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Semtech Corporation UCLAMP2511T.TCT
- Part No.:
- UCLAMP2511T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP2511T.TCT.pdf
- Description:
- TVS DIODE 2.5VWM 8VC SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:71,018
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Product details
Overview
UCLAMP2511T.TCT from Semtech is a transient diverting suppressor designed for single-line 25V EOS protection in high-reliability I/O and power bus applications. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 28V under 40A (8/20μs), maintains <20mΩ dynamic resistance, and operates from –40°C to +125°C - enabling robust USB Type-C PD and industrial load switch input protection.
For engineers reviewing the UCLAMP2511T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature and peak pulse current, low leakage (<600nA at 25V), DFN-6 package footprint, and compatibility with 22–25V operating rails in USB PD, IoT, and industrial equipment designs.
Technical Context
The UCLAMP2511T.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) from 24A to 40A due to decreasing RDS(on) under surge conditions.
It supports unsymmetrical line protection per IEC 61000-4-5 (±1kV, 1.2/50μs, RS = 42Ω), withstands ±4kV EFT per IEC 61000-4-4, and exhibits stable junction capacitance (175pF at 22V, 1MHz) and reverse leakage (130–600nA) across –40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 25 V - defines maximum continuous DC or RMS operating voltage on protected line without device activation |
| Clamping Voltage | 28 V at 40 A (8/20μs) - ensures downstream ICs (e.g., USB PD controllers rated ≤30V) remain below damage threshold during worst-case surge |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - meets highest industrial and consumer ESD immunity requirements without degradation |
| Peak Pulse Current | 40 A (8/20μs) - supports compliance with IEC 61000-4-5 Level 3/4 surge immunity for industrial and automotive-grade interfaces |
| Dynamic Resistance | 20 mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - low enough for USB 2.0 signal integrity while providing effective high-energy suppression |
Pinout & Package
UCLAMP2511T.TCT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with UL 94V-0 molding compound. The package features three dedicated ground terminals and three parallel input terminals to maximize surge current handling and minimize parasitic inductance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Low-inductance ground return path; all three pins must be connected to solid ground plane for full 40A rating |
| 4, 5, 6 | IN | Parallel-connected input node for protected line (e.g., VBUS or power rail); enables distributed current sharing and thermal derating mitigation |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS diodes with active shunt architecture for flat clamping voltage across 24–40A and –40°C to +125°C |
| Ultra-low dynamic resistance | 20 mΩ ensures minimal voltage rise during surge events, reducing stress on downstream FETs and controllers |
| High-energy surge rating | 1120 W peak pulse power (8/20μs) supports industrial-level lightning and AC-line coupled surges |
| Low leakage & stable capacitance | ≤600 nA IR at 25V and 175 pF CJ enable reliable operation in battery-powered and high-speed data line applications |
Applications
| USB Type-C Power Delivery | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–25V VBUS lines in USB-C receptacles supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Primary EOS suppressor placed directly at connector, clamping transients before reaching PD controller and load switch. Use Value: Maintains 28V clamping at 40A and 125°C - avoids overvoltage damage to PD controllers (e.g., FUSB302, TUSB73x) where 30V absolute max is typical. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., ON Semi NIS5132, TI TPS25982) against lightning-induced surges in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient shunt that limits voltage seen by internal FET gate oxide and current-sense circuitry. Use Value: Prevents latch-up or gate rupture in load switches by holding clamping voltage below 30V even at full 40A surge and elevated ambient temperatures. |
| IoT Edge Node Power Rails | Storage Device DC Power Inputs |
Use Scenario: Securing 24V auxiliary power inputs on battery-backed smart sensors and gateway modules exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Standalone overvoltage protector on unregulated DC input, replacing bulkier TVS arrays or varistors. Use Value: 1.6×1.6mm DFN footprint saves >60% board area vs. discrete 22V TVS solutions while delivering superior temperature stability and lower leakage. |
Use Scenario: Hardening 24V DC inputs of NVMe SSD enclosures and SAS backplanes against hot-plug transients and system-level ESD coupling. IC Role / Device Role / Timing Role: Bus-level surge clamp positioned between power connector and local DC-DC converter input. Use Value: 175pF capacitance avoids signal integrity issues on adjacent high-speed traces; ±30kV ESD rating exceeds EN 61000-4-2 Level 4 for ruggedized storage systems. |
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 | 22V working voltage, identical DFN-6 package and 40A rating; clamps at 28V but optimized for ≤22V rails | Better suited for legacy 20V USB PD or 24V industrial buses with tighter voltage margins | Select when design operates ≤22V and requires same footprint and thermal performance as UCLAMP2511T.TCT |
| UCLAMP3301T.TCT | 33V working voltage, same architecture and package; higher VRWM trades off slightly higher clamping (~36V at 40A) | Targeted at 28–33V systems like PoE++ PSEs or 32V automotive body electronics | Choose for 33V nominal rails where 25V devices risk premature conduction during normal operation |
Compared with TDS2211P.C and UCLAMP3301T.TCT, UCLAMP2511T.TCT uniquely balances 25V operating margin, 28V clamping, and compact DFN-6 layout - making it optimal for next-gen USB PD 3.1 and industrial 24V systems requiring precise voltage headroom control.
