Taiwan Semiconductor Corporation S1J-T

Overview

S1J-T from Taiwan Semiconductor is a 1A, 600V standard surface-mount silicon rectifier diode in DO-214AC (SMA) package, featuring glass-passivated junction, low forward voltage drop (1.1 V max at 1 A), and high surge current capability (30 A, 8.3 ms half-sine). It serves as a primary AC/DC front-end rectifier in compact power supplies.

For engineers reviewing the S1J-T datasheet, S1J-T pinout, S1J-T application, or S1J-T equivalent, key selection criteria include repetitive peak reverse voltage (600 V), thermal resistance (R_θJA = 85 °C/W), moisture sensitivity level (MSL 1), and RoHS/halogen-free compliance for automated SMT assembly and industrial-grade reliability.

Technical Context

The S1J-T is a single-die, unidirectional standard recovery rectifier with a typical junction capacitance of 12 pF at 4 V and reverse recovery time of 1500 ns under specified test conditions (I_F = 0.5 A, I_R = 1.0 A, I_rr = 0.25 A). Its glass passivation ensures stable performance across temperature extremes.

Designed for non-critical switching applications, it operates with a maximum junction temperature of 150 °C and exhibits reverse leakage of ≤1 µA at 25 °C and ≤50 µA at 125 °C - enabling use in thermally constrained DC-DC converters and auxiliary power rails where fast recovery is not required.

Key Specifications

Pinout & Package

Package: DO-214AC (SMA), surface-mount, cathode-indicated by band. Matte tin-plated leads, J-STD-002 solderable, UL 94V-0 molding compound, MSL 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH1R06U and SB160-E3/54, the S1J-T offers optimal balance of cost, surge robustness, and thermal stability for 50/60 Hz–100 kHz line- and transformer-fed rectification - without over-specifying speed or sacrificing voltage margin.

Availability

S1J-T is available at Aetrix Electronics and suitable for AC/DC adapters, industrial control power supplies, and LED driver auxiliary supplies requiring stable component supply and long-lifecycle availability.

Supply support for S1J-T 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 Taiwanese manufacturer specializing in discrete power semiconductors, including rectifiers, TVS diodes, and MOSFETs, with ISO/TS 16949 and IATF 16949 certification.

The S1J-T belongs to TSC's S1x-T standard rectifier family, engineered for cost-sensitive, high-volume AC/DC and DC-DC power conversion where reliability, manufacturability, and regulatory compliance are prioritized over ultrafast switching.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the S1J-T?

The S1J-T has a V_RRM of 600 V, confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version E2102). This rating defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It directly determines suitability for 264 V_AC mains input (peak ≈ 373 V) with adequate safety margin. The S1J-T must not be substituted with lower-voltage variants like S1G-T (400 V) in such applications.

Does the S1J-T have a specified reverse recovery time (t_rr)?

Yes, the S1J-T has a typical reverse recovery time (t_rr) of 1500 ns, measured under I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A per the Electrical Specifications table. This confirms its classification as a standard (not fast or ultrafast) recovery rectifier. Designers should avoid using the S1J-T in topologies operating above ~100 kHz where t_rr-related losses and EMI become dominant.

Is the S1J-T RoHS and halogen-free compliant?

Yes, the S1J-T is RoHS compliant and halogen-free per IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor datasheet. This compliance applies to all materials in the DO-214AC (SMA) package, including molding compound and matte tin-plated leads. No exemptions or exceptions are noted for the S1J-T in Version E2102 documentation.

What is the thermal resistance from junction to ambient (R_θJA) for the S1J-T?

The S1J-T has a junction-to-ambient thermal resistance (R_θJA) of 85 °C/W, specified under Thermal Performance in the datasheet. This value assumes standard JEDEC test conditions (single device on 1-inch² FR-4 board with 2 oz copper). In practice, achieving this R_θJA requires ≥25 mm² of copper pour connected to both terminals; insufficient copper will raise operating temperature and reduce lifetime.

What does the marking code "S1J" indicate on the S1J-T device body?

The marking code "S1J" on the S1J-T corresponds directly to its voltage rating: "J" denotes 600 V V_RRM, per the Marking Code table in the Absolute Maximum Ratings section. This coding aligns with industry-standard JEDEC conventions used across the S1D-T through S1M-T series. Devices marked "S1J" are guaranteed to meet all S1J-T specifications - no other variant (e.g., S1K-T or S1G-T) shares this marking.