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

Taiwan Semiconductor Corporation S5Q

Name: S5Q
Brand: Taiwan Semiconductor Corporation
SKU: S5Q
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S5Q

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-214AB, SMC

Datasheet:: S5Q.pdf

Description:: DIODE GEN PURP 1.2KV 5A DO214AB

Quantity:: RFQ Add To RFQ list

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Inventory:1,051

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Product details

Overview

S5Q from Taiwan Semiconductor is a 5A, 1200V surface-mount silicon rectifier diode in DO-214AB (SMC) package, featuring glass-passivated junction, low reverse leakage (≤10 µA at 25°C), and 150°C maximum junction temperature. It serves as a freewheeling or output rectifier in high-voltage DC/DC converters and industrial SMPS.

For engineers reviewing the S5Q datasheet, S5Q pinout, S5Q application, or S5Q equivalent, key selection criteria include repetitive peak reverse voltage (1200 V), surge current capability (120 A @ 8.3 ms), thermal resistance (R_θJL = 16 °C/W), RoHS/halogen-free compliance, and J-STD-020 Level 1 moisture sensitivity.

Technical Context

The S5Q is a single-die, unidirectional silicon power rectifier optimized for high-voltage switching applications. Its glass-passivated junction ensures stable reverse characteristics across temperature, while the DO-214AB (SMC) package supports automated placement and delivers R_θJA = 47 °C/W on standard 16 mm × 16 mm Cu pad PCBs.

Electrical behavior is defined by forward voltage of 0.98 V (max) at 5 A / 25°C and reverse current ≤150 µA at 125°C. Junction capacitance is 27 pF at 1 MHz / 4 V, supporting moderate-frequency operation without excessive switching loss.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	1200 V - Withstands repetitive reverse voltage up to 1200 V without breakdown
I_F	5 A - Continuous average forward current rating at T_A = 25°C with adequate heatsinking
I_FSM	120 A @ 8.3 ms - Peak non-repetitive surge current handling for line transients or startup
T_J(max)	+150°C - Maximum allowable junction temperature for reliable long-term operation
V_F	0.98 V (max) @ 5 A, 25°C - Forward conduction loss directly impacts efficiency in high-current paths
R_θJL	16 °C/W - Thermal resistance from junction to lead enables direct PCB copper thermal path design
I_R	≤10 µA @ 25°C - Low leakage preserves hold-up energy and reduces standby power loss

Pinout & Package

Package: DO-214AB (SMC), surface-mount, single-anode/single-cathode configuration. Cathode indicated by molded band. Matte tin-plated leads, J-STD-002 solderable.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Lead 1)	Forward current entry point	Connected to lower-potential side (e.g., switch node or ground return) in freewheeling path
Cathode (Lead 2)	Forward current exit point	Connected to higher-potential rail (e.g., output capacitor positive) - polarity critical for rectification

Key Features

Feature	Design Value
Glass-passivated junction	Ensures stable reverse leakage and long-term reliability under humidity and thermal cycling
J-STD-020 Level 1 moisture sensitivity	Enables direct placement without baking or dry-pack requirements - simplifies SMT line logistics
UL 94V-0 molding compound	Meets flame-retardancy standards for industrial and power supply safety certifications
RoHS + halogen-free (IEC 61249-2-21)	Complies with environmental regulations for global OEM shipments and end-of-life processing
JESD 201 Class 1 whisker resistance	Prevents tin whisker growth under thermal stress - critical for high-reliability power systems

Applications

Switch Mode Power Supply	Inverters and Converters
Use Scenario: Output rectification in 400–800 V DC bus AC/DC front-end supplies. IC Role / Device Role / Timing Role: High-voltage output rectifier converting transformer secondary AC to regulated DC. Use Value: 1200 V V_RRM provides 2× margin over 600 V nominal bus, reducing risk of avalanche failure during line surges.	Use Scenario: Freewheeling path in three-phase IGBT-based motor drives. IC Role / Device Role / Timing Role: Unidirectional current path clamping inductive kickback during IGBT turn-off. Use Value: 120 A I_FSM handles short-duration motor stall currents without degradation.
Industrial DC/DC Converters	Renewable Energy Interfaces
Use Scenario: Isolated auxiliary supply in programmable logic controllers (PLCs). IC Role / Device Role / Timing Role: Secondary-side rectifier delivering 24 V/5 A isolated bias power. Use Value: R_θJL = 16 °C/W allows direct thermal coupling to copper pour - eliminates need for external heatsink.	Use Scenario: String-level protection in photovoltaic combiner boxes. IC Role / Device Role / Timing Role: Blocking diode preventing reverse current flow from parallel strings. Use Value: ≤10 µA reverse leakage at 25°C minimizes parasitic power loss in low-light conditions.

Switch Mode Power Supply

Inverters and Converters

Use Scenario: Output rectification in 400–800 V DC bus AC/DC front-end supplies.

IC Role / Device Role / Timing Role: High-voltage output rectifier converting transformer secondary AC to regulated DC.

Use Value: 1200 V V_RRM provides 2× margin over 600 V nominal bus, reducing risk of avalanche failure during line surges.

Use Scenario: Freewheeling path in three-phase IGBT-based motor drives.

IC Role / Device Role / Timing Role: Unidirectional current path clamping inductive kickback during IGBT turn-off.

