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Semtech Corporation S1KW80KA-5
- Part No.:
- S1KW80KA-5
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
S1KW80KA-5.pdf
- Description:
- DIODE GEN PURP 80KV 1.5A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:4,988
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Product details
Overview
S1KW80KA-5 from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range. It is used in USB Type-C PD input protection where low, temperature-invariant clamping prevents damage to downstream controllers.
For engineers reviewing the S1KW80KA-5 datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over 40A surge current, DFN-6 package thermal and layout constraints, 175pF junction capacitance at 22V, and compatibility with industrial-grade load switch input protection schemes.
Technical Context
The S1KW80KA-5 employs 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 due to decreasing RDS(on) under surge, not fixed dynamic resistance.
It operates across –40°C to +125°C, maintains ≤600nA reverse leakage at 22V, and achieves 20mΩ dynamic resistance (measured 1–40A, 8/20μs). Its functional architecture separates trigger threshold (≈27V VBR) from conduction path, enabling stable clamping independent of ambient temperature or pulse amplitude.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or degradation |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures protected ICs see <28V during worst-case surges |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 20V USB PD bus protection without signal integrity impact |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 human-body model for robust front-end ESD hardening |
| Dynamic Resistance | 20mΩ - enables flat clamping curve; reduces voltage rise per amp vs. TVS diodes with >1Ω RDYN |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three must be connected to minimize inductance and maximize 40A capability |
| 4, 5, 6 | IN | Protected line input; tied together to handle full surge current across parallel bond wires and internal FET channels |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across 24–40A and –40°C to +125°C - eliminates derating uncertainty in thermal design |
| FET-based shunt architecture | Replaces PN-junction TVS with low-RDS(on) switch - avoids voltage rise proportional to IPP × RDYN |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz) - protects against repetitive fast transients in industrial control environments |
| Small-footprint DFN | 1.6mm × 1.6mm area - saves >50% board space vs. SO-8 or SOT-23 TVS solutions rated for same 40A surge |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD negotiation. IC Role / Device Role / Timing Role: Primary EOS suppressor placed between connector and PD controller or load switch input. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents overvoltage damage to PD controllers whose absolute max rating is often 28–30V. |
Use Scenario: Shielding enable/power inputs of industrial e-fuses (e.g., HS2950P) against lightning-induced surges in remote meters or robotics. IC Role / Device Role / Timing Role: Front-end transient shunt upstream of the load switch's internal FET gate driver and overvoltage protection circuitry. Use Value: Limits voltage seen by the load switch's input stage to ≤28V during ±1kV/42Ω surges - avoids latch-up or oxide breakdown in integrated MOSFET drivers. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet Main Power Input Protection |
Use Scenario: Securing 22V input rails of battery-backed IoT gateways exposed to uncontrolled AC adapters or PoE-derived supplies. IC Role / Device Role / Timing Role: Standalone transient suppressor on main DC input before DC-DC conversion and system PMIC. Use Value: Delivers 1120W peak pulse power handling in 1.6mm² footprint - enables compact, fanless enclosure designs without thermal derating penalties. |
Use Scenario: Hardening 20V input paths of ultrabooks and tablets using USB-C charging, especially where OEMs specify ≥20kV ESD immunity. IC Role / Device Role / Timing Role: First-line defense on main power entry point, coordinated with low-capacitance TVS on data lanes. Use Value: Provides ±30kV contact ESD robustness while adding only 175pF loading - avoids resonance or bandwidth loss on high-current power traces. |
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 die, identical electrical specs and DFN-6 package - direct form-fit-function replacement with identical marking (T22XX) and reel packaging | No difference - validated for identical USB PD, load switch, and industrial use cases per Semtech documentation | Select when requiring Semtech's documented TDS architecture with guaranteed 20mΩ RDYN and temperature-stable clamping |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A; higher clamping, no FET architecture | Higher clamping voltage limits use in 28V-tolerant systems; requires larger package (DO-214AC) and thermal derating above 85°C | Consider only if cost sensitivity outweighs clamping performance and board space constraints |
Compared with TDS2211P and SMAJ22A, S1KW80KA-5 offers identical protection performance and footprint to TDS2211P but is designated under Semtech's alternate part numbering scheme for specific distribution channels; unlike SMAJ22A, it avoids clamping voltage drift with temperature and current, enabling reliable 28V-system margin without overspec'ing.
