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Taiwan Semiconductor Corporation S1KLH
- Part No.:
- S1KLH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123
- Datasheet:
-
S1KLH.pdf
- Description:
- 1A, 800V, STANDARD RECOVERY RECT
- Quantity:
- Payment:
- Shipping:
Inventory:3,173
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Product details
Overview
S1KLH from Taiwan Semiconductor is a 1A, 800V repetitive peak reverse voltage (VRRM) standard surface-mount silicon rectifier diode in Sub SMA package, featuring glass passivated junction, 30A peak forward surge current (IFSM), and AEC-Q101 qualification for automotive use.
For engineers reviewing the S1KLH datasheet, S1KLH pinout, S1KLH application, or S1KLH equivalent, key selection criteria include VRRM=800V, VF≤1.1V at 1A, IR≤5µA at 25°C, trr=1800ns, and thermal resistance RθJL=30°C/W - critical for DC-DC converters, snubber networks, and automotive lighting systems.
Technical Context
The S1KLH is a single-die, unidirectional standard recovery rectifier with cathode-band polarity marking. Its 800V VRRM rating targets medium-voltage industrial and automotive power conversion where fast switching is not required but robust surge handling and thermal reliability are essential.
Designed for surface-mount assembly, it uses matte tin-plated leads compliant with J-STD-002 and meets JESD201 Class 2 whisker resistance. The Sub SMA package supports moisture sensitivity level 1 per J-STD-020 and UL 94V-0 molding compound.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - maximum non-repetitive reverse voltage the device blocks without breakdown |
| IF | 1 A - continuous average forward current at TA=25°C with adequate heatsinking |
| IFSM | 30 A - peak surge current capability for 8.3ms half-sine wave, enabling robust transient handling |
| VF | ≤1.1 V @ 1A, 25°C - forward voltage drop defining conduction loss in power stage design |
| IR | ≤5 µA @ 800V, 25°C - reverse leakage current affecting standby power and snubber stability |
| trr | 1800 ns - reverse recovery time influencing switching losses in moderate-frequency rectification |
| RθJL | 30 °C/W - junction-to-lead thermal resistance specific to S1KLH–S1MLH variants, guiding PCB copper pad sizing |
Pinout & Package
Package: Sub SMA - low-profile, surface-mount plastic package with cathode band marking; dimensions per Taiwan Semiconductor outline drawing; lead finish: matte tin, J-STD-002 solderable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry terminal | Connected to lower-potential side of AC input or switch node in flyback/flywheel configurations |
| Cathode | Forward current exit terminal | Marked by band; ties to output rail or energy storage capacitor positive in DC-DC outputs |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualified | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD per stress test requirements |
| Glass passivated junction | Enhances long-term stability and humidity resistance versus epoxy-passivated alternatives |
| Moisture sensitivity level 1 | Enables direct placement without baking, reducing manufacturing overhead and floor-life constraints |
| UL 94V-0 molding compound | Meets flammability safety requirement for enclosed automotive and industrial power modules |
| Junction temperature range –55°C to +175°C | Supports operation in under-hood environments and high-ambient industrial enclosures |
Applications
| Automotive Lighting | DC-DC Converter Output Rectification |
|---|---|
Use Scenario: LED headlamp and daytime running light (DRL) power supplies operating in engine bay environments. IC Role / Device Role / Timing Role: Output rectifier in isolated flyback or buck-derived topologies delivering regulated 12V/24V to LED drivers. Use Value: 175°C max junction temperature and AEC-Q101 qualification ensure sustained operation amid thermal cycling and vibration. | Use Scenario: Secondary-side rectification in 12V–48V industrial DC-DC modules for PLCs and motor drives. IC Role / Device Role / Timing Role: Unidirectional current path converting transformer secondary AC to DC output with minimal conduction loss. Use Value: VF ≤1.1V at 1A reduces power dissipation vs. higher-VF alternatives, easing thermal management on compact PCBs. |
| Snubber Network Protection | General-Purpose AC/DC Adapter Rectification |
Use Scenario: RC snubber across MOSFET/IGBT switches in inverters and SMPS to suppress voltage spikes. IC Role / Device Role / Timing Role: Clamping diode conducting transient energy during switch turn-off, limiting dv/dt stress. Use Value: 800V VRRM and 30A IFSM withstand repetitive clamping events without degradation in high-energy systems. | Use Scenario: Input bridge or output rectifier in cost-sensitive wall adapters and auxiliary power supplies. IC Role / Device Role / Timing Role: Standard recovery rectifier providing reliable, low-cost unidirectional conduction. Use Value: Sub SMA footprint enables automated placement and compatibility with legacy SMA layouts, lowering NRE and tooling costs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH1R08 | VRRM=800V, IF=1A, VF=1.15V typ @ 1A, trr=250ns - faster recovery but higher VF and no AEC-Q101 | Preferred in higher-frequency SMPS where trr matters more than automotive qualification | Select when faster switching outweighs automotive compliance and thermal robustness |
