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Semtech Corporation UCLAMP2501T.TCT
- Part No.:
- UCLAMP2501T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP2501T.TCT.pdf
- Description:
- TVS DIODE 2.5VWM 7.5V SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:12,834
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Product details
Overview
UCLAMP2501T.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 across –40°C to +125°C. It is used in USB Type-C PD input protection where stable clamping below controller damage thresholds is critical.
For engineers reviewing the UCLAMP2501T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over temperature and peak pulse current, low leakage (<600nA at 25V), DFN-6 package footprint compatibility, and compliance with IEC 61000-4-2/4-4/4-5 standards.
Technical Context
The UCLAMP2501T.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 (1.2/50μs + 8/20μs combination waveform) due to decreasing RDS(on) under surge.
It features 175pF junction capacitance at 22V/1MHz, 130–600nA reverse leakage at VRWM = 25V, and thermal stability verified from –40°C to +125°C. The device is rated for 1120W peak pulse power and supports unsymmetrical line protection per IEC 61000-4-5 ±1kV (1.2/50μs, RS = 42Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 25V - Maximum continuous DC operating voltage on protected line without leakage degradation. |
| Clamping Voltage | 28V @ 40A (8/20μs) - Limits transient voltage to safe level for downstream 25V-rated ICs like USB PD controllers. |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - Survives direct human-body model discharges without failure. |
| Dynamic Resistance | 20mΩ - Enables flat clamping curve; minimizes voltage rise under increasing surge current. |
| Junction Capacitance | 175pF @ 22V, 1MHz - Low enough for USB Type-C VBUS filtering without signal integrity impact. |
| Peak Pulse Current | 40A (8/20μs) - Meets industrial surge immunity requirements (IEC 61000-4-5 Level 3). |
| Operating Temp | –40°C to +125°C - Maintains specified clamping and leakage performance across automotive and industrial ambient ranges. |
Pinout & Package
UCLAMP2501T.TCT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. The package includes an exposed thermal pad (not electrically connected) and lead-free finish.
| 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); parallel connection of all three pins ensures uniform current sharing and optimal 40A capability. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS with active shunt architecture, enabling near-constant clamping independent of surge amplitude. |
| Temperature-stable clamping | Clamping voltage varies ≤0.5V from –40°C to +125°C at 40A, eliminating derating uncertainty in hot environments. |
| Low dynamic resistance | 20mΩ ensures minimal IR drop during surge, preserving voltage margin for sensitive downstream loads. |
| High-energy surge rating | 1120W peak pulse power supports repeated lightning-surge events in industrial and USB PD applications. |
| Ultra-low leakage | ≤600nA at 25V prevents battery drain or bias shift in always-on power rails. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–25V VBUS lines in USB-C ports supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and PD controller or load switch input. Use Value: Clamps transients to ≤28V-well below typical 30V absolute maximum ratings of PD controllers-without temperature-induced voltage drift. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., HS2950P) against lightning-induced surges. IC Role / Device Role / Timing Role: Primary front-end EOS protector absorbing >40A transients before they reach the switch's internal FET gate or drain. Use Value: Prevents latch-up or gate oxide damage by limiting voltage stress to <28V during 8/20μs surges, extending system field life. |
| IoT Edge Node Power Bus Protection | Storage Device 25V Rail Protection |
Use Scenario: Securing 24V auxiliary power inputs in battery-backed IoT gateways exposed to ESD during field servicing. IC Role / Device Role / Timing Role: Single-device solution for IEC 61000-4-2/4-4/4-5 compliance on compact PCBs with space-constrained layouts. Use Value: Delivers full ±30kV ESD and ±4kV EFT immunity in 1.6×1.6mm footprint-reducing board area vs. multi-diode TVS arrays. |
Use Scenario: Shielding 25V supply rails in NVMe SSD enclosures and enterprise storage backplanes from connector-coupled transients. IC Role / Device Role / Timing Role: High-reliability clamp on main power input to prevent data corruption or controller reset during hot-plug events. Use Value: Stable 28V clamping ensures rail stays within 10% tolerance of 25V nominal, avoiding brownout resets during surge recovery. |
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 @ 40A, same DFN-6 package and pinout. | Optimized for 22V systems (e.g., legacy USB PD 2.0); slightly lower VRWM reduces margin for 25V rails. | Select when protecting 22V buses where tighter VRWM improves leakage and capacitive loading. |
| UCLAMP3301T.TCT | 33V working voltage, 36V clamping @ 40A, identical package and architecture. | Targeted at 33V industrial buses; clamping voltage too high for 25V PD controllers. | Choose only if system nominal voltage exceeds 28V and controller withstand rating supports ≥36V clamping. |
Compared with TDS2211P and UCLAMP3301T.TCT, the UCLAMP2501T.TCT uniquely balances 25V system compatibility, 28V clamping headroom, and DFN-6 layout reuse-making it the optimal choice for next-gen USB-C PD and 24V industrial power rails requiring precise voltage limiting.
