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Semtech Corporation RCLAMP1561PQTCT
- Part No.:
- RCLAMP1561PQTCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
RCLAMP1561PQTCT.pdf
- Description:
- 1-LINE 15V 0.25PF 2.6R ESD SLP10
- Quantity:
- Payment:
- Shipping:
Inventory:9,210
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Product details
Overview
RCLAMP1561PQTCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection on single 15V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping voltage across full current and temperature range. It protects USB Type-C VBUS, industrial load switch inputs, and IoT power rails where low, temperature-invariant clamping is critical.
For engineers reviewing the RCLAMP1561PQTCT datasheet, pinout, applications, or equivalent options, key selection criteria include its constant-clamp FET architecture, DFN-6 (1.6×1.6mm) package with triple parallel input/ground terminals, 175pF junction capacitance at 22V, and compliance with IEC 61000-4-2/4-4/4-5 surge standards.
Technical Context
The RCLAMP1561PQTCT implements a surge-rated MOSFET as the primary shunt element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly flat-27.5–28V-across 24A to 40A peak pulse currents due to decreasing RDS(on) under surge conditions.
It operates from −40°C to +125°C with <20mΩ dynamic resistance (8/20μs), 130–600nA reverse leakage at 22V, and 25–27.9V breakdown voltage. The device is optimized for unsymmetrical line protection and meets ±1kV IEC 61000-4-5 (1.2/50μs voltage, 8/20μs current, RS=42Ω) for industrial surge immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 15V - Maximum continuous DC operating voltage on protected line without leakage or degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - Stable, low-voltage shunt clamping prevents downstream IC damage during high-energy surges. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - Full system-level ESD robustness without derating at end-of-life. |
| Peak Pulse Current | 40A (8/20μs) - Handles lightning-induced transients per IEC 61000-4-5 Level 4 in industrial environments. |
| Junction Capacitance | 175pF at 22V, 1MHz - Low enough for USB PD VBUS filtering without signal integrity impact on DC/low-frequency power lines. |
| Dynamic Resistance | 20mΩ (8/20μs) - Enables near-constant clamping by minimizing IR drop increase with rising current. |
| Package | DFN-6 (1.6×1.6×0.55mm) - Ultra-compact footprint with three parallel input pins (4/5/6) and three ground pins (1/2/3) for low-inductance PCB layout. |
Pinout & Package
Package: DFN-6, 1.6 mm × 1.6 mm × 0.55 mm, Pb-free, RoHS/WEEE compliant, UL 94V-0 molding compound. Exposed thermal pad not required; energy dissipated in silicon.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Three parallel ground terminals - must all be connected to minimize inductance and maximize 40A surge current handling. |
| 4, 5, 6 | IN | Three parallel input terminals - connect directly to protected line (e.g., USB PD VBUS); enables uniform current sharing and low-impedance path to GND. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based constant-clamp architecture | Clamping voltage stays within 27.5–28V from 24A to 40A and −40°C to +125°C - eliminates thermal runaway risk in high-temp industrial deployments. |
| Triple-terminal parallel I/O design | Three input (pins 4/5/6) and three ground (pins 1/2/3) terminals reduce effective trace inductance by >50% vs. single-pin alternatives - critical for sub-10ns ESD rise time suppression. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 (±1kV, RS=42Ω) on 15V bus systems. |
| Low leakage & stable breakdown | 130–600nA reverse leakage at 22V and 25–27.9V breakdown - ensures minimal standby power loss and predictable turn-on threshold across temperature. |
| USB Type-C VBUS-optimized | 15V working voltage aligns with USB PD 3.0 15V profile; stable clamping prevents overvoltage damage to PD controllers during hot-plug or cable fault events. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the VBUS line of USB Type-C connectors supporting up to 15V/3A power delivery in notebooks, docking stations, and portable chargers. IC Role / Device Role / Timing Role: Transient diverting suppressor placed at connector entry point to clamp EOS events before reaching PD controller and power path FETs. Use Value: Maintains 27.5–28V clamping across temperature and current - avoids false OVP trips and ensures PD controller survival during ±30kV ESD and ±1kV surge events. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., HS2950P) in remote meters, PLC I/O modules, and robotic power distribution units. IC Role / Device Role / Timing Role: Primary front-end surge protector that limits voltage stress on the load switch's internal FET during lightning-induced transients. Use Value: Prevents gate oxide damage and latch-up in load switches by holding clamping voltage below 28V - extends field reliability in harsh 42Ω-coupled surge environments. |
| IoT Device Power Rail Protection | Storage Device 15V Supply Protection |
|
Use Scenario: Securing 15V DC input rails of battery-powered IoT gateways, smart sensors, and edge AI modules exposed to ESD during handling or field maintenance. IC Role / Device Role / Timing Role: Single-device, low-capacitance (175pF) EOS protector replacing multi-component TVS+RC networks on compact PCBs. Use Value: Eliminates need for external series resistors or RC filters - reduces BOM count while delivering ±30kV ESD and 40A surge immunity in 1.6×1.6mm area. |
Use Scenario: Shielding 15V auxiliary supplies in NVMe SSD enclosures, enterprise HDD backplanes, and RAID controller boards from board-level ESD and coupling noise. IC Role / Device Role / Timing Role: High-reliability transient suppressor placed between connector and DC-DC input stage to prevent latch-up in PMICs and LDOs. Use Value: Stable 27.5–28V clamping ensures downstream regulators remain within absolute maximum ratings - avoids data corruption or thermal shutdown during transient events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | 22V working voltage, 27.5–28V clamping, same DFN-6 package but rated for 22V bus - higher VRWM than RCLAMP1561PQTCT. | Targeted at 20–22V USB PD and industrial 24V systems - not suitable for strict 15V rail designs due to higher standoff voltage. | Select when protecting 22V nominal buses; verify PD controller VMAX tolerance exceeds 28V clamping. |
| RCLAMP0524PQTCT | 5V working voltage, 12V clamping, 30A IPP - lower voltage rating and reduced surge capability vs. RCLAMP1561PQTCT. | Designed for 3.3–5V logic/data lines (e.g., USB SS, HDMI, PCIe) - insufficient for 15V power rail protection. | Use only for low-voltage signal lines; cannot replace RCLAMP1561PQTCT on VBUS or load switch inputs. |
Compared with TDS2211P and RCLAMP0524PQTCT, RCLAMP1561PQTCT uniquely balances 15V working voltage, 40A surge capacity, and temperature-stable 28V clamping - making it the only validated option for USB PD 15V profiles and industrial 15V load switch inputs requiring guaranteed sub-28V protection.
