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Semtech Corporation TCLAMP2492S.C
- Part No.:
- TCLAMP2492S.C
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
TCLAMP2492S.C.pdf
- Description:
- 2-LINE 24V 35A 3.5PF SOT23-6L
- Quantity:
- Payment:
- Shipping:
Inventory:2,250
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Product details
Overview
TCLAMP2492S.C 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 ultra-low dynamic resistance of 20mΩ - deployed in USB PD, industrial load switch inputs, and IoT device bus protection.
For engineers reviewing the TCLAMP2492S.C datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and validated alternatives for 24V EOS protection design-in.
Technical Context
The TCLAMP2492S.C 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 - not linearly increasing - across the full 40A rated pulse range due to decreasing RDS(on).
It operates over –40°C to +125°C with stable 27.5–28V clamping at both 24A and 40A (1.2/50μs voltage + 8/20μs current combination waveform, RS = 2Ω), and maintains <600nA reverse leakage at 24V stand-off while delivering only 175pF junction capacitance at 1MHz and 24V bias.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24 V - matches nominal 24V bus systems including industrial power rails and USB PD extended voltage profiles. |
| Clamping Voltage | 27.5–28 V at 40A - ensures protected ICs (e.g., load switches, PD controllers) remain below damage thresholds even under worst-case surge. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial equipment and outdoor IoT nodes. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD robustness mandates without external shielding. |
| Dynamic Resistance | 20 mΩ - enables low-voltage-drop shunting, minimizing power dissipation and thermal stress during multi-pulse events. |
| Junction Capacitance | 175 pF at 24 V, 1 MHz - compatible with medium-speed data/power lines (e.g., USB PD CC/SBU, load switch enable inputs) without signal integrity degradation. |
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, tape-and-reel packaging (3,000 pcs/reel).
| 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 capability and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch VIN); parallel connection of all three pins ensures uniform current sharing and optimal clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28 V from 24A to 40A - eliminates design margin inflation required with traditional TVS diodes. |
| Temperature-stable protection | Clamping remains unchanged from –40°C to +125°C - removes thermal derating calculations for industrial and automotive under-hood applications. |
| Low dynamic resistance | 20 mΩ enables efficient energy diversion with minimal self-heating - supports repetitive surge testing per IEC 61000-4-5. |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 5 kHz & 100 kHz) - protects against fast burst noise in motor drives and PLC I/O modules. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 24V-capable USB PD power rails against lightning-induced surges and connector hot-plug transients. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the Type-C receptacle, shunting surge current to ground before it reaches the PD controller or DC-DC converter. Use Value: Maintains 27.5–28V clamping at 40A - keeps downstream silicon within safe operating area where standard TVS would exceed 35V at elevated temperature. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., HS2950P) exposed to 24V rail transients in remote meters or factory automation nodes. IC Role / Device Role / Timing Role: Primary front-end EOS protector, absorbing >1 kW peak pulse power (1120 W) to prevent gate oxide damage and latch-up in the load switch's internal FET. Use Value: 20 mΩ dynamic resistance limits voltage overshoot during fast-rising transients (<100 ns), reducing risk of destructive dv/dt-induced failure. |
| IoT Edge Node Power Rail Protection | Robotic Actuator Control Interface |
Use Scenario: Securing 24V auxiliary power inputs on battery-backed wireless sensor nodes deployed outdoors or near EMI sources. IC Role / Device Role / Timing Role: Single-component solution for combined ESD, EFT, and surge immunity - replaces multi-device TVS+MOV stacks with smaller footprint and tighter clamping. Use Value: 175 pF capacitance avoids signal distortion on shared power/data lines (e.g., PoE-powered sensors), while ±30 kV ESD rating prevents field failures during handling or deployment. |
Use Scenario: Protecting 24V control inputs on servo drivers and motor controllers subject to inductive kickback and cable discharge events. IC Role / Device Role / Timing Role: Fast-acting shunt device triggered by transient overvoltage, limiting bus voltage excursion to ≤28 V during MOSFET turn-off spikes. Use Value: Stable clamping across –40°C to +125°C ensures consistent protection in uncontrolled environments - critical for robotic joints operating in cold warehouses or hot manufacturing floors. |
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 30A (not 40A) peak pulse current and slightly higher clamping (28.5V @ 30A). | Valid for lower-energy industrial I/O or consumer USB PD implementations where 40A surge margin is not required. | Select TDS2411P.C when cost optimization is prioritized and system-level surge testing confirms ≤30A compliance. |
| uClamp2411ZA.TCT | TVS-based solution with 24V working voltage, ±30kV ESD, but higher dynamic resistance (~150mΩ) and clamping voltage rising to ~36V at 30A. | Suitable for space-constrained CC/SBU line protection where low capacitance (0.35pF) matters more than clamping precision. | Choose uClamp2411ZA.TCT only for secondary protection or non-critical 24V signals where clamping voltage margin allows ≥36V excursion. |
Compared with TDS2411P.C and uClamp2411ZA.TCT, TCLAMP2492S.C delivers superior surge robustness (40A vs. 30A/30A), tighter clamping stability (27.5–28V vs. 28.5V/36V), and lower dynamic resistance (20mΩ vs. 25mΩ/150mΩ), making it the preferred choice for mission-critical 24V bus protection where reliability under repeated high-energy transients is mandatory.