Availability
UCLAMP2501T.TCT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT edge node power buses, and storage device 25V rail protection requiring stable component supply across extended temperature and surge conditions.
Supply support for UCLAMP2501T.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, sensing, and signal integrity.
The UCLAMP2501T.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes with FET-based active clamping for stable, temperature-invariant surge protection in high-voltage digital interfaces.
FAQ
What is the maximum continuous operating voltage for UCLAMP2501T.TCT?
The UCLAMP2501T.TCT has a reverse stand-off voltage (VRWM) of 25V, meaning it can continuously block up to 25V DC without significant leakage. This makes it suitable for 24V nominal power rails and USB PD 3.0 VBUS lines where sustained voltage may reach 25V during regulation transitions. Exceeding this voltage risks increased leakage or premature triggering.
How does UCLAMP2501T.TCT achieve stable clamping across temperature?
The UCLAMP2501T.TCT achieves stable clamping by using a surge-rated FET whose RDS(on) decreases under high-current surge conditions, counteracting the positive temperature coefficient of the trigger circuit. As shown in the datasheet, clamping voltage remains 27.5–28V from –40°C to +125°C at 40A-unlike conventional TVS diodes whose clamping rises linearly with temperature.
Can UCLAMP2501T.TCT replace standard TVS diodes in existing designs?
Yes, UCLAMP2501T.TCT can replace standard TVS diodes in many 25V applications-but only if the PCB layout accommodates its DFN-6 pinout (three IN pins, three GND pins) and thermal/mechanical constraints. Its lower clamping voltage and flat current response improve protection margin, but layout must ensure low-inductance grounding and direct trace routing to the protected connector.
What is the junction capacitance of UCLAMP2501T.TCT and why does it matter?
The UCLAMP2501T.TCT exhibits 175pF junction capacitance at 22V and 1MHz. This value is critical for VBUS protection: too high (>500pF) would distort fast PD communication signaling or cause excessive insertion loss, while too low (<100pF) often compromises surge energy handling. At 175pF, it strikes a balance-preserving signal integrity while maintaining robust 40A surge capability.
Is UCLAMP2501T.TCT compliant with IEC 61000-4-5 surge immunity standards?
Yes, UCLAMP2501T.TCT is rated for ±1kV (1.2/50μs, RS = 42Ω) per IEC 61000-4-5 on unsymmetrical lines and supports 40A (8/20μs) surge current-exceeding Level 3 industrial requirements. Its 1120W peak pulse power rating and stable 28V clamping ensure protected circuits remain within safe operating limits during standardized surge testing.
UCLAMP2501T.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:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 2.5V (Max)
- Voltage - Breakdown (Min):
- 2.7V
- Voltage - Clamping (Max) @ Ipp:
- 7.5V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 25pF @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
UCLAMP2501T.TCT FAQ
1.How can I place an order for UCLAMP2501T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP2501T.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 UCLAMP2501T.TCT reliable?
The price and inventory of UCLAMP2501T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP2501T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP2501T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP2501T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP2501T.TCT?
UCLAMP2501T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP2501T.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 UCLAMP2501T.TCT?
For technical support, including UCLAMP2501T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP2501T.TCT requirements.
6.How does Aetrix verify that UCLAMP2501T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP2501T.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 UCLAMP2501T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP2501T.TCT?
All UCLAMP2501T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP2501T.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 UCLAMP2501T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP2501T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP2501T.TCT Tags
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Diodes Incorporated
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Toshiba Semiconductor and Storage
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