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

Taiwan Semiconductor Corporation S5KH

Name: S5KH
Brand: Taiwan Semiconductor Corporation
SKU: S5KH
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S5KH

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S5KH.pdf

Description:: 5A, 800V, STANDARD RECOVERY RECT

Quantity:: RFQ Add To RFQ list

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Inventory:6,000

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Product details

Overview

S5KH from Taiwan Semiconductor is a surface-mount silicon rectifier diode rated for 800 V repetitive peak reverse voltage (V_RRM), 5 A average forward current (I_F), and 100 A non-repetitive surge current (I_FSM). It features glass-passivated junction, low 1.15 V forward voltage at 5 A/25°C, and DO-214AB (SMC) package - used in automotive lighting, DC-DC converters, and snubber circuits.

For engineers reviewing the S5KH datasheet, S5KH pinout, S5KH application, or S5KH equivalent, key selection criteria include its AEC-Q101 qualification, 1500 ns reverse recovery time, 13 °C/W junction-to-lead thermal resistance, J-STD-020 Level 1 moisture sensitivity, and cathode-band polarity marking - all critical for high-reliability automotive and industrial power rectification.

Technical Context

The S5KH is a single-die, standard recovery rectifier optimized for medium-voltage, medium-current switching applications where cost-effective unidirectional conduction and robust surge handling are required. Its 800 V V_RRM, 100 A I_FSM, and 150°C maximum junction temperature support operation in thermally constrained automotive and industrial environments.

Electrical behavior is defined by a typical 60 pF junction capacitance at 4 V reverse bias and 1 MHz, 10 µA max reverse leakage at 25°C, and 250 µA at 125°C - indicating stable blocking performance across temperature. The 1500 ns reverse recovery time (trr) confirms suitability for line-frequency and low-frequency switching, not high-frequency SMPS.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - supports rectification in 600 V AC line-derived supplies and automotive 48 V systems with margin.
I_F	5 A continuous - enables use in mid-power DC-DC output stages and LED driver return paths without forced cooling.
I_FSM	100 A (8.3 ms half-sine) - withstands inrush and fault currents in automotive lighting and motor control snubbers.
V_F	≤1.15 V @ 5 A, 25°C - reduces conduction loss and thermal stress compared to higher-V_F alternatives.
trr	1500 ns - limits switching loss and EMI in <100 kHz applications; not suitable for >200 kHz SMPS.
R_θJL	13 °C/W - allows direct PCB copper pour heat sinking to maintain T_J ≤150°C under full load.
Moisture Sensitivity	Level 1 per J-STD-020 - no bake requirement before reflow; compatible with standard SMT assembly.

Pinout & Package

Package: DO-214AB (SMC), surface-mount, molded plastic case with matte tin-plated leads; polarity indicated by cathode band; weight ≈0.210 g.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Positive input terminal	Connects to higher-potential side of AC source or switch node; accepts full surge current path.
Cathode (Lead 2)	Output / common return	Marked by band; connects to load ground or DC bus; carries full forward current and defines reference for reverse blocking.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive underhood and lighting applications per stress test requirements (HTOL, TC, HAST, etc.).
Glass-passivated junction	Enhances long-term reliability and humidity resistance vs. epoxy-passivated diodes in harsh environments.
Low V_F (≤1.15 V)	Reduces power dissipation by ~0.5 W vs. 1.65 V diodes at 5 A, lowering heatsink requirements.
J-STD-020 Level 1 rating	Enables direct placement into reflow ovens without pre-baking - simplifies manufacturing and reduces process risk.
UL 94V-0 molding compound	Meets flammability safety standards for enclosed automotive and industrial power modules.

