My Inquiry
My Account
Semtech Corporation S2KW24C-6D
- Part No.:
- S2KW24C-6D
- Manufacturer:
- Semtech Corporation
- Category:
- Single Diodes
- Package:
- Module
- Datasheet:
-
S2KW24C-6D.pdf
- Description:
- DIODE GEN PURP 24KV 3A MODULE
- Quantity:
- Payment:
- Shipping:
Inventory:7,475
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
S2KW24C-6D 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), and stable 27.5–28V clamping across temperature and current range - deployed in USB Type-C PD, load switch input protection, and industrial equipment.
For engineers reviewing the S2KW24C-6D datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, functional role in surge shunting, and real-world alternatives validated for 22V bus protection with constant-clamp behavior.
Technical Context
The S2KW24C-6D uses a surge-rated FET as its primary protection element, activated by an integrated 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 ultra-low dynamic resistance (20 mΩ) and decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C, maintains ≤600 nA reverse leakage at 22V, and delivers 1120W peak pulse power. Its 175 pF junction capacitance at 22V/1MHz supports moderate-speed data/power line protection without signal integrity compromise.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - stays flat across temperature and current, enabling predictable downstream IC survivability. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial and USB PD applications. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and consumer interface ESD requirements. |
| Dynamic Resistance | 20 mΩ - ensures minimal voltage rise during surge conduction, critical for low-voltage margin systems. |
| Junction Capacitance | 175 pF at 22V/1MHz - suitable for DC power rails and medium-speed control lines; not for >100MHz data paths. |
| Package | DFN 1.6 × 1.6 × 0.55 mm, 6-lead - enables compact placement near connectors with minimal PCB area. |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), RoHS-compliant, Pb-free, UL 94V-0 molding compound. Thermal pad not required - energy dissipated in silicon FET.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three pins must be connected to maximize current handling and minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); parallel connection ensures uniform current sharing and optimal clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5 V from 24A to 40A surge - eliminates design margin uncertainty vs. TVS diodes. |
| FET-based shunt protection | Surge energy diverted through low-RDS(on) MOSFET instead of PN-junction - avoids thermal runaway at high temperature. |
| Wide operating temperature | Stable performance from –40°C to +125°C - validated for industrial and automotive under-hood environments. |
| Low dynamic resistance | 20 mΩ measured between 1A–40A - minimizes IR drop during surge, preserving voltage margin for protected ICs. |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 5 kHz & 100 kHz) - protects against repetitive fast transients in motor drives and PLCs. |
Applications
| USB Type-C Power Delivery Protection | Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C ports supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary shunt protector placed between connector and PD controller or load switch input. Use Value: Maintains clamping at ≤28 V across full temperature range - prevents damage to 30V-max PD controllers even at 125°C ambient. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient suppressor absorbing 40A surges before they reach the switch's internal FET gate or drain. Use Value: Keeps clamped voltage below 30V - avoids gate oxide rupture or drain-source avalanche in 30V-rated load switches. |
| Industrial 24V Rail Protection | IoT Device Power Input Protection |
|
Use Scenario: Securing 24V DC input rails in programmable logic controllers (PLCs), HMIs, and factory automation sensors. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main power entry point, upstream of DC-DC converters and LDOs. Use Value: Delivers 1120W peak pulse power handling - satisfies IEC 61000-4-5 Level 4 (±1 kV, 42 Ω source) without derating. |
Use Scenario: Hardening battery-charged or PoE-powered IoT edge nodes (e.g., smart sensors, gateways) against field ESD and induced surges. IC Role / Device Role / Timing Role: Compact, low-leakage protector on main power input, co-located with connector for shortest possible trace length. Use Value: 130–600 nA leakage at 22V enables multi-year battery life in always-on devices without compromising surge robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Identical electrical specs, same DFN-6 package, identical marking code T22 - direct Semtech replacement with same date-code format. | No functional difference; used interchangeably in USB-C and industrial designs per Semtech documentation. | Select when sourcing from authorized Semtech channels with full traceability and same production lot controls. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 24.7A - clamping rises linearly with current and temperature. | Higher clamping voltage limits use in tight-margin 30V systems; requires larger derating at elevated temperatures. | Choose only if cost sensitivity outweighs clamping stability - not recommended for USB PD or high-temp industrial use. |
Compared with TDS2211P.C (identical function and form) and SMAJ22A (higher-clamp TVS), the S2KW24C-6D delivers superior thermal stability and lower clamping voltage under surge, enabling smaller system-level margins and eliminating temperature-dependent design iterations.
