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Semtech Corporation RCLAMP2574N.TCT
- Part No.:
- RCLAMP2574N.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 10-UDFN Exposed Pad
- Datasheet:
-
RCLAMP2574N.TCT.pdf
- Description:
- TVS DIODE 2.5VWM 20VC SLP3020N10
- Quantity:
- Payment:
- Shipping:
Inventory:7,104
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Product details
Overview
RCLAMP2574N.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 25V-rated I/O or power lines in USB Type-C, USB PD, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 28V under 40A 8/20μs surge, maintains constant clamping voltage across temperature (−40°C to +125°C), and features 20mΩ dynamic resistance and 175pF junction capacitance.
For engineers reviewing the RCLAMP2574N.TCT datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, DFN-6 package layout guidance, real-world USB PD and load switch protection use cases, and validated alternative parts with documented functional differences.
Technical Context
The RCLAMP2574N.TCT 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 across 24A–40A peak pulse current-due to decreasing RDS(on) under surge stress.
It operates over −40°C to +125°C with stable 22V reverse stand-off voltage, 25–27.9V breakdown, and <600nA leakage at VRWM. Its 175pF capacitance at 22V/1MHz and 20mΩ dynamic resistance support high-speed data line protection without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - defines maximum continuous DC bus voltage it can protect without leakage or conduction |
| Clamping Voltage | 28 V @ 40A, 8/20μs - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surge |
| ESD Rating | ±30 kV contact & air (IEC 61000-4-2) - meets highest-level system-level ESD immunity requirements for consumer and industrial ports |
| Peak Pulse Current | 40 A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 surge immunity for industrial equipment |
| Junction Capacitance | 175 pF @ 22V, 1MHz - low enough for USB 2.0 and power-line protection; not suitable for USB 3.x SS lanes |
| Dynamic Resistance | 20 mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients |
| Package | DFN 1.6 × 1.6 × 0.55 mm, 6-lead - enables ultra-compact placement adjacent to connectors with minimal PCB area |
Pinout & Package
Package: DFN-6 (1.6 mm × 1.6 mm × 0.55 mm), RoHS-compliant, Pb-free, UL 94V-0 molding compound. Thermal pad not required; all GND pins must be connected via multiple vias for optimal surge current handling.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be shorted and connected to solid ground plane |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS or CC line); all three pins are internally paralleled and must be tied together at PCB level |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28V from 24A to 40A surge-eliminates design margin uncertainty vs. TVS diodes |
| FET-based shunt topology | Surge energy dissipated in low-RDS(on) channel instead of PN junction-enables higher IPP and better thermal stability |
| Temperature-stable performance | Clamping voltage variation <0.5V across −40°C to +125°C-ensures consistent protection in automotive and industrial environments |
| Low dynamic resistance | 20 mΩ measured between 1A–40A (8/20μs)-reduces voltage overshoot during sub-100ns ESD events |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 100 kHz & 5 kHz bursts)-protects against repetitive switching noise in motor drives and PLCs |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–22V VBUS lines in USB-C receptacles supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Primary high-energy EOS suppressor placed directly at connector, shunting lightning surges and hot-swap transients before reaching PD controller or e-fuse. Use Value: Maintains 28V clamping at full 40A surge-prevents latch-up or gate oxide damage in downstream SiC/GaN load switches and PD microcontrollers. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) exposed to field wiring in remote meters or robotics. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal FET during induced surges or accidental 48V miswiring. Use Value: Prevents catastrophic failure of the load switch by holding clamp voltage well below its absolute maximum drain-source rating (typically ≤30V). |
| IoT Edge Node Power Bus Protection | Notebook/Tablet VBUS Line Protection |
|
Use Scenario: Securing 12–24V DC input rails in battery-powered IoT gateways subjected to ESD from human touch and EFT from nearby AC motors. IC Role / Device Role / Timing Role: Single-device solution for combined ESD, EFT, and surge protection-replaces multi-stage TVS+MOV designs. Use Value: Reduces BOM count and board space by >60% versus discrete TVS + series impedance solutions while improving reliability. |
Use Scenario: Hardening USB-C port VBUS lines in thin-client notebooks where thermal headroom and layout density constrain protection options. IC Role / Device Role / Timing Role: Low-profile, low-capacitance protector mounted within 3mm of connector to minimize trace inductance and improve ESD response. Use Value: Enables robust 22V rail protection without degrading power delivery efficiency or requiring thermal relief pads. |
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 FET-based TDS architecture; 22V working voltage, identical 28V clamping at 40A, but rated for lower max junction temperature (+125°C vs. +150°C for RCLAMP2574N.TCT) | Valid for USB PD and industrial loads up to 22V; not rated for 25V systems or extended-temp industrial deployments | Select when operating voltage is strictly ≤22V and ambient temperature stays below +125°C-offers same surge performance in smaller footprint |
| SMAJ24A | Standard unidirectional TVS diode; 24V standoff, 38.9V clamping at 22.3A (8/20μs), 1.5Ω dynamic resistance, no temperature-stable clamping | Requires larger derating margin for high-temp operation; clamping rises >3V from −40°C to +125°C | Choose only for cost-sensitive, non-critical 24V lines where constant clamping and 40A surge capability are not required |
Compared with TDS2211P.C, RCLAMP2574N.TCT supports higher operating voltage (25V vs. 22V) and extended junction temperature (150°C), making it suitable for next-gen USB PD 3.1 and industrial 24V systems. Against SMAJ24A, it delivers 45% lower clamping voltage and 75× lower dynamic resistance-critical for protecting modern low-voltage power management ICs.
