My Inquiry
My Account
Taiwan Semiconductor Corporation KBPF306G
- Part No.:
- KBPF306G
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBPF
- Datasheet:
-
KBPF306G.pdf
- Description:
- BRIDGE RECT 1PHASE 800V 3A KBPF
- Quantity:
- Payment:
- Shipping:
Inventory:2,100
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
KBPF306G from Taiwan Semiconductor is a quad-configuration standard bridge rectifier with 3A average forward current, 800V repetitive peak reverse voltage (VRRM), and 80A surge capability, designed for AC/DC conversion in compact power supplies and lighting drivers.
For engineers reviewing the KBPF306G datasheet, KBPF306G pinout, KBPF306G application, or KBPF306G equivalent, key selection factors include its KBPF package thermal resistance (RθJL = 12°C/W), 1.1V max forward voltage per diode at 1.5A/25°C, and UL recognition (E-326243) for safety-critical designs.
Technical Context
The KBPF306G integrates four silicon diodes in a single-phase full-wave bridge configuration, enabling direct AC-to-DC rectification without external interconnection. Its 800V VRRM rating supports input stages handling 560V RMS line voltage, and the 1.4g molded KBPF package meets UL 94V-0 flammability requirements.
Thermal performance is specified for PCB mounting on 10mm × 10mm copper pads, with RθJA = 59°C/W and RθJC = 13°C/W. Electrical behavior includes 5µA max reverse leakage at 25°C and 27pF junction capacitance per diode at 1MHz/4V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Supports 560 VRMS AC inputs, suitable for universal-input SMPS up to 230 VAC + 15% tolerance |
| IF | 3 A - Continuous average forward current rating at case temperature ≤ 75°C on PCB |
| IFSM | 80 A - Withstands 8.3 ms half-sine surge, sufficient for cold-start inrush in 100W adapters |
| VF (per diode) | ≤1.1 V @ 1.5 A, 25°C - Limits conduction loss to <1.65 W total in full-wave operation |
| RθJL | 12 °C/W - Enables direct thermal coupling to PCB copper, reducing need for heatsinking in ≤15W designs |
| I2t | 26.5 A²s - Quantifies fusing energy threshold for overcurrent protection coordination |
Pinout & Package
Package: KBPF - Molded plastic, 4-terminal single-in-line (SIP) package with matte tin-plated leads compliant with J-STD-002 solderability; polarity marked on body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC input terminal 1 | One leg of AC input; connects to transformer secondary or EMI filter output |
| ~AC2 | AC input terminal 2 | Second leg of AC input; completes full-wave bridge input path |
| +DC | Positive DC output | Anode connection point for all four internal diodes; feeds bulk capacitor or PFC stage |
| -DC | Negative DC output / common return | Cathode connection point for all four internal diodes; serves as system ground reference |
Key Features
| Feature | Design Value |
|---|---|
| UL Recognized (E-326243) | Validates compliance with UL 60950-1/62368-1 for end-equipment safety certification |
| RoHS & Halogen-free (IEC 61249-2-21) | Meets global environmental regulations and enables use in green electronics manufacturing |
| High IFSM (80 A) | Supports robust startup under high-capacitance loads without degradation or failure |
| Low RθJL (12°C/W) | Permits efficient heat transfer to PCB, enabling higher power density in space-constrained layouts |
Applications
| Switching Mode Power Supply | LED Lighting Driver |
|---|---|
Use Scenario: Primary-side rectification in 12–36W offline flyback converters with universal AC input (90–264 VAC). IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting AC line to unregulated DC bus prior to switching transistor. Use Value: 800V VRRM provides 2× margin over 264 VAC peak (373 V), ensuring reliability during line surges. | Use Scenario: Input rectification in constant-current LED drivers for commercial downlights and streetlights. IC Role / Device Role / Timing Role: AC-to-DC front-end stage feeding passive or active PFC circuitry. Use Value: 3A IF rating supports drivers delivering up to 30W at 85% efficiency with minimal derating. |
| Laptop Adapter | Industrial Control Power Module |
Use Scenario: Compact 65W AC/DC adapter with low-profile mechanical envelope. IC Role / Device Role / Timing Role: Surface-mount bridge rectifier mounted directly on primary PCB with minimal copper area. Use Value: KBPF package footprint and 1.4g weight enable lightweight, cost-effective assembly without discrete diode layout. | Use Scenario: Auxiliary power supply in PLC I/O modules requiring long-term stability under 55°C ambient. IC Role / Device Role / Timing Role: Isolated AC input rectification feeding 5V/12V regulation for logic and sensor interfaces. Use Value: -55°C to +150°C operating range and UL recognition support extended industrial lifecycle requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU8K (ON Semiconductor) | Same 800V VRRM, but 8A IF and larger GBU package (RθJA = 40°C/W); 3.5g mass | Higher thermal mass and footprint; suited for >50W designs needing lower conduction loss | Select when board space allows larger package and higher continuous current is required |
| GBU6K (Vishay) | Identical 800V/3A rating and KBPF-compatible footprint; RθJL = 13°C/W vs. 12°C/W | No PCB layout change needed; RoHS-compliant but not halogen-free per IEC 61249-2-21 | Drop-in alternative where halogen-free requirement is not enforced |
Compared with GBU8K and GBU6K, KBPF306G offers the lowest thermal resistance to lead (12°C/W) and halogen-free compliance in the smallest KBPF footprint-advantageous for space- and sustainability-constrained consumer power designs.