Applications

Automotive Lighting	DC-DC Converter Output Rectification
Use Scenario: High-brightness LED headlamp modules requiring reverse polarity protection and transient suppression. IC Role / Device Role / Timing Role: Unidirectional current path and snubber clamp; handles 100 A surges during load dump events. Use Value: AEC-Q101 qualification and 150°C T_JMAX ensure operational integrity in under-hood thermal environments.	Use Scenario: Secondary-side rectification in isolated 12 V–48 V automotive DC-DC converters. IC Role / Device Role / Timing Role: Standard recovery rectifier delivering 5 A DC output; blocks 800 V reflected transients. Use Value: 13 °C/W R_θJL enables direct thermal coupling to PCB copper, eliminating discrete heatsinks.
Snubber Circuit Protection	Industrial AC Line Input Rectification
Use Scenario: RC snubber networks across IGBTs/MOSFETs in motor drives and power inverters. IC Role / Device Role / Timing Role: Clamps voltage spikes during switching transitions; absorbs energy from L_leak × di/dt. Use Value: 100 A I_FSM and 1500 ns trr provide predictable clamping response without oscillation or secondary breakdown.	Use Scenario: Bridge rectifier front-end in industrial 230 V AC input power supplies. IC Role / Device Role / Timing Role: Single-phase rectification element in discrete bridge configurations or voltage doubler topologies. Use Value: 800 V V_RRM provides 2× margin over 230 V RMS (650 V peak), ensuring long-term reliability under line surges.

Automotive Lighting

DC-DC Converter Output Rectification

Use Scenario: High-brightness LED headlamp modules requiring reverse polarity protection and transient suppression.

IC Role / Device Role / Timing Role: Unidirectional current path and snubber clamp; handles 100 A surges during load dump events.

Use Value: AEC-Q101 qualification and 150°C T_JMAX ensure operational integrity in under-hood thermal environments.

Use Scenario: Secondary-side rectification in isolated 12 V–48 V automotive DC-DC converters.

IC Role / Device Role / Timing Role: Standard recovery rectifier delivering 5 A DC output; blocks 800 V reflected transients.

Use Value: 13 °C/W R_θJL enables direct thermal coupling to PCB copper, eliminating discrete heatsinks.

Snubber Circuit Protection

Industrial AC Line Input Rectification

Use Scenario: RC snubber networks across IGBTs/MOSFETs in motor drives and power inverters.

IC Role / Device Role / Timing Role: Clamps voltage spikes during switching transitions; absorbs energy from L_leak × di/dt.

Use Value: 100 A I_FSM and 1500 ns trr provide predictable clamping response without oscillation or secondary breakdown.

Use Scenario: Bridge rectifier front-end in industrial 230 V AC input power supplies.

IC Role / Device Role / Timing Role: Single-phase rectification element in discrete bridge configurations or voltage doubler topologies.

Use Value: 800 V V_RRM provides 2× margin over 230 V RMS (650 V peak), ensuring long-term reliability under line surges.

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-5EWH08-M3	Same DO-214AB package, 800 V V_RRM, but 5.5 A I_F and 125 A I_FSM; trr = 2000 ns.	Higher surge rating suits motor drive snubbers; slower recovery limits use in faster-switching converters.	Select if higher I_FSM margin is needed and trr >1500 ns is acceptable.
ON Semiconductor MUR580	DO-214AC (SMA) package, 800 V V_RRM, 5 A I_F, but ultrafast trr = 75 ns; R_θJA = 65 °C/W.	Smaller footprint but lower thermal capability; suited for space-constrained, high-frequency designs.	Select only when board space is critical and thermal design accommodates higher R_θJA.

Compared with VS-5EWH08-M3 and MUR580, the S5KH offers balanced surge robustness, thermal performance (R_θJL = 13 °C/W), and AEC-Q101 compliance - making it optimal for automotive lighting and industrial snubbers where reliability and thermal management outweigh ultrafast switching needs.

Availability

S5KH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output rectification, and industrial snubber circuits requiring stable component supply, AEC-Q101 qualification, and consistent DO-214AB packaging.

Supply support for S5KH 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, specializing in power devices, rectifiers, TVS diodes, and MOSFETs for automotive and industrial markets.

