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Semtech Corporation RCLAMP2431TQTCT
- Part No.:
- RCLAMP2431TQTCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP2431TQTCT.pdf
- Description:
- TVS DIODE 24VWM 50VC SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:13,424
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Product details
Overview
RCLAMP2431TQTCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 24V-rated I/O or power lines in USB Type-C, USB PD, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 24–40A, <20mΩ dynamic resistance, and 175pF junction capacitance in a DFN 1.6×1.6×0.55mm package.
For engineers reviewing the RCLAMP2431TQTCT datasheet, pinout, applications, or equivalent options, key selection criteria include its constant clamping voltage across temperature and current, FET-based shunt architecture, low dynamic resistance, 24V working voltage compliance, and suitability for load switch input protection and high-voltage USB PD bus lines.
Technical Context
RCLAMP2431TQTCT uses a surge-rated MOSFET as the primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V across 24–40A and −40°C to +125°C-due to decreasing RDS(on) under surge conditions.
The device features three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) to maximize surge current handling and minimize parasitic inductance. Its solid-state architecture eliminates junction heating limitations, enabling stable performance where thermal derating degrades standard TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24 V - Matches nominal USB PD bus voltage (up to 20V) with 4V margin for transients and tolerances. |
| Clamping Voltage | 27.5–28 V at 24–40A - Remains stable across full rated surge range, protecting downstream ICs with tight VMAX margins. |
| 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 industrial ESD requirements without external staging. |
| Dynamic Resistance | 20 mΩ - Enables low-voltage drop during conduction, minimizing energy dissipation in the device and reducing thermal stress. |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - Compatible with medium-speed data/power lines (e.g., VBUS, CC, SBU); not for SuperSpeed lanes. |
| Operating Temperature | −40°C to +125°C - Fully specified performance across extended industrial and automotive ambient ranges. |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Low-inductance ground return path; all three pins must be connected to maximize surge current capability and minimize voltage overshoot. |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBUS); shared connection ensures uniform current sharing and optimal clamping response. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Replaces traditional pn-junction TVS with a low-RDS(on) MOSFET, enabling flat clamping voltage independent of surge magnitude or temperature. |
| Constant clamping over current range | 27.5–28 V clamping maintained from 24A to 40A (8/20μs), eliminating design margin inflation required for linear TVS devices. |
| Stable clamping over temperature | Clamping voltage variation <0.5 V from −40°C to +125°C - enables reliable protection in uncontrolled thermal environments. |
| High-energy surge rating | 1120 W peak pulse power (8/20μs) - supports robust protection against lightning-induced surges and system-level EOS events. |
| Low leakage & high EFT immunity | 600 nA max reverse leakage at 24 V; ±4 kV EFT (IEC 61000-4-4) - ensures signal integrity and long-term reliability in noisy industrial settings. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the VBUS line in USB Type-C connectors supporting up to 20V/5A PD profiles against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, shunting EOS energy to ground before it reaches the PD controller or load switch. Use Value: Maintains clamping below 28 V across full temperature and current range, preventing damage to 30 V-rated PD controllers and avoiding overdesign with higher IPP TVS devices. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., HS2950P) used in remote meters, robotics, and IoT edge nodes exposed to field-installed wiring surges. IC Role / Device Role / Timing Role: Primary front-end EOS protector on VIN rail, limiting voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Prevents premature failure of load switches during 1 kV/42 Ω IEC 61000-4-5 surges by clamping to ≤28 V-well below typical 30–40 V FET breakdown thresholds. |
| High-Voltage Industrial I/O Protection | USB-C CC/SBU Line Protection (24V Variant) |
|
Use Scenario: Securing 24V auxiliary power or control lines in programmable logic controllers (PLCs), HMI panels, and factory automation equipment interfacing with external sensors or actuators. IC Role / Device Role / Timing Role: Solid-state transient suppressor replacing legacy MOVs or TVS arrays on 24V DC rails, providing faster response and no wear-out mechanism. Use Value: Delivers repeatable ±30 kV ESD and 40 A surge protection without degradation, supporting >100,000 surge events per device lifetime in maintenance-critical systems. |
Use Scenario: Protecting USB-C Configuration Channel (CC) and Sideband Use (SBU) lines where short-to-VBUS faults may expose protection devices to 20–24 V DC bias. IC Role / Device Role / Timing Role: Secondary protection device selected for 24 V standoff to avoid self-damage during sustained VBUS shorts, complementing lower-voltage TVS on DP/DM. Use Value: Ensures survivability during fault conditions while maintaining low capacitance (175 pF) compatible with CC/SBU signaling speeds (<1 MHz). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | 22 V working voltage, 27.5–28 V clamping, same DFN 1.6×1.6mm package and pinout. | Optimized for 22 V systems (e.g., legacy USB PD 3.0, 20 V nominal); slightly lower standoff than RCLAMP2431TQTCT. | Select when system operating voltage is ≤22 V and tighter clamping margin is needed at lower voltages. |
| RCLAMP2531TQTCT | 25 V working voltage, 28.5–29 V clamping, identical footprint and pin configuration. | Suitable for 24–25 V industrial buses or future-proofed 24 V designs requiring extra margin above 24 V nominal. | Choose for new 24 V+ designs where long-term voltage drift or tolerance stack-up may exceed 24 V. |
Compared with TDS2211P and RCLAMP2531TQTCT, RCLAMP2431TQTCT provides optimal balance for 24 V systems: its 24 V VRWM aligns precisely with common USB PD 3.1 and industrial 24 V rails, while its 27.5–28 V clamping offers superior margin over 30 V-rated downstream ICs versus the 28.5–29 V clamping of the 25 V variant.
