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Semtech Corporation UCLAMP1311ZATFT
- Part No.:
- UCLAMP1311ZATFT
- Manufacturer:
- Semtech Corporation
- Category:
- Surge Suppression Ics
- Package:
- -
- Datasheet:
-
UCLAMP1311ZATFT.pdf
- Description:
- UCLAMP 1-LINE 13V 19PF 30KV SLP0
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
UCLAMP1311ZATFT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS protection of single 13V-rated I/O or power lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 15.5V clamping voltage at 24A - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the UCLAMP1311ZATFT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature, dynamic resistance <25 mΩ, junction capacitance ≤175 pF at 13V, and DFN-6 1.6×1.6mm package compatibility with high-density USB-C and IoT PCB layouts.
Technical Context
The UCLAMP1311ZATFT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that turns on the shunt path when transient voltage exceeds breakdown - enabling near-constant clamping voltage independent of peak pulse current magnitude. Unlike conventional TVS diodes, its clamping behavior is governed by low RDS(on) rather than fixed dynamic resistance.
It operates over −40°C to +125°C with reverse stand-off voltage of 13V, breakdown voltage of 14.5V (typ), and maintains clamping voltage within 15.5–16.0V across 24A–40A (8/20μs) and full temperature range - critical for protecting USB PD controllers and load switches where voltage margin is constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 13 V - matches nominal USB PD 12–15V bus rails without derating |
| Clamping Voltage | 15.5 V at 24A (8/20μs) - stays below 16V across full current/temperature range, safeguarding 16V-tolerant ICs |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds USB-IF and IEC 61000-4-2 Class 4 requirements |
| Junction Capacitance | 175 pF at 13 V, 1 MHz - low enough for DC power rail protection without signal integrity impact |
| Dynamic Resistance | 25 mΩ (measured 1A–40A, 8/20μs) - enables flat clamping curve and minimal voltage rise under surge |
Pinout & Package
UCLAMP1311ZATFT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad (no solder mask defined). All six terminals are surface-mount; pins 1–3 form a common ground plane, pins 4–6 serve as parallel-connected input terminals - requiring direct routing to protected line and low-inductance ground plane for optimal surge dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Ground (GND) | Common low-impedance return path for surge current; all three must be connected to maximize 40A capability |
| 4, 5, 6 | Input (IN) | Parallel-connected protected line interface; connects directly to VBus or power rail requiring 13V EOS protection |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5V from 24A to 40A (8/20μs), eliminating design margin uncertainty vs. TVS diodes |
| Low dynamic resistance | 25 mΩ ensures minimal IR drop during surge, preserving voltage headroom for downstream 16V-rated ICs |
| High-temperature stability | Clamping remains ≤16.0V from −40°C to +125°C - enables reliable operation in industrial enclosures and automotive cabins |
| Ultra-low leakage | 600 nA max at 13V - prevents measurable power loss in always-on battery-backed IoT nodes |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
Use Scenario: Protecting 12–15V VBus lines in USB-C receptacles against lightning-induced surges and ESD events during hot-plug. IC Role / Device Role / Timing Role: Transient diverting suppressor placed between connector and USB PD controller or buck converter input. Use Value: Maintains clamping at 15.5V across 40A/125°C - prevents damage to 16V-max PD controllers without oversizing TVS devices. |
Use Scenario: Shielding enable and input pins of industrial-grade load switches (e.g., HS2950P) from EOS in remote metering and robotics. IC Role / Device Role / Timing Role: Primary surge shunt located at switch VIN pin to limit transient overvoltage before internal FET gate oxide. Use Value: Prevents latch-up or gate rupture in load switches by holding clamping voltage below 16V even at full 40A surge and elevated ambient temperature. |
| IoT Edge Node Power Rail Protection | 13V Industrial Control Bus Protection |
Use Scenario: Securing 12V auxiliary power inputs in battery-powered smart sensors exposed to ESD during field servicing. IC Role / Device Role / Timing Role: Standalone EOS protector on main DC input, upstream of PMIC or LDO. Use Value: Delivers ±30kV ESD robustness with only 600 nA leakage - extends battery life while meeting IEC 61000-4-2 compliance. |
Use Scenario: Hardening 13.8V nominal control bus in PLC backplanes and motor drives against coupling-induced transients. IC Role / Device Role / Timing Role: Distributed protection device on distributed I/O module power entry points. Use Value: Sustains 40A surge handling with stable clamping, enabling single-device protection per rail instead of multi-stage TVS arrays. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCLAMP1211ZATFT | 12V working voltage, 14.5V clamping at 24A - lower voltage rating limits use to ≤12V systems | Suitable for 5V/12V dual-rail designs but insufficient for 13–15V USB PD | Select only if system operating voltage is strictly ≤12V and margin to IC abs max is >2.5V |
| TDS2211P | 22V working voltage, 27.5V clamping at 24A - higher voltage rating trades off tighter clamping margin for wider bus coverage | Used in 20V USB PD and industrial 24V rails; not suitable for 13V-sensitive controllers | Choose when protecting 18–22V buses; avoid where downstream ICs have <17V abs max rating |
Compared with UCLAMP1311ZATFT, UCLAMP1211ZATFT offers tighter voltage matching for 12V systems but lacks headroom for USB PD's 13.5V minimum, while TDS2211P supports higher bus voltages at the cost of reduced clamping margin - making UCLAMP1311ZATFT the optimal balance for 13V-class applications demanding both safety margin and surge robustness.