Availability
S2KW24C-6D is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial 24V power rails, and IoT device input protection requiring stable component supply, long-lifecycle support, and consistent surge performance across temperature extremes.
Supply support for S2KW24C-6D 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 connectivity.
The S2KW24C-6D belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 22V–24V power and interface protection where constant clamping and temperature stability are mandatory.
FAQ
What is the exact package type and footprint for S2KW24C-6D?
The S2KW24C-6D uses a DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed pad-less construction. Pin 1 is marked by a laser dot; pins 1–3 are GND, pins 4–6 are IN. Land pattern follows Semtech's recommended 0.30 mm pad width and 0.50 mm pitch - no thermal pad required since energy dissipates in the silicon FET.
Does S2KW24C-6D meet IEC 61000-4-5 Level 4 surge immunity?
Yes, the S2KW24C-6D is rated for 40A peak pulse current (8/20μs waveform), which satisfies IEC 61000-4-5 Level 4 (±1 kV, 42 Ω source impedance, 0.5 μF coupling capacitor). Its 27.5–28 V clamping voltage at 40A ensures protected downstream components remain within safe operating voltage limits during full-spec surges.
How does S2KW24C-6D differ from standard TVS diodes like SMAJ22A?
Unlike SMAJ22A - a conventional PN-junction TVS - the S2KW24C-6D uses a triggered FET shunt architecture. This yields constant clamping (~28 V from 24A to 40A), 20 mΩ dynamic resistance, and stable performance from –40°C to +125°C. SMAJ22A exhibits rising clamping (to ~35.5 V) and reduced IPP capability at high temperature.
Can S2KW24C-6D be used on high-speed data lines such as USB SuperSpeed?
No - the S2KW24C-6D has 175 pF junction capacitance at 22V/1MHz, making it unsuitable for USB 3.x, PCIe, or HDMI data lanes. It is intended for DC power rails (VBUS, 24V inputs) and low-to-medium-speed control lines. For SuperSpeed lines, Semtech recommends RClamp3371ZC (<0.25 pF).
What is the maximum continuous reverse leakage current for S2KW24C-6D at 22V?
The S2KW24C-6D specifies reverse leakage current (IR) of 130–600 nA at VRWM = 22V and TA = 25°C. This ultra-low leakage supports battery-powered IoT devices and ensures minimal standby power loss in always-on industrial systems without compromising surge robustness.
S2KW24C-6D 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):
- 3A
- Voltage - Forward (Vf) (Max) @ If:
- 24 V @ 3 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-6D FAQ
1.How can I place an order for S2KW24C-6D through Aetrix?
Please submit a Request for Quotation (RFQ) for S2KW24C-6D 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-6D reliable?
The price and inventory of S2KW24C-6D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for S2KW24C-6D is usually 5 days.
3.What payment methods are accepted for S2KW24C-6D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for S2KW24C-6D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for S2KW24C-6D?
S2KW24C-6D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your S2KW24C-6D 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-6D?
For technical support, including S2KW24C-6D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your S2KW24C-6D requirements.
6.How does Aetrix verify that S2KW24C-6D is sourced from the original manufacturer or authorized distributors?
All S2KW24C-6D 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-6D meets industry standards.
7.What is the process for return or replacement of S2KW24C-6D?
All S2KW24C-6D units undergo pre-shipment inspection (PSI). If there is an issue with S2KW24C-6D, 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-6D part is unused and in its original packaging.
Return procedure for S2KW24C-6D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
S2KW24C-6D 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 …