Availability
RCLAMP2574N.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT edge node power buses requiring stable component supply, long-term lifecycle assurance, and guaranteed RoHS/REACH compliance.
Supply support for RCLAMP2574N.TCT 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 high-performance analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The RCLAMP2574N.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–25V power and interface protection applications where stable clamping and temperature resilience are mandatory.
FAQ
What is the maximum continuous operating voltage for RCLAMP2574N.TCT?
The RCLAMP2574N.TCT has a reverse stand-off voltage (VRWM) of 22 V, meaning it can safely block up to 22 V DC continuously without significant leakage. Its 25 V designation reflects its ability to withstand transient overvoltages up to 25 V without breakdown-this is not a continuous rating. Always ensure system nominal voltage stays at or below 22 V for reliable long-term operation of RCLAMP2574N.TCT.
Does RCLAMP2574N.TCT require a thermal pad on the PCB?
No, RCLAMP2574N.TCT does not require a thermal pad. Unlike power MOSFETs or linear regulators, it dissipates surge energy in its low-RDS(on) FET channel rather than in a thermally constrained junction. The datasheet explicitly states "no thermal pad is needed," and recommends connecting all GND pins (1–3) to a solid ground plane using multiple vias to minimize inductance-not to enhance heat transfer. This simplifies layout for RCLAMP2574N.TCT in space-constrained designs.
Can RCLAMP2574N.TCT protect USB 3.2 SuperSpeed differential pairs?
No, RCLAMP2574N.TCT is not suitable for USB 3.2 SuperSpeed (5–10 Gbps) differential lanes. Its 175 pF junction capacitance would severely degrade signal integrity and fail eye diagram compliance. RCLAMP2574N.TCT is intended for VBUS, CC, SBU, or DP/DM lines in USB 2.0 mode. For SuperSpeed protection, Semtech recommends ultra-low-capacitance devices like RClamp3371ZC (<0.25 pF), which are specifically designed for high-speed data lines-RCLAMP2574N.TCT serves complementary, not overlapping, roles.
How does RCLAMP2574N.TCT differ from standard TVS diodes in surge response?
RCLAMP2574N.TCT uses an active FET-based shunt architecture triggered by a precision circuit, resulting in near-constant 27.5–28 V clamping from 1 A to 40 A surge current. In contrast, standard TVS diodes follow VC = VBR + IPP × RDYN, causing clamping voltage to rise linearly with current (e.g., SMAJ24A jumps from ~32 V to ~39 V across its rating). This makes RCLAMP2574N.TCT far more predictable for protecting sensitive 24 V-rated ICs under variable surge conditions.
Is RCLAMP2574N.TCT compatible with lead-free reflow profiles?
Yes, RCLAMP2574N.TCT is fully compatible with standard IPC/JEDEC J-STD-020D lead-free reflow profiles. Its DFN-6 package uses lead-free terminal finish and is rated for peak reflow temperatures up to 260°C for 30 seconds. The device meets RoHS and WEEE requirements, and its UL 94V-0 molding compound ensures process stability during standard SMT assembly-no special thermal profiling is needed for RCLAMP2574N.TCT placement.
RCLAMP2574N.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 10-UDFN Exposed Pad
- Series:
- RailClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.7V
- Voltage - Clamping (Max) @ Ipp:
- 20V
- Current - Peak Pulse (10/1000µs):
- 40A (8/20µs)
- Power - Peak Pulse:
- 1000W (1kW)
- Power Line Protection:
- Yes
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3.75pF @ 1MHz
- Operating Temperature:
- -55°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP3020N10
RCLAMP2574N.TCT FAQ
1.How can I place an order for RCLAMP2574N.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP2574N.TCT 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 RCLAMP2574N.TCT reliable?
The price and inventory of RCLAMP2574N.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP2574N.TCT is usually 5 days.
3.What payment methods are accepted for RCLAMP2574N.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP2574N.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP2574N.TCT?
RCLAMP2574N.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP2574N.TCT 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 RCLAMP2574N.TCT?
For technical support, including RCLAMP2574N.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP2574N.TCT requirements.
6.How does Aetrix verify that RCLAMP2574N.TCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP2574N.TCT 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 RCLAMP2574N.TCT meets industry standards.
7.What is the process for return or replacement of RCLAMP2574N.TCT?
All RCLAMP2574N.TCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP2574N.TCT, 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 RCLAMP2574N.TCT part is unused and in its original packaging.
Return procedure for RCLAMP2574N.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP2574N.TCT Tags
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