My Inquiry
My Account
Semtech Corporation RCLAMP01811PW.C
- Part No.:
- RCLAMP01811PW.C
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP01811PW.C.pdf
- Description:
- 1,8V ESD & EOS PROTECTION
- Quantity:
- Payment:
- Shipping:
Inventory:3,429
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RCLAMP01811PW.C from Semtech is a transient diverting suppressor designed for high-energy EOS/ESD protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping voltage across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch inputs.
For engineers reviewing the RCLAMP01811PW.C datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world USB PD and load switch protection use cases, and validated alternative parts with documented functional trade-offs.
Technical Context
The RCLAMP01811PW.C uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A due to decreasing RDS(on), not fixed dynamic resistance.
It operates from −40°C to +125°C with <600nA reverse leakage at 22V, 175pF junction capacitance at 22V/1MHz, and 20mΩ dynamic resistance measured between 1A and 40A (8/20μs), enabling robust protection without thermal derating penalties seen in standard TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail systems without overvoltage stress. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - stays below 29V across full temp and current range, protecting 30V-tolerant controllers. |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 requirements for handheld and connector-facing interfaces. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 industrial surge immunity for 1.2/50μs voltage waveform with 2Ω source impedance. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for DC power line protection; not suitable for high-speed data lines (e.g., USB SS). |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast transients. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground connection; all three pins must be bonded to PCB ground plane via multiple vias to minimize inductance and maximize 40A surge current path. |
| 4, 5, 6 | IN | Protected line input; all three pins connect in parallel to the same bus (e.g., VBUS in USB Type-C) to distribute surge current and reduce trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Replaces traditional TVS diode with low-RDS(on) MOSFET triggered by precision circuit - eliminates linear VC = VBR + IPP×RDYN rise. |
| Temperature-stable clamping | Clamping voltage varies ≤0.5V from −40°C to +125°C at 40A - avoids thermal derating and ensures consistent protection in industrial environments. |
| High-energy surge capability | 1120W peak pulse power (8/20μs) supports repeated lightning-surge events per IEC 61000-4-5 without degradation. |
| Low leakage & capacitance | ≤600nA IR at 22V and 175pF CJ enable low-power standby operation and minimal impact on DC bus regulation. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS line in USB Type-C receptacles supporting up to 20V/5A PD negotiation against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector, shunting EOS energy to ground before reaching PD controller or load switch. Use Value: Maintains clamping ≤28V across full temperature range - prevents damage to 30V-rated PD controllers where conventional TVS would exceed safe limits at elevated ambient temperatures. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways exposed to field-installed wiring surges. IC Role / Device Role / Timing Role: Primary front-end EOS protector on VIN rail, limiting transient overvoltage to preserve internal FET integrity and prevent latch-up in downstream ICs. Use Value: 40A surge rating and stable clamping ensure compliance with IEC 61000-4-5 Level 3/4 while eliminating need for oversized TVS or redundant protection stages. |
| 22V Industrial Power Rail Protection | USB-C Docking Station VBUS Line Protection |
Use Scenario: Securing 22V nominal DC power rails in programmable logic controllers (PLCs), motor drives, and factory automation equipment. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main supply input, operating in parallel with bulk capacitors and upstream fuses. Use Value: 22V working voltage aligns precisely with 24V system tolerances; 1120W peak power rating sustains repeated 1kV/42Ω surges without parameter drift. |
Use Scenario: Protecting host-side VBUS lines in multi-port USB-C docking stations handling simultaneous PD negotiation and high-power charging. IC Role / Device Role / Timing Role: Per-port transient suppressor mounted adjacent to each Type-C connector, minimizing trace length to reduce inductive overshoot. Use Value: Compact 1.6×1.6mm DFN footprint allows placement at dense connector arrays; six-terminal layout ensures symmetric current sharing and low-inductance grounding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Same die, identical electrical specs and DFN-6 package; RCLAMP01811PW.C is Semtech's rebranded marking variant for distribution channel - fully interchangeable. | No functional difference; used interchangeably in USB PD reference designs and industrial schematics. | Select RCLAMP01811PW.C for Aetrix inventory availability; TDS2211P.C for direct Semtech procurement or alternate sourcing. |
| uClamp2411ZA.TCT | 24V working voltage, ±30kV ESD, but lower 25A (8/20μs) rating and higher 32V clamping at 24A - less robust for 40A surge events. | Better suited for CC/SBU lines in USB-C; insufficient for VBUS-level surge protection requiring ≥40A rating. | Use only for auxiliary signal lines; not a drop-in replacement for RCLAMP01811PW.C on power rails. |
Compared with TDS2211P.C (identical function) and uClamp2411ZA.TCT (lower surge rating, higher clamping), RCLAMP01811PW.C delivers guaranteed 40A/28V performance in the smallest DFN-6 footprint - making it the optimal choice for space-constrained, high-reliability 22V power line protection.