| ES1J | VRRM=600V, IF=1A, VF=1.7V max @ 1A, trr=35ns - lower voltage rating, higher VF, ultrafast recovery | Suitable for 24V–48V systems with strict EMI limits requiring sub-50ns trr | Choose only if system VR never exceeds 600V and ultrafast recovery is mandatory |
Compared with STTH1R08 and ES1J, the S1KLH trades speed for ruggedness: its 1800ns trr is acceptable in <100kHz designs, while its AEC-Q101 status, 175°C TJ, and 30°C/W RθJL make it uniquely suited for thermally demanding automotive and industrial rectification where reliability trumps raw speed.
Availability
S1KLH is available at Aetrix Electronics and suitable for automotive lighting, DC-DC converter output rectification, and snubber network protection requiring stable component supply across production lifecycles.
Supply support for S1KLH 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, and MOSFETs.
The S1KLH belongs to TSC's S1xLH standard rectifier family, engineered for cost-effective, high-reliability surface-mount rectification in automotive, industrial, and consumer power supplies where AEC-Q101 compliance and thermal resilience are prioritized.
FAQ
What is the maximum repetitive peak reverse voltage (VRRM) for the S1KLH?
The S1KLH has a VRRM of 800 V, as confirmed in the Absolute Maximum Ratings table for the S1KLH variant in the Taiwan Semiconductor datasheet (Version B2108). This rating defines the highest reverse voltage the diode can block repeatedly without avalanche breakdown under specified conditions.
Is the S1KLH qualified for automotive applications?
Yes, the S1KLH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and mechanical shock - confirming suitability for under-hood and lighting systems where the S1KLH is deployed.
What is the forward voltage drop (VF) of the S1KLH at rated current?
The S1KLH exhibits a maximum forward voltage of 1.1 V at 1 A forward current and 25°C junction temperature, per the Electrical Specifications table. This value directly determines conduction loss in power stage calculations and is measured under pulsed conditions (PW = 0.3 ms).
Does the S1KLH have a defined reverse recovery time (trr)?
Yes, the S1KLH has a typical reverse recovery time of 1800 ns, measured at IF = 0.5 A, IR = 1.0 A, and Irr = 0.25 A. This parameter is specified in the Electrical Specifications section and reflects its standard recovery behavior, appropriate for line-frequency and low-to-moderate switching frequency applications.
What package type does the S1KLH use, and what are its key mechanical attributes?
The S1KLH uses the Sub SMA package - a low-profile surface-mount variant of SMA with standardized dimensions, matte tin-plated leads compliant with J-STD-002, and UL 94V-0 flammability-rated molding compound. Its polarity is marked by a visible cathode band, and it carries moisture sensitivity level 1 per J-STD-020.
S1KLH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123
- 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:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- Sub SMA
- Operating Temperature - Junction:
- -55°C ~ 175°C
S1KLH FAQ
1.How can I place an order for S1KLH through Aetrix?
Please submit a Request for Quotation (RFQ) for S1KLH 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 S1KLH reliable?
The price and inventory of S1KLH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1KLH is usually 5 days.
3.What payment methods are accepted for S1KLH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1KLH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1KLH?
S1KLH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1KLH 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 S1KLH?
For technical support, including S1KLH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1KLH requirements.
6.How does Aetrix verify that S1KLH is sourced from the original manufacturer or authorized distributors?
All S1KLH 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 S1KLH meets industry standards.
7.What is the process for return or replacement of S1KLH?
All S1KLH units undergo pre-shipment inspection (PSI). If there is an issue with S1KLH, 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 S1KLH part is unused and in its original packaging.
Return procedure for S1KLH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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