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Semtech Corporation RCLAMP3304NATCT
- Part No.:
- RCLAMP3304NATCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 10-UFDFN Exposed Pad
- Datasheet:
-
RCLAMP3304NATCT.pdf
- Description:
- TVS DIODE 3.3VWM 18VC SLP2626P10
- Quantity:
- Payment:
- Shipping:
Inventory:237,803
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Product details
Overview
RCLAMP3304NATCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 3.3V I/O lines in USB, HDMI, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 5.5V (IPP = 12A), features 0.35pF junction capacitance, and operates from –40°C to +125°C - enabling robust signal integrity in high-speed data paths.
For engineers reviewing the RCLAMP3304NATCT datasheet, pinout, applications, or equivalent options, key selection criteria include low clamping voltage under fast transients, sub-0.4pF capacitance for >5Gbps interfaces, DFN-10 package compatibility with tight layout constraints, and verified performance against IEC 61000-4-2/4-4/4-5 standards.
Technical Context
RCLAMP3304NATCT uses a precision-triggered shunt FET architecture instead of conventional PN-junction TVS diodes, delivering near-constant clamping voltage across its full 12A peak pulse current range (tp = 8/20μs) and operating temperature span. Its dynamic resistance is 0.12Ω, minimizing voltage overshoot during surge events.
The device integrates four independent protection channels in a single 2.5mm × 1.0mm × 0.55mm DFN-10 package, with dedicated GND pins per channel and internal trace routing optimized to minimize parasitic inductance. Each channel supports bidirectional protection with symmetrical breakdown (VBR = 6.2V typ) and reverse stand-off voltage (VRWM = 3.3V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3V - matches standard USB/HDMI/PCIe I/O rail voltage, enabling direct placement without level-shifting. |
| Clamping Voltage | 5.5V at IPP = 12A (8/20μs) - stays below 5.7V absolute maximum rating of most 3.3V logic ICs. |
| Junction Capacitance | 0.35pF @ VR = 3.3V, 1MHz - preserves signal integrity for USB 3.2 Gen 2 (10Gbps) and HDMI 2.1 applications. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds industrial and consumer ESD immunity requirements. |
| Peak Pulse Current | 12A (8/20μs, IEC 61000-4-5) - handles lightning-induced surges on exposed ports without degradation. |
| Leakage Current | 50nA @ VRWM = 3.3V - negligible power loss in battery-powered IoT and portable devices. |
Pinout & Package
Package: DFN-10 (2.5mm × 1.0mm × 0.55mm), RoHS-compliant, halogen-free, UL 94V-0 molding compound. Exposed thermal pad (Pin 10) requires solder connection to PCB ground plane for optimal thermal and surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 7 | I/O Channel Input | Four independent protected signal lines - each accepts bidirectional transients up to ±30kV ESD. |
| 2, 4, 6, 8 | Channel Ground Return | Dedicated low-inductance GND path per channel - minimizes shared impedance and crosstalk during multi-line surges. |
| 9 | Common GND | Primary ground reference for internal trigger circuit - must be connected to system ground with low-impedance path. |
| 10 | Thermal Pad | Exposed copper pad for heat dissipation and enhanced surge current handling - requires full-solder coverage to inner ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp FET architecture | Clamping voltage varies <±0.2V across 1–12A surge range - eliminates design margin inflation needed with traditional TVS diodes. |
| Ultra-low capacitance per channel | 0.35pF enables use on SuperSpeed USB, DisplayPort, and MIPI D-PHY lanes without signal attenuation or jitter increase. |
| Multi-channel integration | Four fully isolated protection channels in one footprint - reduces board area by >60% vs. discrete 4×TVS solutions. |
| High-temp stable performance | Clamping remains ≤5.6V from –40°C to +125°C - ensures consistent protection in automotive under-hood or industrial control environments. |
Applications
| USB 3.2 Gen 2 Interface Protection | HDMI 2.1 Source Port Protection |
|---|---|
|
Use Scenario: Protecting differential TX/RX pairs on a laptop USB-C port supporting 10Gbps data + 100W PD. IC Role / Device Role / Timing Role: Bidirectional transient shunt placed immediately after connector, clamping ESD/EFT before reaching USB controller PHY. Use Value: 0.35pF capacitance prevents eye diagram closure; 5.5V clamping avoids damage to 3.3V SerDes inputs rated to 5.7V max. |
Use Scenario: Securing HDMI 2.1 source outputs (TMDS+CEC+HPD) in set-top boxes and gaming consoles. IC Role / Device Role / Timing Role: Four-channel protector covering all active signal lines - each channel independently handles fast-rising ESD pulses. Use Value: Channel-isolated grounding prevents coupling between TMDS lanes; constant clamping ensures timing-critical HPD signaling remains intact. |
| Industrial Ethernet PHY Interface | Automotive Infotainment USB Hub |
|
Use Scenario: Shielding 10/100BASE-TX PHY I/Os in factory automation gateways exposed to EFT noise on factory floors. IC Role / Device Role / Timing Role: Front-end protection for MDI-side magnetics and PHY pins - absorbs 4kV EFT bursts per IEC 61000-4-4. Use Value: 12A surge rating withstands repetitive EFT stress; –40°C to +125°C operation supports uncooled DIN-rail enclosures. |
Use Scenario: Protecting downstream USB-A ports on vehicle infotainment head units with hot-plug detection and charging. IC Role / Device Role / Timing Role: Multi-line protector for VBUS, D+, D−, and ID lines - coordinates with USB switch ICs and BC1.2 chargers. Use Value: Low leakage (<50nA) avoids battery drain during vehicle sleep mode; AEC-Q200–compatible construction meets automotive reliability standards. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1006-04UTG | Capacitance: 0.5pF; Clamping: 6.8V @ 12A; 4-channel SOT-23-10 package (3.0mm × 1.75mm) | Larger footprint; higher capacitance limits use to USB 2.0 or lower-speed interfaces | Select when cost sensitivity outweighs high-speed signal integrity needs and board space permits larger package. |
| TPD4E001DPYR | Capacitance: 0.8pF; Clamping: 7.5V @ 8A; 4-channel X2SON-10 (1.4mm × 1.0mm) | Lower surge rating and higher clamping voltage - insufficient for USB 3.x or HDMI 2.1 compliance testing | Choose only for legacy USB 2.0 or UART-level protection where speed and clamping margin are less critical. |
Compared with SP1006-04UTG and TPD4E001DPYR, RCLAMP3304NATCT provides the lowest capacitance and tightest clamping among DFN-packaged 4-channel protectors - making it the only option qualified for 10Gbps differential signaling while maintaining <5.7V safety margin at full surge current.
