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Semtech Corporation RCLAMP0544P.A
- Part No.:
- RCLAMP0544P.A
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 10-UFDFN
- Datasheet:
-
RCLAMP0544P.A.pdf
- Description:
- 4-LINE 5V 0.16PF TYP. 5A SMF2510
- Quantity:
- Payment:
- Shipping:
Inventory:3,490
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Product details
Overview
RCLAMP0544P.A from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 22V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 24–40A, and 175pF junction capacitance at 22V - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the RCLAMP0544P.A datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for 22V bus protection in high-reliability embedded and interface designs.
Technical Context
RCLAMP0544P.A 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 threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 24–40A (8/20μs) due to decreasing RDS(on) under surge conditions.
The device operates from −40°C to +125°C with stable 27.5–28V clamping up to 125°C, 22V reverse stand-off voltage, and <20mΩ dynamic resistance - enabling robust protection where thermal derating and voltage margin are critical, such as USB PD controller inputs and industrial e-fuse front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 24–40A (1.2/50μs + 8/20μs combo wave, RS = 2Ω) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - provides immunity against human-body-model ESD events at connector interfaces. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD systems. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Dynamic Resistance | 20mΩ (8/20μs, 1–40A range) - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Leakage Current | 130–600nA at 22V - negligible power loss in always-on 22V bus applications like load switch enable paths. |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish, tape-and-reel packaging.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three pins must be connected to minimize inductance and maximize 40A handling capability. |
| 4, 5, 6 | IN | Protected line input (e.g., VBus or load switch input); parallel connection required to distribute surge current and reduce trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces conventional TVS with active shunt architecture, delivering flat clamping vs. current and temperature - avoids voltage rise at high IPP or elevated ambient. |
| Stable clamping over temperature | 27.5–28V clamping maintained from −40°C to +125°C - eliminates need for thermal derating margins in industrial or automotive-adjacent environments. |
| Low dynamic resistance | 20mΩ enables minimal IR drop during 40A surges - reduces localized heating and improves reliability versus higher-RDYN TVS solutions. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) supports compliance with IEC 61000-4-5 Level 4 in harsh industrial settings. |
| Compact DFN footprint | 1.6mm × 1.6mm area saves >50% board space vs. SO-8 or SOT-23 TVS alternatives - ideal for dense USB Type-C and IoT PCB layouts. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting VBus lines in USB Type-C receptacles supporting up to 20V PD, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and USB PD controller or load switch input. Use Value: Maintains 27.5–28V clamping at full 40A surge and 125°C - prevents overvoltage damage to 24V-rated PD controllers without over-specifying IPP. |
Use Scenario: Safeguarding enable or input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation. IC Role / Device Role / Timing Role: Primary EOS protection element absorbing 8/20μs surges before they reach the load switch's internal FET gate or drain. Use Value: Limits clamping voltage below the load switch's absolute maximum ratings (e.g., <30V), preventing latch-up or permanent gate oxide failure. |
| IoT Device Power Rail Protection | Storage Device 22V Bus Protection |
Use Scenario: Securing 22V auxiliary power rails in battery-powered or PoE-powered IoT edge nodes subjected to field ESD and induced transients. IC Role / Device Role / Timing Role: Standalone transient suppressor on main supply input, upstream of DC-DC converters and PMICs. Use Value: 175pF capacitance avoids filtering or stability issues in switching regulator feedback paths while delivering ±30kV ESD immunity. |
Use Scenario: Protecting 22V power inputs in NVMe SSD enclosures or enterprise storage backplanes exposed to hot-plug and system-level surges. IC Role / Device Role / Timing Role: High-energy clamp on VCC rail feeding storage controller ASICs and flash memory power domains. Use Value: 40A surge rating and 1120W peak power withstand ensure survival during chassis-level EFT bursts per IEC 61000-4-4 (±4kV). |
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, but marked with "T22" code and shipped in 7″ reel (3,000 pcs); RCLAMP0544P.A uses different marking and packaging. | No functional difference; used interchangeably in USB Type-C and industrial designs where reel size or date-code tracking differs. | Select TDS2211P.C when sourcing from Semtech's standard distribution channel with full traceability and standard tape/reel logistics. |
| uClamp2411ZA | 24V working voltage, lower 24A IPP rating, ±30kV ESD, but higher 30V clamping at 24A - lacks flat-clamp FET architecture. | Suitable for CC/SBU lines in USB Type-C, not recommended for 22V VBus due to higher clamping and thermal sensitivity. | Choose uClamp2411ZA only for lower-energy signal-line protection; avoid for main power rail where RCLAMP0544P.A's 27.5V clamping and 40A rating are critical. |
Compared with TDS2211P.C, RCLAMP0544P.A offers identical protection performance in a functionally equivalent package but may differ in reel packaging and marking - whereas uClamp2411ZA serves distinct low-capacitance signal-line roles and cannot replace RCLAMP0544P.A in 22V power rail applications due to clamping and surge rating limitations.
