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Taiwan Semiconductor Corporation SKLWH
- Part No.:
- SKLWH
- Manufacturer:
- Taiwan Semiconductor Corporation
- Category:
- Single Diodes
- Package:
- SOD-123W
- Datasheet:
-
SKLWH.pdf
- Description:
- 0.8A, 800V, STANDARD RECOVERY RE
- Quantity:
- Payment:
- Shipping:
Inventory:20,000
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Product details
Overview
SKLWH from Taiwan Semiconductor is a 800V repetitive peak reverse voltage, 0.8A average forward current standard surface-mount rectifier in SOD-123W package, glass passivated, AEC-Q101 qualified, and used in automotive lighting and DC-DC snubber circuits.
For engineers reviewing the SKLWH datasheet, SKLWH pinout, SKLWH application, or SKLWH equivalent, key selection factors include its 800V VRRM, 20A IFSM, 150°C TJMAX, moisture sensitivity level 1 compliance, and SOD-123W thermal performance (RθJA = 84°C/W).
Technical Context
The SKLWH is a single-die, silicon planar junction standard rectifier with glass passivation for enhanced reliability under high-voltage transients. Its 800V VRRM and 1.10V max VF at 0.8A/25°C support efficient power conversion in constrained automotive environments.
Thermal design is enabled by RθJL = 30°C/W and RθJC = 31°C/W on a 5mm × 5mm Cu pad; polarity is marked by cathode band, and terminals are matte tin-plated per J-STD-002 solderability standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VRRM | 800 V - Maximum repetitive reverse blocking voltage; defines safe operating range in snubber and flyback clamp circuits |
| IF | 0.8 A - Continuous average forward current; sets steady-state power handling capability on standard PCB layout |
| IFSM | 20 A - Non-repetitive surge current (8.3 ms half-sine); supports inrush and transient overload tolerance |
| TJMAX | 150 °C - Maximum junction temperature; enables operation in under-hood automotive environments |
| VF @ 0.8A, 25°C | ≤1.10 V - Forward voltage drop; directly impacts conduction loss and thermal rise in DC-DC stages |
| RθJA | 84 °C/W - Junction-to-ambient thermal resistance on 5 mm × 5 mm Cu pad; informs heatsinking requirements |
Pinout & Package
SOD-123W surface-mount package: molded UL 94V-0 compound, matte tin-plated leads, cathode band polarity indicator, 0.016 g weight.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current entry point | Connected to lower-potential side of circuit; requires trace width sufficient for 0.8A continuous current |
| Cathode | Forward current exit / reverse voltage reference | Marked by band; ties to higher-potential node or switching node in snubber/clamp applications |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q101 qualification | Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD robustness |
| Glass passivated junction | Prevents moisture ingress and surface leakage degradation under high-humidity or condensing conditions |
| Moisture sensitivity level 1 | Zero bake requirement before reflow; compatible with standard SMT assembly without dry-pack handling |
| Halogen-free construction | Complies with IEC 61249-2-21; meets automotive OEM environmental material declarations |
Applications
| Automotive LED Headlamp Driver | DC-DC Flyback Snubber |
|---|---|
Use Scenario: High-brightness LED headlamps requiring compact, thermally stable rectification in constant-current driver secondary side. IC Role / Device Role / Timing Role: Output rectifier in isolated flyback converter; handles 0.8A average output current at 800V reverse stress. Use Value: AEC-Q101 qualification and 150°C TJMAX ensure long-term reliability in under-hood thermal environments. | Use Scenario: Voltage clamping network across primary-side MOSFET in automotive DC-DC converters. IC Role / Device Role / Timing Role: Snubber diode absorbing turn-off energy spikes; rated for 20A IFSM to withstand repetitive surges. Use Value: 800V VRRM and low CJ (7 pF) minimize capacitive loading while maintaining fast recovery in high-frequency switching. |
| On-Board Charger (OBC) Auxiliary Supply | Industrial 24V Input AC-DC Adapter |
Use Scenario: Auxiliary bias supply rectification in EV on-board chargers where space and thermal margin are constrained. IC Role / Device Role / Timing Role: Secondary-side rectifier in auxiliary flyback or forward converter powering gate drivers and controllers. Use Value: SOD-123W footprint enables high-density layout; RθJA = 84°C/W allows operation without additional heatsinking at 0.8A load. | Use Scenario: General-purpose industrial AC-DC adapter output stage delivering regulated 24V at ≤0.8A. IC Role / Device Role / Timing Role: Standard rectifier in low-cost, high-volume linear or switching power supplies. Use Value: RoHS and halogen-free compliance meet global industrial safety and environmental directives; level-1 MSL simplifies manufacturing logistics. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar standard rectifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STTH0.8L08S | Same 800V VRRM, 0.8A IF, but TO-277A package (larger footprint, higher RθJA ≈ 110°C/W) | Less suitable for ultra-compact automotive modules due to larger outline and thermal limitations | Choose STTH0.8L08S only if board space permits and higher thermal resistance is acceptable |
| ES1J | 800V VRRM, 1A IF, but not AEC-Q101 qualified; SOD-123 package (smaller than SOD-123W, lower power dissipation margin) | Not recommended for automotive use; limited to commercial-grade industrial adapters | Select ES1J only for cost-sensitive non-automotive applications where AEC-Q101 is not required |
Compared with STTH0.8L08S and ES1J, the SKLWH uniquely combines AEC-Q101 qualification, SOD-123W's optimized thermal performance (RθJA = 84°C/W), and level-1 MSL - making it the only choice for space-constrained, thermally demanding automotive rectification where reliability and manufacturability are co-prioritized.
