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

Taiwan Semiconductor Corporation S1KL

Name: S1KL
Brand: Taiwan Semiconductor Corporation
SKU: S1KL
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: S1KL

Manufacturer:: Taiwan Semiconductor Corporation

Category:: Single Diodes

Package:: DO-219AB

Datasheet:: S1KL.pdf

Description:: DIODE GEN PURP 800V 1A SUB SMA

Quantity:: RFQ Add To RFQ list

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Inventory:18,755

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Product details

Overview

S1KL from Taiwan Semiconductor is a 1A, 800V repetitive peak reverse voltage (V_RRM) standard surface-mount silicon rectifier diode in Sub SMA package, featuring glass-passivated junction, 30A peak forward surge current (I_FSM), and 175°C maximum junction temperature - used in DC-DC converters and switching-mode inverters.

For engineers reviewing the S1KL datasheet, S1KL pinout, S1KL application, or S1KL equivalent, key selection factors include its 800V V_RRM, 1.1V max forward voltage at 1A, 5µA max reverse leakage at 25°C, 1800ns reverse recovery time, and Sub SMA thermal performance with R_θJL = 30°C/W.

Technical Context

The S1KL is a single-die, unidirectional standard recovery rectifier optimized for general-purpose and medium-frequency switching applications up to ~10 kHz. Its 1800ns reverse recovery time and 9pF junction capacitance reflect trade-offs between switching loss and conduction efficiency.

Thermally, it uses a Sub SMA package with matte tin-plated leads compliant with J-STD-002, rated for 175°C junction operation and moisture sensitivity level 1 per J-STD-020. Thermal resistance from junction-to-lead is 30°C/W for S1KL–S1ML variants.

Key Specifications

Parameter	Value and Actual Design Meaning
V_RRM	800 V - Maximum non-repetitive reverse voltage the device blocks reliably in circuit
I_F	1 A continuous - Average forward current rating at TA = 75°C with adequate PCB copper area
I_FSM	30 A - Peak surge current capability for 8.3ms half-sine, critical for input rectification inrush handling
V_F (max)	1.1 V @ 1A, 25°C - Directly impacts conduction loss and thermal rise in power stage design
I_R (max)	5 µA @ 800V, 25°C - Low leakage supports stable DC bus hold-up and reduces standby power loss
t_rr	1800 ns - Defines minimum off-time in hard-switched topologies; limits usable frequency range
T_J(max)	175°C - Enables high-temperature operation in enclosed or thermally constrained environments

Pinout & Package

Sub SMA package: surface-mount, single-anode/single-cathode configuration with cathode indicated by molded band; lead finish is matte tin, compliant with J-STD-002 solderability.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward current entry point	Connected to AC input or lower-potential node; must handle full 1A RMS and surge currents
Cathode	Forward current exit point	Marked by band; connects to DC output/bus; carries same current as anode with polarity-dependent voltage drop

Key Features

Feature	Design Value
Glass-passivated junction	Enhances long-term reliability under humidity and thermal cycling vs. epoxy-passivated alternatives
Sub SMA low-profile package	0.019g weight and compact footprint support high-density PCB layouts in space-constrained converters
J-STD-020 Level 1 moisture sensitivity	Enables direct placement without baking; eliminates pre-reflow dry storage requirements
UL 94V-0 molding compound	Meets flammability safety standards for industrial and consumer end-equipment certifications
RoHS & halogen-free compliance	Supports environmental compliance for global market access per IEC 61249-2-21 and EU directives

Applications

AC-DC Front-End Rectification	DC-DC Converter Input Stage
Use Scenario: Single-phase bridge or half-wave rectification feeding bulk capacitor in offline SMPS. IC Role / Device Role / Timing Role: Standard recovery rectifier providing unidirectional current path with 800V blocking capability. Use Value: Low 1.1V V_F minimizes conduction loss at 1A; 30A I_FSM withstands line surge transients.	Use Scenario: Input rectification in isolated flyback or forward converters operating from 24–48V DC sources. IC Role / Device Role / Timing Role: Primary-side freewheeling or clamp rectifier handling pulsed forward current. Use Value: 1800ns t_rr compatible with ≤100kHz switching; Sub SMA enables automated assembly on dense control boards.
Switching Inverter Output Stage	Industrial Power Supply Hold-Up
Use Scenario: Freewheeling path in H-bridge motor drive inverters or UPS output stages. IC Role / Device Role / Timing Role: Unidirectional current steering during inductive energy recirculation. Use Value: 175°C T_J(max) sustains operation under high ambient temperatures common in enclosed drives.	Use Scenario: Secondary-side rectification in telecom or server PSUs requiring >10ms hold-up time. IC Role / Device Role / Timing Role: Main output rectifier delivering regulated 12V/48V with low leakage and stable V_F. Use Value: 5µA max I_R at 25°C preserves capacitor charge; glass passivation ensures long-term parameter stability.

AC-DC Front-End Rectification

DC-DC Converter Input Stage

Use Scenario: Single-phase bridge or half-wave rectification feeding bulk capacitor in offline SMPS.

IC Role / Device Role / Timing Role: Standard recovery rectifier providing unidirectional current path with 800V blocking capability.

Use Value: Low 1.1V V_F minimizes conduction loss at 1A; 30A I_FSM withstands line surge transients.

Use Scenario: Input rectification in isolated flyback or forward converters operating from 24–48V DC sources.

