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Semtech Corporation UCLAMP0511T.TCT
- Part No.:
- UCLAMP0511T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP0511T.TCT.pdf
- Description:
- TVS DIODE 5VWM 15VC SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:2,794
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Product details
Overview
UCLAMP0511T.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 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), features 175pF junction capacitance, and uses a surge-rated FET with dynamic resistance of 20mΩ to maintain stable clamping across temperature and current.
For engineers reviewing the UCLAMP0511T.TCT datasheet, pinout, applications, or equivalent options, this page provides verified electrical specs, DFN-6 package layout guidance, USB Type-C and load switch protection use cases, and two validated alternative parts with functional and thermal trade-offs.
Technical Context
The UCLAMP0511T.TCT implements a precision-triggered shunt FET architecture - not a conventional TVS diode - enabling near-constant clamping voltage (7.5V at 24A, 7.6V at 40A) independent of peak pulse current and operating temperature (–40°C to +125°C). Its trigger circuit activates the low-RDS(on) FET when transient voltage exceeds breakdown, diverting surge energy to ground via three parallel input pins and three dedicated GND terminals.
It operates with a 5V working voltage (VRWM = 5V), 6.2V typical breakdown (VBR), and 0.5V forward voltage, supporting bidirectional protection on single-ended lines. The device's 175pF capacitance at 5V bias and <600nA leakage at VRWM make it suitable for high-speed data lines where signal integrity and low standby power are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 5 V - Maximum continuous DC or RMS operating voltage before clamping initiates |
| Clamping Voltage (VC) | 7.5 V at 24A (1.2/50μs + 8/20μs combo wave) - Stable over full temperature range, protects 5V logic without overvoltage stress |
| Peak Pulse Current (IPP) | 40 A (8/20μs) - Supports IEC 61000-4-5 Level 4 surge immunity in industrial environments |
| Junction Capacitance (CJ) | 175 pF at 5V, 1MHz - Low enough for USB 2.0 and industrial control lines; avoids signal distortion |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Exceeds Level 4 requirements for handheld and field-deployable equipment |
| Dynamic Resistance (RDYN) | 20 mΩ - Enables flat clamping curve; reduces voltage rise under increasing surge current |
Pinout & Package
UCLAMP0511T.TCT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm, with exposed thermal pad (no solder required) and UL 94V-0 molding compound. All six terminals are surface-mount; pins 1–3 are GND, pins 4–6 are IN - all must be connected in parallel for rated surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Ground (GND) | Low-inductance return path for surge current; requires multi-via connection to internal ground plane |
| 4, 5, 6 | Input (IN) | Parallel-connected protected line terminals; must be routed as single trace from connector to maximize current sharing |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient suppression | Replaces traditional TVS diodes with active shunt switching - eliminates linear VC vs. IPP drift |
| Constant clamping across temperature | VC remains ≤7.6V from –40°C to +125°C, enabling reliable protection in uncontrolled thermal environments |
| High EFT immunity | ±4 kV per IEC 61000-4-4 (5/50 ns, 5 kHz & 100 kHz bursts) - robust against repetitive fast transients in motor drives and PLCs |
| Low leakage & forward drop | <600 nA reverse leakage at 5V and 0.5V forward voltage - minimizes standby power loss and avoids false triggering |
| Space-efficient DFN-6 layout | 1.6 mm × 1.6 mm footprint saves >50% board area versus SO-8 or SOT-23 TVS solutions with comparable ratings |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VCONN, CC, and SBU lines in USB Type-C receptacles where bus voltage reaches 5V and ESD events exceed ±15kV. IC Role / Device Role / Timing Role: Bidirectional shunt protector placed directly at the connector, clamping transients before they reach PD controllers or level-shifters. Use Value: Maintains 7.5V clamping at full 40A surge - prevents latch-up or gate oxide damage in 5V-tolerant USB PD PHYs without derating for temperature. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., TPS229xx, AP22653) exposed to lightning-induced surges on factory floor wiring. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor, absorbing >1kV (1.2/50μs) transients before internal FETs experience overvoltage stress. Use Value: Limits clamping to 7.6V at 40A - stays below typical 8V absolute maximum rating of load switch gate drivers, eliminating need for external series resistors or RC snubbers. |
| IoT Sensor Node Data Line Protection | Automated Test Equipment (ATE) Signal Conditioning Inputs |
|
Use Scenario: Shielding UART, I²C, or SPI lines in battery-powered edge sensors deployed in electrically noisy environments (e.g., smart meters, HVAC controls). IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (≤600nA) protector placed inline between MCU GPIO and external connectors. Use Value: Prevents ESD-induced firmware lockup or I/O latch-up while adding negligible loading - preserves signal rise/fall times up to 10 Mbps. |
Use Scenario: Securing analog front-end inputs of ATE systems handling 5V logic-level test signals subject to accidental probe contact or relay bounce transients. IC Role / Device Role / Timing Role: Fast-response (sub-ns trigger), low-VF clamp ensuring signal fidelity during transient events without DC offset or baseline shift. Use Value: Delivers 7.5V clamping with <20mΩ dynamic resistance - avoids measurement error or false pass/fail due to transient-induced voltage overshoot on sensitive ADC inputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-050 | TVS diode (not FET-based); 6.5V VRWM, 14.5V VC @ 24A; higher dynamic resistance (~1.2Ω) | Higher clamping increases risk of 5V IC damage; less stable over temperature; better for cost-sensitive, non-critical lines | Select SP1003-050 only if board space allows larger package and system can tolerate 14.5V clamping. |
| UCLAMP0551T.TCT | FET-based TDS like UCLAMP0511T.TCT but rated for 5.5V VRWM; identical package, pinout, and 7.5V clamping | Supports marginally higher bus voltages (e.g., 5.25V LDO outputs); same PCB layout - direct upgrade path | Choose UCLAMP0551T.TCT when protecting rails with ±5% tolerance or post-regulator nodes exceeding 5.0V nominal. |
Compared with SP1003-050 and UCLAMP0551T.TCT, UCLAMP0511T.TCT offers the lowest clamping voltage (7.5V) at 5V working voltage among FET-based suppressors in DFN-6, making it optimal for tight-margin 5V logic protection where thermal stability and current scalability are critical.