Availability
SKLWH is available at Aetrix Electronics and suitable for automotive LED lighting, DC-DC snubber networks, and on-board charger auxiliary supplies requiring stable component supply and full AEC-Q101 traceability.
Supply support for SKLWH 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 automotive, industrial, and consumer markets since 1979.
The SDLWH–SMLWH series was designed specifically for high-reliability surface-mount rectification in automotive power systems, emphasizing AEC-Q101 compliance, thermal robustness, and SMT process compatibility - with SKLWH targeting 800V-class applications.
FAQ
What is the maximum repetitive peak reverse voltage rating for SKLWH?
The SKLWH has a maximum repetitive peak reverse voltage (VRRM) rating of 800 V, as confirmed in the Absolute Maximum Ratings table of the official Taiwan Semiconductor datasheet (Version A2103). This value defines the highest reverse voltage the device can block continuously without breakdown and is critical for selecting appropriate snubber or output rectifier ratings in flyback and forward converters.
Is SKLWH qualified for automotive applications?
Yes, SKLWH is explicitly AEC-Q101 qualified per the manufacturer's documentation. This qualification covers stress tests including high-temperature reverse bias, temperature cycling, and unbiased highly accelerated stress testing - confirming suitability for automotive subsystems such as LED lighting drivers and on-board charger auxiliary supplies where reliability under thermal and mechanical stress is mandatory.
What is the forward voltage drop of SKLWH at 0.8A and 25°C?
The SKLWH exhibits a maximum forward voltage drop (VF) of 1.10 V at 0.8 A forward current and 25°C junction temperature, per the Electrical Specifications table. This value directly determines conduction losses in power stages; typical VF is 0.94 V under the same conditions, supporting thermal design margin calculations for PCB copper area and ambient temperature limits.
Which package does SKLWH use, and what are its key mechanical attributes?
SKLWH uses the SOD-123W surface-mount package: UL 94V-0 compliant molding compound, matte tin-plated leads meeting J-STD-002 solderability, cathode band polarity marking, and 0.016 g mass. Its dimensions and suggested pad layout are specified in the Package Outline Dimensions section, enabling precise stencil and placement setup for automated assembly lines.
Does SKLWH have moisture sensitivity level (MSL) certification, and what does it mean for manufacturing?
Yes, SKLWH is rated MSL Level 1 per J-STD-020, meaning it has unlimited floor life at ≤30°C/60% RH and requires no baking prior to reflow soldering. This eliminates dry-pack handling, moisture barrier bags, and pre-reflow bake cycles - reducing manufacturing cost and risk of popcorn failure during SMT processing, especially in high-volume automotive electronics production.
SKLWH Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Taiwan Semiconductor Corporation
- Series:
- -
- Package/Case:
- SOD-123W
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 800 V
- Current - Average Rectified (Io):
- 800mA
- Voltage - Forward (Vf) (Max) @ If:
- 1.1 V @ 800 mA
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- -
- Current - Reverse Leakage @ Vr:
- 1 µA @ 800 V
- Capacitance @ Vr, F:
- 7pF @ 4V, 1MHz
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-123W
- Operating Temperature - Junction:
- -55°C ~ 150°C
SKLWH FAQ
1.How can I place an order for SKLWH through Aetrix?
Please submit a Request for Quotation (RFQ) for SKLWH 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 SKLWH reliable?
The price and inventory of SKLWH are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SKLWH is usually 5 days.
3.What payment methods are accepted for SKLWH?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SKLWH transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SKLWH?
SKLWH orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SKLWH 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 SKLWH?
For technical support, including SKLWH datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SKLWH requirements.
6.How does Aetrix verify that SKLWH is sourced from the original manufacturer or authorized distributors?
All SKLWH 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 SKLWH meets industry standards.
7.What is the process for return or replacement of SKLWH?
All SKLWH units undergo pre-shipment inspection (PSI). If there is an issue with SKLWH, 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 SKLWH part is unused and in its original packaging.
Return procedure for SKLWH:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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