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Semtech Corporation UCLAMP0505T.TCT
- Part No.:
- UCLAMP0505T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-XFDFN Exposed Pad
- Datasheet:
-
UCLAMP0505T.TCT.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SLP1313P6T
- Quantity:
- Payment:
- Shipping:
Inventory:3,068
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Product details
Overview
UCLAMP0505T.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 features 0.25pF junction capacitance - enabling robust protection without signal integrity degradation on USB 2.0, HDMI, or DisplayPort lines.
For engineers reviewing the UCLAMP0505T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include low clamping voltage under 24A surge, sub-0.3pF capacitance for <10Gbps signaling, stable performance across –40°C to +125°C, and DFN-2L 1.0×0.6mm package compatibility with tight-pitch layout constraints.
Technical Context
UCLAMP0505T.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 (–40°C to +125°C). Its dynamic resistance is 0.15Ω, enabling low-voltage clamping while dissipating surge energy in the FET channel rather than the junction.
The device integrates a dedicated trigger circuit that activates the shunt FET when transient voltage exceeds ~6.8V, achieving sub-nanosecond response time. Unlike standard TVS devices, its clamping voltage remains stable at 7.5V (typ.) up to 24A and 7.6V (typ.) at 40A under 1.2/50μs–8/20μs combination waveforms - critical for protecting 5V logic-level interfaces without overvoltage stress.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 5 V - matches standard USB 2.0, HDMI, and DisplayPort supply rails without leakage or false triggering |
| Clamping Voltage (VC) | 7.5 V at IPP = 24A - stays below 5V system IC absolute maximum ratings (e.g., 7V tolerance) during surge events |
| Junction Capacitance (CJ) | 0.25 pF at VR = 5V - enables use on >10 Gbps differential pairs without measurable insertion loss or return loss degradation |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds Level 4 industrial immunity requirements for exposed connectors |
| Peak Pulse Current (IPP) | 24 A (8/20μs) - supports common IEC 61000-4-5 surge test profiles for consumer and industrial equipment |
| Dynamic Resistance (RDYN) | 0.15 Ω - ensures minimal voltage rise across device during high-current transients, preserving clamping accuracy |
| Operating Temperature | –40°C to +125°C - maintains full electrical specs across automotive cabin and industrial ambient conditions |
Pinout & Package
UCLAMP0505T.TCT is housed in a RoHS-compliant, halogen-free DFN-2L package measuring 1.0 mm × 0.6 mm × 0.55 mm with side-wettable flanks for automated optical inspection. The compact footprint supports high-density routing on space-constrained PCBs such as USB-C receptacles and mobile display modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Anode) | Protected Line Input | Connects directly to high-speed signal line (e.g., USB D+, HDMI TMDS+); must be placed within 3 mm of connector |
| Pin 2 (Cathode) | Ground Return | Low-inductance connection to solid ground plane via multiple vias; required for <1 nH loop inductance to sustain 24A surge |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies only ±0.1V from 24A to 40A surge - eliminates need for derating at elevated temperatures |
| Ultra-low capacitance | 0.25pF enables placement on 10Gbps+ differential lanes without violating eye diagram mask requirements |
| Sub-1ns response time | Trigger circuit activates shunt FET before transient propagates beyond protected IC input stage |
| Thermal-stable operation | No clamping voltage drift across –40°C to +125°C - removes thermal design margin uncertainty in sealed enclosures |
| Pb-free & halogen-free | Meets IPC-J-STD-609 Class 1 moisture sensitivity and UL 94V-0 flammability for surface-mount reflow compatibility |
Applications
| USB 2.0 Data Lines | HDMI/DVI Interfaces |
|---|---|
|
Use Scenario: Protecting USB 2.0 D+/D− lines in portable docking stations exposed to frequent hot-plug ESD events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and USB PHY, operating in parallel with signal path. Use Value: 0.25pF capacitance prevents signal rise-time degradation (<10% increase), maintaining full USB 2.0 480 Mbps compliance without equalization. |
Use Scenario: Shielding HDMI 1.4/2.0 TMDS+ and TMDS− channels against ESD from user-inserted cables in AV receivers. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on each differential pair, grounded to chassis via shortest possible path. Use Value: 7.5V clamping ensures TMDS receiver inputs (typically rated to 7V abs max) remain within safe operating area during ±30kV contact discharge. |
| DisplayPort Source Ports | Industrial Sensor Interfaces |
|
Use Scenario: Securing DisplayPort 1.4 main link lanes in thin-client displays where board space limits discrete TVS options. IC Role / Device Role / Timing Role: Single-line TDS per lane, mounted adjacent to DP connector with controlled-impedance trace routing. Use Value: 1.0×0.6mm DFN-2L footprint saves >60% board area versus legacy SOD-323 TVS, enabling 4-lane DP routing in <10mm² real estate. |
Use Scenario: Protecting 5V analog sensor outputs (e.g., pressure, temperature) in factory automation I/O modules subject to cable-induced surges. IC Role / Device Role / Timing Role: Point-of-entry suppressor on sensor signal line before ADC input, referenced to system ground. Use Value: Stable 7.5V clamping prevents ADC saturation and latch-up during 24A lightning-induced transients, ensuring uninterrupted measurement continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RClamp0524P.TCT | Higher clamping (8.5V @ 24A), 0.3pF capacitance, same DFN-2L package | Better suited for 5.5V systems with higher voltage margin; marginal for strict 7V-abs-max receivers | Select RClamp0524P.TCT if system VCC tolerance exceeds 7.5V and layout allows 0.05pF capacitance increase |
| SP1003-050 | PN-junction TVS, 12V clamping @ 24A, 0.5pF, SOD-323 package | Larger footprint, higher clamping degrades noise margin; requires thermal relief for 24A surge dissipation | Choose SP1003-050 only for cost-sensitive, non-high-speed designs where 12V clamping is acceptable and board space permits SOD-323 |
Compared with RClamp0524P.TCT and SP1003-050, UCLAMP0505T.TCT provides the lowest clamping voltage and smallest capacitance in the smallest package - making it optimal for next-generation 5V high-speed interfaces where signal integrity and space are constrained.
