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Taiwan Semiconductor Corporation UR8KB100
- Part No.:
- UR8KB100
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-ESIP
- Datasheet:
-
UR8KB100.pdf
- Description:
- BRIDGE RECT 1PHASE 1KV 8A D3K
- Quantity:
- Payment:
- Shipping:
Inventory:1,367
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Product details
Overview
UR8KB100 from Taiwan Semiconductor is a 8A, 1000V standard quad bridge rectifier in D3K package, featuring 170A surge capability, 1.20V max forward voltage at 8A/25°C, and UL Recognized (E-326243) construction for high-reliability AC/DC conversion in industrial power supplies.
For engineers reviewing the UR8KB100 datasheet, UR8KB100 pinout, UR8KB100 application, or UR8KB100 equivalent, key selection criteria include peak reverse voltage rating (1000V), thermal resistance (RθJL = 13°C/W), junction temperature range (–55°C to +150°C), and RoHS/halogen-free compliance per IEC 61249-2-21.
Technical Context
The UR8KB100 integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals externally accessible. Its D3K package uses matte tin-plated leads compliant with J-STD-002 and JESD 201 Class 1A whisker testing.
Thermal performance is specified with mounting on a 4" × 6" × 0.25" aluminum heatsink, yielding RθJC = 14°C/W and RθJA = 25°C/W. Reverse leakage remains ≤500 µA at 125°C and rated VRRM, supporting stable operation in thermally demanding environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 1000 V - Maximum repetitive reverse voltage per diode; defines safe AC input handling up to 700 VRMS. |
| IF | 8 A - Continuous average forward current; supports sustained DC output in 100W–200W SMPS designs. |
| IFSM | 170 A - Non-repetitive surge current (8.3 ms half-sine); withstands inrush during cold-start of power adapters. |
| VF (max) | 1.20 V @ 8A, 25°C - Forward voltage drop per diode; determines conduction loss and thermal load at full rated current. |
| TJ max | +150°C - Maximum junction temperature; enables operation in enclosed, high-ambient industrial enclosures. |
| RθJL | 13 °C/W - Junction-to-lead thermal resistance; informs heatsink sizing when lead-mounted with mechanical torque ≤0.80 N·m. |
| I2t | 119.9 A²s - Fusing rating (t < 8.3 ms); used for coordination with fast-acting fuses in overcurrent protection schemes. |
Pinout & Package
Package: D3K - Molded plastic case with UL 94V-0 flammability rating, 1.24g mass, matte tin-plated leads, and polarity marking per device top-side legend.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AC1 | Bridge input terminal | One AC input node; connects to transformer secondary or line filter output. |
| AC2 | Bridge input terminal | Second AC input node; completes full-wave rectification path with AC1. |
| + (Anode Common) | Positive DC output | Common anode connection of two diodes; delivers rectified positive rail. |
| – (Cathode Common) | Negative DC output | Common cathode connection of two diodes; serves as return/ground reference. |
Key Features
| Feature | Design Value |
|---|---|
| UL Recognition | E-326243 certified - Enables direct use in end-equipment requiring UL safety agency approval without additional system-level certification burden. |
| High surge capability | 170A IFSM - Supports robust startup in switching power supplies with large bulk capacitors and no external inrush limiting needed. |
| Halogen-free construction | Complies with IEC 61249-2-21 - Meets environmental compliance requirements for export to EU, Japan, and other regulated markets. |
| Whisker-resistant plating | JESD 201 Class 1A - Ensures long-term solder joint reliability in automotive and industrial applications with extended temperature cycling. |
| High dielectric strength | Rated for 1000V VRRM with margin - Provides isolation integrity between AC inputs and DC outputs under transient overvoltage conditions. |
Applications
| Switching Mode Power Supply | AC-DC Adapter |
|---|---|
Use Scenario: Primary-side rectification in 100–250W offline SMPS with universal AC input (85–265VAC). IC Role / Device Role / Timing Role: Quad bridge rectifier converting AC line to pulsating DC before PFC and main DC/DC stage. Use Value: 1000V VRRM provides 2× margin over peak line voltage (375V), ensuring reliability during brownouts and surges. | Use Scenario: Compact wall-mount adapter for consumer electronics with high-efficiency requirements. IC Role / Device Role / Timing Role: Input-stage full-wave rectifier delivering low-loss DC bus to flyback controller IC. Use Value: 1.20V VF max at 8A reduces conduction loss by ~15% vs. legacy 1.4V bridges, improving thermal footprint on PCB. |
| LED Driver Power Stage | Industrial Control Power Module |
Use Scenario: Constant-voltage LED driver for commercial lighting operating from 230VAC mains. IC Role / Device Role / Timing Role: Mains rectification feeding buck or buck-boost regulator driving high-brightness LEDs. Use Value: 150°C TJ max allows operation inside sealed luminaires without forced air cooling. | Use Scenario: Auxiliary power supply in PLC or motor drive cabinet with ambient up to 70°C. IC Role / Device Role / Timing Role: Isolated auxiliary DC source powering gate drivers, logic, and sensors. Use Value: UL Recognition and 13°C/W RθJL support compliance and thermal management in space-constrained DIN-rail modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar bridge rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| GBU10K | Same 8A/1000V rating, GBU package (larger footprint, higher RθJA = 35°C/W) | Less suitable for compact PCB layouts; requires larger heatsinking for same power dissipation | Prefer UR8KB100 where board space and thermal efficiency are constrained |
| GBU10J | 8A/600V rating only; lower VRRM limits use to 277VAC max systems | Not acceptable for 400V DC bus designs or regions with 240V+ nominal mains | Select UR8KB100 for global 100–240V AC input compatibility with safety margin |
Compared with GBU10K and GBU10J, the UR8KB100 delivers superior thermal performance in a smaller D3K outline, while its 1000V rating ensures design flexibility across worldwide AC line voltages and transient conditions-critical for industrial and medical-grade auxiliary supplies.