The S5KH belongs to TSC's S5xH family of AEC-Q101-qualified surface-mount rectifiers, designed specifically for high-reliability automotive power conversion and protection - emphasizing thermal robustness, surge resilience, and manufacturability in automated SMT lines.

FAQ

What is the maximum junction temperature rating for the S5KH?

The S5KH has a maximum junction temperature (T_JMAX) of +150°C, verified per absolute maximum ratings in the official Taiwan Semiconductor datasheet Version A2102. This rating enables reliable operation in under-hood automotive environments and industrial enclosures with limited airflow. Derating curves confirm usable current capacity down to 0 A at 150°C ambient when mounted on standard FR-4 PCBs. Thermal design must respect R_θJL = 13 °C/W to avoid exceeding this limit.

Is the S5KH suitable for high-frequency switching applications like 500 kHz SMPS?

No, the S5KH is not suitable for high-frequency switching applications such as 500 kHz SMPS due to its 1500 ns reverse recovery time (trr). This trr value indicates standard recovery behavior optimized for line-frequency and low-frequency (<100 kHz) rectification. Using the S5KH in high-frequency topologies would cause excessive switching loss, overheating, and potential failure. For 500 kHz designs, an ultrafast or Schottky rectifier with trr <100 ns - such as the MUR580 - should be selected instead.

Does the S5KH have AEC-Q101 qualification, and what does that cover?

Yes, the S5KH is explicitly AEC-Q101 qualified per the Taiwan Semiconductor datasheet Version A2102. This qualification covers stress testing including high-temperature operating life (HTOL), temperature cycling (TC), highly accelerated stress test (HAST), and mechanical shock - validating reliability for automotive electronic components. AEC-Q101 applies to discrete semiconductors, confirming the S5KH meets automotive-grade quality and lifetime expectations for under-hood and lighting applications.

What is the moisture sensitivity level (MSL) of the S5KH, and how does it affect assembly?

The S5KH has a moisture sensitivity level (MSL) of Level 1 per J-STD-020, meaning it is not sensitive to moisture-induced damage during reflow soldering. No baking or dry-pack handling is required prior to assembly. This simplifies SMT line integration, eliminates floor-life tracking, and reduces risk of popcorning or delamination - especially beneficial for high-volume automotive and industrial manufacturing where process consistency is critical.

How does the S5KH's forward voltage compare to similar 800 V rectifiers, and why does it matter?

The S5KH specifies a maximum forward voltage (V_F) of 1.15 V at 5 A and 25°C - competitive with industry-standard 800 V rectifiers like the VS-5EWH08-M3 (1.25 V) and tighter than older-generation parts (≥1.4 V). Lower V_F directly reduces conduction loss (P_loss = I_F × V_F), cutting thermal load by ~0.5 W at full current. This improves system efficiency and relaxes heatsinking requirements, particularly valuable in sealed automotive lamp housings and compact industrial power modules.

S5KH 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):: 5A

Voltage - Forward (Vf) (Max) @ If:: 1.15 V @ 5 A

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

Reverse Recovery Time (trr):: 1.5 µs

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

Capacitance @ Vr, F:: 60pF @ 4V, 1MHz

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

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

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

S5KH FAQ

1.How can I place an order for S5KH through Aetrix?

Please submit a Request for Quotation (RFQ) for S5KH 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 S5KH reliable?

The price and inventory of S5KH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S5KH is usually 5 days.

3.What payment methods are accepted for S5KH?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S5KH transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S5KH?

S5KH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S5KH 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 S5KH?

For technical support, including S5KH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S5KH requirements.

6.How does Aetrix verify that S5KH is sourced from the original manufacturer or authorized distributors?

All S5KH 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 S5KH meets industry standards.

7.What is the process for return or replacement of S5KH?

All S5KH units undergo pre-shipment inspection (PSI). If there is an issue with S5KH, 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 S5KH part is unused and in its original packaging.

Return procedure for S5KH:

1.Submit a request within 90 days.

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

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