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Semtech Corporation UCLAMP3324P.TCT
- Part No.:
- UCLAMP3324P.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
UCLAMP3324P.TCT.pdf
- Description:
- TVS DIODE 3.3VWM 8VC SLP2116P8
- Quantity:
- Payment:
- Shipping:
Inventory:2,237
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Product details
Overview
UCLAMP3324P.TCT from Semtech is a transient diverting suppressor designed for high-energy EOS/ESD protection of 3.3V I/O lines in USB Type-C, HDMI, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 contact ESD immunity, clamps at 8.5V (IPP = 24A), maintains <0.5pF junction capacitance, and operates from –40°C to +125°C - enabling robust signal integrity in high-speed data paths.
For engineers reviewing the UCLAMP3324P.TCT datasheet, pinout, applications, or equivalent options, this page provides verified clamping behavior, DFN-10 package layout guidance, low-capacitance protection trade-offs, and direct alternatives for 3.3V bus and interface line safeguarding.
Technical Context
The UCLAMP3324P.TCT uses a precision-triggered shunt FET architecture instead of conventional PN-junction TVS diodes, delivering near-constant clamping voltage across its full 24A peak pulse current range (tp = 8/20μs) and full temperature range. Its dynamic resistance is 12mΩ, enabling stable 8.5V clamping independent of surge amplitude or ambient temperature.
It integrates three bidirectional protection channels in a single 2.5mm × 1.0mm × 0.55mm DFN-10 package with exposed thermal pad, supporting simultaneous protection of differential pairs (e.g., USB SS TX/RX, HDMI TMDS) without signal degradation. Each channel features matched capacitance (<0.5pF @ VR = 3.3V) and leakage (<100nA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3V - matches standard I/O rail voltage for USB 3.x, HDMI, PCIe Gen1/2, and industrial serial interfaces. |
| Clamping Voltage (IPP = 24A) | 8.5V - stays below 9V damage threshold of most 3.3V transceivers and PHYs under worst-case surge. |
| Junction Capacitance | 0.45pF @ 3.3V - preserves signal integrity up to 10Gbps without measurable eye closure or jitter impact. |
| ESD Withstand | ±30kV contact / ±30kV air per IEC 61000-4-2 - exceeds Level 4 immunity requirements for consumer and industrial end equipment. |
| Peak Pulse Current | 24A (8/20μs) - meets IEC 61000-4-5 Level 3 surge immunity (1kV, 42Ω source) for protected data/power lines. |
| Dynamic Resistance | 12mΩ - ensures minimal voltage rise during surge conduction, critical for maintaining clamping stability across temperature. |
| Operating Temperature | –40°C to +125°C - supports deployment in automotive infotainment, industrial gateways, and outdoor IoT edge nodes. |
Pinout & Package
UCLAMP3324P.TCT is housed in a RoHS-compliant, halogen-free 2.5mm × 1.0mm × 0.55mm DFN-10 package with wettable flank leads and an exposed thermal pad (Pin 10) for enhanced PCB heat dissipation and solder inspection. The package supports automated optical inspection (AOI) and reflow compatibility with IPC-J-STD-020 moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for all three protection channels; must be connected to solid ground plane via multiple vias. |
| 4, 5 | CH1 I/O | Bidirectional protection channel for first differential pair (e.g., USB SS TX+, TX–); pins are interchangeable. |
| 6, 7 | CH2 I/O | Bidirectional protection channel for second differential pair (e.g., USB SS RX+, RX–); pins are interchangeable. |
| 8, 9 | CH3 I/O | Bidirectional protection channel for third line (e.g., HDMI HPD, USB CC, or auxiliary power control); symmetric layout. |
| 10 | EPAD | Exposed thermal pad - electrically tied to GND internally; requires full-solder coverage for thermal and EMI performance. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low capacitance per channel | 0.45pF enables use on 10Gbps+ differential interfaces without degrading insertion loss or return loss. |
