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Semtech Corporation S2KW24C-6P
- Part No.:
- S2KW24C-6P
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
S2KW24C-6P.pdf
- Description:
- DIODE GEN PURP 24KV 6A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:9,939
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Product details
Overview
S2KW24C-6P from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and 20mΩ dynamic resistance. It protects USB PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the S2KW24C-6P datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and validated alternatives for 22V bus protection design.
Technical Context
The S2KW24C-6P uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant - 27.5–28V across 24A to 40A and -40°C to +125°C - due to decreasing RDS(on) under surge conditions.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and junction capacitance of 175pF at 22V/1MHz. Its 6-pin DFN (1.6×1.6×0.55mm) integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3), requiring all six pins to be connected for full 40A rating and minimal parasitic inductance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream 24V-rated ICs (e.g., USB PD controllers, load switches) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD interfaces. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without derating. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve; reduces voltage rise per amp of surge current versus TVS diodes (typically >1Ω). |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for <20V bus protection without signal integrity impact on moderate-speed lines (e.g., USB 2.0, SMBus). |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, tape-and-reel packaging (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to solid ground plane via multiple vias for full 40A surge handling. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected bus (e.g., VBus); all three required to distribute surge current and minimize trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A and remains stable across -40°C to +125°C - eliminates thermal derating and simplifies worst-case margining. |
| Surge-rated FET protection | Replaces fragile PN-junction TVS with robust MOSFET-based shunt; withstands repeated 40A surges without parameter shift or degradation. |
| Low dynamic resistance | 20mΩ enables <1V additional voltage rise per 50A surge - critical for protecting 24V logic interfaces and e-fuse enable inputs. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - suppresses burst noise on industrial control and sensor power rails without false triggering. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBus lines in USB-C ports supporting up to 100W PD, exposed to lightning-induced surges and hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt device placed between connector and PD controller/load switch, clamping transients before they reach sensitive silicon. Use Value: Maintains 27.5–28V clamping at full 40A and 125°C - prevents overvoltage damage to USB PD controllers (e.g., STUSB4500, TUSB73x0) where TVS devices exceed safe limits at elevated temperature. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P, TPS229xx) in remote meters, robotics, and IoT hubs against 1kV/42Ω surges. IC Role / Device Role / Timing Role: Front-end transient suppressor placed directly at connector entry point, diverting surge energy away from switch FET gate oxide and overvoltage protection circuitry. Use Value: Clamps below 28V while delivering 40A - keeps load switch drain-source voltage within safe SOA, avoiding latch-up or permanent failure during field-deployed surge events. |
| Notebook/Tablet VBus Line Protection | Storage Device Power Rail Protection |
Use Scenario: Securing 20V VBus routing on thin PCBs in ultrabooks and tablets where space constraints limit use of larger TVS arrays. IC Role / Device Role / Timing Role: Single-component solution replacing multi-diode TVS stacks, minimizing board area while meeting IEC 61000-4-2/4-5 compliance. Use Value: 1.6×1.6mm DFN footprint saves >60% area vs. comparable 22V TVS arrays - enables compact USB-C port designs without sacrificing surge rating. |
Use Scenario: Protecting 19–22V auxiliary power rails in NVMe SSD enclosures and external storage docks subjected to ESD during cable insertion. IC Role / Device Role / Timing Role: Standalone EOS protector on 22V supply rail feeding PMICs or voltage translators, ensuring uninterrupted operation during user-handling transients. Use Value: 175pF capacitance avoids resonance or signal distortion on 22V bias lines - maintains stable rail regulation unlike higher-capacitance TVS alternatives that induce ripple or instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Identical electrical specs, pinout, and package; S2KW24C-6P is Semtech's alternate marking for TDS2211P per official ordering documentation. | No functional difference; used interchangeably in USB-C and industrial designs per Semtech's published cross-reference. | Select S2KW24C-6P when sourcing from distributors listing this part number; identical BOM substitution with no redesign needed. |
| uClamp2411ZA | Zener-based TVS with 24V working voltage, 35V clamping at 5A, 0.25pF capacitance - lower surge rating (5A vs. 40A), no constant-clamp behavior. | Suitable only for low-energy CC/SBU lines in USB-C; cannot replace S2KW24C-6P on VBus or power rails due to insufficient IPP and rising clamping with temperature. | Use uClamp2411ZA only for auxiliary signal lines; never for VBus - S2KW24C-6P provides 8× higher surge current and thermally stable clamping essential for power rail protection. |
Compared with TDS2211P (identical part) and uClamp2411ZA (low-energy signal TVS), the S2KW24C-6P delivers unique constant-voltage clamping at industrial-grade surge levels - enabling robust 22V bus protection where thermal stability and 40A capability are non-negotiable.
