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Diodes Incorporated KBP4T10
- Part No.:
- KBP4T10
- Manufacturer:
- Diodes Incorporated
- Category:
- Bridge Rectifiers
- Package:
- 4-SIP, KBP
- Datasheet:
-
KBP4T10.pdf
- Description:
- BRIDGE RECT 1PHASE 1KV 4A KBP
- Quantity:
- Payment:
- Shipping:
Inventory:4,530
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Product details
Overview
KBP4T10 from Diodes Incorporated is a 4A, 1000V fast recovery bridge rectifier in KBP package, featuring 1.3V max forward voltage at 4A and 5µA max reverse leakage at 25°C. It employs glass-passivated die construction for robustness and is optimized for AC/DC power conversion in offline switch-mode power supplies, industrial motor drives, and LED lighting ballasts.
For engineers reviewing the KBP4T10 datasheet, KBP4T10 pinout, KBP4T10 application, or KBP4T10 equivalent, key selection criteria include its 1000V PRV rating, 500ns reverse recovery time, thermal resistance of 3°C/W (junction-to-case), and compatibility with PCB mounting without heatsink up to 1.9A average current at 125°C case temperature.
Technical Context
The KBP4T10 integrates four fast recovery diodes in a single-phase full-wave bridge configuration with glass-passivated junctions to enhance surge immunity and long-term reliability under repetitive reverse voltage stress. Its 500ns trr enables efficient operation in high-frequency switching converters up to 100kHz.
Thermal design is supported by low RθJC (3°C/W) when mounted on a fin-type heatsink (45mm × 30mm × 23mm), and its 100A IFSM rating allows tolerance of short-duration line surges common in universal-input AC mains applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Withstands peak reverse voltages up to 1000V in AC line applications without breakdown |
| IF(AV) | 4 A - Delivers 4A average rectified output current with heatsink at TC = +125°C |
| VF Max | 1.3 V - Forward voltage drop at 4A/25°C; determines conduction loss and thermal load in power stage |
| trr | 500 ns - Fast reverse recovery minimizes switching losses and EMI in high-frequency SMPS designs |
| IR Max | 5 µA - Low leakage at rated VR and 25°C ensures minimal standby power loss in energy-sensitive systems |
| RθJC | 3 °C/W - Junction-to-case thermal resistance enables predictable heatsink sizing for thermal management |
Pinout & Package
Package: KBP (4-lead single-phase bridge rectifier outline per Diodes Inc. package drawing KBP, dimensions: D = 14.25–14.75 mm, E = 10.20–10.60 mm, L = 14.25–14.73 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One of two alternating-current input pins; connects to live/neutral side of transformer secondary or AC line |
| AC2 | Input AC terminal 2 | Second AC input pin; completes full-wave bridge input path with AC1 |
| + (Anode Output) | Positive DC output | Rectified positive output node; supplies filtered DC bus to downstream regulators or loads |
| – (Cathode Output) | Negative DC output | Rectified negative output node; serves as return path and ground reference for DC output |
Key Features
| Feature | Design Value |
|---|---|
| Glass passivated die | Enhances moisture resistance and long-term stability of reverse blocking capability under humid or high-bias conditions |
| UL 94V-0 plastic package | Meets flammability safety standard for enclosed power equipment and industrial enclosures |
| Lead-free & RoHS 3 compliant | Supports global environmental compliance requirements including EU Directive 2015/863/EU |
| Halogen- and antimony-free "Green" construction | Contains <900ppm Br, <900ppm Cl, and <1000ppm Sb-aligned with automotive and green electronics initiatives |
Applications
| Industrial Motor Drives | LED Lighting Ballasts |
|---|---|
Use Scenario: Rectifying 50/60Hz or high-frequency AC from inverters or transformers to supply DC link for IGBT/MOSFET H-bridges. IC Role / Device Role / Timing Role: Primary AC-to-DC conversion stage delivering stable DC bus voltage to drive control circuitry and power switches. Use Value: 1000V VRRM and 100A IFSM ensure reliable operation during motor startup surges and regenerative braking transients. | Use Scenario: Converting AC mains to DC for constant-current LED drivers in commercial and outdoor lighting fixtures. IC Role / Device Role / Timing Role: Input-stage bridge rectifier enabling high-efficiency, compact driver designs with minimal heat generation. Use Value: 1.3V VF max and 500ns trr reduce conduction and switching losses, improving overall system efficiency and thermal margin. |
| Offline Switch-Mode Power Supplies | Uninterruptible Power Supplies (UPS) |
Use Scenario: Front-end rectification in universal-input (85–265VAC) flyback or LLC resonant converters. IC Role / Device Role / Timing Role: High-voltage AC input conditioning block feeding bulk capacitor and primary-side controller. Use Value: Low IR (5µA @ 25°C) and stable CJ (40pF) minimize no-load losses and improve EMI filter predictability. | Use Scenario: AC/DC conversion in line-interactive and double-conversion UPS systems handling grid fluctuations and battery backup transitions. IC Role / Device Role / Timing Role: Bidirectional rectification and hold-up support during transfer switching between utility and inverter sources. Use Value: -55°C to +150°C operating range and 1.9A IF(AV) without heatsink enable reliable operation across wide ambient and transient thermal conditions. |
