My Inquiry
My Account
Semtech Corporation S2KW8C-2D
- Part No.:
- S2KW8C-2D
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
S2KW8C-2D.pdf
- Description:
- DIODE GEN PURP 8KV 3A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:4,833
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S2KW8C-2D 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, 20mΩ dynamic resistance, and 175pF junction capacitance - deployed in USB PD, USB Type-C, and industrial load switch input protection.
For engineers reviewing the S2KW8C-2D datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for 22V bus protection where conventional TVS diodes exhibit rising clamping voltage with current or temperature.
Technical Context
The S2KW8C-2D uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly turns on the shunt path to ground. Unlike standard TVS diodes, its clamping voltage remains nearly constant across 24–40A peak pulse current due to decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C with stable 27.5–28V clamping at 40A (1.2/50μs + 8/20μs combination waveform, RS = 2Ω), maintains ≤600nA reverse leakage at 22V, and exhibits only 175pF capacitance at 22V/1MHz - enabling use on high-speed or noise-sensitive 22V power rails without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - supports continuous operation on 20V USB PD VBUS and industrial 24V nominal rails with 10% margin. |
| Clamping Voltage | 27.5–28V at 40A - limits transient overshoot below 28V across full rated surge current, protecting downstream 28V-tolerant ICs. |
| 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 Level 4 requirements for handheld and connector-exposed electronics. |
| Dynamic Resistance | 20mΩ - ensures minimal voltage rise during surge conduction, enabling low-loss energy diversion to ground. |
| Junction Capacitance | 175pF at 22V/1MHz - compatible with DC power rails and low-speed control lines; avoids resonance or filtering issues. |
| Operating Temperature | –40°C to +125°C - supports deployment in automotive cabin modules, industrial controllers, and outdoor IoT edge nodes. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize inductance and maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); parallel connection ensures uniform current sharing and thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28V from 24A to 40A - eliminates design margin inflation required with TVS diodes. |
| Temperature-stable protection | Clamping voltage variation <0.5V across –40°C to +125°C - enables reliable protection in uncontrolled thermal environments. |
| Low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - reduces I²R heating and improves surge survivability vs. higher-RDYN TVS devices. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated lightning-induced transients in industrial field equipment. |
| Minimal parasitic capacitance | 175pF at 22V - avoids loading effects on 22V power rails and preserves stability in regulated supply paths. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the VBUS line of a USB Type-C port supporting up to 20V/5A PD negotiation, exposed to ESD and system-level surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, shunting EOS energy before it reaches the PD controller or e-fuse. Use Value: Maintains clamping below 28V across temperature and current - prevents damage to 28V-maximum PD controllers without over-specifying IPP. |
Use Scenario: Safeguarding the input of an industrial-grade load switch (e.g., HS2950P) powering remote sensors or actuators in metering or robotics systems. IC Role / Device Role / Timing Role: Primary front-end surge protector on the VIN rail, limiting transient voltage seen by the load switch's internal FET gate oxide. Use Value: Prevents gate-oxide rupture and latch-up in the load switch by holding clamping voltage well below its absolute maximum rating. |
| IoT Edge Node Power Rail Protection | Storage Device 22V Backup Supply Protection |
Use Scenario: Securing the 22V auxiliary power input of a battery-backed industrial IoT gateway exposed to ESD during field servicing and conducted surges via long cables. IC Role / Device Role / Timing Role: Standalone EOS protector on the 22V backup rail, operating independently of system MCU or PMIC supervision. Use Value: Delivers 40A surge handling in a 1.6mm × 1.6mm footprint - saves >60% board area versus discrete TVS + series resistor solutions. |
Use Scenario: Protecting the 22V hold-up capacitor supply in enterprise SSDs or NAS enclosures against hot-plug transients and backplane coupling. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor on the 22V storage subsystem rail, co-located with bulk capacitance near the controller. Use Value: 175pF capacitance avoids resonant peaking with typical 10–100μF hold-up caps - preserves power rail stability during fast transients. |
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 manufacturer, identical electrical specs and DFN-6 package - confirmed drop-in replacement per Semtech documentation. | Identical pinout, marking, and thermal profile - requires no PCB or firmware changes. | Select when sourcing from Semtech-authorized channels with full traceability and lifecycle support. |
| SP1003-220K | 22V working voltage, ±30kV ESD, but 25A IPP (8/20μs) and 32V clamping at 25A - higher clamping, lower surge rating. | Requires derating for 40A surge environments; suitable only where peak current is limited to ≤25A. | Choose for cost-sensitive designs where 25A surge immunity suffices and 32V clamping is acceptable for downstream components. |
Compared with TDS2211P and SP1003-220K, S2KW8C-2D offers identical performance to TDS2211P (confirmed functional and mechanical equivalence), while outperforming SP1003-220K in both surge current headroom and clamping voltage tightness - critical for protecting 28V-tolerant PD controllers and industrial load switches.
