My Inquiry
My Account
Semtech Corporation RCLAMP01211ZCFT
- Part No.:
- RCLAMP01211ZCFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
RCLAMP01211ZCFT.pdf
- Description:
- 1-LINE 1.2V 0.2PF 2.5A SLP0603P2
- Quantity:
- Payment:
- Shipping:
Inventory:25,600
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RClamp01211ZCFT from Semtech is an ultra-low-capacitance (0.2 pF max), 1.2 V working voltage ESD protection diode designed for single high-speed differential data lines in USB4, Thunderbolt 3, and USB 3.2 Gen 2x2 interfaces, featuring ±10 kV IEC 61000-4-2 contact ESD immunity and 4.7 V TLP clamping at 4 A.
For engineers reviewing the RClamp01211ZCFT datasheet, pinout, applications, or equivalent options, this device is selected for high-fidelity signal integrity preservation on sub-10 GHz serial links where insertion loss ≤0.25 dB at 10 GHz and reverse leakage ≤100 nA at 1.2 V are critical design constraints.
Technical Context
RClamp01211ZCFT employs silicon-avalanche TVS technology optimized for low dynamic resistance (0.47 Ω) and fast snapback response to transient overvoltage events. Its symmetrical bidirectional structure enables protection of AC-coupled differential pairs without polarity sensitivity.
The device operates with a 1.2 V reverse stand-off voltage and 1.5–2.8 V breakdown range, enabling compatibility with low-voltage signaling standards while maintaining robust clamping performance: 4.2 V at 2.5 A (8/20 µs) and 4.7 V at 4 A (TLP). Its 0.2 pF capacitance ensures minimal signal distortion on 20+ Gbps links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance | 0.2 pF max at 0 V, 1 MHz - preserves signal integrity on >10 GHz differential lanes with negligible impedance discontinuity |
| ESD Withstand | ±10 kV contact per IEC 61000-4-2 - meets industrial and consumer interface surge immunity requirements |
| Clamping Voltage | 4.7 V at 4 A TLP (0.2/100 ns) - limits transient overvoltage to safe levels for 1.2 V transceivers |
| Working Voltage | 1.2 V VRWM - matches core supply rails of modern USB4/Thunderbolt 3 PHYs |
| Leakage Current | 100 nA max at 1.2 V - avoids DC loading of high-impedance receiver inputs |
| Insertion Loss | 0.25 dB at 10 GHz - maintains eye diagram margin in multi-gigabit serial links |
| Package Size | DFN 0.60 × 0.30 × 0.25 mm - enables placement adjacent to Type-C connectors with minimal PCB area |
Pinout & Package
Package: DFN 0.60 × 0.30 × 0.25 mm, 2-lead, Pb-free, RoHS-compliant, tape-and-reel (15,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode/Cathode (symmetrical) | Electrically identical terminal; bidirectional conduction enables placement on either side of AC coupling capacitor |
| 2 | Anode/Cathode (symmetrical) | Identical to Pin 1; device has no polarity - simplifies layout and eliminates orientation errors during assembly |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.2 pF maximum ensures <0.25 dB insertion loss at 10 GHz, preserving eye height and jitter budget |
| Bidirectional symmetry | Electrically identical terminals eliminate polarity concerns and simplify routing on differential pairs |
| Low clamping voltage | 4.7 V at 4 A TLP protects 1.2 V I/O structures without overstressing gate oxides or latch-up triggers |
| Sub-1 V operating margin | 1.2 V VRWM aligns precisely with USB4/Thunderbolt 3 PHY supply rails, avoiding unnecessary derating |
| High ESD immunity | ±10 kV contact discharge withstand enables compliance with end-equipment ESD certification test plans |
Applications
| Thunderbolt 3 Line Protection | USB4 Differential Pair Protection |
|---|---|
|
Use Scenario: Protecting HSTX/HSRX differential lanes in laptops and docks exposed to frequent hot-plug ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed on transceiver side of AC coupling capacitor to limit common-mode transients during DisplayPort alternate mode operation. Use Value: Enables use of same protection device across USB4 and DP1.4a alternate modes without redesign, leveraging 1.2 V VRWM and 4.7 V clamping. |
Use Scenario: Shielding SuperSpeed+ TX/RX lanes in host controllers and peripherals against IEC 61000-4-2 contact discharges. IC Role / Device Role / Timing Role: Low-capacitance ESD suppressor placed on connector side of AC coupling caps to block ESD energy before it reaches PHY circuitry. Use Value: Maintains <0.25 dB insertion loss at 10 GHz, ensuring USB4 Gen 3a (20 Gbps) eye diagrams meet USB-IF compliance masks. |
| USB 3.2 Gen 2x2 Interface | DisplayPort 1.4a Lane Protection |
|
Use Scenario: Securing dual-lane USB 3.2 Gen 2x2 implementations in external SSD enclosures and docking stations. IC Role / Device Role / Timing Role: Single-line ESD protector deployed per differential pair (TX+/−, RX+/−) to avoid crosstalk and maintain skew matching. Use Value: 0.2 pF capacitance prevents inter-pair skew degradation and preserves 10 Gbps per lane timing margins. |
Use Scenario: Safeguarding DP0/DP1 differential channels in monitors and graphics adapters subjected to cable-discharge events. IC Role / Device Role / Timing Role: Symmetrical TVS placed on connector side of AC coupling caps to clamp common-mode surges while passing 8.1 Gbps differential signals. Use Value: 4.2 V clamping at 2.5 A (8/20 µs) prevents damage to DP PHY receivers operating at 1.2 V supply. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-01UTG | 0.35 pF typical capacitance; ±12 kV contact ESD rating; 1.8 V VRWM | Higher capacitance limits use to ≤5 Gbps links; higher VRWM requires redesign for 1.2 V systems | Select only if system uses ≥1.8 V I/O rails and prioritizes higher ESD rating over bandwidth |
| TPD4E001DPYR | 0.5 pF typical capacitance; ±8 kV contact ESD; 3.6 V VRWM; quad-channel array | Not suitable for 10+ Gbps links due to higher capacitance; quad configuration increases layout complexity for single-line use | Prefer for cost-sensitive USB 3.0 (5 Gbps) designs where 0.5 pF is acceptable and board space allows array packaging |
Compared with SP1003-01UTG and TPD4E001DPYR, RClamp01211ZCFT delivers the lowest capacitance (0.2 pF) and tightest VRWM (1.2 V) match for USB4/Thunderbolt 3, enabling direct integration without signal integrity compromise or voltage rail adaptation.
