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Taiwan Semiconductor Corporation S1KLSH
- Part No.:
- S1KLSH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123H
- Datasheet:
-
S1KLSH.pdf
- Description:
- 1.2A, 800V, STANDARD RECOVERY RE
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
S1KLSH from Taiwan Semiconductor is a 1.2A, 800V repetitive peak reverse voltage (VRRM) standard surface-mount silicon rectifier diode in SOD-123HE package, featuring 50A IFSM surge capability, 1.3V max forward voltage at 1.2A, and AEC-Q101 qualification for automotive-grade reliability - used in DC-DC converter snubber networks and car lighting power stages.
For engineers reviewing the S1KLSH datasheet, S1KLSH pinout, S1KLSH application, or S1KLSH equivalent, key selection criteria include VRRM = 800V, IF = 1.2A, thermal resistance RθJA = 86°C/W on 5mm × 5mm Cu pad, moisture sensitivity level 1, and JESD201 Class 2 whisker resistance - all critical for high-reliability automotive and industrial power conversion designs.
Technical Context
The S1KLSH is a single-die, unidirectional standard recovery rectifier optimized for medium-voltage, medium-current switching applications. It operates with a maximum junction temperature of 175°C and exhibits low forward conduction loss (VF ≤ 1.3V @ 1.2A) while sustaining 800V reverse blocking capability and 50A non-repetitive surge current under 8.3ms half-sine conditions.
Its SOD-123HE package provides compact footprint and robust thermal performance (RθJL = 46°C/W), with matte tin-plated leads compliant to J-STD-002 solderability and polarity indicated by cathode band. The device meets RoHS and halogen-free requirements per IEC 61249-2-21.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - supports DC-DC converter primary-side clamping and snubber circuits up to 800V reverse stress |
| IF | 1.2 A continuous - rated for steady-state output rectification in compact automotive LED drivers |
| IFSM | 50 A (8.3 ms) - withstands transient surges during load dump or inductive switching events |
| VF max | 1.3 V @ 1.2 A, 25°C - limits conduction loss to ≤1.56 W, enabling thermally constrained PCB layouts |
| TJ max | 175°C - enables operation in under-hood automotive environments without derating below 125°C ambient |
| RθJA | 86°C/W on 5 mm × 5 mm Cu pad - defines thermal design margin for natural-convection cooling in space-limited modules |
Pinout & Package
Package: SOD-123HE - surface-mount plastic case with cathode band marking, 0.022 g weight, UL 94V-0 molding compound, and JESD201 Class 2 whisker-resistant matte tin plating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit (e.g., ground return or switch node) |
| Cathode | Forward current exit / reverse blocking terminal | Marked by band; connects to higher-potential rail (e.g., input bus or transformer secondary) |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive electronics use including engine control, lighting, and body modules |
| Moisture sensitivity level 1 | Enables direct placement without baking, reducing manufacturing overhead and floor-life risk |
| High IFSM/IF ratio (42:1) | Provides robustness against short-duration overloads without requiring oversized devices |
| Halogen-free construction | Complies with IEC 61249-2-21, supporting eco-design and end-of-life recycling requirements |
Applications
| Automotive LED Headlamp Driver | Industrial DC-DC Snubber Circuit |
|---|---|
Use Scenario: Rectifying flyback transformer output in constant-current LED driver for adaptive front lighting systems. IC Role / Device Role / Timing Role: Output rectifier handling 1.2A average current and absorbing 800V reflected spikes during MOSFET turn-off. Use Value: Low VF minimizes heat generation in sealed headlamp housings; AEC-Q101 ensures 15-year field reliability. | Use Scenario: Clamping voltage overshoot across power switches in isolated 48V-to-12V telecom DC-DC converters. IC Role / Device Role / Timing Role: Passive snubber diode conducting only during transient voltage excursions above 800V. Use Value: 50A IFSM safely absorbs energy from leakage inductance without failure under repeated fault conditions. |
| Car Interior Lighting Power Supply | General-Purpose AC/DC Adapter Output Stage |
Use Scenario: Secondary-side rectification in compact 12V/1A isolated flyback supply powering dashboard backlighting and infotainment USB ports. IC Role / Device Role / Timing Role: Main output rectifier operating continuously at 1.2A with minimal conduction loss. Use Value: SOD-123HE footprint saves board area vs. SMA/SMB; RθJA = 86°C/W allows thermal management without heatsinks. | Use Scenario: Output rectification in cost-sensitive wall adapters for consumer electronics with universal AC input. IC Role / Device Role / Timing Role: General-purpose standard recovery diode replacing legacy DO-214AC parts where size and reliability are prioritized. Use Value: Halogen-free and RoHS-compliant construction meets global regulatory requirements without performance trade-offs. |
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 MUR120SFT1G | VRRM = 200V, IF = 1A, faster recovery (trr ≈ 75ns), TO-277 package | Better suited for high-frequency switching supplies; insufficient for 800V snubbers | Select when EMI reduction and <200V reverse stress dominate over surge robustness |
| Vishay VS-1N4937-M3/54 | VRRM = 1000V, IF = 1A, DO-41 through-hole, no AEC-Q101 | Higher voltage rating but lower current and no automotive qualification; requires PCB hole drilling | Choose for legacy through-hole designs or non-automotive 1000V applications where leaded assembly remains mandatory |
Compared with MUR120SFT1G and VS-1N4937-M3/54, the S1KLSH uniquely balances 800V blocking, 1.2A current, AEC-Q101 compliance, and SOD-123HE surface-mount compatibility - making it optimal for next-generation automotive power modules where space, reliability, and surge immunity are jointly constrained.
