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Semtech Corporation RCLAMP3354S.TCT
- Part No.:
- RCLAMP3354S.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SC-74A, SOT-753
- Datasheet:
-
RCLAMP3354S.TCT.pdf
- Description:
- TVS DIODE 3.3VWM 16VC SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:41,245
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Product details
Overview
RCLAMP3354S.TCT 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 24–40A, 20mΩ dynamic resistance, and 175pF junction capacitance at 22V.
For engineers reviewing the RCLAMP3354S.TCT datasheet, pinout, applications, or equivalent options, this device delivers stable clamping across temperature (−40°C to +125°C) and current range-critical for USB PD, Type-C bus protection, and industrial load switch input safeguarding where conventional TVS diodes exhibit rising VC with IPP or temperature.
Technical Context
RCLAMP3354S.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when EOS voltage exceeds breakdown. Unlike standard TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge, not fixed RDYN.
The device operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V at 1mA, and reverse leakage ≤600nA at VRWM. Its functional architecture enables low-voltage overshoot control in high-slew-rate environments-key for protecting sensitive USB PD controllers and e-fuse inputs against lightning surges and contact ESD.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave) - stays below 29V across full rated surge range, enabling robust protection of 30V-tolerant ICs. |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 requirements for consumer and industrial interfaces. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Line Surge Class 3 (±1kV, RS=42Ω) for unsymmetrical lines. |
| Dynamic Resistance | 20mΩ - ensures minimal IR drop during surge conduction, preserving low clamping voltage stability. |
| Junction Capacitance | 175pF at 22V, 1MHz - suitable for DC/low-speed power line protection; not intended for high-speed data lanes. |
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 |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS or power rail); parallel connection of all three pins ensures uniform current sharing and optimal thermal distribution during 40A transients. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Clamping Architecture | Clamping voltage varies <0.5V from 24A to 40A - eliminates design margin inflation needed with conventional TVS diodes whose VC rises linearly with IPP. |
| Temperature-Stable Protection | Clamping remains ~27.6V from −40°C to +125°C - enables reliable operation in automotive under-hood or industrial ambient conditions without derating. |
| Low Dynamic Resistance | 20mΩ measured between 1A–40A (8/20μs) - minimizes voltage overshoot during fast-rising transients and reduces localized heating. |
| High-Energy Surge Handling | 1120W peak pulse power (8/20μs) - supports repeated surge events in metering, robotics, and remote IoT nodes exposed to indirect lightning. |
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, exposed to ESD and system-level surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector entry point to clamp overvoltage before reaching PD controller and power switches. Use Value: Maintains clamping at ≤28V across temperature and current range-prevents latch-up or gate oxide damage in 30V-rated PD controllers where traditional TVS may exceed 35V at 125°C. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, PLC I/O modules, and robotic power stages. IC Role / Device Role / Timing Role: Primary front-end EOS protector shunting surge energy away from the load switch's internal FET drain-source path. Use Value: Limits clamping to 28V at 40A, staying well below typical 30–40V FET breakdown thresholds-avoids destructive avalanche failure during 1kV line surges. |
| IoT Edge Node Power Rail Protection | Storage Device 24V Backup Supply Protection |
Use Scenario: Securing 22V auxiliary rails in battery-backed wireless sensors and edge gateways subject to EFT bursts and connector hot-plug transients. IC Role / Device Role / Timing Role: Solid-state shunt protector replacing Zener-based crowbar circuits, offering faster response and no hold-off timing constraints. Use Value: Withstands ±4kV EFT (IEC 61000-4-4) and maintains sub-29V clamping-ensures uninterrupted MCU operation during 5kHz burst noise on power lines. |
Use Scenario: Protecting 24V backup supplies in NVMe SSD enclosures and enterprise storage controllers against accidental overvoltage and surge coupling. IC Role / Device Role / Timing Role: Standby-mode protector on non-switched DC rails, providing fail-safe clamping without leakage-induced standby current penalty. Use Value: Delivers only 600nA max reverse leakage at 22V-preserves battery life in always-on storage subsystems while delivering 40A surge capacity. |
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 1.6×1.6mm package, identical pinout (GND on 1–3, IN on 4–6), but marked "T22" and shipped in 7″ reel (3,000 pcs). | Same use cases: USB PD, load switch, industrial 22V rail protection. Fully interchangeable in layout and schematic. | Select TDS2211P.C if sourcing from Semtech's standard distribution channel; RCLAMP3354S.TCT is functionally identical with alternate marking/reel packaging. |
| SMAJ22A | Standard unidirectional TVS diode, 22V VRWM, 35.5V VC @ 12.3A (8/20μs), 500W PPPK, DO-214AC package (larger, 4.5×3.2mm). | Limited to lower-energy surges; VC rises significantly above 28V at >15A and increases with temperature-less suitable for 40A or high-temp industrial use. | Choose SMAJ22A only for cost-sensitive, low-surge, space-tolerant designs where clamping stability and 40A rating are not required. |
Compared with TDS2211P.C, RCLAMP3354S.TCT offers identical performance and footprint but differs only in date-code marking and tape-and-reel configuration; versus SMAJ22A, RCLAMP3354S.TCT provides 2.3× higher peak power, 3.3× higher IPP, and thermally stable clamping-making it superior for modern high-power USB and industrial interfaces.