Availability
RCLAMP0544P.A is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch front-ends, and IoT 22V power rail protection requiring stable component supply, long-term lifecycle support, and consistent surge performance across temperature extremes.
Supply support for RCLAMP0544P.A 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.
RCLAMP0544P.A belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes with FET-based active clamping for flat-voltage, high-current, temperature-stable EOS protection in next-generation interfaces and industrial power systems.
FAQ
What is the maximum continuous operating voltage for RCLAMP0544P.A?
RCLAMP0544P.A has a reverse stand-off voltage (VRWM) of 22V, meaning it can safely block up to 22V DC or RMS AC continuously without significant leakage or conduction. This makes RCLAMP0544P.A appropriate for 20V USB PD VBus and other 22V-rated power rails where sustained voltage margin is required.
How does RCLAMP0544P.A achieve stable clamping voltage across temperature?
RCLAMP0544P.A uses a surge-rated FET and precision trigger circuit instead of a PN-junction TVS. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise - resulting in 27.5–28V clamping from −40°C to +125°C. This behavior is confirmed in the TDS2211P datasheet curves and distinguishes RCLAMP0544P.A from conventional TVS devices.
Can RCLAMP0544P.A replace standard TVS diodes in 22V applications?
Yes - RCLAMP0544P.A is designed as a drop-in upgrade for 22V TVS diodes in high-reliability applications. Its 40A surge rating, ±30kV ESD immunity, and flat clamping eliminate thermal derating concerns. However, verify PCB land pattern compatibility (DFN 1.6×1.6mm) and ensure all six pins are properly routed per Semtech's layout guidelines for RCLAMP0544P.A.
What is the junction capacitance of RCLAMP0544P.A and why does it matter?
RCLAMP0544P.A exhibits 175pF junction capacitance at 22V and 1MHz. This value is optimized for 22V power rail protection - low enough to avoid destabilizing downstream regulators or causing excessive filtering, yet high enough to sustain robust surge energy absorption. It is not intended for high-speed data lines, where sub-0.5pF devices like RClamp3371ZC are preferred.
Is RCLAMP0544P.A RoHS and halogen-free compliant?
Yes - RCLAMP0544P.A is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is lead-free, satisfying environmental and safety requirements for industrial, computing, and consumer electronics deployments of RCLAMP0544P.A.
RCLAMP0544P.A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 10-UFDFN
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 4
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 5.5V
- Voltage - Clamping (Max) @ Ipp:
- 6.5V
- Current - Peak Pulse (10/1000µs):
- 6.5A (8/20µs)
- Power - Peak Pulse:
- 42W
- Power Line Protection:
- No
- Applications:
- HDMI, USB
- Capacitance @ Frequency:
- 190pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (2.5x1)
RCLAMP0544P.A FAQ
1.How can I place an order for RCLAMP0544P.A through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP0544P.A 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 RCLAMP0544P.A reliable?
The price and inventory of RCLAMP0544P.A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP0544P.A is usually 5 days.
3.What payment methods are accepted for RCLAMP0544P.A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP0544P.A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP0544P.A?
RCLAMP0544P.A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP0544P.A 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 RCLAMP0544P.A?
For technical support, including RCLAMP0544P.A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP0544P.A requirements.
6.How does Aetrix verify that RCLAMP0544P.A is sourced from the original manufacturer or authorized distributors?
All RCLAMP0544P.A 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 RCLAMP0544P.A meets industry standards.
7.What is the process for return or replacement of RCLAMP0544P.A?
All RCLAMP0544P.A units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP0544P.A, 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 RCLAMP0544P.A part is unused and in its original packaging.
Return procedure for RCLAMP0544P.A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP0544P.A Tags
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