Availability
RCLAMP1561PQTCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch protection, and IoT device 15V rail hardening requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for RCLAMP1561PQTCT 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.
RCLAMP1561PQTCT belongs to Semtech's RClamp® transient protection family, engineered specifically for high-reliability, low-clamp EOS suppression on power and interface lines in USB, industrial, and IoT applications.
FAQ
What is the maximum continuous operating voltage for RCLAMP1561PQTCT?
The RCLAMP1561PQTCT has a reverse stand-off voltage (VRWM) of 15V, meaning it is rated for continuous DC operation up to 15V on the protected line without significant leakage or degradation. This makes it ideal for USB PD 15V profiles and other 15V industrial power rails. Exceeding 15V risks premature conduction and accelerated wear of the internal FET-based protection structure in RCLAMP1561PQTCT.
How does RCLAMP1561PQTCT achieve stable clamping voltage across temperature and current?
RCLAMP1561PQTCT uses a surge-rated MOSFET as its main shunt element, controlled by a precision trigger circuit. As peak pulse current increases, the FET's RDS(on) decreases, counteracting IR rise and maintaining clamping voltage at 27.5–28V from −40°C to +125°C and 24A to 40A. This behavior is confirmed in the RCLAMP1561PQTCT datasheet's clamping vs. temperature and current curves.
Can RCLAMP1561PQTCT replace standard TVS diodes in USB PD VBUS protection?
Yes - RCLAMP1561PQTCT is explicitly recommended for USB PD VBUS protection in Semtech's application notes. Its 15V working voltage, 27.5–28V clamping, and ±30kV ESD rating meet USB IF requirements more reliably than conventional TVS diodes, whose clamping rises with temperature and current. RCLAMP1561PQTCT eliminates derating concerns in RCLAMP1561PQTCT-based designs.
What is the recommended PCB layout for optimal performance of RCLAMP1561PQTCT?
Place RCLAMP1561PQTCT as close as possible to the protected connector. Connect all three IN pins (4/5/6) via a single short, wide trace to the line, and tie all three GND pins (1/2/3) directly to a solid ground plane using multiple vias. Avoid thermal pads - energy is dissipated internally. This layout minimizes parasitic inductance and ensures full 40A surge capability in RCLAMP1561PQTCT.
Is RCLAMP1561PQTCT compliant with industrial surge immunity standards?
Yes - RCLAMP1561PQTCT meets IEC 61000-4-5 Level 4 (±1kV, 1.2/50μs voltage + 8/20μs current, RS=42Ω) and IEC 61000-4-4 (±4kV EFT) for unsymmetrical lines. Its 40A peak pulse current rating and 1120W pulse power capability make it suitable for industrial equipment, remote meters, and robotics where robust surge immunity is mandatory for RCLAMP1561PQTCT deployments.
RCLAMP1561PQTCT 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 15V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- -
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- Automotive
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
RCLAMP1561PQTCT FAQ
1.How can I place an order for RCLAMP1561PQTCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP1561PQTCT 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 RCLAMP1561PQTCT reliable?
The price and inventory of RCLAMP1561PQTCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP1561PQTCT is usually 5 days.
3.What payment methods are accepted for RCLAMP1561PQTCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP1561PQTCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP1561PQTCT?
RCLAMP1561PQTCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP1561PQTCT 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 RCLAMP1561PQTCT?
For technical support, including RCLAMP1561PQTCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP1561PQTCT requirements.
6.How does Aetrix verify that RCLAMP1561PQTCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP1561PQTCT 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 RCLAMP1561PQTCT meets industry standards.
7.What is the process for return or replacement of RCLAMP1561PQTCT?
All RCLAMP1561PQTCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP1561PQTCT, 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 RCLAMP1561PQTCT part is unused and in its original packaging.
Return procedure for RCLAMP1561PQTCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP1561PQTCT Tags
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