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Taiwan Semiconductor Corporation ABS4-K
- Part No.:
- ABS4-K
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Bridge Rectifiers
- Package:
- 4-SMD, Gull Wing
- Datasheet:
-
ABS4-K.pdf
- Description:
- BRIDGE RECT 1PHASE 400V 1A ABS
- Quantity:
- Payment:
- Shipping:
Inventory:9,393
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Product details
Overview
ABS4-K from Taiwan Semiconductor is a 1A, 400V standard quad bridge rectifier in ABS package, featuring glass-passivated junctions, 30A peak surge current capability, and UL Recognized (E-326854) construction. It delivers reliable AC-to-DC conversion in compact power supplies for consumer adapters and LED lighting systems.
For engineers reviewing the ABS4-K datasheet, ABS4-K pinout, ABS4-K application, or ABS4-K equivalent, key selection criteria include repetitive peak reverse voltage (400V), forward current rating (1.0A on aluminum substrate), thermal resistance (RθJL = 25°C/W), and RoHS/halogen-free compliance per IEC 61249-2-21.
Technical Context
The ABS4-K integrates four silicon diodes in a single-phase full-wave bridge configuration with common-cathode and common-anode terminals. Its glass-passivated junction ensures stable reverse leakage (<10 µA at 25°C) and high reliability under thermal cycling.
Designed for surface-mount assembly, it supports automated placement and meets JESD201 Class 1A whisker resistance and J-STD-020 Level 1 moisture sensitivity. The ABS molded plastic case complies with UL 94V-0 flammability rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 400 V - maximum repetitive reverse voltage per diode; defines safe AC input voltage limit (e.g., ≤280 VRMS) |
| IF (on Al substrate) | 1.0 A - continuous forward current rating when mounted on aluminum heatsink; enables compact SMPS designs |
| IFSM | 30 A - non-repetitive surge current (8.3 ms half-sine); withstands inrush in offline power supplies |
| TJ max | +150 °C - maximum junction temperature; supports operation in enclosed, thermally constrained environments |
| RθJL | 25 °C/W - junction-to-lead thermal resistance; enables direct thermal path to PCB copper pour or heatsink |
| VF (per diode) | ≤0.95 V @ 0.4 A, 25°C - low forward drop reduces conduction loss and improves efficiency in low-voltage output stages |
| IR @ 125°C | ≤150 µA - reverse leakage at elevated temperature; maintains low standby power in always-on lighting circuits |
Pinout & Package
Package: ABS - surface-mount molded plastic case (UL 94V-0), 4-pin single-row layout with integrated bridge topology. Dimensions per Taiwan Semiconductor package outline drawing C2103.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ~AC1 | AC input terminal 1 | One leg of AC input; connects to primary-side transformer secondary or line filter output |
| ~AC2 | AC input terminal 2 | Second leg of AC input; completes full-wave bridge input path |
| +DC | Positive DC output | Common cathode node; supplies regulated +VOUT rail after bulk capacitor |
| –DC | Negative DC output / ground reference | Common anode node; serves as return path and system ground reference point |
Key Features
| Feature | Design Value |
|---|---|
| Glass-passivated chip junction | Enables stable reverse leakage performance across temperature and humidity; extends service life in humid environments |
| UL Recognized (E-326854) | Validates safety compliance for end-equipment certification without additional component-level testing |
| Moisture sensitivity level 1 | Eliminates bake requirement prior to reflow; supports standard SMT assembly without process modification |
| Matte tin-plated leads | Ensures solderability per J-STD-002 and prevents intermetallic growth during thermal cycling |
| RoHS & halogen-free | Meets IEC 61249-2-21 and global environmental regulations for consumer and industrial products |
Applications
| Switching Mode Power Supply (SMPS) | AC/DC Adapters |
|---|---|
Use Scenario: Primary-side rectification in 5–25W offline flyback converters powering IoT gateways and smart home hubs. IC Role / Device Role / Timing Role: Full-wave bridge rectifier converting 85–265VAC mains to unregulated DC bus before PWM controller and transformer. Use Value: 400V VRRM and 30A IFSM safely handle universal input surges and startup transients without derating. | Use Scenario: Compact wall-mounted USB chargers and laptop adapters requiring high reliability in limited PCB area. IC Role / Device Role / Timing Role: Input-stage AC-to-DC conversion delivering stable bulk DC to secondary-side regulation circuitry. Use Value: ABS package footprint and 1.0A continuous rating enable high-power density while maintaining thermal margin on FR4. |
| LED Lighting Drivers | Industrial Control Power Supplies |
Use Scenario: Constant-voltage LED drivers for commercial downlights and panel lights operating in ambient temperatures up to 70°C. IC Role / Device Role / Timing Role: Mains rectification stage feeding buck or buck-boost DC-DC converter regulating LED string current. Use Value: Low 0.95V VF minimizes conduction loss and self-heating, preserving lumen maintenance over lifetime. | Use Scenario: Auxiliary power supply for PLC I/O modules and sensor interface boards in factory automation cabinets. IC Role / Device Role / Timing Role: Isolated auxiliary DC source derived from 24VAC or 120VAC control rails. Use Value: UL recognition and –55°C to +150°C operating range ensure compliance and reliability in 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 (ON Semiconductor) | Same ABS package, 400V VRRM, but higher VF (1.1V typ), lower IFSM (25A) | Suitable for lower-cost, lower-efficiency designs where thermal headroom is available | Select GBU4K only if forward loss budget allows ≥0.15V higher drop and surge margin is not critical |
| DB107S (Diotec) | Same 1A/400V rating, but SMB package (smaller footprint, higher RθJA = 110°C/W) | Better for space-constrained layouts; requires enhanced PCB copper for thermal management | Choose DB107S when board area is prioritized over thermal performance and manual rework is acceptable |
Compared with GBU4K and DB107S, the ABS4-K offers superior thermal performance (RθJL = 25°C/W), tighter VF spec (≤0.95V), and UL recognition-making it optimal for certified, thermally demanding, and production-scale adapter designs.
