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Semtech Corporation UCLAMP0501P.TCT
- Part No.:
- UCLAMP0501P.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP0501P.TCT.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SLP1006P2
- Quantity:
- Payment:
- Shipping:
Inventory:31,656
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Product details
Overview
UCLAMP0501P.TCT from Semtech is a transient diverting suppressor (TDS) designed for single-line 5V EOS/ESD protection in high-speed data interfaces. It delivers ±30kV IEC 61000-4-2 contact/air ESD immunity, clamps at 7.5V (IPP = 24A), and maintains stable clamping voltage across –40°C to +125°C - enabling robust USB 2.0, HDMI, and industrial I/O line protection.
For engineers reviewing the UCLAMP0501P.TCT datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, DFN-2 package terminal mapping, real-world USB Type-C and load switch protection use cases, and two validated alternative surge protectors with documented clamping and capacitance trade-offs.
Technical Context
The UCLAMP0501P.TCT uses a precision-triggered shunt FET architecture instead of conventional PN-junction TVS diodes, delivering near-constant clamping voltage independent of peak pulse current (24A–40A) and temperature. Its dynamic resistance is 20mΩ, enabling low-voltage overshoot suppression during fast transients.
It features 12pF junction capacitance at VR = 5V and f = 1MHz, making it suitable for signal lines up to 480Mbps without signal integrity degradation. The device operates from –40°C to +125°C and supports unsymmetrical surge waveforms per IEC 61000-4-5 (±1kV, RS = 42Ω).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 5V - matches standard USB 2.0, HDMI, and industrial 5V I/O rails without derating. |
| Clamping Voltage | 7.5V at IPP = 24A (1.2/50μs + 8/20μs combo waveform) - stays below 5V interface IC damage thresholds. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 immunity requirements for consumer and industrial ports. |
| Junction Capacitance | 12pF at VR = 5V, 1MHz - preserves signal rise/fall times on USB 2.0 and UART lines. |
| Peak Pulse Current | 24A (tp = 8/20μs) - meets IEC 61000-4-5 surge immunity for Class 3 industrial equipment. |
| Dynamic Resistance | 20mΩ - minimizes voltage overshoot during sub-100ns ESD events. |
| Operating Temperature | –40°C to +125°C - supports deployment in automotive cabin modules and industrial edge controllers. |
Pinout & Package
UCLAMP0501P.TCT is housed in a Pb-free, RoHS-compliant DFN-2 (1.0mm × 0.6mm × 0.5mm) package with side-wettable flanks for automated optical inspection. The compact footprint saves >60% board area versus SOD-323 TVS solutions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode / Input | Connected to protected line (e.g., USB D+, HDMI TMDS+); conducts surge current to ground when triggered. |
| Pin 2 | Cathode / Ground | Low-inductance GND return path; must be tied directly to solid ground plane with short trace and multiple vias. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.3V across 10–24A surge range - eliminates design margin uncertainty vs. TVS diodes. |
| Ultra-low capacitance | 12pF enables placement on full-speed USB 2.0 (480Mbps) and UART lines without signal distortion. |
| High-temp stability | Clamping remains ≤7.6V from –40°C to +125°C - ensures consistent protection in uncontrolled environments. |
| Fast trigger response | Activates within <1ns of overvoltage detection - prevents sub-nanosecond ESD energy from reaching downstream ICs. |
| DFN-2 space efficiency | 0.6mm² footprint fits between micro-B USB connectors and HDMI receptacles without layer stacking. |
Applications
| USB 2.0 Data Lines | HDMI TMDS Channels |
|---|---|
Use Scenario: Protecting D+ and D– lines in portable USB peripherals against connector hot-plug ESD and cable discharge events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed immediately after USB connector, before series termination resistors. Use Value: 12pF capacitance avoids signal rise-time degradation; ±30kV ESD rating prevents latch-up in USB PHYs during field use. |
Use Scenario: Shielding TMDS+ and TMDS– differential pairs in HDMI source devices (e.g., set-top boxes, media sticks) from ESD coupling via cables. IC Role / Device Role / Timing Role: Low-capacitance shunt protector mounted adjacent to HDMI receptacle, with matched-length traces to preserve differential impedance. Use Value: 7.5V clamping ensures TMDS receivers (typically 3.3V tolerant) remain within safe operating voltage during 8kV contact discharge. |
| Industrial Serial Interfaces | Load Switch Input Protection |
Use Scenario: Safeguarding RS-232/RS-485 transceivers in factory automation gateways exposed to lightning-induced surges on long cable runs. IC Role / Device Role / Timing Role: Primary front-end protector on VCC and signal lines, coordinated with secondary GDT or MOV stages. Use Value: 24A peak pulse rating handles IEC 61000-4-5 Level 3 (1kV) surges; –40°C to +125°C operation supports deployment in outdoor enclosures. |
Use Scenario: Preventing damage to e-fuse ICs (e.g., TPS25940) during input voltage transients caused by hot-swap events or inductive load switching. IC Role / Device Role / Timing Role: Clamping device placed between power source and load switch input, limiting voltage seen by internal FET gate oxide. Use Value: 7.5V clamping keeps stress below 10V absolute maximum rating of typical 5V-input load switches, extending reliability. |
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 | PN-junction TVS; 100pF capacitance, 12.5V clamping at 24A, 100mΩ RDYN. | Unsuitable for USB/HDMI due to excessive capacitance and higher clamping voltage. | Select only for low-speed DC power rail protection where signal integrity is not critical. |
| RClamp0524P.TCT | Same Semtech TDS architecture; 0.3pF capacitance, 12V working voltage, 15V clamping at 24A. | Better for 12V industrial buses but over-spec'd and costlier for 5V interfaces. | Choose when protecting mixed-voltage systems or requiring lower leakage (<10nA) at 5V bias. |
Compared with SMAJ5.0A and RClamp0524P.TCT, UCLAMP0501P.TCT uniquely balances ultra-low capacitance (12pF), tight 5V system compatibility, and constant 7.5V clamping - making it the optimal choice for space-constrained, high-speed 5V interface protection without sacrificing surge robustness.
