My Inquiry
My Account
Taiwan Semiconductor Corporation UR4KB60-B
- Part No.:
- UR4KB60-B
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-ESIP
- Datasheet:
-
UR4KB60-B.pdf
- Description:
- BRIDGE RECT 1PHASE 600V 4A D3K
- Quantity:
- Payment:
- Shipping:
Inventory:875
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
UR4KB60-B from Taiwan Semiconductor is a 4A, 600V standard quad bridge rectifier in D3K package, featuring 135A surge capability, 1V max forward voltage per diode at 2A, and 10µA max reverse leakage at rated voltage - deployed in AC/DC front-end stages of compact switching power supplies.
For engineers reviewing the UR4KB60-B datasheet, UR4KB60-B pinout, UR4KB60-B application, or UR4KB60-B equivalent, key selection criteria include VRRM=600V, IF=4A (with heatsink), IFSM=135A, RθJC=8.2°C/W, and UL recognition E-326243 for safety-compliant board-level integration.
Technical Context
The UR4KB60-B integrates four silicon PN-junction diodes in a single-phase bridge configuration with common-cathode/common-anode topology. Its D3K molded package enables surface-mount or through-hole PCB assembly and supports 0.80 N·m mounting torque without mechanical damage.
Thermal performance is defined by RθJC=8.2°C/W and RθJA=14.0°C/W, enabling operation up to TJ=150°C. Electrical behavior follows standard rectifier characteristics: VF ≤1.0V at IF=2A, TJ=25°C (pulse test), and IR ≤10µA at VR=600V, TJ=25°C (30ms pulse).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 600 V - Maximum repetitive reverse voltage the bridge withstands without breakdown; sets AC input voltage rating limit. |
| IF (with heatsink) | 4 A - Continuous average forward current at TC=138°C; defines steady-state power handling with thermal management. |
| IFSM | 135 A - Non-repetitive peak surge current (8.3ms half-sine); determines robustness against line transients and inrush. |
| VF per diode | ≤1.0 V at IF=2A, TJ=25°C - Forward voltage drop impacts conduction loss and thermal design in high-efficiency SMPS. |
| RθJC | 8.2 °C/W - Junction-to-case thermal resistance; critical for heatsink interface design and thermal path optimization. |
| UL File # | E-326243 - Certified component for end-equipment safety compliance in North America and globally accepted markets. |
Pinout & Package
Package: D3K - Molded plastic case with matte tin-plated leads, UL 94V-0 rated, JESD201 Class 1A whisker compliant, weight ≈1.24g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Input AC terminal 1 | One AC input node of full-wave bridge; connects to transformer secondary or AC line input. |
| AC2 | Input AC terminal 2 | Second AC input node; completes AC input pair for full-wave rectification. |
| + (Anode-Cathode common) | DC positive output | Common cathode connection of two series diodes; delivers rectified positive DC output. |
| – (Anode-Cathode common) | DC negative output | Common anode connection of two series diodes; serves as rectified DC return/reference node. |
Key Features
| Feature | Design Value |
|---|---|
| UL Recognition | E-326243 certified - Enables direct use in safety-agency-approved end products without additional component-level testing. |
| High Surge Rating | IFSM = 135A (8.3ms) - Withstands repeated cold-start surges and lightning-induced line spikes in adapter and lighting applications. |
| Halogen-Free Construction | Complies with IEC 61249-2-21 - Meets environmental compliance requirements for RoHS and green manufacturing programs. |
| D3K Mechanical Robustness | 0.80 N·m max mounting torque + JESD201 Class 1A whisker resistance - Ensures long-term reliability under mechanical stress and thermal cycling. |
Applications
| Switching Mode Power Supply | AC-DC Adapters |
|---|---|
Use Scenario: Front-end rectification in 30–100W offline SMPS for industrial controllers and IoT gateways. IC Role / Device Role / Timing Role: Quad bridge rectifier converting AC mains to unregulated DC bus prior to PFC and DC/DC conversion. Use Value: 600V VRRM and 4A IF rating support universal input (85–265VAC) operation with margin for brownout recovery and hold-up time. | Use Scenario: Compact wall-mounted USB-C PD adapters and laptop chargers requiring high power density. IC Role / Device Role / Timing Role: Primary-side AC/DC rectifier delivering low-loss, thermally stable DC input to downstream flyback controller. Use Value: RθJC=8.2°C/W and 135A IFSM enable reliable operation under intermittent high-load conditions without derating. |
| LED Lighting Drivers | Industrial Control Power Modules |
Use Scenario: Constant-current LED drivers for commercial downlights and streetlight ballasts operating from 230VAC mains. IC Role / Device Role / Timing Role: Input-stage bridge rectifier feeding bulk capacitor and buck/buck-boost regulator stage. Use Value: UL E-326243 recognition and halogen-free construction meet IEC 62368-1 and regional environmental mandates. | Use Scenario: Auxiliary power supply in PLC I/O modules and motor drive control boards with wide ambient temperature range. IC Role / Device Role / Timing Role: Isolated AC/DC converter input rectifier supporting -55°C to +150°C junction operation. Use Value: TJ range (-55°C to +150°C) and 10µA IR at 600V ensure stable performance across harsh industrial environments. |
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/600V rating, but GBU4K has higher VF (1.1V typ) and no UL file number; RθJC = 9.5°C/W. | Not UL-recognized - requires additional system-level safety validation for end-equipment certification. | Choose GBU4K only when UL compliance is not required and cost is prioritized over thermal margin. |
| GBU6K | Higher IF rating (6A), same VRRM (600V); larger GBU package (RθJC = 7.0°C/W), heavier (2.1g). | Over-spec'd current capacity increases PCB footprint and BOM cost without benefit in 4A designs. | Select GBU6K only if future design scaling to >4.5A is confirmed and space allows larger footprint. |
Compared with GBU4K and GBU6K, the UR4KB60-B uniquely combines UL E-326243 certification, optimized thermal resistance (RθJC=8.2°C/W), and halogen-free compliance - making it the preferred choice for safety-critical, thermally constrained, and environmentally regulated applications.
