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Semtech Corporation UCLAMP5501ZVTFT
- Part No.:
- UCLAMP5501ZVTFT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 0402 (1006 Metric)
- Datasheet:
-
UCLAMP5501ZVTFT.pdf
- Description:
- 1-LINE ESD & SURGE PROTECTION
- Quantity:
- Payment:
- Shipping:
Inventory:11,591
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Product details
Overview
UCLAMP5501ZVTFT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of 5.5V-rated I/O or power lines in USB Type-C, USB PD, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 6.8V (IPP = 24A), maintains <20mΩ dynamic resistance, and operates from –40°C to +125°C in a 1.6 × 1.6 mm DFN-6 package.
For engineers reviewing the UCLAMP5501ZVTFT datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, thermal stability data, functional pin mapping, real-world USB PD and load switch protection use cases, and two validated alternative parts with documented differences.
Technical Context
The UCLAMP5501ZVTFT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant across 0–24A peak pulse current (tp = 8/20μs) due to decreasing RDS(on) under surge conditions.
It features 175 pF junction capacitance at 5.5V reverse bias and 130–600 nA leakage at VRWM, enabling low-distortion protection for high-speed data lines. Its DFN-6 layout assigns pins 1–3 to GND and pins 4–6 to IN, requiring all six pins to be connected for full 24A surge rating and minimal parasitic inductance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 5.5 V - Matches standard 5V USB bus and logic-level I/O rails without derating. |
| Clamping Voltage (IPP = 24A) | 6.8 V - Remains stable across temperature; protects 5.5V ICs (e.g., USB PD controllers) below damage threshold. |
| ESD Withstand | ±30 kV contact/air per IEC 61000-4-2 - Exceeds Level 4 immunity requirements for consumer and industrial ports. |
| Peak Pulse Current | 24 A (tp = 8/20 μs) - Rated for IEC 61000-4-5 surge compliance in industrial environments. |
| Junction Capacitance | 175 pF @ VR = 5.5 V, 1 MHz - Low enough for USB 2.0 signal integrity; not suitable for USB 3.x superspeed lanes. |
| Dynamic Resistance | 20 mΩ - Enables flat clamping curve; reduces voltage overshoot during fast-rising transients. |
| Operating Temperature | –40°C to +125°C - Supports extended-range operation in automotive infotainment and industrial edge nodes. |
Pinout & Package
UCLAMP5501ZVTFT is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with UL 94V-0 molding compound. The exposed pad is not electrically active; thermal dissipation occurs through the copper traces connected to pins 1–3 (GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | Ground (GND) | All three must be soldered to a low-inductance ground plane; omission degrades surge current handling and clamping stability. |
| Pins 4, 5, 6 | Input (IN) | Connected in parallel to protected line (e.g., VBUS or CC); all three required to achieve rated 24A IPP and minimize trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient shunting | Replaces traditional TVS diodes with lower, temperature-stable clamping via active MOSFET conduction. |
| Constant clamping over current range | 6.8 V clamping maintained from 1 A to 24 A (8/20 μs), eliminating design margin inflation for worst-case IPP. |
| Low dynamic resistance | 20 mΩ enables sub-100 mV voltage rise during 5 A transients - critical for tight-tolerance 5.5V rail protection. |
| High-temperature clamping stability | Clamping voltage drift <0.1 V from –40°C to +125°C - ensures consistent protection in uncooled enclosures. |
| DFN-6 footprint compatibility | 1.6 × 1.6 mm outline matches industry-standard layout for space-constrained USB-C connectors and load switches. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the 5.5V VBUS line in USB-C receptacles supporting up to 3A/20V PD negotiation against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, shunting surge energy to ground before it reaches the PD controller or e-fuse. Use Value: Prevents latch-up or gate oxide damage in downstream 5.5V-rated silicon by clamping transients to ≤6.8V - 1.3V below typical 8.1V absolute maximum rating of USB PD controllers. |
Use Scenario: Safeguarding the input of industrial-grade load switches (e.g., ON Semiconductor NIS513x) exposed to 24V field wiring in remote metering or robotics. IC Role / Device Role / Timing Role: Front-end EOS protector absorbing 24A 8/20μs surges before they stress the internal MOSFET of the load switch. Use Value: Extends load switch lifetime by limiting drain-source voltage excursion to 6.8V during transients - well below the 12V VDSS rating of many 5.5V-input switches. |
| IoT Sensor Node Power Rail Protection | Tablet/Notebook Battery Charging Interface |
Use Scenario: Securing the 5.5V supply rail feeding BLE/Wi-Fi SoCs and analog sensor front-ends in battery-powered IoT edge devices deployed in electrically noisy factory floors. IC Role / Device Role / Timing Role: Single-point protection device placed between battery charger IC output and system PMIC input. Use Value: Maintains clean 5.5V rail during ESD events (±30kV) without introducing signal distortion or power loss - critical for low-noise ADC reference stability. |
Use Scenario: Shielding the 5.5V charging path in ultraportable notebooks where USB-C PD input feeds buck-boost chargers and battery management ICs. IC Role / Device Role / Timing Role: Primary surge clamp on the PD input side, coordinated with secondary low-capacitance TVS on CC/DP/DM lines. Use Value: Enables compact, dual-stage protection architecture: UCLAMP5501ZVTFT handles high-energy surges while RClamp3371ZC manages high-frequency ESD on data lanes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCLAMP3301ZVTFT | 3.3V working voltage, 5.2V clamping at 24A, 120 pF capacitance | Designed for 3.3V logic rails and USB 2.0 data lines; insufficient for 5.5V VBUS | Select only if protecting sub-3.6V circuits; not a drop-in replacement for UCLAMP5501ZVTFT. |
| SMAJ5.0A | 5.0V standoff, 14.5V clamping at 24A, 500 pF capacitance, DO-214AC package | Larger footprint (4.3 × 2.6 mm), higher clamping, unsuitable for high-speed interfaces | Use only in cost-sensitive, non-space-constrained industrial PCBs where 14.5V clamping is acceptable. |
Compared with UCLAMP5501ZVTFT, UCLAMP3301ZVTFT offers tighter voltage matching for 3.3V systems but cannot protect 5.5V rails, while SMAJ5.0A provides legacy surge robustness in larger packages but lacks the low clamping and compact DFN-6 form factor needed for modern USB-C designs.
