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Semtech Corporation RCLAMP2431T.TCT
- Part No.:
- RCLAMP2431T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP2431T.TCT.pdf
- Description:
- TVS DIODE 24VWM 50VC SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:11,324
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Product details
Overview
RCLAMP2431T.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 24V-rated power or I/O lines in USB Type-C, USB PD, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 28V (IPP = 40A, 8/20μs), maintains constant clamping across –40°C to +125°C, and uses a surge-rated FET architecture for low dynamic resistance (20mΩ).
For engineers reviewing the RCLAMP2431T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge current and temperature, 24V working voltage compatibility, DFN-6 package footprint constraints, and integration with load switch or USB PD controller protection schemes.
Technical Context
RCLAMP2431T.TCT employs a precision-triggered shunt FET as its primary protection element - not a conventional TVS diode - enabling near-constant clamping voltage (27.5–28V) across 24A–40A peak pulse currents (8/20μs) and –40°C to +125°C operating range. Its trigger circuit activates the FET when transient voltage exceeds breakdown, leveraging ultra-low RDS(on) to minimize voltage rise during surge conduction.
The device protects one unidirectional line (IN-to-GND), with three parallel input pins (4/5/6) and three ground pins (1/2/3) to reduce parasitic inductance and maximize surge current handling. It exhibits 175pF junction capacitance at 22V bias and <600nA reverse leakage at VRWM, making it suitable for medium-speed bus protection where capacitance is non-critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 24 V - Maximum continuous DC or RMS operating voltage on protected line without triggering |
| Clamping Voltage (VC) | 28 V at IPP = 40A (8/20μs) - Peak voltage seen by downstream IC during worst-case surge, enabling robust 24V system margin |
| Peak Pulse Current (IPP) | 40 A (8/20μs) - Withstands high-energy lightning-induced surges per IEC 61000-4-5 Level 4 |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Survives direct human-body-model ESD events without degradation |
| Dynamic Resistance (RDYN) | 20 mΩ - Low ON-resistance of shunt FET ensures minimal IR drop and stable clamping under rising current |
| Junction Capacitance (CJ) | 175 pF at VR = 22V, 1MHz - Compatible with USB PD power bus and industrial control lines, not high-speed data lanes |
| Operating Temperature | –40°C to +125°C - Fully specified performance across automotive-grade and industrial ambient ranges |
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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to PCB ground plane via multiple vias for full 40A surge rating |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBUS or power rail); shared connection minimizes trace inductance and distributes surge current |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient suppression | Replaces conventional TVS diodes with active shunt FET, eliminating linear VC = VBR + IPP×RDYN drift and enabling flat clamping curve |
| Temperature-stable clamping | Clamping voltage remains ≤28V from –40°C to +125°C - critical for industrial equipment operating in uncontrolled environments |
| High-energy surge rating | 1120W peak pulse power (8/20μs) supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS=42Ω) on 24V systems |
| Low dynamic resistance | 20mΩ RDYN ensures <1V additional voltage rise between 1A–40A surge, preserving voltage headroom for downstream regulators |
| Space-optimized DFN layout | 1.6mm × 1.6mm footprint saves >50% board area vs. SOIC-8 TVS solutions while maintaining thermal and surge performance |
Applications
| USB Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–24V USB PD power bus against ESD, lightning surges, and hot-plug transients in portable chargers and docking stations. IC Role / Device Role / Timing Role: Primary overvoltage clamp placed directly at Type-C connector, upstream of PD controller and buck converter. Use Value: Maintains 28V clamping at 40A and 125°C - avoids overvoltage damage to PD controllers rated for ≤30V absolute max, unlike TVS diodes whose clamping rises with temperature. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., HS2950P) exposed to field wiring surges in remote meters and PLC I/O modules. IC Role / Device Role / Timing Role: Front-end transient shunt that diverts surge energy before it reaches the load switch's internal FET gate oxide or drain-source junction. Use Value: Prevents latch-up or permanent failure of the load switch by holding clamped voltage below its 30V VDS(max), enabled by stable 28V clamping independent of ambient temperature. |
| IoT Gateway Power Rail Protection | Robotics Motor Driver Supply Protection |
|
Use Scenario: Securing 24V auxiliary power rails in edge IoT gateways subjected to ESD from user-accessible ports and conducted noise from adjacent RF modules. IC Role / Device Role / Timing Role: Single-point protection element on main 24V input, co-located with bulk capacitor and upstream of DC-DC converters. Use Value: Delivers ±30kV ESD immunity and 40A surge capability in minimal area, reducing BOM count versus multi-device TVS+MOV solutions while ensuring long-term reliability in unattended deployments. |
