Taiwan Semiconductor Corporation S10KC

Overview

S10KC from Taiwan Semiconductor is a 10A, 800V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low forward voltage drop (≤1.1 V at 10 A), and high surge capability (250 A, 8.3 ms). It serves as the main output rectifier in high-efficiency AC/DC converters for industrial power supplies.

For engineers reviewing the S10KC datasheet, S10KC pinout, S10KC application, or S10KC equivalent, key selection factors include its 800 V repetitive peak reverse voltage, 10 A average forward current rating, thermal resistance (R_θJL = 10 °C/W), and RoHS/halogen-free compliance for regulated power conversion designs.

Technical Context

The S10KC is a single-die, standard recovery silicon rectifier optimized for switching-mode power supply (SMPS) output stages where moderate switching speed and high surge tolerance are prioritized over ultrafast recovery. Its 800 V V_RRM rating targets mid-voltage DC bus applications such as 48 V–60 V telecom and server PSUs.

Thermally, it uses a DO-214AB (SMC) package with matte tin-plated leads and UL 94V-0 molding compound, enabling reliable automated placement and soldering per J-STD-002. Junction temperature range is –55 °C to +150 °C, with R_θJA = 47 °C/W under standard PCB conditions.

Key Specifications

Pinout & Package

DO-214AB (SMC) package: molded plastic case with two coplanar gull-wing leads; cathode indicated by molded band; lead finish is matte tin per J-STD-002; moisture sensitivity level (MSL) = 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STTH10R06DJF and MUR1080CT, the S10KC offers superior voltage margin at 800 V in a compact, MSL Level 1 surface-mount package-ideal for space-constrained, high-volume industrial SMPS where standard recovery speed is acceptable and thermal coupling to PCB is preferred over heatsink mounting.

Availability

S10KC is available at Aetrix Electronics and suitable for industrial SMPS, LED drivers, and AC/DC adapters requiring stable component supply, consistent parametric performance, and RoHS-compliant sourcing.

Supply support for S10KC 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 industrial, computing, and consumer markets since 1979.

The S10KC belongs to TSC's S10x series of high-current surface-mount rectifiers, engineered specifically for cost-sensitive, high-reliability power conversion applications demanding robust surge handling and simplified thermal management.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) of the S10KC?

The S10KC has a V_RRM rating of 800 V, verified per Taiwan Semiconductor's D2102 datasheet revision. This value defines the highest instantaneous reverse voltage the device can block repeatedly without breakdown. It is critical for ensuring safe operation in 400 V DC bus or 280 V RMS AC applications where transient spikes may occur. The S10KC maintains this rating across its full operating temperature range (–55 °C to +150 °C).

Does the S10KC have a specified forward voltage (V_F) at full rated current?

Yes-the S10KC specifies V_F ≤ 1.1 V at I_F = 10 A and T_J = 25 °C, measured under pulsed conditions (PW = 0.3 ms). This value reflects typical conduction loss under nominal load. At higher junction temperatures (e.g., 125 °C), V_F decreases slightly due to semiconductor physics, but system-level thermal design must ensure average dissipation remains within limits defined by R_θJL = 10 °C/W.

Is the S10KC suitable for automated SMT assembly without pre-baking?

Yes-the S10KC is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life and may be placed directly onto PCBs and reflowed without prior baking. Its DO-214AB (SMC) package features matte tin-plated leads compliant with J-STD-002, and the molding compound meets UL 94V-0. These attributes make the S10KC fully compatible with high-throughput, no-bake SMT lines used in industrial power supply manufacturing.

How does the S10KC compare to the S10MC in terms of voltage rating and application scope?

The S10KC is rated for 800 V V_RRM, while the S10MC is rated for 1000 V. Both share identical I_F = 10 A, I_FSM = 250 A, package (DO-214AB), and thermal specs. The S10KC is optimal for 400–560 V DC bus applications (e.g., 48 V telecom PSUs), whereas the S10MC targets higher-voltage systems like 700 V PFC stages or 3-phase rectification. Selection depends strictly on required reverse voltage margin-not on performance or footprint differences.

What is the junction-to-lead thermal resistance (R_θJL) of the S10KC, and why does it matter?

The S10KC has R_θJL = 10 °C/W, measured from junction to lead under standardized test conditions. This parameter quantifies how effectively heat flows from the silicon die to the PCB copper via the leads-critical for predicting junction temperature rise under load. When mounted on a 1 in² 2-oz copper pad, this low R_θJL enables the S10KC to sustain 10 A continuous current without exceeding 150 °C T_J, even in enclosed industrial enclosures.