Availability
S1KLSH is available at Aetrix Electronics and suitable for automotive LED drivers, industrial DC-DC snubbers, and general-purpose AC/DC adapter output stages requiring stable component supply, long-term lifecycle support, and AEC-Q101 traceability.
Supply support for S1KLSH 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 rectifiers, TVS diodes, MOSFETs, and bipolar transistors.
The S1KLSH belongs to TSC's AEC-Q101-qualified S1xLSH standard rectifier family, engineered specifically for automotive and industrial power conversion applications demanding high surge tolerance, compact packaging, and extended temperature operation.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) of the S1KLSH?
The S1KLSH has a maximum repetitive peak reverse voltage (VRRM) of 800 V, as specified in the Absolute Maximum Ratings table. This value is fixed for the S1KLSH variant and distinguishes it from other members of the S1xLSH family (e.g., S1DLSH = 200 V, S1MLSH = 1000 V). The 800 V rating enables use in 400–600 V DC bus applications with sufficient safety margin.
Is the S1KLSH suitable for automotive applications?
Yes, the S1KLSH is AEC-Q101 qualified and explicitly listed for automotive applications in its official documentation. Its construction - including JESD201 Class 2 whisker resistance, moisture sensitivity level 1, and operation up to 175°C junction temperature - satisfies stringent automotive reliability requirements for use in LED lighting, body control modules, and powertrain auxiliary systems.
What is the forward voltage (VF) specification for the S1KLSH at rated current?
The S1KLSH has a maximum forward voltage (VF) of 1.3 V at IF = 1.2 A and TJ = 25°C, per the Electrical Specifications table. This value is measured under pulsed conditions (PW = 0.3 ms) and represents worst-case conduction loss, directly impacting thermal design and efficiency in high-duty-cycle applications like LED drivers.
Does the S1KLSH have a defined thermal resistance to ambient (RθJA)?
Yes, the S1KLSH has a typical junction-to-ambient thermal resistance (RθJA) of 86°C/W when mounted on a standard 5 mm × 5 mm copper pad test board. This value is critical for estimating temperature rise under real-world PCB layouts and must be used with actual power dissipation (P = IF × VF) to verify safe junction temperature margins.
What package type does the S1KLSH use, and how is polarity identified?
The S1KLSH uses the SOD-123HE surface-mount package. Polarity is identified by a visible cathode band on the device body, consistent with industry-standard diode marking. The package features matte tin-plated leads compliant to J-STD-002 and is rated for moisture sensitivity level 1, eliminating bake requirements prior to reflow.
S1KLSH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123H
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 1.2A
- Voltage - Forward (Vf) (Max) @ If:
- 1.3 V @ 1.2 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 5 µA @ 800 V
- Capacitance @ Vr, F:
- -
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123HE
- Operating Temperature - Junction:
- -55°C ~ 175°C
S1KLSH FAQ
1.How can I place an order for S1KLSH through Aetrix?
Please submit a Request for Quotation (RFQ) for S1KLSH 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 S1KLSH reliable?
The price and inventory of S1KLSH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1KLSH is usually 5 days.
3.What payment methods are accepted for S1KLSH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1KLSH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1KLSH?
S1KLSH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1KLSH 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 S1KLSH?
For technical support, including S1KLSH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1KLSH requirements.
6.How does Aetrix verify that S1KLSH is sourced from the original manufacturer or authorized distributors?
All S1KLSH 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 S1KLSH meets industry standards.
7.What is the process for return or replacement of S1KLSH?
All S1KLSH units undergo pre-shipment inspection (PSI). If there is an issue with S1KLSH, 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 S1KLSH part is unused and in its original packaging.
Return procedure for S1KLSH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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