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Semtech Corporation UCLAMP0524P.TCT
- Part No.:
- UCLAMP0524P.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
UCLAMP0524P.TCT.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SLP2116P8
- Quantity:
- Payment:
- Shipping:
Inventory:7,736
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Product details
Overview
UCLAMP0524P.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 24V-rated I/O or power lines in USB Type-C, industrial, and IoT systems. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and a tightly regulated 28V clamping voltage across temperature and current range.
For engineers reviewing the UCLAMP0524P.TCT datasheet, pinout, applications, or equivalent options, this device offers superior clamping stability versus conventional TVS diodes-critical for protecting USB PD controllers, load switches, and 24V industrial interfaces where voltage margin is constrained.
Technical Context
The UCLAMP0524P.TCT employs 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. Unlike standard TVS diodes, its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A peak pulse current due to ultra-low dynamic resistance (20mΩ).
It operates over –40°C to +125°C with stable reverse stand-off voltage (24V), breakdown voltage (27.9V typ), and junction capacitance (175pF at 22V). Its DFN 1.6×1.6×0.55mm package integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) to maximize surge current handling and minimize parasitic inductance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24V - defines maximum continuous DC bus voltage it can protect without leakage or degradation |
| Clamping Voltage | 28V at 40A (8/20μs) - ensures protected ICs see ≤28V during worst-case surge, preserving 30V-tolerant interface margins |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - meets highest system-level ESD immunity requirements for consumer and industrial ports |
| Peak Pulse Current | 40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 surge testing on 24V lines |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 24V power rail protection without signal integrity impact on adjacent traces |
| Dynamic Resistance | 20mΩ - enables flat clamping curve; critical for maintaining consistent protection across temperature and current extremes |
Pinout & Package
UCLAMP0524P.TCT is housed in a Pb-free, RoHS-compliant DFN 1.6mm × 1.6mm × 0.55mm 6-lead package with UL 94V-0 molding compound. The compact footprint saves board space versus discrete TVS arrays while enabling high-current routing via parallel pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to PCB ground plane via multiple vias for full 40A surge capability |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., VBUS or 24V rail); connection of all three maximizes current sharing and thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables near-constant clamping voltage (27.5–28V) across 24–40A and –40°C to +125°C - eliminates thermal derating uncertainty |
| Ultra-low dynamic resistance | 20mΩ measured between 1A–40A (8/20μs) - minimizes voltage rise under surge, improving margin for downstream 30V-rated ICs |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - sustains repeated 40A transients without parametric shift or failure |
| Low leakage & stable capacitance | 600nA max reverse leakage at 24V; 175pF capacitance stable vs. temperature and bias - avoids loading on 24V supply rails |
Applications
| USB Type-C Power Delivery Protection | Industrial 24V I/O Line Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 24V PD profiles against lightning-induced surges and connector ESD. IC Role / Device Role / Timing Role: Transient diverting suppressor placed at connector entry point to clamp surges before reaching PD controller and load switch. Use Value: Maintains 28V clamping at 40A and 125°C - prevents damage to 30V-tolerant PD controllers where traditional TVS would exceed safe voltage margin. |
Use Scenario: Safeguarding 24V sensor inputs, PLC analog outputs, or motor drive enable lines exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary front-end surge protector on 24V power or signal lines interfacing with external connectors or cables. Use Value: Delivers 40A (8/20μs) surge handling with <28V clamping - meets IEC 61000-4-5 Level 4 without derating at elevated ambient temperatures. |
| Load Switch Input Protection | IoT Gateway DC Power Rail Protection |
Use Scenario: Shielding the VIN pin of industrial-grade load switches (e.g., TPS229xx, MPQ6400) from EOS events in remote metering or robotics. IC Role / Device Role / Timing Role: Shunt protector placed directly at load switch input to limit voltage stress on internal MOSFET gate oxide and drain-source junction. Use Value: Clamps to 28V at full 40A - keeps stress below 30V absolute maximum ratings of common 24V-input load switches, extending reliability. |
Use Scenario: Securing the main 24V DC input rail of cellular/NB-IoT gateways deployed in outdoor or factory environments. IC Role / Device Role / Timing Role: Single-device solution for bulk 24V rail protection, replacing multi-component TVS+MOV approaches. Use Value: 175pF capacitance and 600nA leakage avoid interference with PMIC sequencing or battery management monitoring circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ24A | Standard unidirectional TVS diode; 38.9V clamping at 24A (8/20μs), higher dynamic resistance (~0.5Ω), no temperature-stable clamping | Higher clamping voltage reduces margin for 30V-rated ICs; requires derating above 85°C | Lower cost but unsuitable where tight voltage margin or wide temperature operation is required |
| TPD2E007DRYR | Low-capacitance (1.5pF) dual-channel ESD protector; rated only for 3A (8/20μs), 12V working voltage | Designed for high-speed data lines (USB 2.0, I²C), not power rail protection | Not a functional substitute - insufficient surge rating and voltage rating for 24V rail use |
Compared with SMAJ24A and TPD2E007DRYR, UCLAMP0524P.TCT uniquely combines 24V working voltage, 40A surge capability, and thermally stable 28V clamping - making it the only viable single-device solution for robust 24V industrial and USB PD power rail protection.
