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Semtech Corporation RCLAMP3391ZCTFT
- Part No.:
- RCLAMP3391ZCTFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
RCLAMP3391ZCTFT.pdf
- Description:
- 1-LINE 3.3V 0.20PF ESD SLP0603P2
- Quantity:
- Payment:
- Shipping:
Inventory:27,582
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Product details
Overview
RClamp3391ZCTFT from Semtech is an ultra-low-capacitance (0.20 pF max), 3.3 V working voltage, single-line ESD/EOS protection diode in a DFN 0.60×0.30×0.25 mm 2-lead package, designed for high-speed differential data lines including USB 3.1 Gen 2 and Thunderbolt 3.
For engineers reviewing the RClamp3391ZCTFT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage (≤6.5 V at 7 A), dynamic resistance (0.18 Ω), ESD rating (±8 kV contact), and insertion loss performance up to 10 GHz.
Technical Context
RClamp3391ZCTFT employs silicon-avalanche TVS technology with symmetrical bidirectional conduction and snapback behavior, enabling low clamping voltage (3.3 V at 4 A TLP) and fast response to ESD transients. Its electrical symmetry eliminates polarity concerns during layout.
The device operates as a rail-to-rail clamp between signal line and ground, with reverse stand-off voltage (VRWM) of 3.3 V and breakdown voltage (VBR) of 5.5–10 V. It delivers 7 A peak pulse current (8/20 µs) and 45 W peak pulse power while maintaining sub-0.2 pF capacitance critical for 10 Gb/s signal integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance (CJ) | 0.20 pF max at 1 MHz - preserves impedance matching and minimizes signal distortion on 10 Gb/s differential lanes |
| Clamping Voltage (VC) | 6.5 V max at 7 A (8/20 µs) - limits transient overvoltage seen by downstream PHY without compromising eye diagram |
| ESD Withstand | ±8 kV contact per IEC 61000-4-2 - meets industrial and consumer interface immunity requirements |
| Working Voltage (VRWM) | 3.3 V - matches standard I/O supply rails for USB 3.x, HDMI 2.0, and Thunderbolt 3 controller interfaces |
| Dynamic Resistance (RDYN) | 0.18 Ω - ensures rapid voltage collapse post-trigger and stable clamping under multi-pulse stress |
| Leakage Current (IR) | 50 nA max at 3.3 V - avoids DC loading or bias shift in high-impedance receiver inputs |
| Peak Pulse Current (IPP) | 7 A (8/20 µs) - supports EOS events such as hot-plug surges and cable discharge events |
Pinout & Package
Package: DFN 0.60 × 0.30 × 0.25 mm, 2-lead, NiAu-plated, bottom-view symmetrical terminals. Marking code "9C".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Signal Line (Anode/Cathode) | Electrically symmetrical terminal - connects to protected high-speed data line (e.g., TX+, RX−) |
| 2 | Ground Reference | Low-inductance path to PCB ground plane - requires micro-via connection directly beneath pad for optimal clamping |
Key Features
| Feature | Design Value |
|---|---|
| FemtoFarad capacitance | 0.20 pF max - enables use on 10 Gb/s differential pairs without measurable insertion loss degradation |
| Snapback-triggered clamping | Holding voltage ≤3.3 V after trigger - prevents latch-up and maintains signal integrity during sustained transients |
| Ultra-low dynamic resistance | 0.18 Ω - reduces voltage overshoot during fast-rising ESD pulses (e.g., IEC 61000-4-2) |
| Single-line discrete protection | Protects one differential leg independently - simplifies routing and avoids common-mode imbalance in Type-C layouts |
| RoHS/WEEE-compliant packaging | Pb-free, halogen-free DFN with NiAu finish - supports lead-free reflow and high-reliability assembly per JEDEC J-STD-020 |
Applications
| Thunderbolt 3 Interface Protection | USB 3.1 Gen 2 Host Port |
|---|---|
Use Scenario: Protecting bidirectional 20 Gbps differential lanes (TX/RX pairs) on host-side Thunderbolt 3 controllers against connector ESD events. IC Role / Device Role / Timing Role: Rail-to-rail TVS clamp placed between each SuperSpeed+ lane and ground, operating transparently during normal signaling. Use Value: Sub-0.2 pF capacitance ensures <−15 dB insertion loss at 10 GHz, preserving eye opening and jitter margin required for PCIe 3.0 tunneling. |
Use Scenario: ESD hardening of USB 3.1 Gen 2 (10 Gbps) differential signals on laptop or dock upstream ports. IC Role / Device Role / Timing Role: Single-line transient suppressor mounted adjacent to USB Type-C receptacle, clamping ±8 kV contact discharges before reaching controller PHY. Use Value: 6.5 V clamping voltage at 7 A limits stress on 3.3 V I/O cells, preventing gate oxide damage and ensuring USB-IF compliance. |
| HDMI 2.0 TMDS Channel | HD-SDI Data Path |
Use Scenario: Protecting 6 Gbps TMDS clock and data channels in professional AV equipment against handling ESD during cable insertion. IC Role / Device Role / Timing Role: Bidirectional ESD clamp on each TMDS+ and TMDS− line referenced to local ground, leveraging electrical symmetry. Use Value: 0.17–0.20 pF typical capacitance avoids skew between differential legs and maintains HDMI 2.0's 1.65 Vpp swing integrity. |
Use Scenario: Safeguarding 3 Gbps HD-SDI serial data links in broadcast cameras and switchers exposed to field ESD. IC Role / Device Role / Timing Role: Point-of-entry TVS on coaxial input path, shunting transients before equalizer IC input stage. Use Value: 7 A peak pulse current rating handles cable discharge events without degradation, supporting SMPTE 424M reliability targets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DRYR | 0.5 pF typical capacitance; 3.6 V VRWM; ±12 kV air/±8 kV contact ESD rating | Higher capacitance limits use to ≤5 Gbps interfaces (e.g., USB 3.0); broader ESD margin but higher signal loading | Select when higher ESD margin is prioritized over 10 Gbps compatibility and board space is less constrained. |
| SMLJ3.3A | 3.3 V VBR; 100 pF typical capacitance; 100 A IPP (8/20 µs); DO-214AC package | Not suitable for high-speed data lines due to excessive capacitance; intended for power rail or low-frequency signal protection | Use only for non-high-speed applications (e.g., VBUS line surge suppression) where RClamp3391ZCTFT's low capacitance is unnecessary. |
Compared with TPD4E001DRYR and SMLJ3.3A, RClamp3391ZCTFT uniquely balances 0.20 pF capacitance, 3.3 V working voltage, and ±8 kV contact ESD rating in a 0.6×0.3 mm footprint-making it the only option qualified for 10 Gbps differential interfaces like USB 3.1 Gen 2 and Thunderbolt 3 without signal integrity compromise.
