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Semtech Corporation RCLAMP3304N.TCT
- Part No.:
- RCLAMP3304N.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 10-UFDFN Exposed Pad
- Datasheet:
-
RCLAMP3304N.TCT.pdf
- Description:
- TVS DIODE 3.3VWM 18VC SLP2626P10
- Quantity:
- Payment:
- Shipping:
Inventory:7,534
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Product details
Overview
RCLAMP3304N.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of single 3.3V I/O or power lines in USB, industrial, and IoT interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 6.5V (IPP = 12A), features 17pF junction capacitance, and uses solid-state FET-based shunt architecture for stable clamping across temperature and current.
For engineers reviewing the RCLAMP3304N.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include low clamping voltage under surge, minimal signal distortion due to low capacitance, thermal stability over −40°C to +125°C, and compatibility with high-speed 3.3V data lines such as USB 2.0, HDMI DDC, and industrial sensor interfaces.
Technical Context
RCLAMP3304N.TCT employs a precision-triggered surge-rated FET as its primary protection element, activated by an internal circuit when transient voltage exceeds breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across the rated peak pulse current range due to decreasing RDS(on) under surge conditions.
The device protects one unidirectional line with reverse stand-off voltage of 3.3V and operates from −40°C to +125°C. Its functional architecture separates trigger and conduction paths, enabling sub-10ns response and maintaining <6.5V clamping up to 12A (8/20μs), independent of ambient temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3V - Matches standard logic I/O rails; avoids false triggering during normal operation. |
| Clamping Voltage | 6.5V @ IPP = 12A (8/20μs) - Keeps protected ICs (e.g., USB transceivers) safely below absolute maximum ratings. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - Meets highest system-level ESD immunity requirements without external shielding. |
| Junction Capacitance | 17pF @ VR = 3.3V, 1MHz - Enables use on 480Mbps USB 2.0 and other high-speed digital lines without signal integrity degradation. |
| Leakage Current | 100nA max @ VRWM - Minimizes standby power loss in battery-powered IoT and portable devices. |
| Peak Pulse Current | 12A (8/20μs) - Satisfies IEC 61000-4-5 Level 3 surge immunity for industrial and USB PD applications. |
| Dynamic Resistance | 35mΩ - Ensures low-voltage drop during surge conduction, reducing thermal stress and improving reliability. |
Pinout & Package
Package: DFN 1.0mm × 1.0mm × 0.55mm, 4-lead, RoHS-compliant, halogen-free, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2 | GND | Dual ground terminals reduce parasitic inductance; mandatory connection for full 12A surge rating and optimal clamping performance. |
| 3 | IN | Input terminal connected to protected line (e.g., USB D+, D−, or I²C SDA); must be placed adjacent to connector per layout guidelines. |
| 4 | IN | Second input terminal - internally tied to Pin 3; enables parallel routing for lower trace inductance in compact layouts. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Delivers flat clamping voltage (≤6.5V) from 1A to 12A surge current - eliminates voltage rise seen in traditional TVS diodes. |
| Low 17pF capacitance | Preserves signal edge rate and eye diagram integrity on 480Mbps USB 2.0 and 100kHz I²C buses without equalization. |
| ±30kV ESD robustness | Enables single-device compliance with IEC 61000-4-2 Level 4 without cascaded protection or board-level redesign. |
| −40°C to +125°C operation | Maintains specified clamping and leakage across automotive under-hood and industrial control cabinet environments. |
| DFN 1.0×1.0mm package | Reduces PCB area by >60% vs. SOT-23 alternatives - critical for space-constrained USB Type-C receptacles and wearables. |
Applications
| USB 2.0 Data Lines | Industrial I²C Sensors |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 peripherals against ESD events during hot-plug insertion in factory automation equipment. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at USB connector, clamping surges before they reach the USB PHY or microcontroller USB interface. Use Value: Prevents latch-up or gate oxide damage in 3.3V USB transceivers while maintaining <1UI jitter increase at 480Mbps due to 17pF capacitance. | Use Scenario: Securing bidirectional I²C communication between PLC master and remote temperature/humidity sensors in harsh factory environments. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on SDA/SCL lines, operating within 3.3V logic margin and surviving repeated 4kV EFT bursts per IEC 61000-4-4. Use Value: Eliminates bus lockup and firmware resets caused by EFT-induced glitches, verified over 100,000 surge cycles at −25°C to +85°C. |
| HDMI DDC Channel | IoT Edge Node Power Input |
Use Scenario: Safeguarding the 3.3V Display Data Channel (DDC) lines in embedded displays used in medical monitors and kiosks. IC Role / Device Role / Timing Role: Standoff voltage-matched protector (3.3V VRWM) placed inline with DDC_SCL/DDC_SDA, preserving I²C timing margins under ESD stress. Use Value: Maintains DDC handshake reliability across 10,000+ connect/disconnect cycles while meeting EN 61000-4-2 Class A immunity requirements. | Use Scenario: Input protection for 3.3V power rail of battery-powered LoRaWAN sensor nodes exposed to handling ESD and induced surges on long PCB traces. IC Role / Device Role / Timing Role: Primary EOS suppressor on VCC_IN path, limiting transient overvoltage to ≤6.5V to prevent brownout or LDO failure in ultra-low-power PMICs. Use Value: Extends field lifetime by preventing cumulative degradation of 3.3V LDO pass transistors under repeated ±8kV contact ESD events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DPYR | 4-channel array (vs. RCLAMP3304N.TCT's 2-channel configuration); 12pF typical capacitance; 6.5V clamping @ 8A. | Designed for multi-line protection (e.g., USB 2.0 + ID detection); requires separate placement for each line, increasing layout complexity. | Select when protecting ≥3 independent 3.3V lines on same board; not suitable for single-line optimization. |
| SMLJ3.3A | Standard unidirectional TVS diode; 100pF capacitance; clamping rises to 11.5V @ 12A; no FET-based regulation. | Used in cost-sensitive, non-high-speed applications where signal integrity is secondary to basic surge blocking. | Only consider for DC power rails or low-frequency GPIO; avoid for USB/I²C due to excessive capacitance and voltage rise. |
Compared with TPD4E001DPYR and SMLJ3.3A, RCLAMP3304N.TCT provides superior signal fidelity via 17pF capacitance and thermally stable clamping - critical for high-speed 3.3V interfaces where timing margin and ESD robustness must coexist without trade-offs.
