Taiwan Semiconductor Corporation S8JC R7G

Overview

S8JC R7G from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 600 V repetitive peak reverse voltage and 8 A average forward current, with 200 A surge capability (8.3 ms), used in high-efficiency AC/DC power conversion stages of industrial SMPS and lighting drivers.

For engineers reviewing the S8JC R7G datasheet, S8JC R7G pinout, S8JC R7G application, or S8JC R7G equivalent, key selection criteria include its DO-214AB (SMC) package thermal resistance (R_θJL = 12.5°C/W), low 0.985 V max forward voltage at 8 A, and J-STD-020 Level 1 moisture sensitivity for reflow compatibility.

Technical Context

This single-die, glass-passivated junction rectifier operates across -55°C to +150°C junction temperature range and delivers stable reverse leakage (<10 µA at 25°C, <250 µA at 125°C) under rated 600 V reverse bias. Its 48 pF junction capacitance at 4 V supports moderate-frequency switching operation without excessive capacitive loss.

The device uses matte tin-plated leads compliant with J-STD-002 solderability and meets JESD 201 Class 2 whisker resistance. Polarity is marked by a visible cathode band on the molded DO-214AB body, and the compound satisfies UL 94V-0 and IEC 61249-2-21 halogen-free requirements.

Key Specifications

Pinout & Package

Package: DO-214AB (SMC), surface-mount, single-anode/single-cathode configuration with cathode band marking. Body dimensions: 7.75 mm × 6.25 mm × 2.45 mm (L × W × H), lead pitch 5.55 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-current rectifier applications.

Compared with STTH8R06DJF and VS-8EWH06FN-M3, the S8JC R7G offers superior moisture robustness (Level 1), tighter reverse leakage control, and optimized thermal path for SMT-only layouts-making it ideal for high-volume, reflow-only manufacturing of compact power supplies.

Availability

S8JC R7G is available at Aetrix Electronics and suitable for industrial SMPS, LED driver front ends, and AC-DC adapter designs requiring stable component supply, consistent parametric performance, and RoHS/halogen-free compliance.

Supply support for S8JC R7G 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 power discrete manufacturer headquartered in Hsinchu, Taiwan, serving global industrial, computing, and consumer markets since 1979.

The S8JC R7G belongs to TSC's S8xC family of high-reliability surface-mount rectifiers, engineered specifically for cost-sensitive yet thermally demanding AC/DC conversion in commercial and industrial power systems.

FAQ

What is the maximum junction temperature rating for the S8JC R7G?

The S8JC R7G has a maximum junction temperature (T_J) of +150°C, with operational range from -55°C to +150°C. This rating enables reliable operation in enclosed, high-ambient-temperature environments such as LED streetlight drivers or industrial motor control power supplies. Derating curves in the official datasheet define safe current limits above 75°C lead temperature. The S8JC R7G must be mounted on adequate copper area to maintain T_J ≤ 150°C under full load.

Does the S8JC R7G support lead-free reflow soldering without baking?

Yes, the S8JC R7G is rated J-STD-020 Level 1 for moisture sensitivity, meaning it can undergo standard lead-free reflow profiles (e.g., JEDEC J-STD-020 Rev D peak 260°C) without prior baking. This eliminates process steps and reduces risk of popcorn failure during assembly. The S8JC R7G's matte tin-plated leads also comply with J-STD-002 for solderability, ensuring consistent wetting and joint integrity in high-throughput SMT lines.

How does the forward voltage of the S8JC R7G compare to similar 600 V rectifiers?

The S8JC R7G specifies a maximum forward voltage (V_F) of 0.985 V at 8 A and 25°C, which is competitive with industry benchmarks. For example, it is lower than STTH8R06DJF (1.15 V max) and comparable to VS-8EWH06FN-M3 (0.95 V typical). The S8JC R7G's low V_F directly reduces conduction loss and thermal stress, especially critical in thermally constrained SMT layouts where heatsinks are impractical.

What is the significance of the "R7G" suffix in S8JC R7G?

The "R7G" suffix in S8JC R7G denotes Taiwan Semiconductor's internal packaging and environmental coding: "R" indicates tape-and-reel packaging (3,000 pcs per reel), "7" specifies green (halogen-free) molding compound per IEC 61249-2-21, and "G" confirms RoHS compliance and J-STD-020 Level 1 moisture rating. This coding ensures traceability to material composition, assembly readiness, and regulatory status-critical for automotive-tier and medical-adjacent industrial programs requiring full substance declarations.

Can the S8JC R7G replace the S8GC or S8MC in an existing design?

The S8JC R7G is not a drop-in replacement for S8GC (400 V) or S8MC (1000 V) due to differing V_RRM ratings-using S8JC R7G in a 1000 V design risks premature breakdown, while using S8MC in a 600 V circuit adds unnecessary cost and capacitance. However, within the S8xC family, the S8JC R7G shares identical DO-214AB footprint, thermal characteristics, and pinout with S8GC/S8KC/S8MC, enabling layout reuse when voltage rating is adjusted per application requirements.