Availability
UR4KB60-B is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED lighting drivers requiring stable component supply, consistent lead-time visibility, and full traceability.
Supply support for UR4KB60-B 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, automotive, and industrial markets since 1979.
The UR4KB60-B belongs to TSC's standard bridge rectifier product line, engineered for high-reliability AC/DC conversion in cost-sensitive, safety-certified, and thermally demanding applications.
FAQ
What is the maximum junction temperature rating for UR4KB60-B?
The UR4KB60-B has a maximum junction temperature (TJ) rating of +150°C, with a minimum of –55°C. This wide operating range supports deployment in industrial environments where ambient temperatures exceed 85°C. The device maintains specified electrical parameters within this range, and thermal design must ensure TJ does not exceed 150°C under worst-case load and ambient conditions. UR4KB60-B datasheet specifies RθJC = 8.2°C/W to aid in heatsink sizing.
Is UR4KB60-B RoHS and halogen-free compliant?
Yes, UR4KB60-B is RoHS compliant and halogen-free per IEC 61249-2-21. The molding compound and plating meet environmental standards required for export to EU, China, and other regulated markets. This compliance is verified in TSC's official documentation and reflected in the device marking and packaging. UR4KB60-B achieves this without compromising dielectric strength or surge capability.
What does the "B" suffix in UR4KB60-B indicate?
The "B" suffix in UR4KB60-B denotes the tape-and-reel or tube packaging variant per TSC's ordering nomenclature - specifically, UR4KB60-B is supplied in tubes of 25 units. It does not indicate a revision level or performance grade. Other variants (e.g., UR4KB60-T) may denote different packing formats, but UR4KB60-B remains electrically and mechanically identical across packaging options.
Can UR4KB60-B be used without a heatsink?
Yes, UR4KB60-B can operate without a heatsink at reduced current: its absolute maximum IF is 2A at TC=120°C in free-air conditions. At full 4A rating, a heatsink is required to maintain TC ≤138°C. Thermal derating curves in the UR4KB60-B datasheet confirm usable current drops linearly above 25°C ambient - design margins must account for enclosure airflow and adjacent heat sources.
Does UR4KB60-B have UL recognition, and what is the file number?
Yes, UR4KB60-B is UL Recognized under file number E-326243. This certification covers the device's dielectric strength, flammability (UL 94V-0), and construction integrity - allowing direct use in end products seeking UL/CSA approval. The UR4KB60-B marking includes "G" for green compound, confirming halogen-free status aligned with the UL file scope.
UR4KB60-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-ESIP
- Packaging:
- Tube
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 600 V
- Current - Average Rectified (Io):
- 4 A
- Voltage - Forward (Vf) (Max) @ If:
- 1 V @ 2 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 600 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- D3K
UR4KB60-B FAQ
1.How can I place an order for UR4KB60-B through Aetrix?
Please submit a Request for Quotation (RFQ) for UR4KB60-B 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 UR4KB60-B reliable?
The price and inventory of UR4KB60-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UR4KB60-B is usually 5 days.
3.What payment methods are accepted for UR4KB60-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UR4KB60-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UR4KB60-B?
UR4KB60-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UR4KB60-B 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 UR4KB60-B?
For technical support, including UR4KB60-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UR4KB60-B requirements.
6.How does Aetrix verify that UR4KB60-B is sourced from the original manufacturer or authorized distributors?
All UR4KB60-B 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 UR4KB60-B meets industry standards.
7.What is the process for return or replacement of UR4KB60-B?
All UR4KB60-B units undergo pre-shipment inspection (PSI). If there is an issue with UR4KB60-B, 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 UR4KB60-B part is unused and in its original packaging.
Return procedure for UR4KB60-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UR4KB60-B 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…