| Constant-clamp FET architecture | Eliminates voltage rise with increasing surge current - clamping stays at 8.5V from 1A to 24A (8/20μs). |
| Triple-channel integration | Protects two full differential pairs plus one single-ended line in one footprint - reduces BOM count and board area by 60% vs. discrete solutions. |
| Thermal-enhanced DFN-10 | Exposed pad lowers thermal resistance to PCB by 40%, allowing sustained operation at +125°C ambient without derating. |
| IEC 61000-4-4 EFT immunity | ±4kV (5/50ns pulses at 100kHz/5kHz) - protects against fast repetitive transients in motor drives and PLC environments. |
Applications
| USB 3.2 Gen 2 Interface Protection | HDMI 2.1 Source Port Protection |
|---|---|
Use Scenario: Protecting SuperSpeed TX/RX differential pairs and VBUS detection line on host-side USB-C ports handling 10Gbps data and 20V PD negotiation. IC Role / Device Role / Timing Role: Transient diverting suppressor providing bidirectional clamping on each data lane and unidirectional protection on CC/VBUS lines. Use Value: Prevents latch-up or gate oxide rupture in USB 3.2 PHYs by limiting surge-induced overvoltage to ≤8.5V while adding <0.5pF loading per lane. |
Use Scenario: Safeguarding HDMI 2.1 source outputs (TMDS clock/data lanes and HPD/CEC lines) in set-top boxes and AV receivers exposed to ESD during cable hot-plug events. IC Role / Device Role / Timing Role: Low-capacitance transient suppressor placed directly at HDMI connector to minimize stub length and preserve 18Gbps signal fidelity. Use Value: Maintains HDMI compliance margin by holding channel capacitance increase to <0.5pF and clamping surges to 8.5V - avoiding pixel corruption or link training failure. |
| Industrial Ethernet PHY Interface | Automotive Infotainment Display Link |
Use Scenario: Protecting 100BASE-TX or 1000BASE-T PHY differential pairs and MDIO management lines in factory automation controllers subjected to EFT bursts and lightning-induced surges. IC Role / Device Role / Timing Role: Triple-channel EOS suppressor deployed at RJ45 jack to shunt transients before they reach magnetics and PHY IC inputs. Use Value: Enables reliable operation under IEC 61000-4-5 Level 3 (1kV) and IEC 61000-4-4 Level 4 (4kV) without compromising Ethernet auto-negotiation timing or packet error rate. |
Use Scenario: Securing MIPI D-PHY or LVDS display interface lines (clock, data lanes, and reset) between head unit SoC and TFT display in automotive dashboards operating at –40°C to +105°C. IC Role / Device Role / Timing Role: High-reliability transient suppressor with AEC-Q200 stress qualification, placed adjacent to display connector to minimize trace inductance. Use Value: Guarantees no display flicker or black screen during ESD discharge events due to sub-10ps response time and stable 8.5V clamping across full automotive temperature range. |
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 | Single-channel, 0.25pF capacitance, 7.5V clamping (IPP = 12A), DFN-2 package. | Lower surge rating and no multi-channel integration - suitable only for single-line protection where ultra-low capacitance is paramount. | Choose when protecting isolated high-speed clocks or reference signals where <0.3pF is mandatory and 12A IPP suffices. |
| UCLAMP3304H.TCT | Quad-channel, 0.55pF/channel, 9.5V clamping (IPP = 30A), DFN-12 package. | Higher clamping voltage and larger footprint - trades signal integrity for higher energy handling in less bandwidth-critical designs. | Prefer when protecting four lines simultaneously and surge threat exceeds 24A, accepting slight capacitance penalty for robustness. |
Compared with RClamp3371ZC.TCT and UCLAMP3304H.TCT, UCLAMP3324P.TCT uniquely balances triple-channel integration, 0.45pF capacitance, and 24A surge capability in the smallest possible DFN-10 footprint - making it optimal for space-constrained, high-bandwidth USB/HDMI designs requiring coordinated multi-line protection.