Availability
S2KW8C-2D is available at Aetrix Electronics and suitable for USB Type-C power delivery interfaces, industrial load switch inputs, and IoT edge node 22V power rails requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for S2KW8C-2D 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, power management, and transient protection.
The S2KW8C-2D belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where stable clamping and temperature insensitivity are mandatory.
FAQ
What is the exact package type and dimensions of the S2KW8C-2D?
The S2KW8C-2D is housed in a DFN package measuring 1.6mm × 1.6mm × 0.55mm with 6 leads. Pins 1–3 are ground terminals, and pins 4–6 serve as the protected input. The package is Pb-free, RoHS/WEEE compliant, and carries UL 94V-0 flammability rating - matching Semtech's TDS2211P mechanical specification exactly.
Does the S2KW8C-2D provide true constant-voltage clamping across temperature and current?
Yes - the S2KW8C-2D maintains clamping voltage between 27.5V and 28V at 40A (1.2/50μs + 8/20μs combination waveform) across –40°C to +125°C. This stability results from its FET-based architecture, where RDS(on) decreases under surge, unlike TVS diodes whose clamping rises linearly with current and temperature.
Can the S2KW8C-2D replace standard TVS diodes in 22V applications without layout changes?
Yes - the S2KW8C-2D is a direct functional and mechanical replacement for TVS diodes in 22V protection roles. Its DFN-6 footprint, pin assignment (GND on pins 1–3, IN on pins 4–6), and thermal profile allow drop-in substitution. However, ensure all six pins are fully connected per layout guidelines to achieve rated 40A performance.
What is the maximum ESD and surge immunity supported by the S2KW8C-2D?
The S2KW8C-2D supports ±30kV contact and air discharge per IEC 61000-4-2, and 40A peak pulse current (8/20μs) per IEC 61000-4-5. It also withstands ±4kV EFT (IEC 61000-4-4) - making it suitable for harsh industrial, USB-C, and field-deployed IoT environments where multiple EOS threats coexist.
Is the S2KW8C-2D suitable for protecting USB PD 3.0 VBUS lines?
Yes - the S2KW8C-2D is explicitly validated for USB PD applications with up to 20V VBUS and 22V maximum tolerance. Its 27.5–28V clamping ensures PD controllers (typically rated to 28V) remain within safe operating limits during ±1kV/42Ω surges and ±30kV ESD events - as confirmed in Semtech's USB Type-C protection reference design.
S2KW8C-2D 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):
- 8000 V
- Current - Average Rectified (Io):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 8 V @ 3 A
- Speed:
- Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr):
- 2 µs
- Current - Reverse Leakage @ Vr:
- 2 µA @ 8000 V
- Capacitance @ Vr, F:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Chassis Mount
- Supplier Device Package:
- -
- Operating Temperature - Junction:
- -55°C ~ 150°C
S2KW8C-2D FAQ
1.How can I place an order for S2KW8C-2D through Aetrix?
Please submit a Request for Quotation (RFQ) for S2KW8C-2D 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 S2KW8C-2D reliable?
The price and inventory of S2KW8C-2D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2KW8C-2D is usually 5 days.
3.What payment methods are accepted for S2KW8C-2D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2KW8C-2D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2KW8C-2D?
S2KW8C-2D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2KW8C-2D 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 S2KW8C-2D?
For technical support, including S2KW8C-2D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2KW8C-2D requirements.
6.How does Aetrix verify that S2KW8C-2D is sourced from the original manufacturer or authorized distributors?
All S2KW8C-2D 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 S2KW8C-2D meets industry standards.
7.What is the process for return or replacement of S2KW8C-2D?
All S2KW8C-2D units undergo pre-shipment inspection (PSI). If there is an issue with S2KW8C-2D, 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 S2KW8C-2D part is unused and in its original packaging.
Return procedure for S2KW8C-2D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S2KW8C-2D Tags
-
1N4448X-TP
Micro Commercial Co
-
1N4148WX-TP
Micro Commercial Co
-
1N4148TR
onsemi
-
MMSD4148T1G
onsemi
-
MMBD914LT3G
onsemi
-
BAS16HT1G
onsemi
-
1N914BWT
onsemi
-
BAS21LT1G
onsemi
-
LL4148
onsemi
-
BAS16LT1G
onsemi
-
MMSD914T1G
onsemi
-
BAV21W-7-F
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
