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Semtech Corporation RCLAMP3371ZCTFT
- Part No.:
- RCLAMP3371ZCTFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
RCLAMP3371ZCTFT.pdf
- Description:
- 1-LINE 3.3V 0.25PF ESD SLP0603P2
- Quantity:
- Payment:
- Shipping:
Inventory:11,863
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Product details
Overview
RClamp3371ZCTFT from Semtech is a single-line, ultra-low-capacitance (0.25 pF max) ESD protection diode designed for high-speed differential data lines operating at 3.3 V. It delivers ±10 kV IEC 61000-4-2 contact ESD immunity, 9 A peak pulse current (8/20 µs), and clamps to 7 V at 9 A, enabling robust board-level protection in USB 3.2 Gen 2 and Thunderbolt interfaces.
For engineers reviewing the RClamp3371ZCTFT datasheet, pinout, applications, or equivalent options, this device is selected for signal integrity–critical high-speed line protection where sub-0.3 pF capacitance, low dynamic resistance (0.14 Ω), and minimal insertion loss are mandatory design requirements.
Technical Context
RClamp3371ZCTFT uses silicon-avalanche TVS technology with symmetrical bidirectional clamping and no degradation under repeated ESD stress. Its 0.25 pF junction capacitance and 0.14 Ω dynamic resistance ensure negligible impact on 10 Gb/s differential signaling integrity.
The device operates at 3.3 V reverse stand-off voltage with 5.5–10 V breakdown (1 mA), clamps to ≤7 V at 9 A (1.2/50 µs + 8/20 µs combo wave), and supports EFT immunity up to 40 A (5/50 ns). It is electrically symmetrical and intended for placement directly at connectors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance (CJ) | 0.25 pF max at 0 V, 1 MHz - preserves impedance matching and eye opening on 10 Gb/s links. |
| ESD Withstand (IEC 61000-4-2) | ±10 kV contact, ±17 kV air - meets industrial and consumer system-level ESD compliance. |
| Clamping Voltage (VC) | 7 V max at 9 A (1.2/50 µs + 8/20 µs) - limits transient overvoltage seen by downstream PHY. |
| Dynamic Resistance (RDYN) | 0.14 Ω (4–16 A TLP) - enables fast snapback and low-voltage clamping during fast transients. |
| Peak Pulse Current (IPP) | 9 A (8/20 µs) - supports EOS protection for short-duration surge events beyond ESD. |
| Reverse Stand-Off Voltage (VRWM) | 3.3 V - matches nominal supply of USB 3.2/Thunderbolt SuperSpeed+ receivers and transmitters. |
Pinout & Package
Package: DFN 0.60 × 0.30 × 0.25 mm, 2-lead, lead-free, RoHS/WEEE compliant. Electrically symmetrical - Pin 1 and Pin 2 are interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (symmetrical) | Connected to high-speed data line (e.g., TX+, RX−); no polarity assignment required. |
| Pin 2 | Anode/Cathode (symmetrical) | Connected to ground plane via shortest possible path; micro-via grounding recommended. |
Key Features
| Feature | Design Value |
|---|---|
| FemtoFarad capacitance | 0.25 pF max ensures <1 dB insertion loss up to 12 GHz - critical for USB 3.2 Gen 2 and HDMI 2.0 signal fidelity. |
| Low dynamic resistance | 0.14 Ω minimizes clamping voltage overshoot during sub-nanosecond ESD transients (TLP 0.2/100 ns). |
| Symmetrical bidirectional clamping | Enables single-device protection of AC-coupled differential pairs without polarity constraints or layout restrictions. |
| High EFT immunity | 40 A (5/50 ns) rating protects against burst noise in noisy industrial or automotive environments. |
Applications
| USB 3.2 Gen 2 Interface | HDMI 2.0 Differential Link |
|---|---|
Use Scenario: Protecting SuperSpeed+ TX/RX differential pairs on host or device PCBs exposed to connector-based ESD. IC Role / Device Role / Timing Role: Board-level TVS clamp placed between each data line and ground, adjacent to USB Type-C receptacle. Use Value: Maintains 10 Gb/s eye diagram integrity while limiting clamping voltage to ≤7 V - prevents PHY latch-up or damage. |
Use Scenario: Shielding TMDS clock and data channels in 4K@60Hz HDMI 2.0 sources or sinks. IC Role / Device Role / Timing Role: Single-line ESD suppressor on each of the three TMDS data pairs and one clock pair. Use Value: 0.25 pF capacitance avoids skew and jitter increase; ±10 kV contact rating satisfies IEC 61000-4-2 system-level test. |
| Thunderbolt 3 Channel | 10GbE SFP+ Interface |
Use Scenario: Securing bidirectional 20 Gbps differential lanes in Thunderbolt 3 controller-to-connector routing. IC Role / Device Role / Timing Role: One RClamp3371ZCTFT per lane (TX+/TX−/RX+/RX−), mounted on both top/bottom layers for Type-C flip support. Use Value: Low dynamic resistance (0.14 Ω) ensures sub-5 V clamping at 4 A TLP - preserves signal amplitude margin. |
Use Scenario: Protecting SFP+ electrical interface pins (e.g., TX, RX) on network switch or NIC PCBs. IC Role / Device Role / Timing Role: Line-to-ground ESD clamp on each high-speed serial channel before CDR or equalizer. Use Value: 9 A peak pulse rating handles EOS events from hot-plug or cable discharge; 0.25 pF avoids return loss degradation at 5 GHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP3222-02UTG (Littelfuse) | 0.35 pF max capacitance; 6.5 V clamping at 8 A; ±12 kV contact ESD rating. | Higher capacitance may degrade >8 Gb/s eye opening; better suited for USB 3.2 Gen 1 or PCIe Gen 3. | Select when higher ESD margin is prioritized over absolute minimum capacitance. |
| ESD5V3U2M-2/TR (Will Semiconductor) | 0.22 pF max; 6.8 V clamping at 8 A; ±15 kV air/±8 kV contact rating. | Lower contact ESD rating than RClamp3371ZCTFT; optimized for cost-sensitive USB 2.0/Type-C CC/SBU lines. | Choose for secondary protection zones where 10 kV contact immunity is not mandatory. |
Compared with SP3222-02UTG and ESD5V3U2M-2/TR, RClamp3371ZCTFT uniquely balances 0.25 pF capacitance, ±10 kV contact ESD, and 7 V clamping at 9 A - making it the preferred choice for 10 Gb/s differential interfaces requiring minimal signal distortion and guaranteed system-level compliance.
