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Semtech Corporation UCLAMP3341ZATFT
- Part No.:
- UCLAMP3341ZATFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0201 (0603 Metric)
- Datasheet:
-
UCLAMP3341ZATFT.pdf
- Description:
- TVS DIODE 3.3V 10V SLP0603P2X3F
- Quantity:
- Payment:
- Shipping:
Inventory:9,046
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Product details
Overview
UCLAMP3341ZATFT from Semtech is a bidirectional transient voltage suppression (TVS) diode designed for board-level ESD and electrical overstress (EOS) protection of 3.3 V data lines. It delivers ±30 kV IEC 61000-4-2 contact/air ESD immunity, ±10 A IEC 61000-4-5 lightning surge capability, and low 5.0 V clamping voltage at 10 A, in an ultra-small 0201 SLP0603P2X3F package (0.6 × 0.3 × 0.25 mm).
For engineers reviewing the UCLAMP3341ZATFT datasheet, pinout, applications, or equivalent options, key selection criteria include its 3.3 V working voltage, 0.09 Ω dynamic resistance, 9.2–15 pF junction capacitance, symmetrical 2-pin configuration, and suitability for high-density portable interfaces such as SIM card slots and USB data lines.
Technical Context
The UCLAMP3341ZATFT employs silicon-avalanche solid-state technology to achieve fast response (<1 ns), low clamping, and no degradation under repeated ESD events. Its bidirectional structure enables symmetric protection of AC-coupled or differential signal lines without polarity constraints.
Designed for single-line protection, it operates with a 3.3 V reverse stand-off voltage (VRWM), 3.65–5.75 V breakdown (VBR at 50 µA), and maintains sub-50 nA leakage at VRWM - enabling compatibility with low-power, noise-sensitive 3.3 V I/O circuits in mobile and embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 3.3 V - matches standard 3.3 V I/O rail; ensures stable operation without false triggering. |
| ESD Withstand | ±30 kV (IEC 61000-4-2 contact/air) - exceeds industrial and consumer ESD immunity requirements. |
| Surge Rating | ±10 A (8/20 µs, IEC 61000-4-5) - provides robust lightning/surge protection for exposed ports. |
| Clamping Voltage | 5.0–6.0 V at 10 A - limits transient voltage to safe levels for downstream 3.3 V logic. |
| Dynamic Resistance | 0.09 Ω typical - minimizes voltage overshoot during fast transients via low impedance path. |
| Junction Capacitance | 9.2–15 pF at 0 V - low enough for USB 2.0, SIM, and SDIO signal integrity preservation. |
| Package Size | 0.6 × 0.3 × 0.25 mm - enables placement directly at connector entry points in space-constrained PCBs. |
Pinout & Package
UCLAMP3341ZATFT is housed in a 2-pin SLP0603P2X3F (0201) package with NiAu lead finish and symmetrical construction. The device is electrically bidirectional - Pin 1 and Pin 2 are interchangeable for line-to-ground protection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Anode/Cathode (symmetrical) | Interchangeable terminal; connects to protected line (e.g., SIM CLK or USB D+). |
| Pin 2 | Anode/Cathode (symmetrical) | Interchangeable terminal; connects to system ground or common reference plane. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional ESD Clamping | Enables single-device protection of AC signals (e.g., USB, SIM, SDIO) without polarity concerns. |
| Ultra-Low Dynamic Resistance | 0.09 Ω typical ensures minimal voltage rise during 4–16 A TLP pulses, improving clamping fidelity. |
| Sub-50 nA Leakage | Preserves battery life and signal integrity in always-on 3.3 V I/O paths like SIM detection or card presence. |
| 0201 Footprint Compatibility | Supports automated placement and reflow per JEDEC J-STD-020; requires 0.075 mm stencil thickness. |
| RoHS/WEEE Compliant | Pb-free, halogen-free construction meets global environmental compliance mandates for consumer electronics. |
Applications
| SIM Card Interface Protection | USB 2.0 Data Line Protection |
|---|---|
Use Scenario: Protecting SIM clock, data, and reset lines in smartphones and IoT modules against hot-plug ESD and contact discharge. IC Role / Device Role / Timing Role: Bidirectional TVS diode placed adjacent to SIM connector to clamp transients before they reach baseband processor GPIOs. Use Value: Prevents latch-up and permanent damage to 3.3 V SIM interface circuitry while maintaining <15 pF loading for reliable 10 MHz clock integrity. | Use Scenario: Safeguarding USB D+ and D− lines in portable chargers, docking stations, and OTG accessories. IC Role / Device Role / Timing Role: Line-to-ground TVS on each differential pair, leveraging symmetry to avoid signal skew or imbalance. Use Value: Delivers ±30 kV ESD immunity without degrading USB 2.0 eye diagram due to low 9.2–15 pF capacitance and 0.09 Ω dynamic resistance. |
| Tablet PC SDIO Interface | Wireless Headset Audio/Control Lines |
Use Scenario: Shielding SDIO command, clock, and data lines in tablet motherboards from ESD during card insertion or stylus interaction. IC Role / Device Role / Timing Role: One UCLAMP3341ZATFT per line, mounted at edge connector to minimize trace inductance before protection. Use Value: Ensures 3.3 V SDIO timing margins remain intact with clamping voltage held to ≤6.0 V at 10 A surge, preventing data corruption. | Use Scenario: Protecting analog audio paths (MIC bias, HPH_R/L) and digital control lines (ANC, button detect) in Bluetooth headsets. IC Role / Device Role / Timing Role: Low-leakage (≤50 nA) TVS on 3.3 V biased microphone inputs and push-button interrupt lines. Use Value: Eliminates audible pop/click during ESD events while avoiding DC offset shift or bias current disruption in sensitive analog front ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ESD protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1003-01UTG | Higher 12 pF typical capacitance; 3.3 V VRWM; ±30 kV ESD rating; SOD-523 package (1.2 × 0.8 mm). | Larger footprint limits routing density; better suited for less space-constrained USB or HDMI ports. | Select when higher surge margin (12 A) is prioritized over size, and board area permits larger package. |
| ESD321DPYR | Lower 5.5 pF max capacitance; 3.3 V VRWM; ±25 kV ESD; 0201 X2SON package (0.6 × 0.3 mm); unidirectional. | Unidirectional architecture requires careful polarity assignment; optimized for ultra-low-capacitance RF/analog lines. | Choose for RF-front-end protection where <6 pF is mandatory, accepting unidirectional layout constraints. |
Compared with SP1003-01UTG and ESD321DPYR, UCLAMP3341ZATFT uniquely balances ultra-small 0201 size, bidirectional symmetry, and 0.09 Ω dynamic resistance - making it optimal for high-density 3.3 V data interfaces where layout flexibility and clamping fidelity are critical.
