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Semtech Corporation RCLAMP01501ZCFT
- Part No.:
- RCLAMP01501ZCFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
RCLAMP01501ZCFT.pdf
- Description:
- RCLAMP, 1-LINE 1.5V 0.25PF SLP06
- Quantity:
- Payment:
- Shipping:
Inventory:13,268
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Product details
Overview
RClamp01501ZCFT from Semtech is a low-capacitance, single-line ESD protection diode designed for high-speed differential data lines operating at 1.5 V. It delivers ±18 kV (air) / ±12 kV (contact) IEC 61000-4-2 ESD immunity, 0.25 pF max junction capacitance, and 2.7 V clamping voltage at 5 A (8/20 µs), enabling robust protection of USB 3.1 Gen 2, Thunderbolt 3, and DisplayPort 2.0 interfaces without signal integrity degradation.
For engineers reviewing the RClamp01501ZCFT datasheet, pinout, applications, or equivalent options, key selection criteria include its 1.5 V working voltage, ultra-low 0.23–0.25 pF capacitance across 0–1.5 V bias, 2.5 V TLP clamping at 4 A, 5 A peak pulse current capability, and DFN 0.60×0.30×0.25 mm 2-lead package - all critical for preserving GHz-range signal fidelity in compact high-speed layouts.
Technical Context
RClamp01501ZCFT employs silicon-avalanche TVS technology optimized for bidirectional ESD and EOS suppression on single-ended or differential high-speed lanes. Its symmetrical structure supports placement either side of AC coupling capacitors depending on common-mode voltage constraints, with dynamic resistance of 0.23 Ω measured between 4 A and 16 A TLP pulses.
The device operates within -40°C to +85°C ambient, features <0.5 µA reverse leakage at VRWM = 1.5 V, and maintains sub-0.7 dB insertion loss at 10 GHz - confirming minimal RF impact. Clamping behavior is characterized by fast snapback response and stable low-voltage conduction, validated under IEC 61000-4-2, TLP (0.2/100 ns), and 8/20 µs combination waveforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 1.5 V - defines maximum continuous DC bias before leakage exceeds 0.5 µA; sets upper limit for safe placement relative to AC coupling caps. |
| Junction Capacitance (CJ) | 0.23–0.25 pF @ 1 MHz, 0–1.5 V - ensures negligible loading on 10 Gbps+ differential signals (e.g., USB 3.1 Gen 2, Thunderbolt 3). |
| ESD Clamping Voltage (TLP) | 2.5 V @ 4 A - limits transient overvoltage seen by downstream transceiver during ESD events, protecting 1.2 V/1.5 V I/O cells. |
| Peak Pulse Current (IPP) | 5 A @ 8/20 µs - supports robust EOS protection against surge transients beyond ESD, including hot-plug and cable discharge events. |
| ESD Withstand (IEC 61000-4-2) | ±18 kV air / ±12 kV contact - exceeds industrial and consumer interface immunity requirements for USB-C and Thunderbolt connectors. |
| Insertion Loss (S21) | -0.7 dB @ 10 GHz - confirms minimal high-frequency attenuation, preserving eye diagram integrity in multi-gigabit serial links. |
Pinout & Package
Package: DFN 0.60 × 0.30 × 0.25 mm, 2-lead, bottom-view, NiAu-plated terminals, RoHS/WEEE compliant. Electrically symmetrical - Pin 1 and Pin 2 are interchangeable.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (symmetrical) | Either terminal may serve as anode or cathode; no polarity dependency - simplifies PCB layout and routing on differential pairs. |
| Pin 2 | Anode/Cathode (symmetrical) | Paired with Pin 1 to form bidirectional clamping path; enables placement on TX+/TX− or RX+/RX− lines without orientation constraint. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.25 pF max preserves signal integrity on 10 Gbps+ interfaces (USB 3.1 Gen 2, Thunderbolt 3) without degrading rise time or eye opening. |
| Bidirectional ESD clamping | ±18 kV air / ±12 kV contact rating protects against both polarities of ESD discharge - essential for reversible USB-C and bidirectional DP lanes. |