Availability
UCLAMP2511T.TCT is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch protection, and IoT edge node power rail hardening requiring stable component supply, consistent parametric performance, and long-term lifecycle support.
Supply support for UCLAMP2511T.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 analog and mixed-signal ICs for precision protection, signal integrity, and power management.
The UCLAMP series targets high-reliability transient suppression in space-constrained, thermally demanding applications - engineered specifically for USB, industrial, and automotive interfaces where clamping stability and low leakage are critical.
FAQ
What is the maximum continuous operating voltage for UCLAMP2511T.TCT?
The UCLAMP2511T.TCT has a reverse stand-off voltage (VRWM) of 25 V, meaning it remains non-conductive up to this DC or RMS voltage under normal operation. This allows safe integration into 24V industrial buses and USB PD 3.1 VBUS lines without leakage-induced power loss or false triggering. Exceeding 25 V risks premature conduction and accelerated wear.
How does UCLAMP2511T.TCT achieve stable clamping voltage across temperature?
UCLAMP2511T.TCT uses a precision-triggered FET shunt architecture instead of a pn-junction TVS. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise - resulting in 27.5–28 V clamping from –40°C to +125°C. This contrasts with standard TVS diodes whose clamping rises linearly with both current and temperature.
Can UCLAMP2511T.TCT replace a standard TVS diode in an existing 24V design?
Yes - UCLAMP2511T.TCT is a direct functional upgrade for 22–25V TVS diodes (e.g., SMAJ24A). Its DFN-6 footprint matches common TVS layouts, and its 28V clamping at 40A provides tighter voltage control than typical 36–40V TVS clamping. No PCB redesign is needed, but verify ground plane connectivity to all three GND pins for full surge rating.
What is the significance of the 20 mΩ dynamic resistance in UCLAMP2511T.TCT?
The 20 mΩ dynamic resistance (RDYN) reflects the effective on-resistance of the internal FET during surge conduction. This ultra-low value ensures minimal I×R voltage overshoot during fast transients, maintaining clamping accuracy and reducing stress on downstream components like load switch FETs or PD controllers - a key advantage over TVS diodes with fixed, higher RDYN.
Is UCLAMP2511T.TCT compliant with industry surge immunity standards?
Yes - UCLAMP2511T.TCT meets IEC 61000-4-5 Level 4 (±1 kV, 1.2/50μs, RS = 42Ω) for unsymmetrical lines and delivers 40A peak pulse current (8/20μs), exceeding common industrial surge requirements. It also satisfies IEC 61000-4-2 Level 4 (±30kV contact/air) and IEC 61000-4-4 (±4kV EFT), making it suitable for EN 61000-6-2/6-4 certified designs.
UCLAMP2511T.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.7V
- Voltage - Clamping (Max) @ Ipp:
- 8V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 6pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
UCLAMP2511T.TCT FAQ
1.How can I place an order for UCLAMP2511T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP2511T.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 UCLAMP2511T.TCT reliable?
The price and inventory of UCLAMP2511T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP2511T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP2511T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP2511T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP2511T.TCT?
UCLAMP2511T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP2511T.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 UCLAMP2511T.TCT?
For technical support, including UCLAMP2511T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP2511T.TCT requirements.
6.How does Aetrix verify that UCLAMP2511T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP2511T.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 UCLAMP2511T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP2511T.TCT?
All UCLAMP2511T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP2511T.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 UCLAMP2511T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP2511T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP2511T.TCT Tags
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