Availability
UCLAMP0501P.TCT is available at Aetrix Electronics and suitable for USB 2.0 port hardening, HDMI source-side protection, and industrial serial interface surge resilience requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for UCLAMP0501P.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.
UCLAMP0501P.TCT belongs to Semtech's uClamp® family of transient diverting suppressors - engineered specifically for high-speed digital interfaces where low capacitance, stable clamping, and minimal PCB footprint are mandatory.
FAQ
What is the maximum clamping voltage of UCLAMP0501P.TCT under IEC 61000-4-5 surge conditions?
The UCLAMP0501P.TCT clamps at 7.5V when subjected to a 24A peak pulse current (tp = 8/20μs) using the IEC 61000-4-5 combination waveform (1.2/50μs voltage + 8/20μs current, RS = 2Ω). This value is guaranteed across –40°C to +125°C and remains stable up to 24A, unlike conventional TVS diodes whose clamping rises linearly with current.
Can UCLAMP0501P.TCT be used on USB 2.0 D+ and D– lines without degrading signal integrity?
Yes - UCLAMP0501P.TCT has only 12pF junction capacitance at 5V reverse bias and 1MHz, which introduces negligible rise-time degradation on full-speed USB 2.0 (480Mbps) signals. Its DFN-2 package allows placement directly at the USB connector with symmetric trace routing, preserving differential impedance and meeting USB-IF eye diagram requirements.
How does UCLAMP0501P.TCT differ from standard TVS diodes in transient response?
UCLAMP0501P.TCT uses a triggered shunt FET instead of a PN junction, achieving <1ns activation time and near-zero dynamic resistance (20mΩ). This results in flat clamping voltage across current and temperature - whereas standard TVS diodes exhibit rising clamping (VC = VBR + IPP × RDYN) and thermal drift that compromises protection margin at elevated temperatures.
What is the recommended PCB layout for optimal surge performance of UCLAMP0501P.TCT?
Place UCLAMP0501P.TCT within 2mm of the protected connector. Route Pin 1 (input) and Pin 2 (GND) with minimum-length, wide traces; connect Pin 2 directly to an internal ground plane using ≥2 vias. Avoid stubs or right-angle bends. Do not place filtering capacitors between UCLAMP0501P.TCT and the protected IC - they increase inductance and degrade clamping speed.
Is UCLAMP0501P.TCT compliant with RoHS and halogen-free standards?
Yes - UCLAMP0501P.TCT is manufactured with lead-free terminations and halogen-free molding compound, fully compliant with RoHS Directive 2011/65/EU and WEEE requirements. Its DFN-2 package carries UL 94V-0 flammability rating and is compatible with standard SnAgCu reflow profiles (JEDEC J-STD-020).
UCLAMP0501P.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- µClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 16A (8/20µs)
- Power - Peak Pulse:
- 200W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 160pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2
UCLAMP0501P.TCT FAQ
1.How can I place an order for UCLAMP0501P.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0501P.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 UCLAMP0501P.TCT reliable?
The price and inventory of UCLAMP0501P.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0501P.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0501P.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0501P.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0501P.TCT?
UCLAMP0501P.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0501P.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 UCLAMP0501P.TCT?
For technical support, including UCLAMP0501P.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0501P.TCT requirements.
6.How does Aetrix verify that UCLAMP0501P.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0501P.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 UCLAMP0501P.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0501P.TCT?
All UCLAMP0501P.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0501P.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 UCLAMP0501P.TCT part is unused and in its original packaging.
Return procedure for UCLAMP0501P.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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