Use Scenario: Shielding motor driver IC supply inputs from back-EMF spikes and inductive switching transients in collaborative robot joint controllers. IC Role / Device Role / Timing Role: Fast-acting shunt suppressor placed at driver IC VDD pin, activated within nanoseconds of overvoltage detection to clamp transients before propagation. Use Value: 20mΩ dynamic resistance limits voltage overshoot to <1V above clamping threshold during fast-rising transients, preventing false shutdown or internal latch-up in sensitive driver logic. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | 22V VRWM, 27.5–28V clamping at 40A, same DFN-6 package, identical FET-based architecture | Optimized for 22V systems (e.g., USB PD nominal 20V); slightly lower working voltage reduces margin for 24V rails | Select TDS2211P only if system nominal voltage is ≤22V and tighter clamping tolerance is required |
| uClamp2411ZA | 24V VRWM, 33V clamping at 12A (8/20μs), SOD-323 package, conventional TVS diode structure | Limited to 12A surge rating and exhibits rising clamping with temperature; higher 33V VC risks exceeding 30V IC thresholds at elevated temps | Choose uClamp2411ZA only for cost-sensitive, low-surge-risk applications where 12A rating suffices and board space allows larger SOD-323 footprint |
Compared with TDS2211P, RCLAMP2431T.TCT offers higher 24V working voltage margin for modern USB PD and industrial 24V systems; compared with uClamp2411ZA, it delivers 3.3× higher surge current rating and thermally stable clamping - essential for mission-critical protection where voltage excursions must remain predictable across temperature and stress levels.
Availability
RCLAMP2431T.TCT is available at Aetrix Electronics and suitable for USB PD implementations, industrial load switch protection, and robotics motor driver supply conditioning requiring stable component supply and guaranteed surge performance across extended temperature ranges.
Supply support for RCLAMP2431T.TCT 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 protection, signal integrity, and wireless infrastructure.
RCLAMP2431T.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace traditional TVS diodes with FET-based architectures for applications demanding flat clamping, high surge endurance, and temperature-invariant performance.
FAQ
What is the maximum continuous operating voltage for RCLAMP2431T.TCT?
RCLAMP2431T.TCT has a reverse stand-off voltage (VRWM) of 24 V, meaning it can continuously withstand up to 24 V DC or RMS on the protected line without entering conduction. This makes it suitable for 24V industrial buses and USB PD power delivery systems operating up to 20–24V nominal.
How does RCLAMP2431T.TCT achieve stable clamping voltage across temperature?
RCLAMP2431T.TCT uses a precision-triggered shunt FET instead of a pn-junction TVS diode. When triggered, the FET's RDS(on) drops to ~20mΩ, causing clamping voltage to track the fixed breakdown voltage of the trigger circuit - not the current-dependent VBR + IPP×RDYN of conventional TVS devices. This architecture ensures ≤28V clamping from –40°C to +125°C.
Can RCLAMP2431T.TCT protect high-speed data lines like USB SuperSpeed or PCIe?
No. RCLAMP2431T.TCT has 175 pF junction capacitance at 22V bias, which is too high for USB 3.x (≤0.3 pF typical) or PCIe signaling. It is intended for power rails and medium-speed control lines (e.g., USB PD CC, load switch EN). For data lines, Semtech recommends low-capacitance devices such as RClamp3371ZC (<0.25 pF).
What is the recommended PCB layout for optimal surge performance of RCLAMP2431T.TCT?
Place RCLAMP2431T.TCT as close as possible to the protected connector. 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 thermal vias. Avoid stubs or splits in the ground path to minimize inductance and preserve 40A surge capability.
Is RCLAMP2431T.TCT RoHS and REACH compliant?
Yes. RCLAMP2431T.TCT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Its molding compound meets UL 94V-0 flammability rating, and lead finish is matte tin.
RCLAMP2431T.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 100W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 0.35pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
RCLAMP2431T.TCT FAQ
1.How can I place an order for RCLAMP2431T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP2431T.TCT 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 RCLAMP2431T.TCT reliable?
The price and inventory of RCLAMP2431T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP2431T.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP2431T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP2431T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP2431T.TCT?
RCLAMP2431T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP2431T.TCT 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 RCLAMP2431T.TCT?
For technical support, including RCLAMP2431T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP2431T.TCT requirements.
6.How does Aetrix verify that RCLAMP2431T.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP2431T.TCT 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 RCLAMP2431T.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP2431T.TCT?
All RCLAMP2431T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP2431T.TCT, 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 RCLAMP2431T.TCT part is unused and in its original packaging.
Return procedure for RCLAMP2431T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP2431T.TCT Tags
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