Availability
RClamp3391ZCTFT is available at Aetrix Electronics and suitable for Thunderbolt 3 interface design, USB 3.1 Gen 2 host port hardening, and HDMI 2.0 TMDS channel protection requiring stable component supply across production volumes.
Supply support for RClamp3391ZCTFT 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.
RClamp3391ZCTFT belongs to Semtech's RailClamp® family of ultra-low-capacitance TVS diodes engineered specifically for high-speed serial interface protection-including USB, HDMI, Thunderbolt, and HD-SDI-where signal fidelity and ESD robustness must coexist.
FAQ
What is the maximum junction capacitance of RClamp3391ZCTFT, and why does it matter for high-speed designs?
The maximum junction capacitance of RClamp3391ZCTFT is 0.20 pF at 1 MHz and 0 V bias. This ultra-low value is critical because it minimizes signal distortion and insertion loss on 10 Gbps differential lanes-ensuring compliance with USB 3.1 Gen 2 and Thunderbolt 3 eye diagram and jitter specifications. Higher capacitance would degrade impedance matching and increase bit error rates.
Does RClamp3391ZCTFT require orientation-specific placement on the PCB?
No. RClamp3391ZCTFT is electrically symmetrical-its two terminals are functionally identical-and can be placed in either direction between signal and ground. This simplifies layout, eliminates polarity errors during assembly, and supports flexible routing in dense USB Type-C or HDMI 2.0 PCB topologies where space is constrained.
What is the clamping voltage of RClamp3391ZCTFT under a 7 A 8/20 µs surge, and how is it measured?
RClamp3391ZCTFT has a maximum clamping voltage of 6.5 V under a 7 A 8/20 µs current waveform with 2 Ω source impedance. This value is measured per IEC 61000-4-5 methodology and defines the peak voltage imposed on the protected IC during worst-case surge events-directly limiting stress on 3.3 V I/O structures in the RClamp3391ZCTFT-protected system.
Can RClamp3391ZCTFT be used to protect USB Type-C CC (Configuration Channel) pins?
Yes. RClamp3391ZCTFT is explicitly recommended in Semtech's application notes for protecting USB Type-C CC and SBU pins. Its 3.3 V working voltage aligns with CC logic levels, and its low leakage (<50 nA) avoids interfering with the 5–10 kΩ pull-up/down resistors used in USB PD negotiation-making RClamp3391ZCTFT suitable for full Type-C interface hardening.
What is the thermal and environmental rating of RClamp3391ZCTFT?
RClamp3391ZCTFT is rated for operation from −40 °C to +85 °C and storage from −55 °C to +150 °C. Its DFN package uses NiAu plating and complies with RoHS and WEEE directives. These ratings ensure reliable performance in consumer laptops, industrial docking stations, and broadcast HD-SDI equipment where ambient temperature swings and long-term stability are critical for RClamp3391ZCTFT deployment.
RCLAMP3391ZCTFT 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:
- 6.5V
- Current - Peak Pulse (10/1000µs):
- 7A (8/20µs)
- Power - Peak Pulse:
- 45W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 0.17pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP0603P2X3J
RCLAMP3391ZCTFT FAQ
1.How can I place an order for RCLAMP3391ZCTFT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP3391ZCTFT 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 RCLAMP3391ZCTFT reliable?
The price and inventory of RCLAMP3391ZCTFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP3391ZCTFT is usually 5 days.
3.What payment methods are accepted for RCLAMP3391ZCTFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP3391ZCTFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP3391ZCTFT?
RCLAMP3391ZCTFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP3391ZCTFT 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 RCLAMP3391ZCTFT?
For technical support, including RCLAMP3391ZCTFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP3391ZCTFT requirements.
6.How does Aetrix verify that RCLAMP3391ZCTFT is sourced from the original manufacturer or authorized distributors?
All RCLAMP3391ZCTFT 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 RCLAMP3391ZCTFT meets industry standards.
7.What is the process for return or replacement of RCLAMP3391ZCTFT?
All RCLAMP3391ZCTFT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP3391ZCTFT, 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 RCLAMP3391ZCTFT part is unused and in its original packaging.
Return procedure for RCLAMP3391ZCTFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP3391ZCTFT Tags
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