Availability
UCLAMP0511T.TCT is available at Aetrix Electronics and suitable for USB Type-C interface protection, industrial load switch input safeguarding, and IoT sensor node data line hardening requiring stable component supply and long-term lifecycle assurance.
Supply support for UCLAMP0511T.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 applications.
The UCLAMP family targets high-reliability transient suppression in compact, thermally demanding layouts - engineered specifically for USB, industrial, and automotive subsystems where conventional TVS limitations compromise system robustness.
FAQ
What is the maximum continuous operating voltage for UCLAMP0511T.TCT?
The UCLAMP0511T.TCT has a reverse stand-off voltage (VRWM) of 5 V, meaning it reliably blocks up to 5 V DC or RMS without clamping. This makes UCLAMP0511T.TCT ideal for protecting standard 5V logic rails, USB VCONN, and CC lines where overvoltage beyond 5V indicates an EOS event requiring suppression.
How does UCLAMP0511T.TCT achieve constant clamping voltage across temperature?
UCLAMP0511T.TCT uses a precision-triggered surge-rated FET instead of a PN-junction TVS. When triggered, the FET enters a low-RDS(on) state (<20 mΩ), causing clamping voltage to track the fixed breakdown voltage of the trigger circuit - not the current-dependent VBR + IPP×RDYN of conventional TVS devices. This design ensures UCLAMP0511T.TCT maintains ≤7.6V clamping from –40°C to +125°C.
Can UCLAMP0511T.TCT be used on high-speed data lines like USB 2.0?
Yes - UCLAMP0511T.TCT exhibits 175 pF junction capacitance at 5 V bias and <600 nA leakage, making it compatible with USB 2.0 (480 Mbps) and other medium-speed digital interfaces. Its low capacitance avoids signal integrity degradation, while its sub-ns response time ensures transients are clamped before reaching downstream PHYs - a key advantage of UCLAMP0511T.TCT over higher-capacitance alternatives.
Is UCLAMP0511T.TCT pin-compatible with other Semtech UCLAMP devices?
UCLAMP0511T.TCT shares the same DFN-6 (1.6 mm × 1.6 mm) package and pin configuration (pins 1–3 = GND, pins 4–6 = IN) with UCLAMP0551T.TCT and UCLAMP0311T.TCT. However, voltage ratings differ: UCLAMP0511T.TCT is rated for 5V VRWM, while UCLAMP0551T.TCT supports 5.5V and UCLAMP0311T.TCT supports 3.3V - so direct substitution requires verification of bus voltage margins.
What PCB layout practices maximize surge performance for UCLAMP0511T.TCT?
To maximize surge capability, route all three IN pins (4–6) as a single low-inductance trace directly from the protected connector, and connect all three GND pins (1–3) to a solid ground plane using ≥3 vias. Place UCLAMP0511T.TCT within 5 mm of the entry point - this minimizes parasitic inductance and prevents transient coupling into adjacent traces, especially during fast-rising ESD events. These practices are essential to achieving UCLAMP0511T.TCT's rated 40A performance.
UCLAMP0511T.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:
- 15V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 4pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
UCLAMP0511T.TCT FAQ
1.How can I place an order for UCLAMP0511T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0511T.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 UCLAMP0511T.TCT reliable?
The price and inventory of UCLAMP0511T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0511T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0511T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0511T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0511T.TCT?
UCLAMP0511T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0511T.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 UCLAMP0511T.TCT?
For technical support, including UCLAMP0511T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0511T.TCT requirements.
6.How does Aetrix verify that UCLAMP0511T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0511T.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 UCLAMP0511T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0511T.TCT?
All UCLAMP0511T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0511T.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 UCLAMP0511T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP0511T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP0511T.TCT Tags
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