My Inquiry
My Account
Semtech Corporation TCLAMP2472S.TCT
- Part No.:
- TCLAMP2472S.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
TCLAMP2472S.TCT.pdf
- Description:
- TVS DIODE 24VWM 7.5VC SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:8,989
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TCLAMP2472S.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 24V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and 20mΩ dynamic resistance. It protects USB PD, load switch inputs, and industrial bus interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the TCLAMP2472S.TCT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world USB Type-C and load switch protection use cases, and two validated alternative parts with documented functional trade-offs.
Technical Context
The TCLAMP2472S.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 across 24–40A (8/20μs) due to decreasing RDS(on) under surge conditions.
It operates from −40°C to +125°C with <600nA reverse leakage at 24V, 175pF junction capacitance at 22V/1MHz, and is rated for 1120W peak pulse power. The device targets unsymmetrical line protection and meets IEC 61000-4-4 (±4kV EFT) and IEC 61000-4-5 (±1kV, 1.2/50μs + 8/20μs combo wave).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24 V - Maximum continuous DC operating voltage on protected line without leakage or degradation. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - Limits transient overvoltage to safe levels for downstream 24V-rated ICs like USB PD controllers. |
| Peak Pulse Current | 40 A (8/20μs) - Withstands high-energy surges per IEC 61000-4-5, enabling compliance in industrial and USB PD applications. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Eliminates need for secondary ESD stages in connector-facing designs. |
| Dynamic Resistance | 20 mΩ - Ensures minimal voltage rise under surge, directly enabling stable clamping independent of current magnitude. |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - Low enough for 24V power rail protection; not suitable for high-speed data lines (>100 Mbps). |
Pinout & Package
Package: DFN 1.6 mm × 1.6 mm × 0.55 mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish. Pin 1 marked with laser dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current handling and minimize inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); parallel connection ensures uniform current sharing and optimal clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5 V across full 24–40A surge range - avoids overvoltage failure of sensitive 24V ICs under worst-case surge + temperature. |
| Low dynamic resistance | 20 mΩ enables sub-1V IR drop at 40A - critical for maintaining clamping below 28V while dissipating >1 kW peak power. |
| High-temperature stability | Clamping voltage remains flat from −40°C to +125°C - eliminates derating calculations required for standard TVS diodes. |
| Integrated FET + trigger | Replaces discrete TVS + MOSFET active clamp circuits - reduces BOM count, PCB area, and layout complexity for 24V rail protection. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–24V VBUS lines in USB-C receptacles exposed to lightning-induced surges and hot-plug ESD. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed adjacent to connector, clamping transients before they reach PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping across −40°C to +125°C and 40A surge - prevents damage to 24V-tolerant PD ICs without thermal derating. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., ON Semi NIS513x, TI TPS259x) against 1kV/42Ω surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by internal FET gate oxide and drain-source junction. Use Value: Keeps clamped voltage below 28V - well under typical 30V+ absolute maximum ratings of load switch FETs, avoiding catastrophic failure. |
| IoT Edge Node Power Rail Protection | Robotic Actuator Control Module Input |
Use Scenario: Securing 24V auxiliary power rails in battery-powered IoT gateways subjected to ESD during field servicing and EFT noise in factory environments. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS + RC filter, placed at board edge near power entry. Use Value: Delivers ±4kV EFT immunity and ±30kV ESD in 1.6×1.6mm footprint - enables compact, ruggedized enclosure design without sacrificing protection margin. |
Use Scenario: Protecting 24V logic supply inputs of motor driver control boards in collaborative robots exposed to cable discharge and inductive kickback. IC Role / Device Role / Timing Role: Fast-acting shunt suppressor that diverts energy away from MCU GPIOs, level shifters, and isolated power supplies. Use Value: 20mΩ RDYN ensures sub-1V overshoot during 40A transients - preserves signal integrity and prevents latch-up in downstream digital circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2411P.C | Same 24V working voltage, identical DFN-6 package and pinout, but rated for 24A IPP (vs. 40A for TCLAMP2472S.TCT). | Suitable for lower-energy environments (e.g., consumer USB-C ports), not recommended for industrial 1kV surge compliance. | Select when cost sensitivity outweighs need for full 40A surge margin; verify system-level IEC 61000-4-5 pass/fail with actual test waveform. |
| SP1003-024 | Standard unidirectional TVS diode (24V VRWM, 38.9V VC @ 40A), higher clamping voltage, no FET-based constant-clamp behavior. | Higher clamping increases risk to 24V ICs at elevated temperature; requires larger layout area and lacks EFT robustness. | Use only if legacy design reuse mandates TVS topology; expect 10–12V higher clamping than TCLAMP2472S.TCT at 40A and 125°C. |
Compared with TDS2411P.C and SP1003-024, TCLAMP2472S.TCT delivers superior 40A surge capability with flat 27.5–28V clamping across temperature - making it the only option qualified for demanding industrial USB PD and load switch protection where voltage margin is constrained.