Availability
UCLAMP5501ZVTFT is available at Aetrix Electronics and suitable for USB Type-C PD implementations, industrial load switch inputs, and IoT sensor node power rails requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for UCLAMP5501ZVTFT 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.
The UCLAMP series targets high-reliability transient suppression in next-generation USB, industrial, and battery-powered systems, emphasizing stable clamping, ultra-low dynamic resistance, and miniature DFN packaging.
FAQ
What is the maximum peak pulse current rating for UCLAMP5501ZVTFT?
The UCLAMP5501ZVTFT is rated for 24 A peak pulse current (tp = 8/20 μs) per IEC 61000-4-5. This rating assumes all six pins are properly connected - pins 1–3 to a low-inductance ground plane and pins 4–6 to the protected line - and is validated across the full operating temperature range (–40°C to +125°C). The device maintains 6.8 V clamping at this current level.
Does UCLAMP5501ZVTFT support USB 3.1 or USB 3.2 SuperSpeed data lines?
No, UCLAMP5501ZVTFT is not suitable for USB 3.1/3.2 SuperSpeed differential pairs due to its 175 pF junction capacitance at 5.5 V, which would severely degrade signal integrity above 480 Mbps. It is intended for 5.5V power rails (VBUS, CC, SBU) and low-speed control lines. For SuperSpeed lanes, Semtech recommends RClamp3371ZC (0.25 pF) instead of UCLAMP5501ZVTFT.
How does UCLAMP5501ZVTFT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), UCLAMP5501ZVTFT uses a triggered FET architecture that maintains ~6.8 V clamping from 1 A to 24 A. Its dynamic resistance drops to 20 mΩ under surge, resulting in flat clamping across current and temperature - a key advantage over PN-junction TVS devices like SMAJ5.0A.
Can UCLAMP5501ZVTFT be used to protect a 12V automotive circuit?
No, UCLAMP5501ZVTFT has a 5.5V working voltage (VRWM) and 6.8V clamping voltage, making it incompatible with 12V automotive supply rails. Applying 12V continuously would exceed its reverse standoff rating and cause excessive leakage or failure. For 12V systems, Semtech's UCLAMP1201ZVTFT (12V VRWM, 15.5V clamping) is the appropriate variant - not UCLAMP5501ZVTFT.
Is the thermal pad on the underside of the UCLAMP5501ZVTFT DFN-6 package electrically connected?
No, the exposed pad on the bottom of the UCLAMP5501ZVTFT DFN-6 package is not electrically active. Thermal performance relies on conduction through pins 1–3 (GND) and pins 4–6 (IN) to adjacent copper planes. No solder connection to the pad is required, and no thermal vias beneath the pad are needed - unlike power MOSFETs or regulators. This simplifies layout versus thermally demanding ICs.
UCLAMP5501ZVTFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 0402 (1006 Metric)
- Series:
- µClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5.5V
- Voltage - Breakdown (Min):
- 5.8V
- Voltage - Clamping (Max) @ Ipp:
- 10V
- Current - Peak Pulse (10/1000µs):
- 60A (8/20µs)
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- USB
- Capacitance @ Frequency:
- 500pF @ 1MHz
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 2-DFN (1x0.6)
UCLAMP5501ZVTFT FAQ
1.How can I place an order for UCLAMP5501ZVTFT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP5501ZVTFT 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 UCLAMP5501ZVTFT reliable?
The price and inventory of UCLAMP5501ZVTFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP5501ZVTFT is usually 5 days.
3.What payment methods are accepted for UCLAMP5501ZVTFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP5501ZVTFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP5501ZVTFT?
UCLAMP5501ZVTFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP5501ZVTFT 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 UCLAMP5501ZVTFT?
For technical support, including UCLAMP5501ZVTFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP5501ZVTFT requirements.
6.How does Aetrix verify that UCLAMP5501ZVTFT is sourced from the original manufacturer or authorized distributors?
All UCLAMP5501ZVTFT 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 UCLAMP5501ZVTFT meets industry standards.
7.What is the process for return or replacement of UCLAMP5501ZVTFT?
All UCLAMP5501ZVTFT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP5501ZVTFT, 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 UCLAMP5501ZVTFT part is unused and in its original packaging.
Return procedure for UCLAMP5501ZVTFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP5501ZVTFT Tags
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