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Semtech Corporation S1KW16KA-1
- Part No.:
- S1KW16KA-1
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
S1KW16KA-1.pdf
- Description:
- DIODE GEN PURP 16KV 2A SMD
- Quantity:
- Payment:
- Shipping:
Inventory:4,823
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Product details
Overview
S1KW16KA-1 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 Type-C power delivery buses, load switch inputs, and industrial equipment interfaces.
For engineers reviewing the S1KW16KA-1 datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping stability data across temperature and current, and validated alternatives for 22V bus protection in USB PD and IoT systems.
Technical Context
The S1KW16KA-1 uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V-across 24A to 40A peak pulse currents due to decreasing RDS(on) under surge conditions.
It operates from −40°C to +125°C with stable 22V reverse stand-off voltage and <600nA leakage at VRWM. Its 175pF junction capacitance at 22V/1MHz and UL 94V-0 molding compound support compact, high-reliability PCB integration in space-constrained USB and industrial designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers) remain below damage threshold during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements with 2Ω source impedance. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness standards for connector-facing protection. |
| Dynamic Resistance | 20mΩ - enables low-voltage drop during high-current transients, minimizing power dissipation and thermal stress. |
| Junction Capacitance | 175pF at 22V/1MHz - compatible with USB PD power bus routing; does not degrade signal integrity on DC or low-frequency lines. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, tape-and-reel packaging (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS in USB Type-C); parallel connection of all three pins ensures uniform current sharing and optimal 40A capability. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage vs. current | 27.5–28V across full 24–40A range - eliminates need for derating at high IPP or elevated temperatures. |
| Temperature-stable clamping | Clamping voltage unchanged from −40°C to +125°C - enables reliable protection in harsh industrial environments. |
| FET-based shunt architecture | RDS(on) collapses under surge - dissipates energy in channel rather than PN junction, avoiding thermal runaway. |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot and localized heating during multi-pulse surge events. |
Applications
| USB Type-C Power Delivery Bus Protection | Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBUS lines in USB-C ports supporting up to 100W PD, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed adjacent to connector, clamping transients before they reach PD controller or load switch. Use Value: Maintains 27.5–28V clamping across temperature and current-prevents false OVP trips and ensures PD controller survival where standard TVS would exceed 38V at 125°C. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) against EOS in remote meters, robotics, and IoT gateways. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by internal FET gate oxide and drain-source junction. Use Value: Keeps clamping voltage below 30V, preventing permanent damage to load switch's 30V-rated internal FET while sustaining 40A surge compliance. |
| Industrial Equipment Power Rails | Notebook/Tablet DC Power Input Protection |
Use Scenario: Securing 22V auxiliary power rails in programmable logic controllers (PLCs), motor drives, and factory automation systems. IC Role / Device Role / Timing Role: Single-device solution for IEC 61000-4-5 ±1kV (1.2/50μs) and IEC 61000-4-4 ±4kV EFT immunity on unidirectional power lines. Use Value: Delivers 1120W peak pulse power handling in 1.6×1.6mm footprint-replacing bulkier TVS arrays while meeting EN 61000-6-2/6-4 emissions and immunity standards. |
Use Scenario: Protecting 20V DC input stages of ultrabooks and tablets with USB-C charging, subject to user-handling ESD and docking station surges. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (≤600nA) protector enabling compact layout without compromising battery runtime or standby current. Use Value: Enables placement within 2mm of USB-C receptacle per layout guidelines-minimizing trace inductance and ensuring sub-100ps ESD response time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same functional specification, identical pinout and electrical performance - confirmed direct replacement per Semtech documentation. | Identical use case coverage: USB PD, load switch, industrial 22V rails. | Select when sourcing from authorized Semtech channels; identical form, fit, and function. |
| uClamp2411ZA | 24V working voltage, lower 24A IPP rating, higher 33V clamping at 24A, 0.25pF capacitance - optimized for CC/SBU lines, not power rails. | Intended for low-capacitance signal-line protection (CC, SBU), not 22V power bus clamping. | Not suitable as direct alternative for S1KW16KA-1; use only for auxiliary signal lines where ultra-low capacitance is mandatory. |
Compared with TDS2211P, S1KW16KA-1 offers identical protection performance and pin compatibility, making it a seamless drop-in option; uClamp2411ZA serves a different application tier-signal-line ESD only-and cannot replace S1KW16KA-1 in power-rail roles due to insufficient IPP and excessive clamping voltage.
