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Semtech Corporation TCLAMP2502N.TCT
- Part No.:
- TCLAMP2502N.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 10-UFDFN Exposed Pad
- Datasheet:
-
TCLAMP2502N.TCT.pdf
- Description:
- TVS DIODE 2.5VWM 25VC SLP2626P10
- Quantity:
- Payment:
- Shipping:
Inventory:6,538
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Product details
Overview
TCLAMP2502N.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 25V-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 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 TCLAMP2502N.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 TCLAMP2502N.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 over –40°C to +125°C with <600nA reverse leakage at 25V, 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) standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 25 V - Maximum continuous DC operating voltage on protected line without triggering |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - Limits transient voltage seen by downstream ICs to safe level |
| Peak Pulse Current | 40 A (8/20μs) - Withstands high-energy surges per IEC 61000-4-5 without degradation |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Survives direct human-body ESD events in end-user environments |
| Dynamic Resistance | 20 mΩ - Enables flat clamping curve; reduces voltage rise under increasing surge current |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - Low enough for USB PD power bus protection without signal integrity impact |
| Operating Temp | –40°C to +125°C - Maintains stable clamping performance across automotive and industrial ambient ranges |
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/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground terminals - all three must be connected to minimize parasitic inductance and maximize surge current handling |
| 4, 5, 6 | IN | Protected line input - connects directly to VBus or power/data line; all three pins conduct surge current in parallel |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5 V across full 24–40A surge range - eliminates design margin inflation needed with TVS diodes |
| FET-based shunt topology | Surge energy dissipated in low-RDS(on) channel instead of PN junction - enables higher reliability and thermal stability |
| Low dynamic resistance | 20 mΩ measured between 1A–40A - ensures minimal IR drop during surge, preserving clamping accuracy |
| High-temp stable performance | Clamping voltage drift <1% from –40°C to +125°C - removes need for derating at elevated ambient temperatures |
| Compact DFN footprint | 1.6 mm × 1.6 mm area - saves >60% board space vs. comparable SO-8 or SOT-23 TVS solutions |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–25V VBus lines in USB-C PD ports against lightning-induced surges and connector hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed adjacent to connector, clamping transients before they reach PD controller or buck converter. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents overvoltage damage to 30V-rated PD controllers without overspecifying IPP rating. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., HS2950P) exposed to field wiring surges. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage across internal FET gate oxide and drain-source junction. Use Value: Prevents latch-up or permanent failure of load switch during ±1kV/42Ω IEC 61000-4-5 surges by holding clamping below 30V absolute max rating. |
| IoT Device Power Rail Protection | Robotic System DC Power Distribution |
|
Use Scenario: Securing 24V auxiliary rails in battery-powered IoT gateways subjected to ESD during enclosure servicing. IC Role / Device Role / Timing Role: Standalone rail protector with no external bias or control signals - operates autonomously during fast-rising transients. Use Value: Delivers ±30kV ESD immunity while adding only 175pF capacitance - avoids signal coupling or startup delay in always-on monitoring circuits. |
Use Scenario: Protecting motor driver supply inputs in mobile robots where long PCB traces act as surge antennas during ESD or inductive switching. IC Role / Device Role / Timing Role: Low-inductance parallel-connected shunt that diverts surge current directly to ground plane via three GND pins. Use Value: Achieves 40A surge capability with <0.5 nH total loop inductance when laid out per Semtech guidelines - minimizes V = L·di/dt overshoot. |
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, identical 40A/28V clamping, same DFN-6 package | Optimized for 20–22V USB PD buses; lower VRWM may limit use on 24V industrial rails | Select when protecting ≤22V systems where tighter VRWM margin improves noise immunity |
| SMAJ28A | 28V standoff, 400W peak power, 12.5A IPP (8/20μs), higher clamping (~48V at 12.5A) | Standard TVS diode - clamping rises linearly with current and temperature; requires larger derating margin | Choose only if cost sensitivity outweighs clamping stability requirements and board space permits larger SMA package |
Compared with TDS2211P, TCLAMP2502N.TCT offers higher 25V working voltage for 24V industrial rails, while SMAJ28A provides lower-cost TVS protection but with significantly higher and temperature-sensitive clamping - making TCLAMP2502N.TCT the preferred choice for stable, compact, high-reliability EOS suppression.
