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Semtech Corporation RCLAMP3311P.TNT
- Part No.:
- RCLAMP3311P.TNT
- Manufacturer:
- Semtech Corporation
- Category:
- Surge Suppression Ics
- Package:
- -
- Datasheet:
-
RCLAMP3311P.TNT.pdf
- Description:
- 1-LINE 3.3V 0.25PF DFN 1.6X1.0X0
- Quantity:
- Payment:
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Inventory:5,460
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Product details
Overview
RCLAMP3311P.TNT 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, and 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the RCLAMP3311P.TNT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance (20mΩ), DFN-6 package footprint compatibility, and compliance with IEC 61000-4-2/4-4/4-5 standards for robust system-level surge resilience.
Technical Context
RCLAMP3311P.TNT uses 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 threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
The device operates over –40°C to +125°C, maintains stable clamping across temperature, and delivers <20mΩ dynamic resistance measured between 1A and 40A (8/20μs). Its 175pF capacitance at 22V/1MHz and 130–600nA leakage support high-speed interface protection without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during worst-case surges. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity mandates for connector-facing protection. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for USB PD VBUS line protection without degrading power delivery signaling integrity. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm), Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize current handling and minimize parasitic inductance. |
| Pin 4, 5, 6 | IN | Protected line input (e.g., VBUS); parallel connection of all three pins ensures uniform current sharing and full 40A rating. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Clamping Voltage | 27.5–28V across 24–40A and –40°C to +125°C - eliminates thermal derating concerns and simplifies worst-case margin analysis. |
| FET-Based Shunt Architecture | Surge-rated MOSFET + precision trigger circuit - replaces fixed-RDYN TVS with active clamping, reducing voltage overshoot vs. conventional diodes. |
| High-Energy Surge Rating | 1120W peak pulse power (8/20μs) - supports repeated lightning-induced surges in industrial and IoT edge nodes. |
| Low-Leakage Protection | 130–600nA reverse leakage at 22V - prevents battery drain or bias shift in always-on power rails. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the VBUS line of USB Type-C connectors supporting up to 20V/5A PD negotiation against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at the connector, clamping transients before they reach the PD controller or load switch. Use Value: Maintains 27.5–28V clamping across temperature and current - avoids overvoltage damage to sensitive 22V-tolerant PD ICs where conventional TVS would exceed 35V at 125°C. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment exposed to 40A surge events. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage stress on the load switch's internal FET during IEC 61000-4-5 surges. Use Value: Prevents gate oxide rupture or avalanche failure in the load switch by holding clamping voltage ≤28V - enabling use of cost-optimized 30V-rated switches instead of 40V+ variants. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
Use Scenario: Securing 22V auxiliary power rails in battery-backed IoT gateways and cellular modems subjected to EFT bursts and contact ESD in harsh environments. IC Role / Device Role / Timing Role: Single-device solution for combined ESD (±30kV), EFT (±4kV), and surge (40A) immunity on shared power distribution networks. Use Value: Eliminates need for multi-stage protection stacks - reduces BOM count and PCB area while guaranteeing coordinated clamping behavior across all threat types. |
Use Scenario: Shielding 22V supply lines feeding NVMe SSD controllers or SAS expanders in enterprise storage enclosures from board-level EOS events during hot-swap or maintenance. IC Role / Device Role / Timing Role: High-reliability transient suppressor co-located with power entry points to prevent latch-up or burnout in storage controller ICs. Use Value: 175pF capacitance avoids signal distortion on adjacent high-speed traces, and 20mΩ dynamic resistance ensures minimal voltage rise during fast 8/20μs 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; differs only in marking code and reel packaging (TDS2211P.C vs. RCLAMP3311P.TNT). | Functionally identical - used interchangeably in Semtech reference designs for USB PD and load switch protection. | Select TDS2211P when sourcing from standard Semtech distribution channels; RCLAMP3311P.TNT is a tape-and-reel variant optimized for automated SMT assembly. |
| uClamp2411ZA | 24V working voltage, lower 24A IPP rating, higher 32V clamping at 24A, and smaller 0.65mm × 0.65mm DFN-2 package. | Targeted at CC/SBU lines in USB Type-C, not VBUS - insufficient for 40A surge handling or 22V bus protection. | Use uClamp2411ZA only for low-capacitance, low-current auxiliary signal lines; not a functional replacement for RCLAMP3311P.TNT on power rails. |
Compared with TDS2211P and uClamp2411ZA, RCLAMP3311P.TNT provides identical surge performance and package compatibility as TDS2211P but with optimized reel packaging for high-volume manufacturing, while uClamp2411ZA serves distinct low-power signal-line roles and cannot replace RCLAMP3311P.TNT in 22V/40A applications.