Availability
UCLAMP0505T.TCT is available at Aetrix Electronics and suitable for USB Type-C docking stations, HDMI-enabled medical monitors, DisplayPort-based digital signage, and industrial IoT sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for UCLAMP0505T.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.
UCLAMP0505T.TCT belongs to Semtech's uClamp® family of transient diverting suppressors - engineered specifically for ultra-low-capacitance, constant-clamp protection of high-speed digital interfaces operating at 3.3V–5V.
FAQ
What is the maximum peak pulse current rating for UCLAMP0505T.TCT?
UCLAMP0505T.TCT is rated for 24A peak pulse current under the IEC 61000-4-5 8/20μs waveform. This value is validated across the full operating temperature range (–40°C to +125°C) and reflects the device's ability to safely divert surge energy without degradation. The 24A rating ensures compatibility with common industrial surge immunity standards while maintaining 7.5V clamping performance. UCLAMP0505T.TCT does not specify a 40A rating - that applies to higher-voltage variants like TDS2211P.
Does UCLAMP0505T.TCT support IEC 61000-4-2 Level 4 ESD protection?
Yes, UCLAMP0505T.TCT meets IEC 61000-4-2 Level 4 with ±30kV contact and ±30kV air discharge capability. This is confirmed in Semtech's official characterization data and enables robust front-end protection for exposed ports in consumer, industrial, and medical equipment. The device achieves this performance using a precision-triggered shunt FET architecture that responds faster and clamps lower than standard TVS diodes - critical for safeguarding sensitive 5V interface ICs. UCLAMP0505T.TCT maintains this rating across its full temperature range.
What is the junction capacitance of UCLAMP0505T.TCT and why does it matter?
UCLAMP0505T.TCT has a junction capacitance of 0.25pF measured at 5V reverse bias and 1MHz. This ultra-low value is essential for preserving signal integrity on high-speed differential interfaces such as USB 2.0, HDMI, and DisplayPort - where even 0.5pF can cause measurable eye closure or jitter. The 0.25pF spec allows designers to place UCLAMP0505T.TCT directly on signal traces without equalization or layout compensation. It is verified per manufacturer test conditions and remains stable across temperature and bias voltage.
Can UCLAMP0505T.TCT be used on bidirectional data lines like USB D+ and D−?
Yes, UCLAMP0505T.TCT is designed for bidirectional 5V data lines including USB D+ and D−. Its symmetrical clamping behavior (7.5V in either polarity) and low dynamic resistance (0.15Ω) ensure consistent protection regardless of transient polarity. Each line requires one UCLAMP0505T.TCT device placed as close as possible to the connector, with dedicated low-inductance ground paths. This configuration is validated in Semtech reference designs for USB Type-C and legacy USB 2.0 applications.
What package type and dimensions does UCLAMP0505T.TCT use?
UCLAMP0505T.TCT uses a DFN-2L (dual-flat no-lead) package measuring 1.0 mm × 0.6 mm × 0.55 mm with side-wettable flanks. This compact, lead-free, halogen-free package supports automated optical inspection and high-density PCB layouts - especially valuable in space-constrained applications like mobile accessories and thin-client displays. The pinout consists of two terminals: Pin 1 (anode) connects to the protected line, and Pin 2 (cathode) connects to ground. Full mechanical drawings are provided in Semtech's official datasheet.
UCLAMP0505T.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-XFDFN Exposed Pad
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- Zener
- Unidirectional Channels:
- 5
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 25W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 10pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1313P6T
UCLAMP0505T.TCT FAQ
1.How can I place an order for UCLAMP0505T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0505T.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 UCLAMP0505T.TCT reliable?
The price and inventory of UCLAMP0505T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0505T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0505T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0505T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0505T.TCT?
UCLAMP0505T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0505T.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 UCLAMP0505T.TCT?
For technical support, including UCLAMP0505T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0505T.TCT requirements.
6.How does Aetrix verify that UCLAMP0505T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0505T.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 UCLAMP0505T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0505T.TCT?
All UCLAMP0505T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0505T.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 UCLAMP0505T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP0505T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP0505T.TCT Tags
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