| Low clamping voltage | 2.5 V @ 4 A TLP ensures protected IC I/O remains below damage threshold even during worst-case ESD strikes near connector ports. |
| High-speed placement flexibility | Symmetrical 2-lead DFN allows placement on either side of AC coupling capacitors - critical for managing common-mode voltage in alternate modes (e.g., DP 1.4a over USB-C). |
| EOS surge capability | 5 A peak pulse current (8/20 µs) extends protection beyond ESD to include cable discharge events and power rail transients in portable systems. |
Applications
| USB 3.1 Gen 2 Interface | Thunderbolt 3 Differential Pair |
|---|---|
Use Scenario: Protecting SuperSpeed TX/RX differential lanes in Type-C receptacles exposed to repeated hot-plug and ESD events. IC Role / Device Role / Timing Role: Bidirectional TVS clamp placed on connector side of AC coupling caps to block common-mode voltage while suppressing ESD on SSTX+/SSTX−. Use Value: Maintains <0.7 dB insertion loss at 10 GHz and 0.25 pF loading - preventing jitter accumulation and ensuring compliance with USB 3.1 Gen 2 eye mask requirements. |
Use Scenario: Safeguarding Thunderbolt 3 HSTX/HSRX lanes in docking stations and host controllers where 20 Gbps signaling coexists with HDMI/DP alternate modes. IC Role / Device Role / Timing Role: Low-VRWM (1.5 V) TVS placed on transceiver side of AC coupling caps to clamp differential transients while isolating higher common-mode voltages. Use Value: 2.5 V TLP clamping at 4 A prevents latch-up in 1.2 V SerDes I/O, and symmetrical pinout eliminates orientation errors during automated assembly. |
| DisplayPort 2.0 Lane | USB Type-C Alternate Mode |
Use Scenario: Shielding DP 2.0 main link lanes (DP0P/DP0N, DP1P/DP1N) in monitors and GPUs from ESD during cable mating/unmating. IC Role / Device Role / Timing Role: Single-line ESD protector deployed per lane with AC coupling caps on both TX and RX sides - TVS on TX side (connector) and RX side (transceiver) per layout guidance. Use Value: 0.23 pF typical capacitance avoids skew between differential pairs and meets DP 2.0 80 Gbps (UHBR20) channel loss budgets. |
Use Scenario: Enabling reliable USB-C port operation across multiple protocols (USB 3.x, DP 1.4a, HDMI 2.0) where common-mode voltage varies by mode. IC Role / Device Role / Timing Role: Symmetrical 2-lead TVS used per high-speed lane, positioned adaptively (connector/transceiver side) based on real-time common-mode level per protocol specification. Use Value: Eliminates need for separate part numbers per placement - reduces BOM count and simplifies layout reuse across USB-C product families. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD1E01B04DPYR (TI) | 0.2 pF max capacitance, 1.8 V VRWM, ±12 kV contact ESD rating, SOD-523 package (1.0 × 0.6 × 0.5 mm) | Larger footprint and 0.3 V higher VRWM limit placement options in 1.5 V systems; lower ESD rating reduces margin for ruggedized ports. | Select when board space permits larger package and system common-mode voltage exceeds 1.5 V. |
| SP1001-01UTG (Littelfuse) | 0.3 pF max capacitance, 3.3 V VRWM, ±15 kV air ESD, 0201 package (0.6 × 0.3 × 0.3 mm) | Higher VRWM restricts use to 3.3 V rails or post-AC-coupled locations only; 0.05 pF higher capacitance increases risk of signal degradation above 8 Gbps. | Prefer for legacy 3.3 V interfaces or cost-sensitive designs where 10 Gbps performance is not required. |
Compared with TPD1E01B04DPYR and SP1001-01UTG, RClamp01501ZCFT uniquely combines 1.5 V VRWM, 0.25 pF capacitance, and ±12 kV contact ESD in a 0.60×0.30 mm DFN - making it the only option qualified for direct placement on 1.5 V differential lanes in USB-C/Thunderbolt 3 designs without AC coupling repositioning.