Availability
TCLAMP2492S.C is available at Aetrix Electronics and suitable for USB PD power delivery systems, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for TCLAMP2492S.C 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 TCLAMP2492S.C belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-reliability 24V industrial, automotive, and USB PD applications demanding stable clamping under thermal and current stress.
FAQ
What is the maximum operating temperature range for TCLAMP2492S.C?
TCLAMP2492S.C operates reliably from –40°C to +125°C. Its clamping voltage remains stable across this full range - measured at 27.5–28V at 40A - eliminating thermal derating calculations required for standard TVS diodes whose clamping rises significantly with temperature. This makes TCLAMP2492S.C especially suited for under-hood automotive modules and industrial control cabinets.
Does TCLAMP2492S.C meet IEC 61000-4-5 surge immunity standards?
Yes, TCLAMP2492S.C is rated for 40A peak pulse current using the 8/20μs waveform per IEC 61000-4-5, and supports the common industrial ±1kV test condition (1.2/50μs voltage + 8/20μs current, RS = 42Ω). Its 1120W peak pulse power rating and low 20mΩ dynamic resistance ensure compliance in harsh electromagnetic environments such as factory floors and outdoor IoT deployments.
How does TCLAMP2492S.C differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes - whose clamping voltage increases linearly with peak pulse current (VC = VBR + IPP × RDYN) - TCLAMP2492S.C uses a surge-rated FET and precision trigger circuit to maintain near-constant clamping (27.5–28V) from 24A to 40A. This eliminates the need to overspecify IPP to meet voltage safety margins, simplifying design validation for TCLAMP2492S.C in 24V systems.
What is the recommended PCB layout for TCLAMP2492S.C?
Place TCLAMP2492S.C as close as possible to the protected connector or entry point. Connect all three IN pins (4, 5, 6) via a single low-inductance trace to the protected 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 maximizes surge current handling and minimizes voltage overshoot during fast transients.
Is TCLAMP2492S.C RoHS-compliant and halogen-free?
Yes, TCLAMP2492S.C is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its DFN package uses UL 94V-0 rated molding compound and lead-free terminal finish, meeting environmental and safety requirements for global industrial and consumer electronics manufacturing.
TCLAMP2492S.C Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SOT-23-6
- Series:
- TransClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- -
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.4V
- Voltage - Clamping (Max) @ Ipp:
- 12V
- Current - Peak Pulse (10/1000µs):
- 35A (8/20µs)
- Power - Peak Pulse:
- 420W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 3pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TCLAMP2492S.C FAQ
1.How can I place an order for TCLAMP2492S.C through Aetrix?
Please submit a Request for Quotation (RFQ) for TCLAMP2492S.C 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 TCLAMP2492S.C reliable?
The price and inventory of TCLAMP2492S.C are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCLAMP2492S.C is usually 5 days.
3.What payment methods are accepted for TCLAMP2492S.C?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCLAMP2492S.C transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCLAMP2492S.C?
TCLAMP2492S.C orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCLAMP2492S.C 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 TCLAMP2492S.C?
For technical support, including TCLAMP2492S.C datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCLAMP2492S.C requirements.
6.How does Aetrix verify that TCLAMP2492S.C is sourced from the original manufacturer or authorized distributors?
All TCLAMP2492S.C 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 TCLAMP2492S.C meets industry standards.
7.What is the process for return or replacement of TCLAMP2492S.C?
All TCLAMP2492S.C units undergo pre-shipment inspection (PSI). If there is an issue with TCLAMP2492S.C, 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 TCLAMP2492S.C part is unused and in its original packaging.
Return procedure for TCLAMP2492S.C:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TCLAMP2492S.C Tags
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