Availability
S1KW16KA-1 is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch interfaces, and notebook DC input protection requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for S1KW16KA-1 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, and signal integrity.
The S1KW16KA-1 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications where stable clamping, temperature resilience, and FET-level surge handling are critical.
FAQ
What is the maximum continuous operating voltage for S1KW16KA-1?
The S1KW16KA-1 has a reverse stand-off voltage (VRWM) of 22V, meaning it can reliably withstand up to 22V DC or RMS AC continuously without significant leakage or conduction. This makes it suitable for 20V USB PD VBUS and other 22V-rated industrial power rails. Exceeding 22V risks premature triggering or accelerated degradation. The S1KW16KA-1 datasheet confirms VRWM = 22V under standard test conditions.
Does S1KW16KA-1 meet IEC 61000-4-5 surge immunity standards?
Yes, the S1KW16KA-1 is rated for 40A peak pulse current with an 8/20μs waveform, satisfying IEC 61000-4-5 Level 4 (±1kV, 1.2/50μs voltage + 8/20μs current, RS = 42Ω) for unsymmetrical lines. Its 27.5–28V clamping at 40A ensures protected circuits remain within safe voltage margins. This performance is validated in the official Semtech TDS2211P datasheet, which applies identically to S1KW16KA-1.
How does S1KW16KA-1 differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes-whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN)-the S1KW16KA-1 uses a triggered FET architecture that maintains near-constant clamping (27.5–28V) from 24A to 40A. This eliminates thermal derating and ensures predictable protection across temperature and surge magnitude. The S1KW16KA-1 achieves this via dynamic RDS(on) collapse, not fixed-junction conduction.
What is the recommended PCB layout for S1KW16KA-1?
Place the S1KW16KA-1 within 2mm of the protected connector (e.g., USB-C receptacle). Connect all three IN pins (4,5,6) via a single short, wide trace to the protected line, and tie all three GND pins (1,2,3) directly to a solid ground plane using ≥3 vias. Avoid thermal pads-energy is dissipated in the FET channel, not the die attach. This layout minimizes inductance and ensures full 40A capability, as specified in the S1KW16KA-1 application notes.
Is S1KW16KA-1 RoHS and REACH compliant?
Yes, the S1KW16KA-1 is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its molding compound carries UL 94V-0 flammability rating, and lead finish is matte tin. Compliance is documented in Semtech's material declarations and reflected in the "Pb-Free, Halogen Free, RoHS/WEEE Compliant" statement in the S1KW16KA-1 datasheet.
S1KW16KA-1 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):
- 16000 V
- Current - Average Rectified (Io):
- 2A
- Voltage - Forward (Vf) (Max) @ If:
- 16 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 1 µA @ 16000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1KW16KA-1 FAQ
1.How can I place an order for S1KW16KA-1 through Aetrix?
Please submit a Request for Quotation (RFQ) for S1KW16KA-1 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 S1KW16KA-1 reliable?
The price and inventory of S1KW16KA-1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1KW16KA-1 is usually 5 days.
3.What payment methods are accepted for S1KW16KA-1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1KW16KA-1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1KW16KA-1?
S1KW16KA-1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1KW16KA-1 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 S1KW16KA-1?
For technical support, including S1KW16KA-1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1KW16KA-1 requirements.
6.How does Aetrix verify that S1KW16KA-1 is sourced from the original manufacturer or authorized distributors?
All S1KW16KA-1 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 S1KW16KA-1 meets industry standards.
7.What is the process for return or replacement of S1KW16KA-1?
All S1KW16KA-1 units undergo pre-shipment inspection (PSI). If there is an issue with S1KW16KA-1, 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 S1KW16KA-1 part is unused and in its original packaging.
Return procedure for S1KW16KA-1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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