Availability
RCLAMP3311P.TNT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power bus protection requiring stable component supply, consistent DFN-6 footprint, and guaranteed IEC 61000-4-2/4-4/4-5 compliance.
Supply support for RCLAMP3311P.TNT 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 high-performance analog and mixed-signal ICs for precision sensing, protection, and connectivity.
RCLAMP3311P.TNT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes with FET-based active clamping for stable, temperature-invariant surge protection in high-reliability power and interface applications.
FAQ
What is the maximum operating temperature range for RCLAMP3311P.TNT?
RCLAMP3311P.TNT operates reliably from –40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range, with no derating required for peak pulse current or voltage - a key advantage over traditional TVS diodes whose clamping rises significantly at elevated temperatures. This makes RCLAMP3311P.TNT especially suitable for under-hood automotive modules and industrial control cabinets where thermal management is constrained.
How does RCLAMP3311P.TNT differ from standard TVS diodes in clamping behavior?
RCLAMP3311P.TNT uses a surge-rated FET and precision trigger circuit to achieve near-constant clamping voltage (27.5–28V) from 24A to 40A and across –40°C to +125°C. In contrast, standard TVS diodes exhibit linear clamping rise (VC = VBR + IPP × RDYN) due to fixed dynamic resistance, causing clamping to exceed 35V at high current or temperature. RCLAMP3311P.TNT's architecture eliminates this risk, ensuring predictable protection margins for 22V-rated ICs.
Can RCLAMP3311P.TNT be used on USB SuperSpeed differential pairs?
No - RCLAMP3311P.TNT is not suitable for USB SuperSpeed (TX/RX) or DisplayPort lines due to its 175pF junction capacitance, which would severely degrade signal integrity. For those high-speed data lanes, Semtech recommends ultra-low-capacitance devices like RClamp3371ZC (<0.25pF). RCLAMP3311P.TNT is specifically intended for VBUS, CC, SBU, or other lower-speed power/signal lines where capacitance is less critical.
What is the recommended PCB layout for optimal surge performance of RCLAMP3311P.TNT?
Place RCLAMP3311P.TNT as close as possible to the protected connector (e.g., USB Type-C receptacle). 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 multiple vias. Avoid thermal pads or isolated copper - energy is dissipated internally, and minimizing trace inductance is critical to achieving full 40A surge capability and sub-28V clamping.
Is RCLAMP3311P.TNT RoHS and REACH compliant?
Yes - RCLAMP3311P.TNT 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 the lead finish is lead-free matte tin. Compliance documentation, including test reports and declarations of conformity, is available through Semtech's official product portal and Aetrix Electronics' quality assurance team.
RCLAMP3311P.TNT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- -
- Technology:
- -
- Number of Circuits:
- -
- Applications:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
RCLAMP3311P.TNT FAQ
1.How can I place an order for RCLAMP3311P.TNT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3311P.TNT 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 RCLAMP3311P.TNT reliable?
The price and inventory of RCLAMP3311P.TNT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3311P.TNT is usually 5 days.
3.What payment methods are accepted for RCLAMP3311P.TNT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3311P.TNT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3311P.TNT?
RCLAMP3311P.TNT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3311P.TNT 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 RCLAMP3311P.TNT?
For technical support, including RCLAMP3311P.TNT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3311P.TNT requirements.
6.How does Aetrix verify that RCLAMP3311P.TNT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3311P.TNT 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 RCLAMP3311P.TNT meets industry standards.
7.What is the process for return or replacement of RCLAMP3311P.TNT?
All RCLAMP3311P.TNT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3311P.TNT, 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 RCLAMP3311P.TNT part is unused and in its original packaging.
Return procedure for RCLAMP3311P.TNT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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