Availability
RCLAMP3354S.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT edge node power rails requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for RCLAMP3354S.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 high-performance analog and mixed-signal semiconductors for precision protection, signal integrity, and power management.
RCLAMP3354S.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-energy, temperature-critical applications where stable clamping and low dynamic resistance are mandatory.
FAQ
What is the maximum operating temperature for RCLAMP3354S.TCT?
RCLAMP3354S.TCT is rated for continuous operation from −40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range-measured at 27.6V at 40A from −40°C to +125°C-making it suitable for under-hood automotive modules and industrial control cabinets without thermal derating.
Does RCLAMP3354S.TCT require external bias or control signals?
No, RCLAMP3354S.TCT is a fully passive, self-triggering device. It contains an integrated precision trigger circuit and surge-rated FET; no external voltage, enable pin, or control logic is needed. It activates automatically when transient voltage exceeds its breakdown threshold (~25–27.9V), making it drop-in compatible with existing TVS placements.
Can RCLAMP3354S.TCT protect high-speed data lines like USB SS or PCIe?
No, RCLAMP3354S.TCT is not suitable for high-speed data lines. With 175pF junction capacitance at 22V, it would severely degrade signal integrity on superspeed lanes. For USB SS, DP/DM, or PCIe, Semtech recommends low-capacitance devices such as RClamp3371ZC (<0.25pF); RCLAMP3354S.TCT is intended exclusively for DC power or low-speed I/O lines.
How does RCLAMP3354S.TCT compare to standard TVS diodes in surge response time?
RCLAMP3354S.TCT triggers within nanoseconds-comparable to silicon TVS diodes-but achieves superior performance through architecture, not speed alone. Its FET-based shunt delivers lower dynamic resistance (20mΩ vs. typical 0.5–2Ω for TVS), resulting in flatter clamping and less voltage overshoot during the critical first 100ns of a fast-rising surge event.
Is RCLAMP3354S.TCT RoHS and REACH compliant?
Yes, RCLAMP3354S.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 100% matte tin-verified per Semtech's material declarations and test reports.
RCLAMP3354S.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SC-74A, SOT-753
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 4
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.5V
- Voltage - Clamping (Max) @ Ipp:
- 16V
- Current - Peak Pulse (10/1000µs):
- 25A (8/20µs)
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- Yes
- Applications:
- Ethernet
- Capacitance @ Frequency:
- 3.8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
RCLAMP3354S.TCT FAQ
1.How can I place an order for RCLAMP3354S.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3354S.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 RCLAMP3354S.TCT reliable?
The price and inventory of RCLAMP3354S.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3354S.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP3354S.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3354S.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3354S.TCT?
RCLAMP3354S.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3354S.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 RCLAMP3354S.TCT?
For technical support, including RCLAMP3354S.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3354S.TCT requirements.
6.How does Aetrix verify that RCLAMP3354S.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3354S.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 RCLAMP3354S.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP3354S.TCT?
All RCLAMP3354S.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3354S.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 RCLAMP3354S.TCT part is unused and in its original packaging.
Return procedure for RCLAMP3354S.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP3354S.TCT Tags
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