Availability
RClamp01211ZCFT is available at Aetrix Electronics and suitable for Thunderbolt 3, USB4, and DisplayPort 1.4a interface designs requiring stable component supply, high-volume production readiness, and long-term lifecycle continuity.
Supply support for RClamp01211ZCFT 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 semiconductor company specializing in analog and mixed-signal ICs for precision sensing, power management, and high-speed signal protection.
RClamp01211ZCFT belongs to Semtech's RailClamp® family, engineered specifically for ultra-high-speed serial interface ESD protection where sub-0.3 pF capacitance and 1.2 V compatibility are mandatory.
FAQ
What is the maximum operating temperature range for RClamp01211ZCFT?
RClamp01211ZCFT is rated for continuous operation from −40 °C to +85 °C, supporting deployment in consumer laptops, docking stations, and industrial USB4 peripherals without thermal derating. This range aligns with JEDEC Class 2B environmental requirements and is validated across all electrical parameters in the datasheet.
Does RClamp01211ZCFT require orientation-specific placement on PCB?
No - RClamp01211ZCFT is electrically symmetrical with identical anode/cathode terminals, meaning either pin can connect to signal or ground-side traces. This eliminates orientation errors during automated placement and simplifies layout for differential pair routing in USB4 and Thunderbolt 3 designs.
How does RClamp01211ZCFT achieve 0.2 pF capacitance while maintaining ±10 kV ESD protection?
RClamp01211ZCFT achieves this through Semtech's proprietary FemtoClamp™ silicon-avalanche process, which optimizes junction geometry and doping profiles to minimize parasitic capacitance without sacrificing breakdown robustness. Measured capacitance remains ≤0.2 pF at 0 V and 1 MHz, verified per datasheet test conditions.
Can RClamp01211ZCFT be used on both transmitter and receiver sides of AC coupling capacitors?
Yes - its 1.2 V VRWM and bidirectional symmetry allow placement on either side. In Thunderbolt 3, it is recommended on the transceiver side for RX lines to limit common-mode voltage; for USB 3.2 TX lines, placement on the connector side is preferred per USB specification guidance in the RClamp01211ZCFT datasheet.
Is RClamp01211ZCFT compatible with lead-free reflow processes?
Yes - RClamp01211ZCFT is qualified per JEDEC J-STD-020 moisture sensitivity level (MSL) 1 and supports standard lead-free reflow profiles up to 260 °C peak temperature. The DFN package uses Pb-free terminations and complies with RoHS and WEEE directives as confirmed in the official Semtech datasheet Rev 2.2.
RCLAMP01211ZCFT 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):
- 1.2V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (0.6x0.3)
RCLAMP01211ZCFT FAQ
1.How can I place an order for RCLAMP01211ZCFT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP01211ZCFT 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 RCLAMP01211ZCFT reliable?
The price and inventory of RCLAMP01211ZCFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP01211ZCFT is usually 5 days.
3.What payment methods are accepted for RCLAMP01211ZCFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP01211ZCFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP01211ZCFT?
RCLAMP01211ZCFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP01211ZCFT 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 RCLAMP01211ZCFT?
For technical support, including RCLAMP01211ZCFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP01211ZCFT requirements.
6.How does Aetrix verify that RCLAMP01211ZCFT is sourced from the original manufacturer or authorized distributors?
All RCLAMP01211ZCFT 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 RCLAMP01211ZCFT meets industry standards.
7.What is the process for return or replacement of RCLAMP01211ZCFT?
All RCLAMP01211ZCFT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP01211ZCFT, 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 RCLAMP01211ZCFT part is unused and in its original packaging.
Return procedure for RCLAMP01211ZCFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP01211ZCFT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-7
Diodes Incorporated
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
