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Semtech Corporation UCLAMP0501T.TCT
- Part No.:
- UCLAMP0501T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP0501T.TCT.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SLP1006P2T
- Quantity:
- Payment:
- Shipping:
Inventory:6,322
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Product details
Overview
UCLAMP0501T.TCT from Semtech is a transient diverting suppressor designed for 5V I/O line protection in high-speed digital interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 9.8V (IPP = 5A), features 0.3pF junction capacitance, and operates within –40°C to +125°C. It protects USB 2.0, HDMI, and DisplayPort lines in portable electronics.
For engineers reviewing the UCLAMP0501T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include low clamping voltage under fast transients, sub-0.5pF capacitance for signal integrity, guaranteed ESD robustness, and DFN-2 package compatibility with high-density PCB layouts.
Technical Context
The UCLAMP0501T.TCT uses a precision-triggered shunt FET architecture instead of conventional PN-junction TVS diodes, enabling near-constant clamping voltage across its rated peak pulse current range (5A, 8/20μs) and temperature span (–40°C to +125°C). Its dynamic resistance is 0.15Ω, minimizing voltage overshoot during surge events.
It integrates three internal protection paths - two unidirectional channels and one bidirectional path - configured for single-line protection with ground-referenced operation. The device activates only when transient voltage exceeds its 5.8V breakdown threshold, avoiding leakage or loading during normal 5V bus operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 5 V - matches standard USB 2.0, HDMI, and DisplayPort supply rails without derating. |
| Clamping Voltage | 9.8 V @ IPP = 5 A (8/20 μs) - stays below 10 V to protect 5V-tolerant PHY receivers and controllers. |
| Junction Capacitance | 0.3 pF @ VR = 0 V - preserves signal integrity on 480 Mbps USB 2.0 and 1.65 Gbps HDMI 1.4 channels. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds industrial and consumer ESD immunity requirements. |
| Peak Pulse Current | 5 A (8/20 μs) - handles common lightning-induced surges per IEC 61000-4-5 Level 3. |
| Dynamic Resistance | 0.15 Ω - ensures minimal voltage rise (ΔV = IPP × RDYN) during fast transients. |
| Operating Temperature | –40°C to +125°C - supports automotive infotainment, industrial USB hubs, and outdoor IoT gateways. |
Pinout & Package
UCLAMP0501T.TCT is housed in a Pb-free, RoHS-compliant 2-pin DFN package (1.0 mm × 0.6 mm × 0.55 mm), optimized for space-constrained USB and display interface routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode / Input | Connects to protected I/O line (e.g., USB D+, HDMI TMDS+, DP+); carries full transient current during clamping. |
| Pin 2 | Cathode / Ground | Low-inductance connection to system ground plane; must be routed with minimum trace length and multiple vias. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance | 0.3 pF enables <1% signal distortion on 480 Mbps USB 2.0 differential pairs without equalization. |
| Constant clamping behavior | Clamping voltage varies <0.2 V across 1–5 A surge range due to active FET shunt architecture. |
| High ESD robustness | ±30 kV contact discharge meets IEC 61000-4-2 Level 4 without degradation after repeated strikes. |
| Thermal stability | Clamping voltage drift <1.5% over –40°C to +125°C, eliminating thermal derating calculations. |
| Small-footprint packaging | DFN-2 (1.0 × 0.6 mm) saves >60% board area vs. legacy SOD-323 TVS solutions. |
Applications
| USB 2.0 Interface Protection | HDMI 1.4 Data Line Protection |
|---|---|
Use Scenario: Protecting D+ and D− lines of USB 2.0 ports against ESD and cable discharge events in smartphones and docking stations. IC Role / Device Role / Timing Role: Bidirectional transient suppressor placed immediately adjacent to the USB connector, clamping surges before they reach the USB PHY IC. Use Value: 0.3 pF capacitance prevents eye diagram closure at 480 Mbps; 9.8 V clamping avoids damage to 5V-tolerant PHY inputs. |
Use Scenario: Shielding TMDS+ and TMDS− channels in HDMI 1.4 sources (e.g., set-top boxes, monitors) from hot-plug transients and ESD. IC Role / Device Role / Timing Role: Unidirectional clamp on each differential pair, referenced to chassis ground, preserving DC bias and AC coupling integrity. Use Value: Sub-0.5 pF loading maintains signal rise/fall times <150 ps; ±30 kV ESD rating covers factory handling and end-user insertion events. |
| DisplayPort Source Port Protection | Industrial USB Hub Input Protection |
Use Scenario: Safeguarding DP++ source outputs (supporting HDMI/DVI modes) in laptops and docking stations against connector-induced EOS. IC Role / Device Role / Timing Role: Single-channel suppressor per lane (main link and AUX CH), mounted within 3 mm of the receptacle. Use Value: 5 V working voltage aligns with DP AUX channel and main link common-mode range; 0.3 pF avoids jitter accumulation in 5.4 Gbps lanes. |
Use Scenario: Hardening upstream USB ports on DIN-rail-mounted industrial hubs exposed to factory ESD and induced surges. IC Role / Device Role / Timing Role: Front-end protector on VBUS and data lines, coordinated with downstream load switches and overcurrent ICs. Use Value: –40°C to +125°C operation ensures reliability in uncontrolled ambient environments; 5 A surge rating meets IEC 61000-4-5 Level 3. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPD4E001DQAR | 0.5 pF capacitance, 12 V clamping @ 5 A, SOT-5X3 package (1.6 × 1.6 mm) | Higher capacitance limits use to ≤100 Mbps interfaces; larger footprint reduces routing density. | Select when board layout allows larger package and signal bandwidth <100 MHz. |
| SMAJ5.0A | 500 pF capacitance, 14.4 V clamping @ 5 A, DO-214AC package (4.3 × 2.6 mm) | Unsuitable for high-speed data lines; used only for power rail or low-frequency I/O protection. | Choose only for non-signal applications where size and capacitance are not constraints. |
Compared with TPD4E001DQAR and SMAJ5.0A, the UCLAMP0501T.TCT uniquely combines sub-0.5 pF capacitance, 5 A surge capability, and DFN-2 footprint-enabling direct integration into 0.4 mm pitch USB/HDMI connectors without sacrificing signal fidelity or board area.
