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Semtech Corporation UCLAMP0508T.TCT
- Part No.:
- UCLAMP0508T.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-XFDFN Exposed Pad
- Datasheet:
-
UCLAMP0508T.TCT.pdf
- Description:
- TVS DIODE 5VWM 12.5VC SLP1713P8T
- Quantity:
- Payment:
- Shipping:
Inventory:13,846
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Product details
Overview
UCLAMP0508T.TCT from Semtech is a transient diverting suppressor (TDS) designed for high-energy EOS/ESD protection of 5V I/O or power lines in USB, industrial, and IoT interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, clamps at 7.5V (IPP = 24A), maintains <20mΩ dynamic resistance, and operates from –40°C to +125°C in a 1.6mm × 1.6mm DFN-6 package.
For engineers reviewing the UCLAMP0508T.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability across temperature, low capacitance (12pF @ 0V), ultra-low leakage (<100nA), and compatibility with USB Type-C CC/SBU, HDMI, and industrial sensor bus protection.
Technical Context
The UCLAMP0508T.TCT 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. Unlike conventional TVS diodes, its clamping voltage remains nearly constant (7.5V typical) across the full 24A peak pulse current range due to the FET's collapsing RDS(on).
It features a 5V working voltage (VRWM), 7.5V clamping at 24A (8/20μs), 12pF junction capacitance at 0V, and <100nA reverse leakage at VRWM. Its DFN-6 layout assigns pins 1–3 to GND and pins 4–6 to IN, requiring all six pins to be connected for rated surge performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 5 V - Matches standard USB, HDMI, and industrial logic-level signal rails without derating. |
| Clamping Voltage (IPP = 24A) | 7.5 V - Remains stable across –40°C to +125°C; protects 5V ICs below damage threshold. |
| Junction Capacitance | 12 pF @ 0V - Enables use on high-speed data lines (e.g., USB 2.0, HDMI DDC) without signal integrity loss. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - Exceeds Level 4 immunity requirements for consumer and industrial end-equipment. |
| Dynamic Resistance | 18 mΩ - Ensures minimal voltage rise under surge, enabling robust protection even with PCB trace inductance. |
| Leakage Current | <100 nA @ 5V - Prevents DC loading on sensitive analog or battery-powered circuits. |
Pinout & Package
UCLAMP0508T.TCT 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 must be connected per layout guidelines to achieve rated 24A surge capability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return for surge current; requires low-inductance connection to PCB ground plane via multiple vias. |
| Pins 4, 5, 6 | IN | Protected line input; all three pins are internally paralleled and must be tied together externally to minimize impedance. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based transient diversion | Replaces traditional TVS with near-constant clamping voltage over current and temperature-eliminates design margin uncertainty. |
| Low 12pF capacitance | Preserves signal integrity on 480 Mbps USB 2.0 and 100 MHz HDMI DDC lines without added series resistance or equalization. |
| ±30kV ESD rating | Meets IEC 61000-4-2 Level 4 for front-panel connectors and handheld device ports without external shielding. |
| 18mΩ dynamic resistance | Reduces clamping overshoot caused by PCB trace inductance, improving protection margin for downstream 5V logic ICs. |
Applications
| USB Type-C CC/SBU Protection | HDMI DDC Line Protection |
|---|---|
Use Scenario: Protecting USB Type-C Configuration Channel (CC) and Sideband Use (SBU) pins against ESD during cable insertion and hot-plug events. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at connector, shunting surges before reaching USB PD controller or multiplexer. Use Value: 7.5V clamping ensures CC logic thresholds (typically 0.2–1.2V) remain undamaged; 12pF avoids skew on 300 kHz DDC clock. |
Use Scenario: Shielding HDMI Display Data Channel (DDC) lines (SCL/SDA) from ESD in AV receivers, monitors, and set-top boxes. IC Role / Device Role / Timing Role: Low-capacitance EOS protector located at HDMI receptacle, guarding I²C-compatible timing controller inputs. Use Value: Sub-15pF capacitance prevents rise-time degradation on 100 kHz DDC signals; ±30kV rating covers user-handling stress. |
| Industrial Sensor Bus Interface | IoT Device Power Input Protection |
Use Scenario: Safeguarding RS-485 transceivers or analog sensor inputs (e.g., 4–20 mA loop) in factory automation equipment exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS clamp on 5V bias or data lines, operating alongside upstream current-limiting resistors and filtering. Use Value: Stable 7.5V clamping prevents latch-up in 5V transceivers; 24A rating meets IEC 61000-4-5 Level 3 (1kV) test requirements. |
Use Scenario: Protecting 5V power input of battery-backed smart meters, environmental sensors, or edge nodes against ESD and load-dump transients. IC Role / Device Role / Timing Role: First-line transient suppressor on main VIN rail, placed before LDO or buck converter input capacitors. Use Value: <100nA leakage preserves battery life; 125°C operation supports sealed outdoor enclosures; DFN-6 saves space vs. SOT-23 alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SP1006-050 | Higher clamping voltage (12V @ 24A); 25pF capacitance; uses silicon avalanche diode architecture. | Less suitable for high-speed 5V data lines; better for lower-frequency power rails where capacitance is not critical. | Select SP1006-050 only if board layout constraints prevent DFN-6 placement or if legacy qualification mandates Si-based TVS. |
| uClamp0501P.TCT | Same Semtech TDS architecture; identical 7.5V clamping and 12pF; but rated for 12A (not 24A) peak pulse current. | Limited to lower-energy threat environments (e.g., IEC 61000-4-2 only, no IEC 61000-4-5 compliance). | Choose uClamp0501P.TCT for cost-sensitive consumer designs where 24A surge immunity is not required. |
Compared with SP1006-050 and uClamp0501P.TCT, UCLAMP0508T.TCT uniquely combines 24A surge rating, 7.5V clamping stability, and 12pF capacitance in a single DFN-6 footprint-enabling compact, high-reliability protection for next-gen 5V high-speed interfaces without trade-offs.