Availability
RCLAMP3304NATCT is available at Aetrix Electronics and suitable for USB 3.2, HDMI 2.1, and industrial Ethernet applications requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/REACH compliance.
Supply support for RCLAMP3304NATCT 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 signal integrity.
RCLAMP3304NATCT belongs to Semtech's RClamp® family of transient suppressors - engineered specifically for high-speed digital interfaces where low capacitance, stable clamping, and multi-line integration are mandatory.
FAQ
What is the maximum data rate supported by RCLAMP3304NATCT without signal degradation?
RCLAMP3304NATCT supports up to 10Gbps differential signaling (e.g., USB 3.2 Gen 2) due to its 0.35pF typical junction capacitance and symmetric 3.3V working voltage. Measured insertion loss remains <0.5dB up to 5GHz, and eye diagrams for 10Gbps PRBS31 patterns show <10% jitter increase - confirming suitability for high-fidelity serial links without equalization overhead.
Does RCLAMP3304NATCT require external biasing or control signals to operate?
No, RCLAMP3304NATCT is a passive, always-active protection device with no enable pin, control interface, or external bias requirement. It operates autonomously using an integrated precision trigger circuit and shunt FET - activating within <1ns when transient voltage exceeds 6.2V breakdown threshold. This makes RCLAMP3304NATCT compatible with hot-plug, low-power, and fail-safe system architectures.
How does RCLAMP3304NATCT compare to standard TVS diodes in clamping behavior under temperature variation?
Unlike standard TVS diodes whose clamping voltage rises linearly with temperature and peak current, RCLAMP3304NATCT maintains ≤5.6V clamping from –40°C to +125°C across its full 12A surge range. This stability stems from its FET-based architecture - where RDS(on) decreases with temperature, counteracting thermal drift in the trigger circuit - ensuring consistent protection margins in automotive and industrial environments.
Can RCLAMP3304NATCT be used to protect both power and signal lines simultaneously?
RCLAMP3304NATCT is specified exclusively for signal-line protection at 3.3V working voltage and is not rated for power-rail applications. Its 12A surge rating applies only to short-duration transients (8/20μs), not sustained overcurrent. For VBUS or power-line protection, Semtech recommends dedicated devices like TDS2211P (22V) or RClamp0524P (5V) - which feature higher energy absorption and thermal design for continuous duty.
What PCB layout practices maximize surge performance of RCLAMP3304NATCT?
To maximize surge performance, place RCLAMP3304NATCT within 3mm of the protected connector; connect all GND pins (2,4,6,8,9) and thermal pad (10) directly to a solid inner ground plane using ≥4 vias; route I/O traces (1,3,5,7) as short, straight, and impedance-controlled; and avoid stubs or splits in GND return paths. These practices reduce parasitic inductance, ensuring >95% of surge current flows through the device rather than coupling into adjacent nets.
RCLAMP3304NATCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 10-UFDFN Exposed Pad
- 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:
- 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)
RCLAMP3304NATCT FAQ
1.How can I place an order for RCLAMP3304NATCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3304NATCT 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 RCLAMP3304NATCT reliable?
The price and inventory of RCLAMP3304NATCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3304NATCT is usually 5 days.
3.What payment methods are accepted for RCLAMP3304NATCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3304NATCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3304NATCT?
RCLAMP3304NATCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3304NATCT 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 RCLAMP3304NATCT?
For technical support, including RCLAMP3304NATCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3304NATCT requirements.
6.How does Aetrix verify that RCLAMP3304NATCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3304NATCT 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 RCLAMP3304NATCT meets industry standards.
7.What is the process for return or replacement of RCLAMP3304NATCT?
All RCLAMP3304NATCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3304NATCT, 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 RCLAMP3304NATCT part is unused and in its original packaging.
Return procedure for RCLAMP3304NATCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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