Availability
S1KW80KA-5 is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, high-volume traceability, and long-term lifecycle support.
Supply support for S1KW80KA-5 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 analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
S1KW80KA-5 belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–24V power rail protection where clamping stability across temperature and current is critical.
FAQ
What is the clamping voltage of S1KW80KA-5 at 40A surge current?
The S1KW80KA-5 clamps at 27.5–28V under IEC 61000-4-5 combination waveform conditions (1.2/50μs voltage + 8/20μs current, RS = 2Ω) at 40A peak pulse current. This value is guaranteed across –40°C to +125°C and reflects its FET-based architecture, not a fixed dynamic resistance like traditional TVS devices.
Is S1KW80KA-5 pin-compatible with TDS2211P?
Yes, S1KW80KA-5 is functionally and physically identical to TDS2211P: same DFN-6 package (1.6mm × 1.6mm), identical pinout (pins 1–3 = GND, pins 4–6 = IN), and matching electrical specifications including 22V working voltage, 40A peak pulse rating, and 27.5–28V clamping. It is a Semtech-authorized alternate marking.
What is the junction capacitance of S1KW80KA-5 and why does it matter?
The S1KW80KA-5 has a junction capacitance of 175pF at 22V and 1MHz. This low value minimizes signal distortion and impedance mismatch on 20V USB PD power rails, ensuring stable regulation and avoiding resonance with bulk input capacitors - critical for maintaining power integrity in compact portable designs.
Can S1KW80KA-5 be used for bidirectional signal line protection?
No, S1KW80KA-5 is designed exclusively for unidirectional protection of positive DC power or I/O lines referenced to ground. Its internal architecture connects all IN pins (4–6) to a common shunt FET drain, and all GND pins (1–3) to source - it does not support symmetrical or AC-coupled signal paths like RS-485 or CAN buses.
How does S1KW80KA-5 improve reliability over standard TVS diodes in industrial applications?
S1KW80KA-5 improves reliability by maintaining stable 27.5–28V clamping across –40°C to +125°C and 1–40A surge currents, whereas standard TVS diodes exhibit rising clamping voltage with both temperature and current due to fixed dynamic resistance. This eliminates thermal runaway risk and ensures consistent protection margin in uncooled enclosures.
S1KW80KA-5 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):
- 80000 V
- Current - Average Rectified (Io):
- 1.5A
- Voltage - Forward (Vf) (Max) @ If:
- 80 V @ 1.5 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 1 mA @ 80000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
S1KW80KA-5 FAQ
1.How can I place an order for S1KW80KA-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for S1KW80KA-5 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 S1KW80KA-5 reliable?
The price and inventory of S1KW80KA-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S1KW80KA-5 is usually 5 days.
3.What payment methods are accepted for S1KW80KA-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S1KW80KA-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S1KW80KA-5?
S1KW80KA-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S1KW80KA-5 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 S1KW80KA-5?
For technical support, including S1KW80KA-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S1KW80KA-5 requirements.
6.How does Aetrix verify that S1KW80KA-5 is sourced from the original manufacturer or authorized distributors?
All S1KW80KA-5 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 S1KW80KA-5 meets industry standards.
7.What is the process for return or replacement of S1KW80KA-5?
All S1KW80KA-5 units undergo pre-shipment inspection (PSI). If there is an issue with S1KW80KA-5, 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 S1KW80KA-5 part is unused and in its original packaging.
Return procedure for S1KW80KA-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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