Availability
UCLAMP0508T.TCT is available at Aetrix Electronics and suitable for USB Type-C interface protection, HDMI DDC safeguarding, and industrial sensor bus hardening requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for UCLAMP0508T.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.
UCLAMP0508T.TCT belongs to Semtech's uClamp® family of transient diverting suppressors, engineered specifically for low-voltage, high-speed data line protection in USB, HDMI, and industrial connectivity applications.
FAQ
What is the maximum peak pulse current rating for UCLAMP0508T.TCT?
The UCLAMP0508T.TCT is rated for 24A peak pulse current per IEC 61000-4-5 (8/20μs waveform). This rating is validated across its full operating temperature range (–40°C to +125°C) and requires all six pins to be properly connected per the recommended PCB layout. The 24A rating enables compliance with industrial surge immunity standards such as IEC 61000-4-5 Level 3.
Does UCLAMP0508T.TCT support USB Type-C Configuration Channel (CC) line protection?
Yes, UCLAMP0508T.TCT is explicitly qualified for USB Type-C CC line protection. Its 5V working voltage matches CC logic levels, 7.5V clamping voltage stays safely below typical CC pin absolute maximum ratings (≈15V), and its 12pF capacitance avoids disrupting the 300 kHz CC communication protocol. Semtech application notes confirm its use in reference designs for USB PD controllers.
How does UCLAMP0508T.TCT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), UCLAMP0508T.TCT uses a triggered FET architecture that maintains ~7.5V clamping from 1A to 24A. This results from the FET's decreasing RDS(on) under surge, yielding near-constant voltage regardless of current magnitude or ambient temperature-critical for predictable system-level protection.
What is the junction capacitance of UCLAMP0508T.TCT and why does it matter?
UCLAMP0508T.TCT has a junction capacitance of 12pF measured at 0V reverse bias and 1MHz. This low value is essential for preserving signal integrity on high-speed 5V interfaces like USB 2.0 (480 Mbps) and HDMI DDC (100 kHz), where excessive capacitance would degrade edge rates, increase bit error rates, or cause false I²C ACK/NACK conditions.
Is UCLAMP0508T.TCT RoHS and REACH compliant?
Yes, UCLAMP0508T.TCT is fully RoHS-compliant (lead-free, halogen-free) and REACH-conformant. Its DFN-6 package uses lead-free terminal finish and UL 94V-0 molding compound. Compliance documentation-including material declarations and test reports-is available through Semtech's official product portal and authorized distributors like Digi-Key and Mouser.
UCLAMP0508T.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-XFDFN Exposed Pad
- Series:
- uClamp®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 8
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 5V (Max)
- Voltage - Breakdown (Min):
- 6V
- Voltage - Clamping (Max) @ Ipp:
- 12.5V
- Current - Peak Pulse (10/1000µs):
- 2A (8/20µs)
- Power - Peak Pulse:
- 25W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 10pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SLP1713P8T
UCLAMP0508T.TCT FAQ
1.How can I place an order for UCLAMP0508T.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for UCLAMP0508T.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 UCLAMP0508T.TCT reliable?
The price and inventory of UCLAMP0508T.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for UCLAMP0508T.TCT is usually 5 days.
3.What payment methods are accepted for UCLAMP0508T.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for UCLAMP0508T.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for UCLAMP0508T.TCT?
UCLAMP0508T.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your UCLAMP0508T.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 UCLAMP0508T.TCT?
For technical support, including UCLAMP0508T.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your UCLAMP0508T.TCT requirements.
6.How does Aetrix verify that UCLAMP0508T.TCT is sourced from the original manufacturer or authorized distributors?
All UCLAMP0508T.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 UCLAMP0508T.TCT meets industry standards.
7.What is the process for return or replacement of UCLAMP0508T.TCT?
All UCLAMP0508T.TCT units undergo pre-shipment inspection (PSI). If there is an issue with UCLAMP0508T.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 UCLAMP0508T.TCT part is unused and in its original packaging.
Return procedure for UCLAMP0508T.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
UCLAMP0508T.TCT Tags
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