Availability
ABS4-K is available at Aetrix Electronics and suitable for switching mode power supplies, AC/DC adapters, and LED lighting drivers requiring stable component supply, long-term lifecycle support, and consistent parametric performance across manufacturing lots.
Supply support for ABS4-K 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 ABS4-K belongs to TSC's standard bridge rectifier product line, engineered for cost-sensitive, high-volume AC/DC front-end applications where reliability, regulatory compliance, and manufacturability are critical design requirements.
FAQ
What is the maximum continuous forward current rating for ABS4-K under typical PCB conditions?
The ABS4-K is rated for 1.0 A continuous forward current when mounted on an aluminum substrate, and 0.8 A on standard glass-epoxy PCB. This reflects its thermal design: the 25°C/W junction-to-lead resistance enables effective heat transfer to metal-core boards, making ABS4-K suitable for compact, thermally constrained power supplies where sustained 1A operation is required without forced air cooling.
Does ABS4-K meet UL safety certification requirements for end-equipment approval?
Yes, ABS4-K is UL Recognized under File # E-326854. This certification covers construction, flammability (UL 94V-0), and electrical safety parameters, allowing designers to leverage ABS4-K in UL-listed end products-such as adapters and LED drivers-without needing additional component-level safety testing, provided the final design adheres to the recognized conditions of use.
What is the reverse leakage current specification for ABS4-K at elevated temperature?
ABS4-K specifies a maximum reverse leakage current of 150 µA per diode at 125°C and rated reverse voltage. This value-measured under 30ms pulse conditions-is critical for low-standby-power applications like always-on LED lighting drivers, where excessive leakage could increase no-load consumption and reduce energy efficiency compliance margins.
Can ABS4-K be used as a direct replacement for ABS6-K or ABS8-K in an existing design?
No, ABS4-K is not a direct replacement for ABS6-K or ABS8-K due to its lower 400V VRRM rating versus 600V and 800V respectively. Substituting ABS4-K in a design originally specifying ABS6-K risks reverse breakdown under nominal 230VAC operation with line surges. Always verify peak reverse stress in the target circuit before interchange, and consult the ABS4-K datasheet's absolute maximum ratings table for safe operating limits.
What does the "K" suffix indicate in ABS4-K ordering code?
The "K" suffix in ABS4-K denotes tape-and-reel packaging: 5,000 units per reel. This format is optimized for automated SMT placement. The "x" in ABSx-K encodes voltage rating-so ABS4-K specifically identifies the 400V variant within the ABS4-K through ABS10-K family, with marking code "ABS4" laser-etched on the device body per Taiwan Semiconductor's C2103 specification.
ABS4-K Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- 4-SMD, Gull Wing
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Diode Type:
- Single Phase
- Technology:
- Standard
- Voltage - Peak Reverse (Max):
- 400 V
- Current - Average Rectified (Io):
- 1 A
- Voltage - Forward (Vf) (Max) @ If:
- 950 mV @ 400 mA
- Current - Reverse Leakage @ Vr:
- 10 µA @ 400 V
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- ABS
ABS4-K FAQ
1.How can I place an order for ABS4-K through Aetrix?
Please submit a Request for Quotation (RFQ) for ABS4-K 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 ABS4-K reliable?
The price and inventory of ABS4-K are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ABS4-K is usually 5 days.
3.What payment methods are accepted for ABS4-K?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ABS4-K transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ABS4-K?
ABS4-K orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ABS4-K 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 ABS4-K?
For technical support, including ABS4-K datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ABS4-K requirements.
6.How does Aetrix verify that ABS4-K is sourced from the original manufacturer or authorized distributors?
All ABS4-K 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 ABS4-K meets industry standards.
7.What is the process for return or replacement of ABS4-K?
All ABS4-K units undergo pre-shipment inspection (PSI). If there is an issue with ABS4-K, 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 ABS4-K part is unused and in its original packaging.
Return procedure for ABS4-K:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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