Availability
TCLAMP2472S.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and guaranteed surge performance.
Supply support for TCLAMP2472S.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 protection, sensing, and signal integrity.
The TCLAMP2472S.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family - engineered to replace traditional TVS diodes in 12–36V industrial, automotive, and USB-C applications where stable clamping and temperature-invariant surge response are mandatory.
FAQ
What is the maximum continuous operating voltage for TCLAMP2472S.TCT?
The TCLAMP2472S.TCT has a reverse stand-off voltage (VRWM) of 24 V, meaning it can continuously block up to 24 V DC without significant leakage. This makes TCLAMP2472S.TCT appropriate for 24V nominal power rails such as USB PD VBUS, industrial 24V control lines, and robotic actuator supplies - provided transient events remain within its 40A/1120W rating.
How does TCLAMP2472S.TCT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), TCLAMP2472S.TCT uses a triggered FET architecture that maintains clamping voltage between 27.5 V and 28 V across its full 24–40A surge range and from −40°C to +125°C - a key advantage for protecting voltage-sensitive 24V ICs in harsh thermal environments.
Can TCLAMP2472S.TCT be used on high-speed data lines like USB SuperSpeed or PCIe?
No - TCLAMP2472S.TCT has 175 pF junction capacitance at 22 V, which is too high for signal integrity on high-speed differential pairs. It is intended exclusively for 24V power or low-frequency I/O lines. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25 pF), not TCLAMP2472S.TCT.
What is the recommended PCB layout for TCLAMP2472S.TCT to achieve full 40A surge rating?
To achieve the full 40A (8/20μs) rating, all three GND pins (1, 2, 3) and all three IN pins (4, 5, 6) must be connected with short, wide copper traces. Place TCLAMP2472S.TCT within 5 mm of the protected connector, use ≥4 vias per GND pin to internal ground plane, and avoid stubs or splits in the IN/GND paths - layout deviations directly reduce measured surge current capability.
Does TCLAMP2472S.TCT meet IEC 61000-4-5 for ±1kV surge testing?
Yes - TCLAMP2472S.TCT is rated for ±1kV (1.2/50μs voltage + 8/20μs current, RS = 42 Ω) on unsymmetrical lines, satisfying common industrial surge immunity requirements. Its 27.5–28V clamping at 40A ensures protected circuits remain below 30V during test, preserving functionality of 24V-rated components without additional series impedance.
TCLAMP2472S.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SOT-23-6
- Series:
- TransClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 27V
- Voltage - Clamping (Max) @ Ipp:
- 7.5V (Typ)
- Current - Peak Pulse (10/1000µs):
- 20A
- Power - Peak Pulse:
- 150W
- Power Line Protection:
- Yes
- Applications:
- Ethernet, Telecom
- Capacitance @ Frequency:
- 2pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TCLAMP2472S.TCT FAQ
1.How can I place an order for TCLAMP2472S.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TCLAMP2472S.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 TCLAMP2472S.TCT reliable?
The price and inventory of TCLAMP2472S.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCLAMP2472S.TCT is usually 5 days.
3.What payment methods are accepted for TCLAMP2472S.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCLAMP2472S.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCLAMP2472S.TCT?
TCLAMP2472S.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCLAMP2472S.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 TCLAMP2472S.TCT?
For technical support, including TCLAMP2472S.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCLAMP2472S.TCT requirements.
6.How does Aetrix verify that TCLAMP2472S.TCT is sourced from the original manufacturer or authorized distributors?
All TCLAMP2472S.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 TCLAMP2472S.TCT meets industry standards.
7.What is the process for return or replacement of TCLAMP2472S.TCT?
All TCLAMP2472S.TCT units undergo pre-shipment inspection (PSI). If there is an issue with TCLAMP2472S.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 TCLAMP2472S.TCT part is unused and in its original packaging.
Return procedure for TCLAMP2472S.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TCLAMP2472S.TCT 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 …