Availability
UCLAMP3341ZATFT is available at Aetrix Electronics and suitable for SIM card interfaces, USB 2.0 data lines, and tablet SDIO applications requiring stable component supply, consistent tape-and-reel packaging (15,000 pcs/reel, 7″), and RoHS-compliant manufacturing.
Supply support for UCLAMP3341ZATFT 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 power management, protection, sensing, and wireless infrastructure.
The µClamp® product line was developed specifically for board-level ESD/EOS protection in portable and high-density electronics, emphasizing ultra-small footprints, low clamping, and reliability across consumer, computing, and communications platforms.
FAQ
What is the maximum clamping voltage of UCLAMP3341ZATFT under IEC 61000-4-5 surge conditions?
The UCLAMP3341ZATFT exhibits a maximum clamping voltage of 6.0 V when subjected to a 10 A, 8/20 µs surge per IEC 61000-4-5 (with 2 Ω source impedance). This value is measured using the 1.2/50 µs voltage and 8/20 µs current combination waveform, ensuring predictable voltage limiting for protected 3.3 V circuits. The UCLAMP3341ZATFT maintains this performance across its full operating temperature range of –40 °C to +85 °C.
Is UCLAMP3341ZATFT suitable for protecting high-speed USB 2.0 differential pairs?
Yes, UCLAMP3341ZATFT is suitable for USB 2.0 data line protection due to its 9.2–15 pF junction capacitance at 0 V, which preserves signal integrity up to 480 Mbps without significant eye closure. Its bidirectional symmetry avoids differential skew, and its 0.09 Ω dynamic resistance ensures rapid energy diversion. The UCLAMP3341ZATFT must be placed as close as possible to the USB connector with matched trace lengths to maintain impedance balance.
Does UCLAMP3341ZATFT require orientation-specific placement on the PCB?
No, UCLAMP3341ZATFT does not require orientation-specific placement. As stated in the datasheet, the device is electrically symmetrical - Pin 1 and Pin 2 are functionally identical and interchangeable. This allows flexible routing for line-to-ground protection without polarity constraints, simplifying layout and reducing assembly errors. The UCLAMP3341ZATFT marking code (W) is centered and non-directional.
What is the recommended solder stencil thickness for UCLAMP3341ZATFT assembly?
Semtech recommends a laser-cut, electro-polished solder stencil with 0.075 mm (0.003″) thickness for UCLAMP3341ZATFT. A 0.100 mm (0.004″) stencil may be used if aperture dimensions are slightly increased to maintain ≥0.66 area ratio. The UCLAMP3341ZATFT's SLP0603P2X3F package demands precise paste volume control to prevent bridging or insufficient wetting - Type 4 or finer solder paste is required.
How does the dynamic resistance of UCLAMP3341ZATFT impact ESD protection performance?
The UCLAMP3341ZATFT's 0.09 Ω typical dynamic resistance (measured between 4 A and 16 A TLP pulses) directly reduces voltage overshoot during fast ESD events, resulting in tighter clamping control. Lower RDYN means less IR drop across the device during transient conduction, allowing the UCLAMP3341ZATFT to hold protected lines closer to their safe operating window - especially critical for 3.3 V logic with narrow voltage margins.
UCLAMP3341ZATFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0201 (0603 Metric)
- Series:
- MicroClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 3.3V
- Voltage - Breakdown (Min):
- -
- Voltage - Clamping (Max) @ Ipp:
- -
- Current - Peak Pulse (10/1000µs):
- 10A (8/20µs)
- Power - Peak Pulse:
- -
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (0.6x0.3)
UCLAMP3341ZATFT FAQ
1.How can I place an order for UCLAMP3341ZATFT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP3341ZATFT 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 UCLAMP3341ZATFT reliable?
The price and inventory of UCLAMP3341ZATFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP3341ZATFT is usually 5 days.
3.What payment methods are accepted for UCLAMP3341ZATFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP3341ZATFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP3341ZATFT?
UCLAMP3341ZATFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP3341ZATFT 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 UCLAMP3341ZATFT?
For technical support, including UCLAMP3341ZATFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP3341ZATFT requirements.
6.How does Aetrix verify that UCLAMP3341ZATFT is sourced from the original manufacturer or authorized distributors?
All UCLAMP3341ZATFT 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 UCLAMP3341ZATFT meets industry standards.
7.What is the process for return or replacement of UCLAMP3341ZATFT?
All UCLAMP3341ZATFT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP3341ZATFT, 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 UCLAMP3341ZATFT part is unused and in its original packaging.
Return procedure for UCLAMP3341ZATFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP3341ZATFT Tags
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