Availability
RCLAMP01811PW.C is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch inputs, and 22V power rail protection requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for RCLAMP01811PW.C 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, protection, and signal integrity applications.
RCLAMP01811PW.C belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes with FET-based clamping for stable, temperature-independent surge protection in high-reliability power and interface circuits.
FAQ
What is the exact package type and dimensions of RCLAMP01811PW.C?
RCLAMP01811PW.C uses a DFN package measuring 1.6mm × 1.6mm × 0.55mm with 6 leads. Pin 1 is marked by a laser dot; pins 1–3 are GND, and pins 4–6 are IN. The land pattern requires symmetric copper pour and multiple vias to ground for optimal 40A surge performance - full mechanical drawings are provided in Semtech's official datasheet Rev 2.5.
How does RCLAMP01811PW.C differ from standard TVS diodes in clamping behavior?
RCLAMP01811PW.C uses a triggered FET architecture instead of a pn-junction, resulting in near-constant clamping voltage (27.5–28V) from 1A to 40A and across −40°C to +125°C. Standard TVS diodes exhibit linear VC = VBR + IPP×RDYN rise, causing clamping to increase >10V over the same range - a key advantage for protecting 30V-tolerant controllers in thermally demanding environments.
Can RCLAMP01811PW.C be used on high-speed data lines like USB SuperSpeed?
No. RCLAMP01811PW.C has 175pF junction capacitance at 22V, which would severely degrade signal integrity on USB 3.x or PCIe lanes. It is intended exclusively for DC power lines (e.g., VBUS, load switch inputs). For high-speed data lines, Semtech recommends RClamp3371ZC (<0.25pF) - a separate, low-capacitance device explicitly designed for those applications.
What is the maximum surge current rating and test condition for RCLAMP01811PW.C?
RCLAMP01811PW.C is rated for 40A peak pulse current under IEC 61000-4-5 conditions: 8/20μs current waveform combined with 1.2/50μs voltage waveform and 2Ω source impedance. This corresponds to 1120W peak pulse power and is validated across the full −40°C to +125°C operating temperature range without derating.
Is RCLAMP01811PW.C compatible with automated SMT assembly processes?
Yes. RCLAMP01811PW.C is RoHS/WEEE compliant, lead-free, and qualified for standard reflow profiles including JEDEC J-STD-020. Its DFN-6 package supports 0.4mm pitch stencil design, and the UL 94V-0 molding compound withstands multiple reflow cycles. Semtech provides recommended land patterns and PCB layout guidelines in the official datasheet to ensure reliable solder joint formation.
RCLAMP01811PW.C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 1.8V (Max)
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
RCLAMP01811PW.C FAQ
1.How can I place an order for RCLAMP01811PW.C through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP01811PW.C 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 RCLAMP01811PW.C reliable?
The price and inventory of RCLAMP01811PW.C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP01811PW.C is usually 5 days.
3.What payment methods are accepted for RCLAMP01811PW.C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP01811PW.C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP01811PW.C?
RCLAMP01811PW.C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP01811PW.C 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 RCLAMP01811PW.C?
For technical support, including RCLAMP01811PW.C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP01811PW.C requirements.
6.How does Aetrix verify that RCLAMP01811PW.C is sourced from the original manufacturer or authorized distributors?
All RCLAMP01811PW.C 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 RCLAMP01811PW.C meets industry standards.
7.What is the process for return or replacement of RCLAMP01811PW.C?
All RCLAMP01811PW.C units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP01811PW.C, 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 RCLAMP01811PW.C part is unused and in its original packaging.
Return procedure for RCLAMP01811PW.C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP01811PW.C 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
