Taiwan Semiconductor Corporation S1J-K

Overview

S1J-K from Taiwan Semiconductor is a 1A, 600V standard surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring glass passivated junction, 1.1V max forward voltage at 1A, 30A peak surge current, and 150°C maximum junction temperature. It serves as a primary AC/DC input rectifier in compact switching power supplies.

For engineers reviewing the S1J-K datasheet, S1J-K pinout, S1J-K application, or S1J-K equivalent, key selection criteria include repetitive peak reverse voltage (600V), thermal resistance (R_θJA = 85°C/W), reverse recovery time (1500 ns), and moisture sensitivity level (MSL 1).

Technical Context

The S1J-K is a single-die, unidirectional standard recovery rectifier optimized for cost-sensitive, medium-voltage DC–DC conversion stages. Its 1500 ns reverse recovery time and 12 pF junction capacitance reflect trade-offs favoring low conduction loss over ultra-fast switching.

Designed for surface-mount assembly with matte tin-plated leads compliant to J-STD-002, the device operates across –55°C to +150°C and meets UL 94V-0 flammability and JESD201 Class 1A whisker requirements.

Key Specifications

Pinout & Package

Package: DO-214AC (SMA), surface-mount, cathode indicated by band on body, weight ≈ 0.060 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R06U and MUR106, the S1J-K offers lowest system cost and smallest footprint for <100 kHz rectification, trading speed for simplicity, manufacturability, and thermal efficiency at rated current.

Availability

S1J-K is available at Aetrix Electronics and suitable for AC/DC adapters, industrial DC–DC converters, and motor drive auxiliary supplies requiring stable component supply and full MSL-1 handling capability.

Supply support for S1J-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 industrial, computing, and consumer markets since 1979.

The S1J-K belongs to TSC's S1x-K family of standard recovery rectifiers, engineered for high-volume, cost-optimized AC/DC front-end and general-purpose rectification where ruggedness and process consistency outweigh ultrafast switching needs.

FAQ

What is the maximum repetitive peak reverse voltage rating for the S1J-K?

The S1J-K has a maximum repetitive peak reverse voltage (V_RRM) of 600 V, as specified in the Absolute Maximum Ratings table. This value defines the highest reverse-biased voltage the diode can block repeatedly without avalanche breakdown. Designers should maintain ≥20% derating margin under worst-case transient conditions. The S1J-K is part of the S1D-K to S1M-K series, where 'J' explicitly denotes the 600 V grade.

Does the S1J-K meet RoHS and halogen-free compliance standards?

Yes, the S1J-K complies with RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21. These qualifications are confirmed in the Features section of the official datasheet (Version E2102). The device uses matte tin-plated leads and UL 94V-0 molding compound, supporting environmentally regulated industrial and consumer product certifications. No exemptions apply to the S1J-K.

What is the reverse recovery time (t_rr) of the S1J-K and how does it impact circuit design?

The S1J-K has a typical reverse recovery time (t_rr) of 1500 ns under IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A test conditions. This relatively long t_rr indicates standard recovery behavior, making the S1J-K best suited for line-frequency or low-to-moderate switching frequency applications (<100 kHz). Using the S1J-K in high-frequency topologies may increase switching losses and EMI; designers should verify thermal rise and snubber requirements. The S1J-K datasheet specifies this parameter in the Electrical Specifications table.

Is the S1J-K suitable for automated SMT assembly, and what is its moisture sensitivity level?

Yes, the S1J-K is designed for automated placement and reflow soldering. Its moisture sensitivity level is MSL Level 1 per J-STD-020, meaning it has unlimited floor life and requires no baking prior to assembly. This simplifies manufacturing logistics and eliminates moisture-related popcorning risk. The DO-214AC (SMA) package, matte tin plating, and JESD201 Class 1A whisker resistance further ensure compatibility with high-yield SMT lines. All these attributes are documented in the Mechanical Data and Features sections of the S1J-K datasheet.

What thermal resistance values are specified for the S1J-K, and how do they affect power dissipation?

The S1J-K specifies R_θJL = 30°C/W (junction-to-lead) and R_θJA = 85°C/W (junction-to-ambient) under standard JEDEC test conditions. At 1 A forward current and 1.1 V forward drop, power dissipation is ~1.1 W; with R_θJA = 85°C/W, this yields ~94°C junction-to-ambient rise - requiring careful PCB copper area design or derating above 70°C ambient. The S1J-K datasheet confirms these values in the Thermal Performance table and recommends minimum pad layout per the Package Outline Dimensions sheet.