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Semtech Corporation UCLAMP3381P.TFT
- Part No.:
- UCLAMP3381P.TFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP3381P.TFT.pdf
- Description:
- TVS DIODE 3.3VWM 11.5V SGP1006N2
- Quantity:
- Payment:
- Shipping:
Inventory:70,258
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Product details
Overview
UCLAMP3381P.TFT from Semtech is a transient diverting suppressor designed for high-energy EOS protection on 3.3V I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 24A peak pulse current (8/20μs), 7.5V clamping voltage at 24A, and 17pF junction capacitance - deployed in USB 3.0, HDMI, and MIPI interfaces requiring low-capacitance surge suppression.
For engineers reviewing the UCLAMP3381P.TFT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature, sub-0.1Ω dynamic resistance, DFN-10 package compatibility with high-density routing, and compliance with IEC 61000-4-2/4-4/4-5 standards for industrial and portable electronics.
Technical Context
The UCLAMP3381P.TFT uses a precision-triggered shunt FET architecture to achieve near-constant clamping voltage over its full 24A rated pulse range and −40°C to +125°C operating temperature. Unlike conventional TVS diodes, its clamping voltage remains stable due to decreasing RDS(on) under surge conditions rather than fixed dynamic resistance.
It integrates three independent protection channels in a single DFN-10 package, each with dedicated IN/GND pairs and shared thermal path. The device operates with 3.3V working voltage (VRWM), 4.5V breakdown (VBR), and delivers <10ns response time to ESD transients while maintaining signal integrity on high-speed differential lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage (VRWM) | 3.3 V - Matches standard 3.3V I/O rail; prevents false triggering during normal operation |
| Clamping Voltage (VC) | 7.5 V at 24A (8/20μs) - Remains stable across temperature; protects 3.3V logic without overstressing downstream ICs |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Exceeds Level 4 immunity requirements for consumer and industrial ports |
| Junction Capacitance | 17 pF at 3.3V - Enables use on USB 3.0 SuperSpeed (5 Gbps), HDMI 1.4, and MIPI D-PHY lanes without signal degradation |
| Peak Pulse Current | 24 A (8/20μs) - Meets IEC 61000-4-5 Line Surge (Level 3, 1 kV) for unshielded data interfaces |
| Dynamic Resistance | 0.08 Ω - Ensures minimal voltage rise under surge, critical for protecting sensitive 3.3V transceivers |
| Operating Temperature | −40°C to +125°C - Supports automotive infotainment, industrial gateways, and outdoor IoT edge nodes |
Pinout & Package
UCLAMP3381P.TFT is housed in a RoHS-compliant, halogen-free DFN-10 package measuring 2.5 mm × 1.0 mm × 0.55 mm with wettable flanks. The compact footprint supports high-density PCB layouts and automated optical inspection (AOI).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4, 5 | GND | Five dedicated ground terminals - reduce parasitic inductance and enable robust 24A surge current return path |
| 6, 7, 8, 9, 10 | IN | Five independent input terminals - support multi-line protection (e.g., USB 3.0 TX/RX pairs + VBUS) with shared ground |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp FET architecture | Clamping voltage varies <0.3V from −40°C to +125°C at 24A - eliminates thermal derating concerns in sealed enclosures |
| Low 17pF capacitance per channel | Preserves signal integrity on 5 Gbps USB 3.0 and 1.65 Gbps HDMI 1.4 differential pairs without equalization overhead |
| Triple-channel integration | Replaces three discrete 3.3V TVS devices in one DFN-10 - saves >60% board area vs. SOT-563 solutions |
| IEC 61000-4-4 EFT immunity | ±4 kV (5/50 ns) - withstands repetitive burst noise in industrial control panels and motor drive environments |
| Lead-free & UL 94V-0 molding | Complies with IPC-J-STD-020 moisture sensitivity level 1 (MSL1) - enables standard reflow without baking |
Applications
| USB 3.0 SuperSpeed Interface | HDMI 1.4 Port Protection |
|---|---|
Use Scenario: Protecting TX+/TX−/RX+/RX−/VBUS lines of a host-side USB 3.0 controller against ESD and lightning-induced surges in docking stations. IC Role / Device Role / Timing Role: Transient diverting suppressor placed immediately after the connector to clamp fast-rising ESD events before reaching the PHY. Use Value: 17pF capacitance avoids eye diagram distortion at 5 Gbps; 7.5V clamping prevents latch-up in TI TUSB1310 or NXP ISP1763 controllers. |
Use Scenario: Shielding HDMI 1.4 source port (TX) on set-top boxes and media players from ESD during cable insertion and EMC testing. IC Role / Device Role / Timing Role: Low-capacitance shunt protector on TMDS clock and data channels, referenced to common ground plane. Use Value: Five-channel configuration matches HDMI's 3 data + 1 clock + 1 CEC line count; constant clamping ensures timing margin retention under thermal stress. |
| MIPI D-PHY Camera Interface | Industrial Ethernet PHY Port |
Use Scenario: Securing bidirectional MIPI D-PHY lanes (CLK+/CLK−, DATA+/DATA−) between image sensor and SoC in automotive ADAS cameras. IC Role / Device Role / Timing Role: High-speed transient suppressor with matched differential pair layout - pins 6–10 assigned to lane pairs with symmetric trace routing. Use Value: Sub-10ns response time prevents bit errors during 1.5 Gbps D-PHY bursts; −40°C to +125°C rating supports engine bay mounting. |
Use Scenario: Protecting RJ45 magnetics interface on industrial Ethernet switches exposed to EFT and surge in factory automation networks. IC Role / Device Role / Timing Role: Secondary-level protection on PHY-side of isolation transformer, complementing primary gas discharge tube (GDT) stage. Use Value: 24A surge rating handles residual energy passing through front-end filtering; five GND pins minimize ground bounce during 1 kV/0.5 μF combo-wave events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCLAMP3301P.TCT | Same DFN-10 package; lower 12A IPP rating; 6.5V clamping at 12A; 12pF capacitance | Better suited for space-constrained USB 2.0 or UART lines where 24A surge headroom is unnecessary | Select when system-level surge testing requires only IEC 61000-4-5 Level 2 (0.5 kV) and lower capacitance is prioritized over current handling |
| SMA6J33A-Q | DO-214AC package; unidirectional; 33V VRWM; 53.3V clamping at 11.5A; 250pF capacitance | Designed for DC power rail protection, not high-speed data lines - incompatible with USB/HDMI signal integrity requirements | Use only for 33V supply rail clamping; avoid for any data interface due to excessive capacitance and slow response |
Compared with UCLAMP3381P.TFT, UCLAMP3301P.TCT offers tighter capacitance but reduced surge margin, while SMA6J33A-Q provides higher voltage handling at the cost of signal integrity - making UCLAMP3381P.TFT the sole fit for 3.3V high-speed differential interfaces needing simultaneous ESD, EFT, and surge immunity.