Availability
UCLAMP1311ZATFT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, IoT edge node power rails, and 13V control bus protection requiring stable component supply across production lifecycles.
Supply support for UCLAMP1311ZATFT 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, signal integrity, and power management.
The UCLAMP series is part of Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability power and interface protection where clamping stability, temperature independence, and low dynamic resistance are critical.
FAQ
What is the maximum continuous operating voltage for UCLAMP1311ZATFT?
The UCLAMP1311ZATFT has a reverse stand-off voltage (VRWM) of 13 V, meaning it can continuously block up to 13 V DC without significant leakage. This makes UCLAMP1311ZATFT ideal for 12V nominal systems such as USB PD 3.0 power rails and industrial 13.8V control buses where sustained voltage margin is required.
How does UCLAMP1311ZATFT 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), UCLAMP1311ZATFT uses a triggered FET architecture that maintains clamping voltage within 15.5–16.0 V from 24A to 40A (8/20μs). This flat response is confirmed in the official Semtech datasheet for UCLAMP1311ZATFT and eliminates design uncertainty caused by current-dependent voltage overshoot.
Is UCLAMP1311ZATFT compatible with automated SMT assembly processes?
Yes, UCLAMP1311ZATFT is supplied in tape-and-reel format (3,000 units/reel, 7-inch reel) and features a standard DFN-6 footprint with 0.5-mm pitch and no exposed thermal pad solder mask requirement. Its Pb-free, halogen-free construction and UL 94V-0 molding compound comply with IPC-J-STD-020 moisture sensitivity level 1 - enabling robust reflow compatibility in high-volume manufacturing of UCLAMP1311ZATFT-based assemblies.
What is the junction capacitance of UCLAMP1311ZATFT and how does it affect circuit performance?
UCLAMP1311ZATFT exhibits 175 pF typical junction capacitance at 13 V and 1 MHz, measured per the official Semtech datasheet. This value is optimized for DC power rail and low-speed signal line protection - it introduces negligible impedance at 100 kHz (<10 Ω) and avoids resonance or filtering issues in USB PD VBus monitoring paths or industrial 13V sensor supply lines where UCLAMP1311ZATFT is typically deployed.
Does UCLAMP1311ZATFT meet international surge immunity standards?
Yes, UCLAMP1311ZATFT is rated for 40A peak pulse current (8/20μs) per IEC 61000-4-5 and ±30kV ESD (contact/air) per IEC 61000-4-2 - exceeding Level 4 requirements for industrial environments. These test results are validated in the official UCLAMP1311ZATFT datasheet and confirm suitability for EN 61000-6-2 and IEC 61000-6-4 compliance in products using UCLAMP1311ZATFT as the primary front-end protector.
UCLAMP1311ZATFT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- -
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Clamping:
- -
- Technology:
- -
- Number of Circuits:
- -
- Applications:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
UCLAMP1311ZATFT FAQ
1.How can I place an order for UCLAMP1311ZATFT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP1311ZATFT 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 UCLAMP1311ZATFT reliable?
The price and inventory of UCLAMP1311ZATFT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP1311ZATFT is usually 5 days.
3.What payment methods are accepted for UCLAMP1311ZATFT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP1311ZATFT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP1311ZATFT?
UCLAMP1311ZATFT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP1311ZATFT 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 UCLAMP1311ZATFT?
For technical support, including UCLAMP1311ZATFT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP1311ZATFT requirements.
6.How does Aetrix verify that UCLAMP1311ZATFT is sourced from the original manufacturer or authorized distributors?
All UCLAMP1311ZATFT 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 UCLAMP1311ZATFT meets industry standards.
7.What is the process for return or replacement of UCLAMP1311ZATFT?
All UCLAMP1311ZATFT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP1311ZATFT, 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 UCLAMP1311ZATFT part is unused and in its original packaging.
Return procedure for UCLAMP1311ZATFT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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