Availability
TCLAMP2502N.TCT is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch protection, and IoT power rail hardening requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for TCLAMP2502N.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.
TCLAMP2502N.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability power and interface protection where flat clamping, temperature stability, and compact size are critical.
FAQ
What is the maximum continuous operating voltage for TCLAMP2502N.TCT?
The TCLAMP2502N.TCT has a reverse stand-off voltage (VRWM) of 25 V, meaning it can continuously withstand up to 25 V DC on the protected line without entering conduction. This makes it suitable for 24V industrial rails and USB PD 3.0 extended power range applications where nominal bus voltage reaches 20–25V.
How does TCLAMP2502N.TCT achieve stable clamping across temperature and current?
TCLAMP2502N.TCT uses a surge-rated FET activated by a precision trigger circuit. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise - resulting in clamping voltage variation of less than 0.5 V from 24A to 40A and minimal drift from –40°C to +125°C. This behavior is confirmed in Figure 3 of the official datasheet.
Can TCLAMP2502N.TCT replace a standard TVS diode in an existing design?
Yes, TCLAMP2502N.TCT can replace many 25V-rated TVS diodes, but layout changes are required: all six pins must be connected (three GND and three IN), and placement must be near the protected connector to minimize trace inductance. Its DFN-6 footprint differs from common SOD-123 or SMA packages, so PCB redesign is necessary.
What is the junction capacitance of TCLAMP2502N.TCT, and does it affect USB PD signal integrity?
TCLAMP2502N.TCT has a junction capacitance of 175 pF at 22 V and 1 MHz. This value applies to the power bus (VBus), not high-speed data lanes. Since USB PD power negotiation occurs at low frequency (<1 MHz), this capacitance introduces negligible impedance and does not impair communication - unlike high-speed lines where sub-0.5pF devices like RClamp3371ZC are used.
Is TCLAMP2502N.TCT compliant with industry surge immunity standards?
Yes, TCLAMP2502N.TCT is explicitly rated for IEC 61000-4-2 (±30kV ESD), IEC 61000-4-4 (±4kV EFT), and IEC 61000-4-5 (±1kV, 1.2/50μs voltage waveform with 42Ω source). Its 40A 8/20μs rating satisfies Level 4 industrial surge requirements per IEC 61000-4-5, as verified in the Absolute Maximum Ratings table.
TCLAMP2502N.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 10-UFDFN Exposed Pad
- Series:
- TransClamp™
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Steering (Rail to Rail)
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- 25V
- Current - Peak Pulse (10/1000µs):
- 95A (8/20µs)
- Power - Peak Pulse:
- 2500W (2.5kW)
- Power Line Protection:
- Yes
- Applications:
- Ethernet, Telecom
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP2626P10 (2.6x2.6)
TCLAMP2502N.TCT FAQ
1.How can I place an order for TCLAMP2502N.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for TCLAMP2502N.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 TCLAMP2502N.TCT reliable?
The price and inventory of TCLAMP2502N.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TCLAMP2502N.TCT is usually 5 days.
3.What payment methods are accepted for TCLAMP2502N.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TCLAMP2502N.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TCLAMP2502N.TCT?
TCLAMP2502N.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TCLAMP2502N.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 TCLAMP2502N.TCT?
For technical support, including TCLAMP2502N.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TCLAMP2502N.TCT requirements.
6.How does Aetrix verify that TCLAMP2502N.TCT is sourced from the original manufacturer or authorized distributors?
All TCLAMP2502N.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 TCLAMP2502N.TCT meets industry standards.
7.What is the process for return or replacement of TCLAMP2502N.TCT?
All TCLAMP2502N.TCT units undergo pre-shipment inspection (PSI). If there is an issue with TCLAMP2502N.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 TCLAMP2502N.TCT part is unused and in its original packaging.
Return procedure for TCLAMP2502N.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TCLAMP2502N.TCT Tags
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