Use Value: 120 A I_FSM handles short-duration motor stall currents without degradation.

Industrial DC/DC Converters

Renewable Energy Interfaces

Use Scenario: Isolated auxiliary supply in programmable logic controllers (PLCs).

IC Role / Device Role / Timing Role: Secondary-side rectifier delivering 24 V/5 A isolated bias power.

Use Value: R_θJL = 16 °C/W allows direct thermal coupling to copper pour - eliminates need for external heatsink.

Use Scenario: String-level protection in photovoltaic combiner boxes.

IC Role / Device Role / Timing Role: Blocking diode preventing reverse current flow from parallel strings.

Use Value: ≤10 µA reverse leakage at 25°C minimizes parasitic power loss in low-light conditions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
STTH5L06D (STMicroelectronics)	600 V V_RRM, 5 A I_F, TO-277 package, faster recovery (t_rr = 65 ns)	Lower voltage rating limits use to ≤400 V DC bus systems	Select when fast recovery and compact footprint outweigh voltage margin needs
VS-5EWH12FN-M3 (Vishay)	1200 V V_RRM, 5 A I_F, DO-214AB, but higher V_F (1.25 V max @ 5 A)	Higher conduction loss increases thermal load in continuous 5 A operation	Choose if legacy qualification or Vishay supply chain alignment is required

Compared with STTH5L06D and VS-5EWH12FN-M3, the S5Q uniquely balances 1200 V rating, low V_F (0.98 V max), and Level 1 moisture sensitivity - making it optimal for cost-sensitive, high-volume industrial SMPS where voltage margin and assembly simplicity are prioritized.

Availability

S5Q is available at Aetrix Electronics and suitable for switch mode power supplies, inverters and converters, and industrial DC/DC converters requiring stable component supply, full traceability, and long-term production support.

Supply support for S5Q 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 S5Q belongs to TSC's high-voltage rectifier family designed specifically for ruggedized, high-efficiency power conversion in industrial-grade power supplies and motor control systems.

FAQ

What is the maximum junction temperature rating for the S5Q?

The S5Q has a maximum junction temperature (T_J) rating of +150°C, verified per absolute maximum ratings table in the official TSC datasheet (Version C2102). This allows operation in high-ambient environments such as enclosed industrial power supplies. Derating curves confirm usable current capacity down to 0 A at 150°C ambient when mounted on standard PCB test board. The S5Q must not exceed this limit to maintain reliability and warranty coverage.

Does the S5Q have a specified reverse recovery time (t_rr)?

No - the S5Q datasheet does not specify reverse recovery time (t_rr) or softness factor. It is characterized as a standard recovery rectifier, not an ultrafast or soft-recovery type. For designs requiring controlled reverse recovery (e.g., ZVS circuits), engineers should verify switching behavior empirically or select a documented fast-recovery alternative. The S5Q remains suitable for conventional hard-switched SMPS where t_rr is not a critical parameter.

Is the S5Q compliant with lead-free soldering processes?

Yes - the S5Q features matte tin-plated leads qualified per J-STD-002 for solderability, and its DO-214AB (SMC) package is rated for peak reflow temperatures up to 260°C per J-STD-020 Level 1. No pre-baking is required prior to reflow. The S5Q meets RoHS Directive 2011/65/EU and is halogen-free per IEC 61249-2-21, making it compatible with standard lead-free assembly lines.

What is the marking code printed on the S5Q device body?

The S5Q device is marked with "S5Q" as the primary part identification, per the official marking diagram in the TSC datasheet (Version C2102). Additional markings include factory code (F), green compound indicator (G), and date code (YW). No secondary alphanumeric suffix or revision letter appears on the device - the bare marking "S5Q" uniquely identifies this specific Taiwan Semiconductor rectifier variant.

Can the S5Q replace the S3Q in an existing design?

No - the S5Q (5 A, 1200 V) and S3Q (3 A, 1000 V) differ in both current rating and voltage rating. Substituting S5Q for S3Q may cause overdesign in thermal layout and increased forward conduction loss due to higher I_F derating. Conversely, replacing S5Q with S3Q risks thermal runaway or avalanche failure under 5 A load or 1200 V transient. The S5Q must be validated independently in any new or revised design - no drop-in replacement claim is supported by TSC documentation.

S5Q 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):: 1200 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):: -

Current - Reverse Leakage @ Vr:: 10 µA @ 1200 V

Capacitance @ Vr, F:: 27pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

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

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

S5Q FAQ

1.How can I place an order for S5Q through Aetrix?

Please submit a Request for Quotation (RFQ) for S5Q 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 S5Q reliable?

The price and inventory of S5Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S5Q is usually 5 days.

3.What payment methods are accepted for S5Q?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S5Q transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S5Q?

S5Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S5Q 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 S5Q?

For technical support, including S5Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S5Q requirements.

6.How does Aetrix verify that S5Q is sourced from the original manufacturer or authorized distributors?

All S5Q 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 S5Q meets industry standards.

7.What is the process for return or replacement of S5Q?

All S5Q units undergo pre-shipment inspection (PSI). If there is an issue with S5Q, 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 S5Q part is unused and in its original packaging.

Return procedure for S5Q:

1.Submit a request within 90 days.

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

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