Availability
KBPF306G is available at Aetrix Electronics and suitable for switching mode power supplies, LED lighting drivers, and laptop adapters requiring stable component supply, consistent parametric performance, and UL-recognized safety compliance.
Supply support for KBPF306G 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
Taiwan Semiconductor Corporation (TSC) is a vertically integrated analog and discrete semiconductor manufacturer headquartered in Hsinchu, Taiwan, serving global power and protection markets since 1979.
The KBPF series is engineered for high-reliability AC/DC front-end rectification in cost-sensitive, high-volume power applications-emphasizing manufacturability, safety certification, and thermal efficiency in compact SIP packages.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for KBPF306G?
The KBPF306G has a VRRM rating of 800 V, verified per Taiwan Semiconductor's B2103 datasheet. This value defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It ensures safe operation with 230 VAC ±15% mains input (peak ≈ 373 V), providing >2× voltage margin for transient suppression and long-term reliability in KBPF306G-based designs.
Does KBPF306G require a heatsink in typical applications?
KBPF306G does not require an external heatsink in most applications rated ≤15W, thanks to its low RθJL of 12°C/W and optimized thermal path to PCB copper. When mounted on a 10mm × 10mm Cu pad, junction temperature remains within 150°C limit at 3A IF and 25°C ambient. For sustained 3A operation above 50°C ambient, thermal simulation using RθJA = 59°C/W is recommended before finalizing KBPF306G layout.
Is KBPF306G compatible with lead-free reflow soldering processes?
Yes, KBPF306G features matte tin-plated leads qualified to J-STD-002 for solderability and is rated for lead-free reflow profiles per JEDEC J-STD-020. The KBPF package withstands peak temperatures up to 260°C for 10 seconds. Taiwan Semiconductor confirms full compatibility with standard Pb-free assembly, including compatibility with no-clean fluxes and post-solder cleaning agents-critical for high-yield KBPF306G manufacturing.
What is the marking code printed on the KBPF306G package?
The KBPF306G is laser-marked with "KBPF306G" on the top surface, followed by a date code (YWW format) and factory code "F". The "G" suffix explicitly denotes green (halogen-free) molding compound per IEC 61249-2-21. This marking aligns with Taiwan Semiconductor's ordering code KBPF3xG, where "x" = 6 indicates the 800V rating-ensuring unambiguous identification of KBPF306G on finished boards and in inventory.
How does KBPF306G compare to KBPF304G in terms of reverse voltage capability?
KBPF306G is rated for 800 V VRRM, whereas KBPF304G is rated for 400 V VRRM-a 2× difference. Both share identical IF (3 A), IFSM (80 A), and thermal specifications, but KBPF306G supports higher-input-voltage applications such as 230 VAC systems with surge margins, while KBPF304G is limited to 115 VAC or SELV-derived inputs. Substituting KBPF304G for KBPF306G risks catastrophic failure under 230 VAC operation.
KBPF306G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-SIP, KBPF
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 800 V
- Current - Average Rectified (Io):
- 3 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 1.5 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBPF
KBPF306G FAQ
1.How can I place an order for KBPF306G through Aetrix?
Please submit a Request for Quotation (RFQ) for KBPF306G 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 KBPF306G reliable?
The price and inventory of KBPF306G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBPF306G is usually 5 days.
3.What payment methods are accepted for KBPF306G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBPF306G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBPF306G?
KBPF306G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBPF306G 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 KBPF306G?
For technical support, including KBPF306G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBPF306G requirements.
6.How does Aetrix verify that KBPF306G is sourced from the original manufacturer or authorized distributors?
All KBPF306G 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 KBPF306G meets industry standards.
7.What is the process for return or replacement of KBPF306G?
All KBPF306G units undergo pre-shipment inspection (PSI). If there is an issue with KBPF306G, 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 KBPF306G part is unused and in its original packaging.
Return procedure for KBPF306G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
KBPF306G Tags
-
HDS10M-13
Diodes Incorporated
-
CD-MBL106S
Bourns Inc.
-
MB10S-13
Diodes Incorporated
-
CD-MBL206SL
Bourns Inc.
-
MB4S-TP
Micro Commercial Co
-
MB6S-TP
Micro Commercial Co
-
CD-MBL210S
Bourns Inc.
-
BAS3007ARPPE6327HTSA1
Infineon Technologies
-
DF02M
Diodes Incorporated
-
CD-MBL210SL
Bourns Inc.
-
DF04M
Diodes Incorporated
-
DF01M
Diodes Incorporated
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