Availability
UCLAMP0524P.TCT is available at Aetrix Electronics and suitable for USB Type-C PD designs, industrial 24V I/O modules, and IoT gateway power supplies requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for UCLAMP0524P.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 high-performance analog and mixed-signal ICs for precision sensing, protection, and signal integrity.
The UCLAMP0524P.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered specifically to replace conventional TVS diodes in high-voltage, high-energy industrial and USB power delivery applications where clamping stability and thermal robustness are critical.
FAQ
What is the maximum continuous operating voltage for UCLAMP0524P.TCT?
The UCLAMP0524P.TCT has a reverse stand-off voltage (VRWM) of 24V, meaning it reliably blocks up to 24V DC without significant leakage. This makes it suitable for protecting 24V nominal power rails and interfaces. Operation above 24V risks premature conduction and accelerated degradation. The device's 27.9V typical breakdown voltage provides headroom before clamping activation.
How does UCLAMP0524P.TCT achieve stable clamping voltage across temperature?
UCLAMP0524P.TCT uses a precision-triggered FET shunt architecture instead of a pn-junction diode. When triggered, the FET enters a low-Rds(on) state (<20mΩ), causing clamping voltage to track the trigger circuit's reference voltage rather than rising with current or temperature. As confirmed in the datasheet, clamping remains 27.5–28V from –40°C to +125°C at 40A - unlike TVS diodes whose clamping increases with temperature.
Can UCLAMP0524P.TCT be used on high-speed data lines like USB 2.0 or PCIe?
No - UCLAMP0524P.TCT is not intended for high-speed data line protection. Its 175pF junction capacitance would severely degrade signal integrity on differential pairs operating above ~10MHz. It is optimized for 24V power rails and low-bandwidth I/O lines. For USB 2.0 or PCIe, Semtech recommends low-capacitance devices like RClamp0524P or uClamp series with <0.5pF capacitance.
What is the recommended PCB layout for UCLAMP0524P.TCT to achieve full 40A surge performance?
To achieve rated 40A (8/20μs) performance, all three IN pins (4–6) must be shorted together with a low-inductance trace to the protected line, and all three GND pins (1–3) must connect directly to a solid ground plane using ≥3 thermal vias per pin. Placement within 5mm of the connector entry point minimizes inductive coupling. Avoid stubs, right-angle traces, or narrow routing - refer to Semtech's layout guidelines in Figure 7 of the UCLAMP0524P.TCT datasheet.
Is UCLAMP0524P.TCT compliant with automotive AEC-Q200 or industrial IEC 61000-4-5 standards?
UCLAMP0524P.TCT is rated per IEC 61000-4-2 (ESD), IEC 61000-4-4 (EFT), and IEC 61000-4-5 (surge) - meeting Level 4 (±1kV line-to-ground, RS = 42Ω) for industrial equipment. It is not AEC-Q200 qualified; Semtech offers separate AEC-Q200-certified TDS variants (e.g., TDS2411P-A) for automotive use. Industrial users may rely on its –40°C to +125°C operating range and 150°C storage rating for harsh environments.
UCLAMP0524P.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):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 16A (8/20µs)
- Power - Peak Pulse:
- 240W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 160pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP2116P8
UCLAMP0524P.TCT FAQ
1.How can I place an order for UCLAMP0524P.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0524P.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 UCLAMP0524P.TCT reliable?
The price and inventory of UCLAMP0524P.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0524P.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0524P.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0524P.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0524P.TCT?
UCLAMP0524P.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0524P.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 UCLAMP0524P.TCT?
For technical support, including UCLAMP0524P.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0524P.TCT requirements.
6.How does Aetrix verify that UCLAMP0524P.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0524P.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 UCLAMP0524P.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0524P.TCT?
All UCLAMP0524P.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0524P.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 UCLAMP0524P.TCT part is unused and in its original packaging.
Return procedure for UCLAMP0524P.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP0524P.TCT Tags
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