Taiwan Semiconductor Corporation TS10K40

Overview

TS10K40 from Taiwan Semiconductor is a 10A, 400V standard quad bridge rectifier in TS4K package, featuring 150A surge capability, ≤0.1µA typical reverse leakage at 25°C, and UL Recognized (E-326243) construction. It serves as the AC-to-DC front-end in compact switching power supplies for consumer electronics.

For engineers reviewing the TS10K40 datasheet, TS10K40 pinout, TS10K40 application, or TS10K40 equivalent, key selection criteria include its 400V V_RRM, 2.3°C/W junction-to-case thermal resistance, AEC-Q101 availability (H-suffix), and TS4K mechanical compatibility with high-density PCB layouts.

Technical Context

The TS10K40 integrates four silicon diodes in a single-phase full-wave bridge configuration, enabling direct AC line rectification without external interconnects. Its TS4K molded package supports surface-mount assembly with matte tin-plated leads compliant to J-STD-002 solderability and JESD201 Class 2 whisker resistance.

Thermally, it sustains continuous 10A forward current up to 150°C junction temperature, with derating beginning at case temperatures above 50°C. Electrical behavior is defined by 1.1V max forward voltage at 10A/25°C and 500µA max reverse current at 125°C under rated 400V reverse bias.

Key Specifications

Pinout & Package

Package: TS4K - 4-terminal molded plastic case with integrated bridge topology; dimensions per Taiwan Semiconductor outline drawing; matte tin-plated leads; UL 94V-0 rated molding compound.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar bridge rectifier applications.

Compared with GBU10K and GBJ1004, the TS10K40 offers superior thermal performance (2.3°C/W), lower typical leakage, UL recognition, and optional AEC-Q101 qualification-making it optimal for space-constrained, certified, and automotive-adjacent applications.

Availability

TS10K40 is available at Aetrix Electronics and suitable for switching mode power supplies, AC-DC adapters, and flat-panel display power modules requiring stable component supply across production lifecycles.

Supply support for TS10K40 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 TS10K series targets high-reliability AC-DC conversion in consumer, industrial, and automotive-qualified power supplies, emphasizing thermal efficiency, surge robustness, and regulatory compliance.

FAQ

What is the maximum junction temperature rating for TS10K40?

The TS10K40 has a maximum junction temperature (T_J) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet. This rating allows operation in thermally demanding environments such as enclosed TV power supplies or high-ambient industrial adapters. Derating begins above 50°C case temperature, and thermal design must account for its 2.3°C/W junction-to-case resistance. The TS10K40 maintains specified electrical parameters-including 1.1V max forward voltage and 500µA max reverse current at 125°C-within this limit.

Does TS10K40 support automotive applications?

Yes, the TS10K40 is available in an AEC-Q101 qualified version denoted by the 'H' suffix (TS10K40H), explicitly validated for automotive-grade reliability per stress test requirements including temperature cycling, humidity, and high-temperature operating life. While the base TS10K40 meets industrial standards, only TS10K40H is approved for infotainment, body control, and ADAS auxiliary power modules. Its halogen-free construction and UL recognition further support compliance with automotive OEM material declarations.

What is the forward voltage specification for TS10K40 at full rated current?

The TS10K40 specifies a maximum forward voltage (V_F) of 1.1 V at 10 A and 25°C junction temperature, measured under pulsed conditions (PW = 0.3 ms). At elevated temperatures (125°C), V_F decreases slightly due to silicon's negative temperature coefficient. This value is critical for conduction loss calculation in 100W-class SMPS designs, where the TS10K40 delivers ~15% lower loss than legacy 1N4007-based bridges under identical load conditions.

How does the TS10K40 pinout differ from discrete diode layouts?

The TS10K40 uses a fixed 4-pin TS4K package with terminals labeled ~, ~, +, and –, integrating all four diodes of a full-wave bridge into a single monolithic structure. Unlike discrete layouts requiring four separate components and PCB traces, the TS10K40 eliminates interconnection parasitics and saves >70% board area. Its pinout is standardized across the TS10Kx family, enabling drop-in replacement within the same voltage grade-no redesign needed when upgrading from TS10K40 to TS10K60 in existing TS4K footprints.

Is TS10K40 compliant with RoHS and halogen-free standards?

Yes, the TS10K40 is fully RoHS compliant and halogen-free per IEC 61249-2-21, confirmed in Taiwan Semiconductor's official documentation. Its molding compound contains no brominated flame retardants or chlorine-based additives, and lead content is below 1000 ppm. This compliance supports export to EU, China, and Korea markets and aligns with major OEM environmental policies. The device carries no exemptions and is suitable for green manufacturing processes including lead-free reflow soldering.