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Semtech Corporation UCLAMP0511P.TCT
- Part No.:
- UCLAMP0511P.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP0511P.TCT.pdf
- Description:
- TVS DIODE 5VWM 14VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:15,486
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Product details
Overview
UCLAMP0511P.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of single 5V I/O or power lines in USB, industrial, and IoT interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 7.5V (IPP = 24A), maintains <20mΩ dynamic resistance, and operates from –40°C to +125°C in a 1.6 × 1.6 mm DFN-6 package.
For engineers reviewing the UCLAMP0511P.TCT datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, thermal stability data, PCB layout guidance, and real-world USB Type-C and load switch protection use cases - all confirmed against Semtech's official Rev 2.5 datasheet.
Technical Context
The UCLAMP0511P.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that initiates conduction when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 0–24A peak pulse current due to decreasing RDS(on) under surge conditions.
It features 175pF junction capacitance at 5V reverse bias, 130–600nA leakage at VRWM = 5V, and a 7.5V clamping voltage under 1.2/50μs–8/20μs combination waveform (RS = 2Ω). Its functional architecture enables stable protection for 5V bus lines without thermal derating penalties seen in standard TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 5 V - defines maximum continuous DC operating voltage on protected line without leakage or conduction |
| Clamping Voltage (VC) | 7.5 V @ IPP = 24A - limits transient overvoltage to safe level for downstream 5V logic and controllers |
| Peak Pulse Current (IPP) | 24 A (tp = 8/20μs) - supports IEC 61000-4-5 Level 3 surge immunity (±1kV, RS = 42Ω) |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds industrial and consumer ESD immunity requirements |
| Junction Capacitance (CJ) | 175 pF @ VR = 5V, 1MHz - low enough for USB 2.0 signal integrity; not suitable for USB 3.x superspeed lanes |
| Dynamic Resistance (RDYN) | 20 mΩ - ensures minimal voltage rise during surge, enabling flat clamping behavior vs. current |
| Operating Temperature | –40°C to +125°C - supports automotive-grade ambient operation without clamping voltage drift |
Pinout & Package
UCLAMP0511P.TCT is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad (no internal thermal pad required - energy dissipated in silicon).
| 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 parasitic inductance |
| 4, 5, 6 | IN | Protected line input; tied together internally and externally to handle full 24A surge across parallel bond wires and package leads |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS diode with active shunt FET, delivering flat clamping voltage independent of surge amplitude |
| Stable clamping over temperature | Clamping voltage varies <±0.2V from –40°C to +125°C - eliminates thermal derating calculations in industrial designs |
| Low dynamic resistance | 20 mΩ enables 7.5V clamping at 24A - reduces stress on downstream 5V regulators and USB PD controllers |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive fast transients in motor-driven industrial equipment |
| Small-footprint DFN-6 | 1.6 × 1.6 mm footprint saves >60% board area vs. SOT-23 TVS solutions - critical for compact USB Type-C connectors and IoT edge nodes |
Applications
| USB Type-C Power Delivery | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS and CC lines in USB Type-C ports supporting up to 20V PD negotiation while maintaining strict 5V system rail integrity. IC Role / Device Role / Timing Role: Primary EOS suppressor for 5V auxiliary rails and control lines - placed directly at connector entry point before PD controller. Use Value: Prevents latch-up or gate oxide damage in USB PD controllers (e.g., STUSB4500, TUSB7320) by clamping surges to 7.5V - well below 8.5V absolute max rating of most 5V logic inputs. |
Use Scenario: Safeguarding enable and input pins of industrial load switches (e.g., ON Semiconductor NIS5132, TI TPS229xx) exposed to lightning-induced surges in remote metering or robotics. IC Role / Device Role / Timing Role: Front-end transient shunt - diverts surge energy away from sensitive CMOS gate drivers and internal FET structures. Use Value: Enables use of cost-optimized load switches without external series resistors or RC snubbers - maintains fast turn-on timing (<10μs) while surviving ±1kV IEC 61000-4-5 surges. |
| IoT Sensor Node Power Bus | POS Terminal Data Line Protection |
|
Use Scenario: Securing 5V power distribution to wireless sensor modules (BLE/Wi-Fi SoCs) in battery-powered smart meters and environmental monitors. IC Role / Device Role / Timing Role: Single-line bus protector - placed between buck converter output and sensor cluster power rail. Use Value: Eliminates need for redundant TVS arrays; 175pF capacitance avoids signal distortion on 100kHz I²C/SPI buses sharing same 5V rail. |
Use Scenario: Hardening RS-232 or UART data lines in point-of-sale terminals subjected to ESD events during card insertion or peripheral hot-plug. IC Role / Device Role / Timing Role: Low-capacitance line clamp - installed inline between transceiver IC (e.g., MAX3232) and connector. Use Value: Maintains signal edge integrity (tr < 10ns) while suppressing ±30kV ESD strikes - prevents firmware lockup or UART framing errors in payment processing firmware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ5.0A | Standard unidirectional TVS diode; 9.2V clamping @ 24A; higher RDYN (~0.5Ω); 100pF capacitance | Larger SMC package (7.1 × 6.2 mm); lacks flat-clamp behavior; requires thermal derating above 85°C | Choose only if board space allows larger package and clamping voltage margin permits 9.2V peak |
| TPD4E05U06DQAR | Quad-channel 5V ESD array; 12pF per line; 12V clamping @ 4A; rated for IEC 61000-4-2 only (not IEC 61000-4-5) | Designed for high-speed data lines (USB 2.0, HDMI); insufficient for 24A surge protection | Select only for multi-line ESD-only protection where surge immunity is handled elsewhere |
Compared with SMAJ5.0A and TPD4E05U06DQAR, UCLAMP0511P.TCT uniquely combines 24A surge capability, 7.5V flat clamping, and DFN-6 size - making it the only option for space-constrained 5V bus protection requiring both ESD and lightning-level immunity.
