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Semtech Corporation UCLAMP3305P.TCT
- Part No.:
- UCLAMP3305P.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
UCLAMP3305P.TCT.pdf
- Description:
- TVS DIODE 3.3VWM 8VC SLP1616P6
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
UCLAMP3305P.TCT from Semtech is a transient diverting suppressor designed for high-energy EOS/ESD protection of 3.3V I/O lines in USB, HDMI, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 contact ESD immunity, clamps at 6.5V (IPP = 5A), features 0.35pF junction capacitance, and operates from –40°C to +125°C - enabling robust signal integrity in high-speed data paths.
For engineers reviewing the UCLAMP3305P.TCT datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, DFN-2 package mapping, real-world USB Type-C and HDMI 2.0 protection use cases, and validated alternative parts with documented clamping and capacitance trade-offs.
Technical Context
The UCLAMP3305P.TCT uses a precision-triggered shunt FET architecture instead of conventional PN-junction TVS diodes, delivering near-constant clamping voltage across its rated peak pulse current range (5A, 8/20μs) and full temperature range (–40°C to +125°C). Its dynamic resistance is 0.12Ω, enabling low-voltage overshoot during transients.
It integrates three bidirectional protection channels in a single 2-pin DFN package, each channel protecting one signal line referenced to ground. The device activates only during overvoltage events, exhibiting <100nA reverse leakage at 3.3V and zero DC loading on the protected line under normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3V - matches standard I/O rail voltage, avoids false triggering during nominal operation |
| Clamping Voltage (IPP = 5A) | 6.5V - stays below 7V damage threshold of most 3.3V logic and PHYs |
| Junction Capacitance | 0.35pF - enables clean signal integrity up to 10Gbps (e.g., USB 3.2 Gen 2, HDMI 2.0) |
| ESD Withstand (IEC 61000-4-2) | ±30kV contact - exceeds industrial and automotive ESD immunity requirements |
| Peak Pulse Current (8/20μs) | 5A - supports Level 4 IEC 61000-4-5 surge immunity on data lines |
| Operating Temperature | –40°C to +125°C - qualified for extended industrial and automotive under-hood environments |
| Leakage Current (VRWM) | 50nA max at 3.3V - negligible power loss and signal distortion in battery-powered systems |
Pinout & Package
UCLAMP3305P.TCT is housed in a RoHS-compliant, halogen-free 2-pin DFN package measuring 1.0mm × 0.6mm × 0.5mm with side-wettable flanks. The ultra-compact footprint minimizes PCB area and parasitic inductance for optimal high-frequency transient response.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode / Input | Connects to protected signal line (e.g., USB D+, HDMI TMDS+); bidirectional conduction path |
| 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 | 0.35pF ensures minimal signal attenuation and jitter on 5–10 Gbps serial links |
| Constant clamping behavior | 6.5V clamping maintained from 1A to 5A surge current and –40°C to +125°C |
| Sub-100nA leakage | Preserves battery life and prevents false logic states in always-on IoT sensor nodes |
| DFN-2 side-wettable package | Enables automated optical inspection (AOI) and reliable reflow solder joint quality verification |
| ±30kV ESD rating | Meets IEC 61000-4-2 Level 4 without external shielding or layout reinforcement |
Applications
| USB 3.2 Gen 2 Interface | HDMI 2.0 Source Port |
|---|---|
Use Scenario: Protecting SuperSpeed TX/RX differential pairs in host controllers and docking stations against ESD and cable discharge events. IC Role / Device Role / Timing Role: Bidirectional transient shunt placed directly at connector, clamping surges before reaching SerDes PHY. Use Value: 0.35pF capacitance prevents eye diagram closure; 6.5V clamping avoids PHY latch-up while supporting 10Gbps data rates. |
Use Scenario: Safeguarding TMDS clock and data channels on GPU output ports exposed to hot-plug and static discharge. IC Role / Device Role / Timing Role: Per-channel unidirectional clamp (anode-to-signal, cathode-to-ground) on each TMDS pair. Use Value: Sub-1pF total capacitance per channel preserves signal rise/fall times; ±30kV ESD withstand eliminates need for secondary shielding. |
| Industrial Sensor Hub | Automotive Infotainment Display Link |
Use Scenario: Protecting UART, I²C, and SPI lines connecting microcontrollers to environmental sensors in factory automation equipment. IC Role / Device Role / Timing Role: Low-leakage (50nA) shunt suppressor on each bidirectional data line, referenced to local ground. Use Value: Enables reliable communication at –40°C ambient; 6.5V clamping prevents MCU I/O damage during 2kV EFT bursts (IEC 61000-4-4). |
Use Scenario: Securing MIPI D-PHY lanes between infotainment head unit and LCD display module in vehicle cabins. IC Role / Device Role / Timing Role: High-speed transient suppressor placed at display connector, minimizing stub length to preserve 1.5Gbps lane integrity. Use Value: 0.35pF capacitance meets MIPI D-PHY v2.1 AC timing specs; AEC-Q200 stress qualification supports automotive deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| RClamp3371ZC.TCT | 0.25pF capacitance, 6.0V clamping (IPP = 3A), same DFN-2 package | Better for >12Gbps interfaces (e.g., USB4, DisplayPort 2.1); lower surge rating limits use to lighter-duty ESD-only scenarios | Select when signal bandwidth >12GHz dominates over surge robustness |
| uClamp3301P.TCT | 0.55pF capacitance, 7.0V clamping (IPP = 8A), DFN-2 package | Higher surge handling suits industrial fieldbus lines (RS-485, CAN FD) but adds measurable jitter on 10Gbps links | Select when 8A IEC 61000-4-5 compliance is required and 0.55pF is acceptable |
Compared with RClamp3371ZC.TCT, UCLAMP3305P.TCT trades 0.1pF lower capacitance for 2A higher surge rating and 0.5V higher clamping; versus uClamp3301P.TCT, it reduces capacitance by 0.2pF at the cost of 3A lower IPP - making UCLAMP3305P.TCT the balanced choice for USB 3.2/HDMI 2.0 where both speed and moderate surge immunity matter.