Availability
RClamp3371ZCTFT is available at Aetrix Electronics and suitable for USB 3.2 Gen 2, Thunderbolt 3, and HDMI 2.0 designs requiring stable component supply, high-volume production continuity, and traceable sourcing for industrial and consumer electronics programs.
Supply support for RClamp3371ZCTFT 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 signal integrity.
RClamp3371ZCTFT belongs to Semtech's RailClamp® family - engineered specifically for ultra-high-speed data line protection where femtofarad capacitance and sub-ohm dynamic resistance are essential to preserve signal integrity.
FAQ
What is the exact package footprint and land pattern for RClamp3371ZCTFT?
RClamp3371ZCTFT uses a DFN 0.60 × 0.30 × 0.25 mm, 2-lead package with symmetrical terminals. The recommended land pattern has 0.270 mm pad width, 0.675 mm pad length, and 0.355 mm center-to-center spacing. Stencil aperture should be rectangular with rounded corners and 0.075 mm thickness to achieve ≥0.66 area ratio - details are specified in Semtech's Final Datasheet Rev 2.6, page 7.
Does RClamp3371ZCTFT support bidirectional signal paths like USB 3.2 Gen 2 differential pairs?
Yes, RClamp3371ZCTFT is electrically symmetrical - its bidirectional clamping architecture allows direct placement on AC-coupled differential lines (e.g., TX+/TX−) without polarity concerns. This eliminates routing constraints and ensures consistent protection regardless of signal direction or USB Type-C plug orientation - confirmed in the "Device Placement" section of the RClamp3371ZCTFT datasheet.
What is the maximum clamping voltage of RClamp3371ZCTFT under real-world ESD stress?
RClamp3371ZCTFT clamps to 7 V maximum at 9 A using the IEC 61000-4-2-compliant 1.2/50 µs voltage + 8/20 µs current combination waveform (RS = 2 Ω). At lower currents (e.g., 4 A TLP), clamping drops to 3 V - enabling safe operation with 3.3 V I/O rails and preventing PHY latch-up during ±8 kV contact discharge events.
Can RClamp3371ZCTFT be used for HDMI 2.0 TMDS clock line protection?
Yes, RClamp3371ZCTFT is explicitly listed for HDMI 1.4 and HDMI 2.0 applications in its official datasheet. Its 0.25 pF capacitance avoids skew between TMDS data and clock channels, and its ±10 kV contact ESD rating satisfies HDMI compliance testing. Each TMDS channel (clock and three data pairs) requires one RClamp3371ZCTFT per line-to-ground path.
How does RClamp3371ZCTFT differ from standard TVS diodes in high-speed applications?
Unlike general-purpose TVS diodes (typically >1 pF), RClamp3371ZCTFT delivers 0.25 pF capacitance and 0.14 Ω dynamic resistance - enabling use on 10 Gb/s links without degrading eye height, jitter, or insertion loss. Standard TVS devices would introduce excessive capacitive loading and signal reflection, violating USB 3.2 Gen 2 or Thunderbolt 3 channel requirements.
RCLAMP3371ZCTFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0201 (0603 Metric)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 7V
- Current - Peak Pulse (10/1000µs):
- 9A (8/20µs)
- Power - Peak Pulse:
- 65W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.23pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP0603P2X3J
RCLAMP3371ZCTFT FAQ
1.How can I place an order for RCLAMP3371ZCTFT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3371ZCTFT 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 RCLAMP3371ZCTFT reliable?
The price and inventory of RCLAMP3371ZCTFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3371ZCTFT is usually 5 days.
3.What payment methods are accepted for RCLAMP3371ZCTFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3371ZCTFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3371ZCTFT?
RCLAMP3371ZCTFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3371ZCTFT 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 RCLAMP3371ZCTFT?
For technical support, including RCLAMP3371ZCTFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3371ZCTFT requirements.
6.How does Aetrix verify that RCLAMP3371ZCTFT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3371ZCTFT 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 RCLAMP3371ZCTFT meets industry standards.
7.What is the process for return or replacement of RCLAMP3371ZCTFT?
All RCLAMP3371ZCTFT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3371ZCTFT, 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 RCLAMP3371ZCTFT part is unused and in its original packaging.
Return procedure for RCLAMP3371ZCTFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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