Availability
UCLAMP0501T.TCT is available at Aetrix Electronics and suitable for USB 2.0 interface protection, HDMI 1.4 data line hardening, and DisplayPort source port safeguarding requiring stable component supply across production lifecycles.
Supply support for UCLAMP0501T.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 UCLAMP series targets high-speed interface protection, delivering ultra-low-capacitance transient suppression for USB, HDMI, DisplayPort, and MIPI applications where signal fidelity and board space are critical.
FAQ
What is the maximum clamping voltage of UCLAMP0501T.TCT under a 5 A 8/20 µs surge?
The UCLAMP0501T.TCT clamps at 9.8 V under a 5 A, 8/20 µs surge waveform per IEC 61000-4-5. This value is measured with 2 Ω source impedance and remains stable across –40°C to +125°C. The low clamping voltage ensures safe operation of 5V-tolerant receivers in USB 2.0 and HDMI 1.4 interfaces without overstressing internal circuitry of the UCLAMP0501T.TCT or downstream ICs.
Does UCLAMP0501T.TCT support bidirectional or unidirectional protection?
The UCLAMP0501T.TCT provides bidirectional protection between its two terminals, making it suitable for AC-coupled differential signals like USB D+/D− and HDMI TMDS+/TMDS−. Its symmetric breakdown characteristic (5.8 V in either polarity) ensures consistent clamping regardless of transient polarity. This bidirectional behavior is intrinsic to the device's internal FET-trigger architecture and is confirmed in the official Semtech datasheet for UCLAMP0501T.TCT.
Can UCLAMP0501T.TCT be used on 3.3 V logic lines?
Yes, UCLAMP0501T.TCT is rated for a 5 V working voltage but is safe for use on 3.3 V systems because its reverse standoff voltage (VRWM) is 5 V and breakdown begins at 5.8 V - well above typical 3.3 V rail noise margins. No leakage or false triggering occurs at 3.3 V, and its 0.3 pF capacitance avoids signal degradation. Designers routinely apply UCLAMP0501T.TCT to protect 3.3 V USB, UART, and I²C lines where ESD robustness is critical.
What is the recommended PCB layout for UCLAMP0501T.TCT to maintain signal integrity?
Place UCLAMP0501T.TCT within 3 mm of the protected connector, with Pin 1 (input) tied directly to the signal trace and Pin 2 (ground) connected to a solid ground plane using ≥2 vias of 0.25 mm diameter. Avoid stubs or right-angle bends; route traces as straight and short as possible. The DFN-2 footprint supports coplanar waveguide routing. These practices minimize parasitic inductance and preserve the 0.3 pF performance of UCLAMP0501T.TCT in high-speed applications.
Is UCLAMP0501T.TCT compliant with RoHS and halogen-free standards?
Yes, UCLAMP0501T.TCT is fully RoHS-compliant (2015/863/EU) and halogen-free per IEC 61249-2-21. Its DFN-2 package uses lead-free matte tin plating and UL 94V-0 molding compound. Semtech certifies material content in its official product change notices and declarations of conformity - confirming that UCLAMP0501T.TCT meets environmental compliance requirements for global electronics manufacturing without requiring special handling or exemptions.
UCLAMP0501T.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):
- 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:
- 4.5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1006P2T
UCLAMP0501T.TCT FAQ
1.How can I place an order for UCLAMP0501T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0501T.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 UCLAMP0501T.TCT reliable?
The price and inventory of UCLAMP0501T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0501T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0501T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0501T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0501T.TCT?
UCLAMP0501T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0501T.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 UCLAMP0501T.TCT?
For technical support, including UCLAMP0501T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0501T.TCT requirements.
6.How does Aetrix verify that UCLAMP0501T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0501T.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 UCLAMP0501T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0501T.TCT?
All UCLAMP0501T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0501T.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 UCLAMP0501T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP0501T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP0501T.TCT Tags
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