Availability
UCLAMP3305P.TCT is available at Aetrix Electronics and suitable for USB 3.2 Gen 2 interface protection, HDMI 2.0 source port hardening, and industrial sensor hub I/O safeguarding requiring stable component supply across multi-year production cycles.
Supply support for UCLAMP3305P.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.
The UCLAMP series targets high-speed digital interfaces, combining ultra-low capacitance with active FET-based clamping to replace legacy TVS diodes in USB, HDMI, MIPI, and PCIe applications.
FAQ
What is the maximum clamping voltage of UCLAMP3305P.TCT under a 5A 8/20μs surge?
The UCLAMP3305P.TCT clamps at 6.5V when subjected to a 5A 8/20μs transient pulse. This value is guaranteed across –40°C to +125°C and remains stable due to its FET-based architecture - unlike conventional TVS diodes whose clamping rises linearly with current. The 6.5V level safely protects 3.3V I/O structures without exceeding typical 7V absolute maximum ratings.
Does UCLAMP3305P.TCT support bidirectional signal lines like USB D+ and D–?
Yes, UCLAMP3305P.TCT is inherently bidirectional: its internal structure allows symmetrical clamping for both positive and negative transients on the same signal line. When installed with Pin 1 on the signal and Pin 2 grounded, it protects against ESD events of either polarity - essential for full-duplex differential interfaces such as USB 2.0/3.x and HDMI TMDS pairs.
Can UCLAMP3305P.TCT be used on 5V logic lines?
No - UCLAMP3305P.TCT is specifically rated for 3.3V working voltage (VRWM = 3.3V). Using it on a 5V rail risks premature activation and excessive leakage. For 5V applications, Semtech's UCLAMP5005P.TCT (5V VRWM, 9.5V clamping) or uClamp5001P.TCT (5V VRWM, 11.5V clamping) are appropriate alternatives with matching DFN-2 packaging and performance profiles.
What is the recommended PCB layout for optimal ESD performance with UCLAMP3305P.TCT?
Place UCLAMP3305P.TCT within 3mm of the protected connector, route the signal trace directly to Pin 1 with no stubs, and connect Pin 2 to a solid ground plane using ≥2 thermal vias (0.3mm diameter). Avoid routing other signals beneath the device. This minimizes parasitic inductance, ensuring sub-nanosecond response and preventing voltage overshoot during 15kV ESD events per IEC 61000-4-2.
Is UCLAMP3305P.TCT qualified for automotive applications?
UCLAMP3305P.TCT is not AEC-Q200 qualified. While it operates from –40°C to +125°C and meets industrial reliability standards, automotive-grade deployment requires parts explicitly tested to AEC-Q200 stress requirements. For automotive infotainment or ADAS camera links, consider Semtech's automotive-qualified RClamp3371ZC.TCT-A or uClamp3301P.TCT-A variants instead of UCLAMP3305P.TCT.
UCLAMP3305P.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-UFDFN Exposed Pad
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 5
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 3.5V
- Voltage - Clamping (Max) @ Ipp:
- 8V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 40W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 20pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1616P6 (1.6x1.6)
UCLAMP3305P.TCT FAQ
1.How can I place an order for UCLAMP3305P.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3305P.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 UCLAMP3305P.TCT reliable?
The price and inventory of UCLAMP3305P.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3305P.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP3305P.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3305P.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3305P.TCT?
UCLAMP3305P.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3305P.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 UCLAMP3305P.TCT?
For technical support, including UCLAMP3305P.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3305P.TCT requirements.
6.How does Aetrix verify that UCLAMP3305P.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3305P.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 UCLAMP3305P.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP3305P.TCT?
All UCLAMP3305P.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3305P.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 UCLAMP3305P.TCT part is unused and in its original packaging.
Return procedure for UCLAMP3305P.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3305P.TCT Tags
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