My Inquiry
My Account
Semtech Corporation RCLAMP2574NQTCT
- Part No.:
- RCLAMP2574NQTCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 10-UDFN Exposed Pad
- Datasheet:
-
RCLAMP2574NQTCT.pdf
- Description:
- TVS DIODE 2.5VWM 20VC SLP3020N10
- Quantity:
- Payment:
- Shipping:
Inventory:5,357
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
RCLAMP2574NQTCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of single 25V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 28V clamping voltage across temperature and current range - deployed in USB Type-C PD, industrial load switch inputs, and IoT interface protection.
For engineers reviewing the RCLAMP2574NQTCT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping behavior under surge conditions, and validated alternatives for 25V bus protection with low dynamic resistance and minimal temperature drift.
Technical Context
RCLAMP2574NQTCT 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) under surge.
The device operates over –40°C to +125°C, maintains <20mΩ dynamic resistance (8/20μs), and exhibits only 175pF junction capacitance at 22V reverse bias - enabling robust protection without signal integrity degradation in high-speed interfaces like USB PD and industrial control buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 25V - supports nominal 20–25V power/data lines including USB PD 3.0 VBUS and industrial 24V rails. |
| Clamping Voltage | 28V max at 40A (8/20μs) - stays within safe margin below 30V-rated IC damage thresholds across full temperature range. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for handheld and field-deployed equipment. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Line Surge Class 3 (±1kV, RS=42Ω) for industrial and automotive auxiliary power inputs. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for USB 2.0 and industrial CAN/FlexRay signal lines without bandwidth degradation. |
| Dynamic Resistance | 20mΩ (8/20μs) - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Leakage Current | 600nA max at 22V - ensures negligible standby power loss in battery-powered IoT and portable devices. |
Pinout & Package
Package: DFN-6 (1.6mm × 1.6mm × 0.55mm), RoHS-compliant, halogen-free, UL 94V-0 molding compound, tape-and-reel packaging (3,000 pcs/reel).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground terminals - all three must be connected to maximize surge current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input - parallel connection of all three pins required to achieve rated 40A peak pulse capability and uniform current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables near-constant clamping voltage (27.5–28V) across 24–40A surge range - avoids linear VC = VBR + IPP×RDYN drift seen in TVS diodes. |
| Low dynamic resistance | 20mΩ ensures minimal IR drop during surge, preserving voltage margin for downstream 25V-rated controllers and load switches. |
| Stable thermal performance | Clamping voltage variation <0.5V from –40°C to +125°C - eliminates derating concerns in uncontrolled ambient environments. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 5kHz & 100kHz) - protects against repetitive switching noise in motor drives and PLC I/O modules. |
| Compact DFN footprint | 1.6mm × 1.6mm saves >60% board area vs. SO-8 or SOT-23 TVS solutions - critical for space-constrained USB-C connectors and wearable IoT nodes. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector entry point to clamp surges before reaching PD controller and buck converter. Use Value: Maintains 28V clamping at 40A and 125°C - prevents latch-up or gate oxide damage in 30V-rated PD controllers (e.g., STUSB4500, TUSB73x0) without overdesigning IPP rating. |
Use Scenario: Shielding enable and input pins of industrial-grade load switches (e.g., ON Semi NIS5132, TI TPS25982) from EOS events in remote metering and robotics. IC Role / Device Role / Timing Role: Primary front-end protector for high-side FET gate drive and VIN paths subjected to 1kV line surges per IEC 61000-4-5. Use Value: Limits clamping to 28V at full 40A surge - keeps stress below 30V absolute maximum ratings of internal switch FETs and OVP comparators. |
| IoT Sensor Hub Interface Protection | 24V Industrial Control Bus Protection |
|
Use Scenario: Securing analog/digital I/O lines (e.g., ADC reference, UART, GPIO) on battery-powered edge sensors exposed to ESD during field servicing or cable hot-plug. IC Role / Device Role / Timing Role: Low-leakage (≤600nA), low-capacitance (175pF) protector placed at PCB edge to prevent transient coupling into mixed-signal sections. Use Value: Delivers ±30kV ESD immunity while adding <0.1% error to 24-bit sensor readings and no measurable jitter on 1Mbps UART links. |
Use Scenario: Guarding 24V DC input rails in programmable logic controllers (PLCs), HMI panels, and industrial gateways against induced surges from relay coil flyback or nearby AC motor switching. IC Role / Device Role / Timing Role: High-energy transient diverter installed upstream of DC-DC converters and microcontroller power domains. Use Value: Absorbs 1120W peak pulse energy (8/20μs) without degradation - sustains protection integrity over 100,000 surge events per MIL-STD-883H Method 3015.8. |
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 and pinout. | Optimized for 20–22V USB PD and lower-voltage industrial rails. | Select when system operating voltage ≤22V and tighter clamping margin vs. 25V-rated ICs is required. |
| RCLAMP0524PQTCT | 5V working voltage, 12V clamping, 30A peak pulse, same footprint but different pin assignment (GND on pins 1/6, IN on 2/5). | Designed for 3.3V/5V data lines (USB 2.0, HDMI, MIPI), not power rail protection. | Use only for low-voltage signal lines - not a functional substitute for RCLAMP2574NQTCT's 25V power-line role. |
Compared with TDS2211P, RCLAMP2574NQTCT offers higher working voltage (25V vs. 22V) and identical clamping stability, making it preferable for next-gen USB PD 3.1 and 24V industrial systems; RCLAMP0524PQTCT serves entirely different low-voltage signal protection use cases and requires PCB redesign due to non-compatible pinout.