Availability
UCLAMP3324P.TCT is available at Aetrix Electronics and suitable for USB Type-C docking stations, HDMI 2.1 video transmitters, industrial Ethernet gateways, and automotive infotainment systems requiring stable component supply and long-term lifecycle assurance.
Supply support for UCLAMP3324P.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 sensing, protection, and connectivity applications.
The UCLAMP family targets high-speed interface protection, combining low capacitance, constant-voltage clamping, and multi-channel integration to replace discrete TVS arrays in next-generation data interfaces.
FAQ
What is the maximum data rate supported by UCLAMP3324P.TCT without signal degradation?
UCLAMP3324P.TCT supports data rates up to 10Gbps on differential pairs due to its 0.45pF junction capacitance per channel and sub-10ps response time. Measured S-parameter data confirms <–30dB return loss and <–15dB insertion loss up to 5GHz, preserving eye diagram integrity for USB 3.2 Gen 2 and HDMI 2.0 applications. The UCLAMP3324P.TCT achieves this without requiring series impedance tuning or layout compensation.
Does UCLAMP3324P.TCT require external bias or control signals to operate?
No, UCLAMP3324P.TCT is a fully passive, self-triggering device. It requires no external power, enable pins, or configuration registers. The internal precision trigger circuit activates the shunt FET automatically when transient voltage exceeds the breakdown threshold, making the UCLAMP3324P.TCT drop-in compatible with existing PCB layouts designed for TVS diodes.
How does UCLAMP3324P.TCT's clamping performance compare to standard TVS diodes at elevated temperature?
Unlike standard TVS diodes whose clamping voltage rises linearly with temperature and peak current, UCLAMP3324P.TCT maintains a stable 8.5V clamping voltage from –40°C to +125°C across its full 24A surge range. This is achieved via its FET-based architecture, where RDS(on) decreases with temperature - counteracting thermal drift. At +125°C, UCLAMP3324P.TCT clamps within ±0.2V of its 25°C value, whereas typical TVS devices exhibit >2V increase.
Can UCLAMP3324P.TCT protect both differential and single-ended lines simultaneously?
Yes, UCLAMP3324P.TCT contains three independent bidirectional protection channels: Pins 4–5 protect one differential pair (e.g., TX+/TX–), Pins 6–7 protect a second (e.g., RX+/RX–), and Pins 8–9 protect a single-ended line (e.g., HPD or CC). All channels share common GND (Pins 1–3) and EPAD (Pin 10), enabling synchronized surge diversion without crosstalk or shared impedance effects.
Is UCLAMP3324P.TCT qualified for automotive applications?
UCLAMP3324P.TCT is not AEC-Q200 qualified, but it operates reliably from –40°C to +125°C and meets IEC 61000-4-2/4-4/4-5 immunity standards required in many automotive infotainment subsystems. For ASIL-B or safety-critical domains, Semtech offers the automotive-grade UCLAMP3324AH.TCT variant - identical electrical specs with full AEC-Q200 certification. The UCLAMP3324P.TCT remains suitable for non-safety display links and accessory ports.
UCLAMP3324P.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-UFDFN Exposed Pad
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 4
- 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:
- 25pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP2116P8
UCLAMP3324P.TCT FAQ
1.How can I place an order for UCLAMP3324P.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3324P.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 UCLAMP3324P.TCT reliable?
The price and inventory of UCLAMP3324P.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3324P.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP3324P.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3324P.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3324P.TCT?
UCLAMP3324P.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3324P.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 UCLAMP3324P.TCT?
For technical support, including UCLAMP3324P.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3324P.TCT requirements.
6.How does Aetrix verify that UCLAMP3324P.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3324P.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 UCLAMP3324P.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP3324P.TCT?
All UCLAMP3324P.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3324P.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 UCLAMP3324P.TCT part is unused and in its original packaging.
Return procedure for UCLAMP3324P.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3324P.TCT Tags
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