Availability
RClamp01501ZCFT is available at Aetrix Electronics and suitable for USB 3.1 Gen 2, Thunderbolt 3, and DisplayPort 2.0 interface designs requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for RClamp01501ZCFT 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.
RClamp01501ZCFT belongs to Semtech's RailClamp®/RClamp® family - engineered specifically for ultra-low-capacitance, high-fidelity ESD protection of multi-gigabit serial interfaces in space-constrained portable and docking applications.
FAQ
What is the maximum operating voltage for RClamp01501ZCFT?
RClamp01501ZCFT has a reverse stand-off voltage (VRWM) of 1.5 V, meaning it is rated for continuous operation up to 1.5 V DC or peak AC signal levels within that range. Exceeding this voltage risks increased leakage current (>0.5 µA) and potential premature conduction. This rating directly informs placement decisions relative to AC coupling capacitors in USB-C and Thunderbolt 3 designs.
Does RClamp01501ZCFT support bidirectional ESD protection?
Yes, RClamp01501ZCFT is electrically symmetrical - its two terminals are functionally identical, providing identical ±18 kV (air) and ±12 kV (contact) ESD protection in both directions. This eliminates polarity concerns during layout and enables flexible placement on either side of AC coupling capacitors, a key advantage in differential high-speed interfaces like Thunderbolt 3 and DisplayPort.
What is the clamping voltage of RClamp01501ZCFT under ESD stress?
RClamp01501ZCFT achieves 2.5 V clamping voltage at 4 A using Transmission Line Pulse (TLP) testing (0.2/100 ns), and 2.7 V at 5 A using the 1.2/50 µs voltage + 8/20 µs current combination waveform. These values represent the maximum voltage imposed on protected circuitry during standardized ESD events - critical for ensuring compatibility with 1.2 V and 1.5 V transceiver I/O structures.
Can RClamp01501ZCFT be used for EOS (Electrical Overstress) protection?
Yes, RClamp01501ZCFT is rated for 5 A peak pulse current (tp = 8/20 µs), making it suitable for EOS protection in addition to ESD. Its silicon-avalanche construction and 20 W peak pulse power rating enable robust handling of cable discharge events, hot-swap transients, and other non-ESD surge conditions commonly encountered in USB-C and docking station applications.
What package type does RClamp01501ZCFT use, and what are its dimensions?
RClamp01501ZCFT uses a DFN (Dual Flat No-lead) package measuring 0.60 × 0.30 × 0.25 mm with 2 copper terminals finished in NiAu. The package is Pb-free, halogen-free, and RoHS/WEEE compliant. Its ultra-compact size and symmetrical 2-lead configuration minimize PCB area usage and simplify automated placement in dense high-speed layouts.
RCLAMP01501ZCFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0201 (0603 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 1.5V
- 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)
RCLAMP01501ZCFT FAQ
1.How can I place an order for RCLAMP01501ZCFT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP01501ZCFT 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 RCLAMP01501ZCFT reliable?
The price and inventory of RCLAMP01501ZCFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP01501ZCFT is usually 5 days.
3.What payment methods are accepted for RCLAMP01501ZCFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP01501ZCFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP01501ZCFT?
RCLAMP01501ZCFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP01501ZCFT 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 RCLAMP01501ZCFT?
For technical support, including RCLAMP01501ZCFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP01501ZCFT requirements.
6.How does Aetrix verify that RCLAMP01501ZCFT is sourced from the original manufacturer or authorized distributors?
All RCLAMP01501ZCFT 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 RCLAMP01501ZCFT meets industry standards.
7.What is the process for return or replacement of RCLAMP01501ZCFT?
All RCLAMP01501ZCFT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP01501ZCFT, 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 RCLAMP01501ZCFT part is unused and in its original packaging.
Return procedure for RCLAMP01501ZCFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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