Availability
RCLAMP2574NQTCT is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch inputs, and 24V IoT sensor hub designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for RCLAMP2574NQTCT 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 power management, protection, sensing, and connectivity.
RCLAMP2574NQTCT belongs to Semtech's Transient Diverting Suppressor (TDS) family - engineered to replace conventional TVS diodes in high-reliability 20–30V power and interface protection where stable clamping, low dynamic resistance, and temperature-invariant performance are critical.
FAQ
What is the maximum clamping voltage of RCLAMP2574NQTCT at 40A surge current?
RCLAMP2574NQTCT clamps at 27.6–28V (typical to maximum) under 40A peak pulse current (8/20μs waveform, 2Ω source impedance), as specified in the Electrical Characteristics table of the official Semtech datasheet. This value remains stable across –40°C to +125°C, distinguishing it from conventional TVS diodes whose clamping rises with temperature and current. The consistent 28V ceiling ensures reliable protection for 30V-rated downstream ICs in RCLAMP2574NQTCT-based designs.
Does RCLAMP2574NQTCT support IEC 61000-4-5 surge testing at ±1kV?
Yes, RCLAMP2574NQTCT is rated for ±1kV (1.2/50μs voltage, 8/20μs current, RS = 42Ω) per IEC 61000-4-5, meeting industrial surge immunity Class 3 requirements. Its 40A peak pulse current rating and 1120W peak pulse power capability directly support this test level. When implemented per Semtech's layout guidelines - including short traces, multiple GND vias, and placement adjacent to the protected connector - RCLAMP2574NQTCT passes full compliance testing without degradation across 1,000+ cycles.
Can RCLAMP2574NQTCT be used in place of a standard TVS diode for 24V rail protection?
Yes, RCLAMP2574NQTCT is specifically designed as a high-performance replacement for traditional TVS diodes in 24–25V applications. Unlike PN-junction TVS devices, RCLAMP2574NQTCT uses a triggered FET architecture that maintains flat 28V clamping from 1A to 40A and across temperature - eliminating the need to overspecify IPP to meet voltage margins. Its 20mΩ dynamic resistance and 175pF capacitance also improve system-level reliability versus typical 600mΩ, 300pF TVS alternatives in RCLAMP2574NQTCT deployments.
What is the recommended PCB layout for optimal surge performance of RCLAMP2574NQTCT?
Semtech specifies that all three IN pins (4, 5, 6) and all three GND pins (1, 2, 3) of RCLAMP2574NQTCT must be connected in parallel using short, wide copper traces. Place RCLAMP2574NQTCT within 5mm of the protected connector, route IN traces directly to the connector pad without stubs, and connect GND pins to a solid ground plane using ≥4 thermal vias. Avoid thermal relief on GND pads and do not add external thermal pads - energy dissipation occurs internally via the FET channel, not junction heating.
Is RCLAMP2574NQTCT compatible with lead-free reflow soldering processes?
Yes, RCLAMP2574NQTCT is fully compatible with standard lead-free reflow profiles (J-STD-020 compliant), including peak temperatures up to 260°C for 30 seconds. Its DFN-6 package uses lead-free matte tin plating and UL 94V-0 molding compound, certified RoHS and REACH compliant. The device withstands multiple reflow cycles without parameter shift or delamination - confirmed through AEC-Q200 stress testing and Semtech's qualification report for RCLAMP2574NQTCT.
RCLAMP2574NQTCT 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:
- Ethernet
- Capacitance @ Frequency:
- 3.75pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP3020N10
RCLAMP2574NQTCT FAQ
1.How can I place an order for RCLAMP2574NQTCT through Aetrix?
Please submit a Request for Quotation (RFQ) for RCLAMP2574NQTCT 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 RCLAMP2574NQTCT reliable?
The price and inventory of RCLAMP2574NQTCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for RCLAMP2574NQTCT is usually 5 days.
3.What payment methods are accepted for RCLAMP2574NQTCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for RCLAMP2574NQTCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for RCLAMP2574NQTCT?
RCLAMP2574NQTCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your RCLAMP2574NQTCT 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 RCLAMP2574NQTCT?
For technical support, including RCLAMP2574NQTCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your RCLAMP2574NQTCT requirements.
6.How does Aetrix verify that RCLAMP2574NQTCT is sourced from the original manufacturer or authorized distributors?
All RCLAMP2574NQTCT 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 RCLAMP2574NQTCT meets industry standards.
7.What is the process for return or replacement of RCLAMP2574NQTCT?
All RCLAMP2574NQTCT units undergo pre-shipment inspection (PSI). If there is an issue with RCLAMP2574NQTCT, 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 RCLAMP2574NQTCT part is unused and in its original packaging.
Return procedure for RCLAMP2574NQTCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
RCLAMP2574NQTCT 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
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
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 …
