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Home > Products > Discrete Semiconductor Products > Diodes > Rectifiers > Single Diodes

Taiwan Semiconductor Corporation S8KCH

Name: S8KCH
Brand: Taiwan Semiconductor Corporation
SKU: S8KCH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S8KCH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S8KCH.pdf

Description:: DIODE GEN PURP 800V 8A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:2,940

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Product details

Overview

S8KCH from Taiwan Semiconductor is an AEC-Q101-qualified surface-mount silicon rectifier diode in DO-214AB (SMC) package, rated for 8 A average forward current and 800 V repetitive peak reverse voltage, with 0.985 V max forward voltage at 8 A and 25°C, used in automotive DC-DC converters and snubber circuits.

For engineers reviewing the S8KCH datasheet, S8KCH pinout, S8KCH application, or S8KCH equivalent, key selection factors include its 800 V V_RRM, 200 A I_FSM (8.3 ms), glass-passivated junction, moisture sensitivity level 1 rating, and AEC-Q101 qualification for under-hood automotive use.

Technical Context

The S8KCH is a single-die, unidirectional, standard recovery rectifier optimized for high-surge industrial and automotive power conversion. Its 12.5 °C/W junction-to-lead thermal resistance enables efficient heat transfer to PCB copper, while the DO-214AB package supports automated placement and meets UL 94V-0 flammability requirements.

Electrical behavior is defined by low forward voltage drop (≤0.985 V @ 8 A), tight reverse leakage (≤10 µA @ 25°C, ≤250 µA @ 125°C), and 48 pF junction capacitance at 1 MHz/4 V - parameters critical for minimizing conduction loss and EMI in switching snubbers and DC-DC stages.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - maximum non-repetitive reverse blocking voltage; defines safe operating range in 400–800 V bus applications
I_F	8 A - continuous average forward current at T_L = 115°C; sets steady-state power handling capability
I_FSM (8.3 ms)	200 A - surge withstand without failure; supports inrush and fault-current robustness in automotive systems
V_F (max)	0.985 V @ 8 A, 25°C - low conduction loss reduces thermal stress and improves efficiency in high-current paths
T_J max	+150°C - extended junction temperature rating enables operation in under-hood environments
R_θJL	12.5 °C/W - low thermal resistance from junction to lead allows direct PCB copper heatsinking
Moisture Sensitivity	Level 1 (per J-STD-020) - no bake requirement before reflow, simplifying SMT assembly

Pinout & Package

DO-214AB (SMC) surface-mount package with cathode indicated by molded band; leads are matte tin-plated, solderable per J-STD-002, and meet JESD 201 Class 2 whisker resistance.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to lower-potential side of circuit; must be routed with adequate copper area for 8 A continuous current
Cathode	Forward current exit / reverse voltage blocking terminal	Marked by band; ties to higher-potential node; determines polarity in bridge or snubber configurations

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated reliability for automotive power modules, including temperature cycling, HTRB, and UHAST
Glass-passivated junction	Enhanced environmental protection against humidity and contamination, improving long-term reverse leakage stability
Low V_F (≤0.985 V)	Reduces power dissipation by ~1.2 W vs. typical 1.15 V diodes at 8 A, lowering thermal design burden
High I_FSM (200 A, 8.3 ms)	Withstands transient overloads common in automotive load-dump and motor-commutation events
Halogen-free & RoHS compliant	Meets IEC 61249-2-21 and EU RoHS directives for environmentally regulated end equipment

Applications

Automotive DC-DC Converters	Car Lighting Systems
Use Scenario: High-efficiency 12 V to 48 V bidirectional DC-DC converter in mild hybrid vehicles. IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck-boost topology. Use Value: 800 V V_RRM and 200 A I_FSM support 48 V bus transients; low V_F minimizes conduction loss at 8 A continuous output.	Use Scenario: LED headlamp driver with active snubber network to suppress inductive kickback. IC Role / Device Role / Timing Role: Snubber diode clamping flyback energy during MOSFET turn-off. Use Value: Fast recovery characteristics and 48 pF C_J limit ringing; AEC-Q101 ensures reliability across thermal cycles.
Industrial Power Supplies	General-Purpose Rectification
Use Scenario: Front-end AC-DC rectification stage in DIN-rail mounted 24 V industrial PSU. IC Role / Device Role / Timing Role: Primary-side bridge rectifier leg in full-wave configuration. Use Value: 150°C T_J max and 12.5 °C/W R_θJL enable stable operation at 70°C ambient with minimal heatsinking.	Use Scenario: Input rectification in consumer-grade AC adapters and auxiliary power rails. IC Role / Device Role / Timing Role: General-purpose unidirectional current path with reverse voltage blocking. Use Value: Level 1 MSL and tape-and-reel packaging simplify automated manufacturing; RoHS/halogen-free compliance meets global market access requirements.

Automotive DC-DC Converters

Car Lighting Systems

Use Scenario: High-efficiency 12 V to 48 V bidirectional DC-DC converter in mild hybrid vehicles.

IC Role / Device Role / Timing Role: Output rectifier in synchronous or asynchronous buck-boost topology.

Use Value: 800 V V_RRM and 200 A I_FSM support 48 V bus transients; low V_F minimizes conduction loss at 8 A continuous output.

Use Scenario: LED headlamp driver with active snubber network to suppress inductive kickback.

IC Role / Device Role / Timing Role: Snubber diode clamping flyback energy during MOSFET turn-off.

Use Value: Fast recovery characteristics and 48 pF C_J limit ringing; AEC-Q101 ensures reliability across thermal cycles.