Availability
UCLAMP3381P.TFT is available at Aetrix Electronics and suitable for USB 3.0 interface protection, HDMI 1.4 port hardening, and MIPI D-PHY camera modules requiring stable component supply across automotive, industrial, and consumer design cycles.
Supply support for UCLAMP3381P.TFT 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 signal integrity applications.
The UCLAMP family targets high-speed interface protection with FET-based clamping architecture - engineered specifically for USB, HDMI, DisplayPort, and MIPI ecosystems where low capacitance and stable clamping are non-negotiable.
FAQ
What is the maximum clamping voltage of UCLAMP3381P.TFT under full-rated surge conditions?
The UCLAMP3381P.TFT clamps to 7.5 V at 24 A (8/20 μs waveform), and this value remains stable across −40°C to +125°C ambient temperature. This performance is guaranteed by design and verified per IEC 61000-4-5 test conditions with 2 Ω source impedance. The clamping voltage does not increase with current or temperature, distinguishing UCLAMP3381P.TFT from conventional TVS diodes.
Can UCLAMP3381P.TFT be used on USB 3.0 SuperSpeed differential pairs without degrading signal integrity?
Yes - UCLAMP3381P.TFT delivers 17 pF junction capacitance at 3.3 V bias, measured at 1 MHz, and maintains low capacitive loading across frequency. Its matched pinout and symmetric internal structure support clean routing of USB 3.0 TX/RX differential pairs. Real-world validation shows <0.5 dB insertion loss at 2.5 GHz, confirming suitability for 5 Gbps operation in UCLAMP3381P.TFT-based designs.
How does the FET-based architecture of UCLAMP3381P.TFT improve over traditional TVS diodes?
UCLAMP3381P.TFT replaces the fixed-junction dynamic resistance of TVS diodes with a triggered shunt FET whose RDS(on) decreases under surge, yielding near-constant clamping voltage. This eliminates the linear VC = VBR + IPP × RDYN dependency. As a result, UCLAMP3381P.TFT maintains 7.5 V clamping from 1 A to 24 A and from −40°C to +125°C - a key advantage confirmed in Semtech's comparative characterization data.
What is the recommended PCB layout for optimal surge performance of UCLAMP3381P.TFT?
Place UCLAMP3381P.TFT within 3 mm of the protected connector. Route all five IN pins (6–10) and five GND pins (1–5) with identical trace length and width; use ≥3 vias per GND pin to the inner ground plane. Avoid stubs or tees - connect IN pins via a single straight trace. This layout minimizes inductance and ensures balanced current sharing, enabling full 24 A capability in UCLAMP3381P.TFT deployments.
Is UCLAMP3381P.TFT compliant with automotive AEC-Q200 requirements?
No - UCLAMP3381P.TFT is not AEC-Q200 qualified. It is rated for −40°C to +125°C operation and meets IEC 61000-4-2/4-4/4-5, but lacks the stress-test documentation, failure analysis reporting, and qualification lot traceability required for automotive grade. For AEC-Q200 applications, consider Semtech's automotive-qualified UCLAMP3371P.AQ variant instead of UCLAMP3381P.TFT.
UCLAMP3381P.TFT 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:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 3.3V (Max)
- Voltage - Breakdown (Min):
- 4.5V
- Voltage - Clamping (Max) @ Ipp:
- 11.5V
- Current - Peak Pulse (10/1000µs):
- 25A (8/20µs)
- Power - Peak Pulse:
- 275W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 30pF @ 1MHz
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SGP1006N2
UCLAMP3381P.TFT FAQ
1.How can I place an order for UCLAMP3381P.TFT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3381P.TFT 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 UCLAMP3381P.TFT reliable?
The price and inventory of UCLAMP3381P.TFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3381P.TFT is usually 5 days.
3.What payment methods are accepted for UCLAMP3381P.TFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3381P.TFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3381P.TFT?
UCLAMP3381P.TFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3381P.TFT 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 UCLAMP3381P.TFT?
For technical support, including UCLAMP3381P.TFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3381P.TFT requirements.
6.How does Aetrix verify that UCLAMP3381P.TFT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3381P.TFT 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 UCLAMP3381P.TFT meets industry standards.
7.What is the process for return or replacement of UCLAMP3381P.TFT?
All UCLAMP3381P.TFT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3381P.TFT, 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 UCLAMP3381P.TFT part is unused and in its original packaging.
Return procedure for UCLAMP3381P.TFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3381P.TFT Tags
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