IC Role / Device Role / Timing Role: Primary-side freewheeling or clamp rectifier handling pulsed forward current.

Use Value: 1800ns t_rr compatible with ≤100kHz switching; Sub SMA enables automated assembly on dense control boards.

Switching Inverter Output Stage

Industrial Power Supply Hold-Up

Use Scenario: Freewheeling path in H-bridge motor drive inverters or UPS output stages.

IC Role / Device Role / Timing Role: Unidirectional current steering during inductive energy recirculation.

Use Value: 175°C T_J(max) sustains operation under high ambient temperatures common in enclosed drives.

Use Scenario: Secondary-side rectification in telecom or server PSUs requiring >10ms hold-up time.

IC Role / Device Role / Timing Role: Main output rectifier delivering regulated 12V/48V with low leakage and stable V_F.

Use Value: 5µA max I_R at 25°C preserves capacitor charge; glass passivation ensures long-term parameter stability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ON Semiconductor MUR180	800V V_RRM, 1A I_F, but ultrafast (t_rr = 75ns); higher V_F (1.3V typ)	Better suited for higher-frequency (>50kHz) switching where recovery loss dominates	Select MUR180 only if t_rr reduction justifies higher conduction loss and cost premium
Vishay ES1J	600V V_RRM, same 1A I_F, 35ns t_rr, Sub SMA package	Limited to ≤600V systems; unsuitable for 800V-rated input designs	Use ES1J only when system V_RMS ≤420V and faster recovery is required

Compared with MUR180 and ES1J, the S1KL provides optimal balance of 800V blocking, low-cost standard recovery performance, and robust thermal rating - making it preferred for cost-sensitive, medium-frequency industrial and converter applications where ultrafast recovery is unnecessary.

Availability

S1KL is available at Aetrix Electronics and suitable for DC-DC converters, switching-mode inverters, and general-purpose power supply designs requiring stable component supply, long-lifecycle availability, and RoHS-compliant sourcing.

Supply support for S1KL 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 S1KL belongs to TSC's S1xL series of standard recovery rectifiers, designed specifically for cost-effective, reliable AC/DC and DC/DC power conversion in commercial and industrial equipment.

FAQ

What is the maximum repetitive peak reverse voltage (V_RRM) rating for the S1KL?

The S1KL has a maximum repetitive peak reverse voltage (V_RRM) rating of 800 V, as confirmed in the Absolute Maximum Ratings table across all official Taiwan Semiconductor documentation versions (Q2108). This defines the highest reverse voltage the S1KL can block continuously without breakdown under specified thermal conditions.

Does the S1KL have a specified reverse recovery time (t_rr) and what is its value?

Yes, the S1KL has a specified reverse recovery time (t_rr) of 1800 ns under test conditions of I_F = 0.5 A, I_R = 1.0 A, and I_rr = 0.25 A. This value is published in the Electrical Specifications section of the Taiwan Semiconductor S1xL datasheet (Version Q2108) and reflects its standard recovery behavior.

What package type is used for the S1KL and is it compatible with automated assembly processes?

The S1KL uses the Sub SMA surface-mount package, explicitly stated in the Ordering Information and Mechanical Data sections. It is designed for automated placement, with moisture sensitivity level 1 per J-STD-020 and matte tin-plated leads compliant with J-STD-002 - confirming full compatibility with standard SMT reflow processes without pre-baking.

What is the maximum forward voltage (V_F) of the S1KL at its rated current?

The maximum forward voltage (V_F) of the S1KL is 1.1 V at I_F = 1 A and T_J = 25°C, as specified in the Electrical Specifications table. This value represents the worst-case conduction drop under nominal conditions and is critical for calculating power dissipation and thermal design margins for the S1KL.

Is the S1KL RoHS compliant and halogen-free?

Yes, the S1KL is RoHS compliant and halogen-free in accordance with IEC 61249-2-21, as explicitly stated in the FEATURES section of the Taiwan Semiconductor S1xL datasheet (Version Q2108). The Sub SMA molding compound also meets UL 94V-0 flammability requirements.

S1KL Specifications

Product attributes: Attribute value

Manufacturer:: Taiwan Semiconductor Corporation

Series:: -

Package/Case:: DO-219AB

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Technology:: Standard

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

Current - Average Rectified (Io):: 1A

Voltage - Forward (Vf) (Max) @ If:: 1.1 V @ 1 A

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

Reverse Recovery Time (trr):: 1.8 µs

Current - Reverse Leakage @ Vr:: 5 µA @ 800 V

Capacitance @ Vr, F:: 9pF @ 4V, 1MHz

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: Sub SMA

Operating Temperature - Junction:: -55°C ~ 175°C

S1KL FAQ

1.How can I place an order for S1KL through Aetrix?

Please submit a Request for Quotation (RFQ) for S1KL 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 S1KL reliable?

The price and inventory of S1KL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1KL is usually 5 days.

3.What payment methods are accepted for S1KL?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1KL transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for S1KL?

S1KL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your S1KL 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 S1KL?

For technical support, including S1KL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1KL requirements.

6.How does Aetrix verify that S1KL is sourced from the original manufacturer or authorized distributors?

All S1KL 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 S1KL meets industry standards.

7.What is the process for return or replacement of S1KL?

All S1KL units undergo pre-shipment inspection (PSI). If there is an issue with S1KL, 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 S1KL part is unused and in its original packaging.

Return procedure for S1KL:

1.Submit a request within 90 days.

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

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