Availability
RCLAMP2431TQTCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and 24V I/O protection applications requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for RCLAMP2431TQTCT 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 solutions.
RCLAMP2431TQTCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 24V industrial, USB PD, and automotive-infotainment applications demanding stable clamping and surge endurance.
FAQ
What is the maximum continuous operating voltage for RCLAMP2431TQTCT?
RCLAMP2431TQTCT has a reverse stand-off voltage (VRWM) of 24 V, meaning it reliably blocks up to 24 V DC or RMS in normal operation without triggering. This makes it suitable for 24 V industrial buses and USB PD 3.1 VBUS lines, with built-in margin against ripple and tolerance variations. The device begins clamping only during transient overvoltage events exceeding its breakdown threshold.
How does RCLAMP2431TQTCT differ from standard TVS diodes in clamping behavior?
RCLAMP2431TQTCT uses a FET-based shunt architecture instead of a pn-junction, resulting in near-constant clamping voltage (27.5–28 V) across its full 24–40 A surge range and −40°C to +125°C temperature span. In contrast, standard TVS diodes exhibit linearly rising clamping (VC = VBR + IPP × RDYN), which can exceed safe limits at high current or temperature-making RCLAMP2431TQTCT more predictable and robust in demanding applications.
Can RCLAMP2431TQTCT be used on USB SuperSpeed (SS) differential pairs?
No, RCLAMP2431TQTCT is not suitable for USB SuperSpeed TX/RX differential pairs due to its 175 pF junction capacitance, which would severely degrade signal integrity at 5–10 Gbps. For SS lanes, Semtech recommends ultra-low-capacitance devices like RClamp3371ZC (<0.25 pF). RCLAMP2431TQTCT is intended for VBUS, CC, SBU, and other medium-speed or power-related lines where capacitance is less critical.
What is the recommended PCB layout for optimal surge performance of RCLAMP2431TQTCT?
Place RCLAMP2431TQTCT as close as possible to the protected connector (e.g., USB-C receptacle). Connect all three IN pins (4–6) via a single low-inductance trace to the protected line, and tie all three GND pins (1–3) directly to a solid ground plane using multiple vias. Avoid stubs or splits in the ground path-this minimizes parasitic inductance and ensures the full 40 A surge current is shunted effectively without voltage overshoot.
Is RCLAMP2431TQTCT RoHS and halogen-free compliant?
Yes, RCLAMP2431TQTCT is fully RoHS and WEEE compliant, lead-free, and halogen-free. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is matte tin. These compliance attributes are verified per Semtech's official datasheet Rev 2.5 and supported by material declarations available through authorized distributors.
RCLAMP2431TQTCT 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:
- -
- Capacitance @ Frequency:
- 0.35pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
RCLAMP2431TQTCT FAQ
1.How can I place an order for RCLAMP2431TQTCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP2431TQTCT 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 RCLAMP2431TQTCT reliable?
The price and inventory of RCLAMP2431TQTCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP2431TQTCT is usually 5 days.
3.What payment methods are accepted for RCLAMP2431TQTCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP2431TQTCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP2431TQTCT?
RCLAMP2431TQTCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP2431TQTCT 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 RCLAMP2431TQTCT?
For technical support, including RCLAMP2431TQTCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP2431TQTCT requirements.
6.How does Aetrix verify that RCLAMP2431TQTCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP2431TQTCT 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 RCLAMP2431TQTCT meets industry standards.
7.What is the process for return or replacement of RCLAMP2431TQTCT?
All RCLAMP2431TQTCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP2431TQTCT, 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 RCLAMP2431TQTCT part is unused and in its original packaging.
Return procedure for RCLAMP2431TQTCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP2431TQTCT Tags
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