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 4A/1000V rating but GBU package (larger footprint, higher RθJA); trr = 750ns | Suitable for lower-frequency (<50kHz) designs where space permits larger package | Prefer KBP4T10 for space-constrained PCBs requiring faster recovery and lower thermal resistance |
| KBL410 | KBL package (4-pin inline); identical VRRM/IF but VF = 1.4V max; trr = 500ns; RθJC = 4°C/W | Better suited for through-hole prototyping or legacy board layouts with inline lead spacing | Choose KBP4T10 for surface-mount production with superior thermal performance and lower VF |
Compared with GBU4K and KBL410, KBP4T10 offers the lowest RθJC (3°C/W), tightest VF spec (1.3V), and smallest KBP footprint-making it optimal for thermally demanding, high-density SMT power supplies where layout area and thermal headroom are constrained.
Availability
KBP4T10 is available at Aetrix Electronics and suitable for industrial motor drives, LED lighting ballasts, and offline switch-mode power supplies requiring stable component supply, RoHS-compliant sourcing, and consistent thermal performance across production batches.
Supply support for KBP4T10 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability power management, signal integrity, and protection solutions for industrial, computing, and consumer markets.
The KBP series bridges belong to Diodes' high-voltage rectifier product line, engineered for cost-effective, thermally efficient AC/DC front-end conversion in space- and reliability-critical power systems.
FAQ
What is the maximum average forward current for KBP4T10 without a heatsink?
At TC = +125°C, the KBP4T10 delivers 1.9A average forward current without a heatsink, as specified in the Absolute Maximum Ratings table. This derating curve is validated per Figure 1 in DS44744 Rev. 2–2, and operation above this limit risks thermal runaway due to insufficient heat dissipation.
Does KBP4T10 meet automotive qualification standards?
The KBP4T10 is not AEC-Q101 qualified out-of-the-box. Diodes states that automotive-grade variants require specific change control-including PPAP capability and IATF 16949 manufacturing-and must be requested separately via direct contact with Diodes or authorized representatives.
How does the 500ns reverse recovery time impact EMI in SMPS designs?
A 500ns trr reduces high-frequency ringing and di/dt-induced voltage spikes during commutation, directly lowering conducted and radiated EMI in 50–100kHz SMPS topologies. This allows smaller EMI filter components and eases compliance with CISPR-22/32 Class B limits without sacrificing efficiency.
Can KBP4T10 be used in dual-voltage (115V/230V) input applications?
Yes-its 1000V VRRM rating exceeds the peak voltage of both 115VAC (≈163V) and 230VAC (≈325V) inputs, including safety margins for line surges. The device supports universal-input designs when paired with appropriate input fusing, MOV protection, and bulk capacitance sizing per IEC 61000-4-5.
KBP4T10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 4-SIP, KBP
- Packaging:
- Bulk
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 1 kV
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 4 A
- Current - Reverse Leakage @ Vr:
- 5 µA @ 1000 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- KBP
KBP4T10 FAQ
1.How can I place an order for KBP4T10 through Aetrix?
Please submit a Request for Quotation (RFQ) for KBP4T10 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 KBP4T10 reliable?
The price and inventory of KBP4T10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for KBP4T10 is usually 5 days.
3.What payment methods are accepted for KBP4T10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for KBP4T10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for KBP4T10?
KBP4T10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your KBP4T10 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 KBP4T10?
For technical support, including KBP4T10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your KBP4T10 requirements.
6.How does Aetrix verify that KBP4T10 is sourced from the original manufacturer or authorized distributors?
All KBP4T10 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 KBP4T10 meets industry standards.
7.What is the process for return or replacement of KBP4T10?
All KBP4T10 units undergo pre-shipment inspection (PSI). If there is an issue with KBP4T10, 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 KBP4T10 part is unused and in its original packaging.
Return procedure for KBP4T10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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