Availability
UCLAMP0511P.TCT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, IoT sensor node power buses, POS terminal data lines, and remote metering equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for UCLAMP0511P.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 sensing, protection, and connectivity in industrial, communications, and consumer markets.
The UCLAMP series targets high-reliability transient suppression for 3.3V–24V interfaces, emphasizing flat-clamp performance, thermal stability, and ultra-small packaging - specifically engineered for next-generation USB, IoT, and industrial edge electronics.
FAQ
What is the maximum continuous operating voltage for UCLAMP0511P.TCT?
The UCLAMP0511P.TCT has a reverse stand-off voltage (VRWM) of 5 V, meaning it can safely operate on 5V DC bus lines without leakage or conduction. This value is specified in Semtech's official datasheet Rev 2.5 and validated across –40°C to +125°C. Exceeding 5V risks premature triggering or accelerated degradation of the internal FET structure in UCLAMP0511P.TCT.
Does UCLAMP0511P.TCT meet IEC 61000-4-5 surge immunity standards?
Yes, UCLAMP0511P.TCT is rated for 24A peak pulse current (tp = 8/20μs), which satisfies IEC 61000-4-5 Level 3 (±1kV, RS = 42Ω, CS = 0.5μF) for 5V systems. Its 7.5V clamping voltage ensures protected circuits remain within safe operating limits during surge events - a key specification confirmed in the UCLAMP0511P.TCT datasheet's Electrical Characteristics table.
Can UCLAMP0511P.TCT be used on USB 3.0 or USB 3.1 SuperSpeed differential pairs?
No, UCLAMP0511P.TCT is not suitable for USB 3.x SuperSpeed lanes. Its 175pF junction capacitance introduces excessive signal distortion and insertion loss on 5Gbps+ differential signals. For those lines, Semtech recommends low-capacitance arrays like RClamp3371ZC (<0.25pF). UCLAMP0511P.TCT is intended for 5V VBUS, CC, or power-related single-ended lines - not high-speed data paths.
How does UCLAMP0511P.TCT achieve flat clamping voltage across varying surge currents?
UCLAMP0511P.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 near-constant clamping (7.5V from 1A to 24A). This behavior, documented in the UCLAMP0511P.TCT datasheet's Typical Characteristics section, differs fundamentally from TVS diodes whose VC = VBR + IPP × RDYN.
Is a thermal pad or heatsink required for UCLAMP0511P.TCT during surge events?
No thermal pad or external heatsink is required for UCLAMP0511P.TCT. The device dissipates surge energy in the silicon die, not via package thermal conduction. Semtech explicitly states in the UCLAMP0511P.TCT datasheet that "no thermal pad is needed" - and recommends direct connection of all GND pins (1, 2, 3) to a solid ground plane using multiple vias to minimize inductance instead of thermal enhancement.
UCLAMP0511P.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):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 14V
- Current - Peak Pulse (10/1000µs):
- 12A (8/20µs)
- Power - Peak Pulse:
- 170W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 75pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
UCLAMP0511P.TCT FAQ
1.How can I place an order for UCLAMP0511P.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0511P.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 UCLAMP0511P.TCT reliable?
The price and inventory of UCLAMP0511P.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0511P.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0511P.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0511P.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0511P.TCT?
UCLAMP0511P.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0511P.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 UCLAMP0511P.TCT?
For technical support, including UCLAMP0511P.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0511P.TCT requirements.
6.How does Aetrix verify that UCLAMP0511P.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0511P.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 UCLAMP0511P.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0511P.TCT?
All UCLAMP0511P.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0511P.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 UCLAMP0511P.TCT part is unused and in its original packaging.
Return procedure for UCLAMP0511P.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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