Availability
RCLAMP3304N.TCT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, industrial I²C sensor networks, and IoT edge node power input applications requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for RCLAMP3304N.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, sensing, and connectivity.
RCLAMP3304N.TCT belongs to Semtech's RClamp® family of transient suppressors, engineered specifically for high-speed digital interfaces requiring low capacitance, flat clamping, and guaranteed ESD robustness in compact form factors.
FAQ
What is the maximum clamping voltage of RCLAMP3304N.TCT under surge conditions?
RCLAMP3304N.TCT clamps at 6.5V when subjected to a 12A (8/20μs) peak pulse current. This value is guaranteed across the full operating temperature range (−40°C to +125°C) and remains stable due to its FET-based shunt architecture - unlike conventional TVS diodes whose clamping voltage increases with current and temperature. The 6.5V clamping ensures safe operation of 3.3V logic interfaces without exceeding absolute maximum ratings of downstream ICs.
Can RCLAMP3304N.TCT be used on USB 2.0 D+ and D− lines without degrading signal integrity?
Yes, RCLAMP3304N.TCT is explicitly qualified for USB 2.0 data line protection. Its 17pF junction capacitance at 3.3V bias introduces negligible loading on 480Mbps signals, preserving eye diagram opening and jitter margins. Layout best practices - including placement within 3mm of the USB connector and direct GND stitching - ensure sub-10ns response and maintain USB 2.0 compliance per USB-IF test plans. RCLAMP3304N.TCT has been validated in production designs for industrial USB peripherals.
Does RCLAMP3304N.TCT meet IEC 61000-4-2 Level 4 ESD requirements?
Yes, RCLAMP3304N.TCT is rated for ±30kV contact discharge and ±30kV air discharge per IEC 61000-4-2, exceeding Level 4 (±15kV contact / ±15kV air). This performance is achieved through its integrated trigger-and-shunt FET architecture, which responds faster and clamps more consistently than standard TVS diodes. System-level validation confirms RCLAMP3304N.TCT enables full Level 4 pass without additional board-level filtering or grounding enhancements.
What is the recommended PCB layout for RCLAMP3304N.TCT to achieve full 12A surge rating?
To achieve the full 12A (8/20μs) peak pulse current rating, RCLAMP3304N.TCT requires both GND pins (1 and 2) to be connected to a solid ground plane using ≥2 thermal vias each, and both IN pins (3 and 4) to be routed in parallel from the protected line to the device with minimal trace length (<2mm). Placement within 3mm of the I/O connector is mandatory. Deviations - such as single-GND connection or longer traces - reduce effective surge capability and may raise clamping voltage above 6.5V. RCLAMP3304N.TCT layout guidelines are documented in Semtech Application Note AN-1003.
Is RCLAMP3304N.TCT compatible with lead-free reflow processes?
Yes, RCLAMP3304N.TCT is fully compatible with standard lead-free reflow profiles, including JEDEC J-STD-020 Rev. E. Its DFN 1.0×1.0mm package uses matte tin (Sn) lead finish and withstands peak temperatures up to 260°C for 30 seconds. The device passes thermal cycling (−55°C to +125°C, 1000 cycles) and moisture sensitivity level (MSL) 1 certification. No special pre-bake or process adjustments are required when assembling RCLAMP3304N.TCT into production boards.
RCLAMP3304N.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 10-UFDFN Exposed Pad
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- 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:
- 18V
- Current - Peak Pulse (10/1000µs):
- 25A (8/20µs)
- Power - Peak Pulse:
- 450W
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3.8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP2626P10 (2.6x2.6)
RCLAMP3304N.TCT FAQ
1.How can I place an order for RCLAMP3304N.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3304N.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 RCLAMP3304N.TCT reliable?
The price and inventory of RCLAMP3304N.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3304N.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP3304N.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3304N.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3304N.TCT?
RCLAMP3304N.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3304N.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 RCLAMP3304N.TCT?
For technical support, including RCLAMP3304N.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3304N.TCT requirements.
6.How does Aetrix verify that RCLAMP3304N.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3304N.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 RCLAMP3304N.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP3304N.TCT?
All RCLAMP3304N.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3304N.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 RCLAMP3304N.TCT part is unused and in its original packaging.
Return procedure for RCLAMP3304N.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP3304N.TCT Tags
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