Availability
UR8KB100 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and LED driver power stages requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for UR8KB100 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 industrial, computing, and consumer markets since 1979.
The UR8KB100 belongs to TSC's standard bridge rectifier product line, engineered for high-reliability AC/DC front-end conversion in cost-sensitive yet thermally demanding applications such as open-frame power supplies and DIN-rail mounted controllers.
FAQ
What is the maximum continuous forward current rating for UR8KB100?
The UR8KB100 is rated for 8 A average forward current (IF) at case temperature ≤75°C with adequate heatsinking. This rating assumes operation within the specified junction temperature range (–55°C to +150°C) and accounts for thermal derating above 75°C case temperature per the forward current derating curve in the datasheet. The UR8KB100 maintains this current capability while delivering 1000V reverse blocking.
Does UR8KB100 meet RoHS and halogen-free requirements?
Yes, the UR8KB100 is RoHS compliant and halogen-free per IEC 61249-2-21. Its molding compound and plating materials are certified to these environmental standards, making it suitable for export to EU, Japan, and other regulated markets. This compliance is documented in Taiwan Semiconductor's official product specification C2104 and verified through material declarations.
What is the pin configuration of UR8KB100 and how is polarity marked?
The UR8KB100 uses a standard quad bridge pinout: AC1 and AC2 are the AC input terminals, "+" is the common anode (positive DC output), and "–" is the common cathode (negative DC output). Polarity is marked on the device top surface per the official marking diagram - "+" and "–" symbols adjacent to respective terminals, with "UR8KB100" and date code laser-etched for traceability.
Can UR8KB100 replace UR8KB80 or UR8KB60 in existing designs?
Yes, the UR8KB100 is a direct voltage-upgrade replacement for UR8KB80 (800V) and UR8KB60 (600V) within the same D3K package - identical pinout, thermal characteristics, and mechanical dimensions. No PCB layout changes are required; however, designers should verify that the higher 1000V rating does not introduce unintended parasitic effects in ultra-high-frequency designs due to increased junction capacitance (63 pF).
What is the UL recognition status of UR8KB100?
The UR8KB100 is UL Recognized under File # E-326243, covering the entire UR8KB60–UR8KB100 series. This certification applies to the D3K package construction, including flammability (UL 94V-0), dielectric strength, and long-term reliability under rated electrical and thermal stress - enabling direct use in end products requiring UL safety compliance without additional system-level evaluation.
UR8KB100 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):
- 1 kV
- Current - Average Rectified (Io):
- 8 A
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 8 A
- Current - Reverse Leakage @ Vr:
- 10 µA @ 1000 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- D3K
UR8KB100 FAQ
1.How can I place an order for UR8KB100 through Aetrix?
Please submit a Request for Quotation (RFQ) for UR8KB100 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 UR8KB100 reliable?
The price and inventory of UR8KB100 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UR8KB100 is usually 5 days.
3.What payment methods are accepted for UR8KB100?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UR8KB100 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UR8KB100?
UR8KB100 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UR8KB100 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 UR8KB100?
For technical support, including UR8KB100 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UR8KB100 requirements.
6.How does Aetrix verify that UR8KB100 is sourced from the original manufacturer or authorized distributors?
All UR8KB100 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 UR8KB100 meets industry standards.
7.What is the process for return or replacement of UR8KB100?
All UR8KB100 units undergo pre-shipment inspection (PSI). If there is an issue with UR8KB100, 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 UR8KB100 part is unused and in its original packaging.
Return procedure for UR8KB100:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UR8KB100 Tags
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