Industrial Power Supplies

General-Purpose Rectification

Use Scenario: Front-end AC-DC rectification stage in DIN-rail mounted 24 V industrial PSU.

IC Role / Device Role / Timing Role: Primary-side bridge rectifier leg in full-wave configuration.

Use Value: 150°C T_J max and 12.5 °C/W R_θJL enable stable operation at 70°C ambient with minimal heatsinking.

Use Scenario: Input rectification in consumer-grade AC adapters and auxiliary power rails.

IC Role / Device Role / Timing Role: General-purpose unidirectional current path with reverse voltage blocking.

Use Value: Level 1 MSL and tape-and-reel packaging simplify automated manufacturing; RoHS/halogen-free compliance meets global market access requirements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Vishay VS-8EWH08FN-M3/45	Same DO-214AB package, 800 V V_RRM, but 0.92 V typical V_F (vs. 0.985 V max for S8KCH); slightly lower I_FSM (175 A)	Preferred where ultra-low conduction loss dominates; less suited for extreme surge-limited designs	Select when optimizing for efficiency over surge margin; verify layout compatibility with identical footprint
ON Semiconductor MUR880EG	Ultrafast recovery (t_rr ≈ 75 ns vs. standard recovery >1 µs for S8KCH); same 8 A/800 V ratings	Better for high-frequency SMPS (>100 kHz); not recommended for snubber or line-frequency rectification due to higher EMI risk	Choose only if fast switching is required; avoid in snubber roles where standard recovery reduces ringing

Compared with VS-8EWH08FN-M3/45 and MUR880EG, the S8KCH offers superior surge robustness (200 A vs. 175 A) and AEC-Q101 validation for automotive use, while trading off speed and marginal V_F for cost-effective, thermally stable standard recovery performance in DC-DC and snubber applications.

Availability

S8KCH is available at Aetrix Electronics and suitable for automotive DC-DC converters, car lighting systems, and industrial power supplies requiring stable component supply, AEC-Q101 compliance, and high-surge rectification capability.

Supply support for S8KCH 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 automotive, industrial, and consumer markets since 1979.

The S8KCH belongs to TSC's AEC-Q101-qualified S8xCH rectifier family, designed specifically for high-reliability, high-surge automotive power conversion and industrial rectification where thermal stability and process consistency are critical.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) for the S8KCH?

The S8KCH has a V_RRM of 800 V, as specified in the Absolute Maximum Ratings table. This value is fixed for the S8KCH variant within the S8GCH–S8MCH series and defines its safe reverse-bias operating limit in applications such as DC-DC converters and snubbers. Exceeding this voltage risks avalanche breakdown and permanent damage to the S8KCH.

Is the S8KCH suitable for automotive applications?

Yes, the S8KCH is AEC-Q101 qualified and explicitly listed for automotive applications in its official documentation. Its construction - including glass-passivated junction, moisture sensitivity level 1, and operation up to +150°C - meets stringent automotive reliability requirements. The S8KCH is deployed in car lighting, engine control DC-DC stages, and other under-hood systems where the S8KCH's 800 V rating and 200 A surge capability are essential.

What package type does the S8KCH use, and what are its key mechanical features?

The S8KCH uses the DO-214AB (SMC) surface-mount package. Key mechanical features include a UL 94V-0 compliant molding compound, matte tin-plated leads solderable per J-STD-002, polarity indicated by a cathode band, and a weight of approximately 0.270 g. The S8KCH's DO-214AB outline matches JEDEC standards and supports automated placement without special handling.

What is the forward voltage (V_F) specification for the S8KCH at rated current?

The S8KCH has a maximum forward voltage of 0.985 V at 8 A and 25°C, measured under pulsed conditions (PW = 0.3 ms). This V_F value reflects conduction loss under typical operating conditions and is critical for thermal design. Real-world V_F of the S8KCH may decrease slightly at elevated junction temperatures but remains bounded by the datasheet maximum across its full operating range.

Does the S8KCH have halogen-free and RoHS compliance certifications?

Yes, the S8KCH is both RoHS compliant and halogen-free per IEC 61249-2-21. These certifications are explicitly stated in the FEATURES section of the official documentation and verified through material declarations. Compliance applies to the full S8KCH device, including mold compound and lead finish, ensuring suitability for global commercial and automotive markets with strict environmental regulations.

S8KCH Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-214AB, SMC

Packaging:: Tape & Reel (TR)

Product Status:: Active

Technology:: Standard

Voltage - DC Reverse (Vr) (Max):: 800 V

Current - Average Rectified (Io):: 8A

Voltage - Forward (Vf) (Max) @ If:: 985 mV @ 8 A

Speed:: Standard Recovery >500ns, > 200mA (Io)

Reverse Recovery Time (trr):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 800 V

Capacitance @ Vr, F:: 48pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: DO-214AB (SMC)

Operating Temperature - Junction:: -55°C ~ 150°C

S8KCH FAQ

1.How can I place an order for S8KCH through Aetrix?

Please submit a Request for Quotation (RFQ) for S8KCH on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for S8KCH reliable?

The price and inventory of S8KCH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S8KCH is usually 5 days.

3.What payment methods are accepted for S8KCH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S8KCH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S8KCH?

S8KCH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S8KCH order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for S8KCH?

For technical support, including S8KCH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S8KCH requirements.

6.How does Aetrix verify that S8KCH is sourced from the original manufacturer or authorized distributors?

All S8KCH products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that S8KCH meets industry standards.

7.What is the process for return or replacement of S8KCH?

All S8KCH units undergo pre-shipment inspection (PSI). If there is an issue with S8KCH, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The S8KCH part is unused and in its original packaging.

Return procedure for S8KCH:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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