footprint drawings in Vishay's mechanical data.

Can 2KBP04M/1 replace 2KBP02M in a design originally specified for 200 V blocking?

No-2KBP04M/1 is not a direct replacement for 2KBP02M in circuits relying on its 200 V V_RRM rating. While both share the same KBPM package and 2.0 A I_F(AV), the 2KBP04M/1 has a higher 400 V V_RRM and different internal junction design. Substitution may affect reverse recovery behavior and thermal distribution; redesign validation-including surge testing and thermal imaging-is required before using 2KBP04M/1 in place of 2KBP02M.

What is the typical junction capacitance of 2KBP04M/1, and how does it affect high-frequency performance?

The typical junction capacitance (C_J) of 2KBP04M/1 is 25 pF per leg at 4.0 V and 1 MHz, as measured under standard conditions in Vishay Document 88532. This value influences EMI generation and snubber design in high-frequency switching supplies; higher C_J increases capacitive coupling and reverse recovery charge (Q_rr), potentially raising switching losses in PFC or resonant topologies operating above 50 kHz.

2KBP04M/1 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: 4-SIP, KBPM

Packaging:: Bulk

Product Status:: Obsolete

Diode Type:: Single Phase

Technology:: Standard

Voltage - Peak Reverse (Max):: 400 V

Current - Average Rectified (Io):: 2 A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 3.14 A

Current - Reverse Leakage @ Vr:: 5 µA @ 400 V

Operating Temperature:: -55°C ~ 165°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: KBPM

2KBP04M/1 FAQ

1.How can I place an order for 2KBP04M/1 through Aetrix?

Please submit a Request for Quotation (RFQ) for 2KBP04M/1 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 2KBP04M/1 reliable?

The price and inventory of 2KBP04M/1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 2KBP04M/1 is usually 5 days.

3.What payment methods are accepted for 2KBP04M/1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 2KBP04M/1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 2KBP04M/1?

2KBP04M/1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 2KBP04M/1 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 2KBP04M/1?

For technical support, including 2KBP04M/1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 2KBP04M/1 requirements.

6.How does Aetrix verify that 2KBP04M/1 is sourced from the original manufacturer or authorized distributors?

All 2KBP04M/1 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 2KBP04M/1 meets industry standards.

7.What is the process for return or replacement of 2KBP04M/1?

All 2KBP04M/1 units undergo pre-shipment inspection (PSI). If there is an issue with 2KBP04M/1, 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 2KBP04M/1 part is unused and in its original packaging.

Return procedure for 2KBP04M/1:

1.Submit a request within 90 days.

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

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