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Semtech Corporation SC3102HULTRT
- Part No.:
- SC3102HULTRT
- Manufacturer:
- Semtech Corporation
- Package:
- 16-UFQFN Exposed Pad
- Datasheet:
-
SC3102HULTRT.pdf
- Description:
- IC REG BUCK 1.5V 2A 16MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:1,665
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Product details
Overview
SC3102HULTRT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range. Used in USB Type-C PD input protection to safeguard controllers from voltage overshoot.
For engineers reviewing the SC3102HULTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, DFN-6 thermal performance at +125°C, low 20mΩ dynamic resistance, and compatibility with industrial load switch input protection layouts.
Technical Context
The SC3102HULTRT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge, not fixed dynamic resistance.
It operates across –40°C to +125°C with <600nA reverse leakage at 22V and 175pF junction capacitance at 1MHz/22V. The device requires all three input pins (4–6) and all three ground pins (1–3) connected to achieve rated 40A surge capability and minimize parasitic inductance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches USB PD bus nominal voltage and withstand rating |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - stays below 30V damage threshold of most 24V-rated PD controllers |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge requirement |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds USB IF ESD robustness requirements |
| Dynamic Resistance | 20mΩ - enables low-voltage-drop shunting without thermal runaway during multi-pulse events |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for DC power rail and low-speed signal line protection, not high-speed data lanes |
Pinout & Package
SC3102HULTRT is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal slug). All six terminals are surface-mount; pin 1 is marked by laser dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path - all three must be soldered to maximize surge current handling and minimize ground loop inductance |
| 4, 5, 6 | IN | Protected line input - parallel connection of all three pins reduces trace impedance and distributes surge current evenly across internal FET structure |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A surge - eliminates need for derating at high ambient temperatures |
| FET-based shunt topology | Surge energy dissipated in low-RDS(on) channel instead of PN junction - improves reliability vs. TVS under repeated transients |
| Low dynamic resistance | 20mΩ measured between 1A–40A - ensures minimal voltage rise during fast-rising surges (e.g., EFT bursts) |
| Wide temp operation | Functional from –40°C to +125°C with stable clamping - validated for industrial and automotive under-hood environments |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS line of USB Type-C receptacles supporting up to 20V/5A PD negotiation. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed directly at connector, clamping transients before reaching PD controller and load switch. Use Value: Maintains 28V clamping at full 40A surge and +125°C - prevents latch-up or gate oxide damage in downstream 24V-rated controllers like STUSB4500 or TUSB7320. |
Use Scenario: Safeguarding input of industrial-grade load switches (e.g., ON Semiconductor NIS5132, TI TPS25940) in remote meters and PLC I/O modules. IC Role / Device Role / Timing Role: Front-end transient limiter that limits voltage seen by load switch FET drain, preventing avalanche failure during lightning-induced surges. Use Value: Enables use of smaller, lower-cost load switches by holding clamp voltage below their absolute maximum drain-source rating (typically 30–36V). |
| IoT Edge Node Power Rail Protection | Notebook/Tablet Main Power Bus Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-powered IoT gateways exposed to ESD during field servicing or connector mating. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV networks - handles both fast ESD and slower surge events. Use Value: 1.6mm × 1.6mm footprint saves >60% board area vs. discrete TVS+series resistor solutions while maintaining 4kV EFT immunity. |
Use Scenario: Protecting 20V system rails in ultrabooks and 2-in-1 tablets where space and thermal constraints limit protection component count. IC Role / Device Role / Timing Role: Standalone clamping device on main DC-DC converter input, placed adjacent to barrel jack or USB-C port. Use Value: Stable 27.5V clamping at –40°C ensures reliable protection during cold-start conditions where traditional TVS clamping rises above safe margins. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P.C | Identical electrical specs and DFN-6 package; differs only in tape-and-reel packaging (3,000 pcs/reel vs. SC3102HULTRT's unspecified reel quantity) | No functional difference - same pinout, thermal profile, and surge rating | Select TDS2211P.C when standard Semtech reel quantity and marking (T22 + date code) are required for automated assembly traceability |
| uClamp2411ZA.TCT | 24V working voltage, ±30kV ESD, but lower 20A IPP and higher 33V clamping at 20A - uses silicon avalanche diode, not FET-based clamping | Better suited for CC/SBU lines in USB-C; insufficient for 40A VBUS protection | Choose uClamp2411ZA.TCT only for secondary protection on low-current control lines - not a direct replacement for SC3102HULTRT on power rails |
Compared with TDS2211P.C, SC3102HULTRT offers identical protection performance but may differ in reel logistics and date-code marking; versus uClamp2411ZA.TCT, SC3102HULTRT provides 2× higher surge current rating and 5V lower clamping - making it the only viable option for primary 22V bus protection in high-reliability systems.
Availability
SC3102HULTRT is available at Aetrix Electronics and suitable for USB Type-C PD designs, industrial load switch inputs, and IoT edge node power rails requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for SC3102HULTRT 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 SC3102HULTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications where clamping voltage stability across temperature and current is critical.
FAQ
What is the exact package type and dimensions of SC3102HULTRT?
SC3102HULTRT uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed pad. Pin pitch is 0.5mm, and pin 1 is marked by a laser dot. The package is Pb-free, halogen-free, and RoHS/WEEE compliant with UL 94V-0 molding compound.
Does SC3102HULTRT require external bias or control signals to operate?
No, SC3102HULTRT is fully passive and self-triggering. It contains an integrated precision trigger circuit and surge-rated FET - no external power, enable pin, or configuration is needed. It activates automatically when transient voltage exceeds its breakdown threshold (~27V).
Can SC3102HULTRT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, SC3102HULTRT is not suitable for high-speed data lines. Its 175pF junction capacitance would severely degrade signal integrity on >100MHz interfaces. It is intended exclusively for DC power rails and low-speed control lines (e.g., USB-C VBUS, CC, SBU, or load switch enable inputs).
How does SC3102HULTRT's clamping behavior compare to standard TVS diodes under temperature variation?
SC3102HULTRT maintains 27.5–28V clamping from –40°C to +125°C at 40A, whereas standard TVS diodes exhibit rising clamping voltage with temperature due to increased dynamic resistance. This stability eliminates thermal derating calculations required for TVS-based designs.
Is SC3102HULTRT compatible with lead-free reflow profiles?
Yes, SC3102HULTRT is qualified for standard JEDEC J-STD-020 lead-free reflow profiles, including peak temperatures up to 260°C. Its DFN package and lead-free finish support compatibility with automated SMT assembly processes used in high-volume manufacturing.
SC3102HULTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 16-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-MLPQ-UT (3x3)
SC3102HULTRT FAQ
1.How can I place an order for SC3102HULTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC3102HULTRT 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 SC3102HULTRT reliable?
The price and inventory of SC3102HULTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC3102HULTRT is usually 5 days.
3.What payment methods are accepted for SC3102HULTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC3102HULTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC3102HULTRT?
SC3102HULTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC3102HULTRT 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 SC3102HULTRT?
For technical support, including SC3102HULTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC3102HULTRT requirements.
6.How does Aetrix verify that SC3102HULTRT is sourced from the original manufacturer or authorized distributors?
All SC3102HULTRT 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 SC3102HULTRT meets industry standards.
7.What is the process for return or replacement of SC3102HULTRT?
All SC3102HULTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC3102HULTRT, 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 SC3102HULTRT part is unused and in its original packaging.
Return procedure for SC3102HULTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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