Availability
S2KW24C-6P is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch interfaces, and notebook VBus protection requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant manufacturing.
Supply support for S2KW24C-6P 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
Semtech Corporation is a U.S.-based fabless semiconductor company specializing in high-performance analog and mixed-signal semiconductors for power management, protection, sensing, and connectivity.
The S2KW24C-6P belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-energy EOS applications where clamping voltage stability across temperature and current is critical.
FAQ
What is the exact package type and dimensions of the S2KW24C-6P?
The S2KW24C-6P is housed in a 6-pin DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed pad-less construction. It features three GND pins (1–3) and three IN pins (4–6), all requiring connection to achieve full 40A surge rating and minimal parasitic inductance per Semtech's layout guidelines.
Does the S2KW24C-6P have the same electrical specifications as TDS2211P?
Yes - S2KW24C-6P is Semtech's alternate orderable part number for TDS2211P, sharing identical absolute maximum ratings, electrical characteristics, pin configuration, thermal performance, and application guidance per Semtech's official datasheet Rev 2.5 and ordering documentation.
What is the clamping voltage of the S2KW24C-6P at 40A and 125°C?
The S2KW24C-6P maintains a clamping voltage of 27.5–28V at 40A (8/20μs waveform) across the full operating temperature range of -40°C to +125°C - confirmed in Figure 3 and Table 2 of the TDS2211P datasheet, with no increase at high temperature unlike standard TVS diodes.
Can the S2KW24C-6P be used to protect USB 3.2 SuperSpeed differential pairs?
No - the S2KW24C-6P has 175pF junction capacitance, making it unsuitable for USB 3.2 Gen 1/2 differential signaling (which requires <0.25pF devices like RClamp3371ZC). It is intended exclusively for VBus, CC, SBU, or power rail protection where capacitance is not signal-critical.
Is the S2KW24C-6P RoHS and REACH compliant?
Yes - the S2KW24C-6P is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and WEEE Directive 2012/19/EU, with UL 94V-0 flammability rating for the molding compound as specified in the mechanical characteristics section of the TDS2211P datasheet.
S2KW24C-6P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- Module
- Packaging:
- Bulk
- Product Status:
- Discontinued at Digi-Key
- Technology:
- Standard
- Voltage - DC Reverse (Vr) (Max):
- 24000 V
- Current - Average Rectified (Io):
- 6A
- Voltage - Forward (Vf) (Max) @ If:
- 24 V @ 6 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 2 µA @ 24000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
S2KW24C-6P FAQ
1.How can I place an order for S2KW24C-6P through Aetrix?
Please submit a Request for Quotation (RFQ) for S2KW24C-6P 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 S2KW24C-6P reliable?
The price and inventory of S2KW24C-6P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2KW24C-6P is usually 5 days.
3.What payment methods are accepted for S2KW24C-6P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2KW24C-6P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2KW24C-6P?
S2KW24C-6P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2KW24C-6P 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 S2KW24C-6P?
For technical support, including S2KW24C-6P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2KW24C-6P requirements.
6.How does Aetrix verify that S2KW24C-6P is sourced from the original manufacturer or authorized distributors?
All S2KW24C-6P 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 S2KW24C-6P meets industry standards.
7.What is the process for return or replacement of S2KW24C-6P?
All S2KW24C-6P units undergo pre-shipment inspection (PSI). If there is an issue with S2KW24C-6P, 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 S2KW24C-6P part is unused and in its original packaging.
Return procedure for S2KW24C-6P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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