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Semtech Corporation SC3102EULTRT
- Part No.:
- SC3102EULTRT
- Manufacturer:
- Semtech Corporation
- Package:
- 16-UFQFN Exposed Pad
- Datasheet:
-
SC3102EULTRT.pdf
- Description:
- IC REG BUCK 1.2V 2A 16MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:4,540
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Product details
Overview
SC3102EULTRT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.5–28V clamping voltage at 40A, and 20mΩ dynamic resistance. It protects USB PD and Type-C VBUS lines in industrial and portable electronics.
For engineers reviewing the SC3102EULTRT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and real-world use cases in load switch input protection and USB interface surge hardening.
Technical Context
The SC3102EULTRT 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 across 24–40A (8/20μs) due to decreasing RDS(on) under surge conditions.
It operates from –40°C to +125°C with stable 27.5–28V clamping up to 125°C, 175pF junction capacitance at 22V/1MHz, and <600nA reverse leakage at VRWM. Its functional architecture enables low-voltage overshoot suppression where traditional TVS devices exhibit rising VC with temperature and current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or degradation |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below damage threshold during worst-case surges |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds standard system-level ESD test requirements for end-equipment certification |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for VBUS line protection without signal integrity impact on DC-coupled power rails |
| Operating Temperature | –40°C to +125°C - supports deployment in automotive cabin, industrial control, and outdoor IoT environments |
Pinout & Package
SC3102EULTRT is housed in a RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon). All six pins must be connected per function for full 40A surge rating.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be tied to low-inductance ground plane via multiple vias |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS); all three pins connect in parallel to minimize trace inductance and maximize current sharing |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping over current range | 27.5–28V from 24A to 40A (8/20μs) - eliminates need for derating at high IPP or elevated ambient temperatures |
| Temperature-stable clamping | No increase in VC from –40°C to +125°C - enables reliable protection in thermally aggressive enclosures without margin loss |
| FET-based shunt architecture | 20mΩ RDYN - delivers lower overshoot than TVS diodes (VC = VBR + IPP × RDYN) whose RDYN is fixed and higher |
| Low leakage at VRWM | <600nA at 22V - prevents measurable power loss or bias shift in always-on power rail monitoring circuits |
| Small-footprint DFN-6 | 1.6mm × 1.6mm area - saves >50% board space vs. SO-8 or SOT-23 TVS solutions rated for equivalent surge energy |
Applications
| USB Type-C VBUS Protection | Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V USB PD power delivery lines against lightning-induced surges and connector hot-plug ESD events. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed between Type-C receptacle and upstream load switch or PD controller. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - keeps PD controller gate oxide stress within safe limits where TVS diodes exceed 35V. |
Use Scenario: Shielding industrial-grade load switches (e.g., HS2950P) from EOS on input rails in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient diverter that routes surge energy away from the load switch's internal FET drain-source junction. Use Value: Prevents latch-up or permanent gate oxide damage by limiting VDS overshoot to ≤28V during 1.2/50μs combination wave surges. |
| Industrial IoT Power Rails | Notebook/Tablet VBUS Lines |
|
Use Scenario: Hardening 22V auxiliary power inputs in battery-powered edge sensors exposed to EFT and conducted surges. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV networks for compact, high-reliability field-deployed nodes. Use Value: Delivers ±4kV EFT immunity (IEC 61000-4-4) and 40A surge handling in 2.56mm² footprint - reduces BOM count and PCB layer count. |
Use Scenario: Securing main VBUS supply in ultraportable notebooks and tablets where thermal and space constraints limit protection options. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (≤600nA) protector enabling direct integration without compromising standby current or thermal budget. Use Value: Enables compliance with IEC 61000-4-2 Level 4 (±30kV contact) while maintaining <1μA total system quiescent current in sleep mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same die, identical electrical specs and package - direct manufacturer cross-reference; SC3102EULTRT is Semtech's alternate marking for TDS2211P per official ordering documentation | Identical use in USB PD, load switch, and industrial VBUS protection | Select SC3102EULTRT for tape-and-reel logistics aligned with Semtech's EULTRT packaging standard (3,000 pcs/reel, 7″) |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 24.7A, 1.5Ω RDYN - clamping rises linearly with current and temperature | Requires higher derating margin in high-temp designs; unsuitable for 40A surge or 125°C operation | Choose only if cost sensitivity outweighs clamping stability and thermal robustness requirements |
Compared with TDS2211P and SMAJ22A, SC3102EULTRT offers identical performance to TDS2211P in a logistics-optimized reel format, while delivering superior thermal-current clamping stability versus SMAJ22A - critical for USB PD systems operating near thermal limits.
Availability
SC3102EULTRT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial IoT power rails, and notebook/tablet VBUS protection requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for SC3102EULTRT 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.
SC3102EULTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–24V power rail protection where stable clamping across temperature and current is mandatory.
FAQ
What is the exact package type and dimensions of SC3102EULTRT?
SC3102EULTRT uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with no exposed thermal pad. Pin 1 is marked by a laser dot; pins 1–3 are GND, and pins 4–6 are IN. The land pattern follows Semtech's recommended 1.55–1.65mm E dimension and 0.30–0.40mm pad width per official outline drawing.
How does SC3102EULTRT 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), SC3102EULTRT maintains 27.5–28V clamping from 24A to 40A due to its FET-based shunt architecture and sub-20mΩ dynamic resistance. This eliminates thermal derating and ensures consistent protection at 125°C.
Is SC3102EULTRT suitable for protecting USB PD 3.0 VBUS lines?
Yes - SC3102EULTRT is explicitly validated for USB Type-C VBUS protection in Semtech's application notes. With 22V working voltage, ±30kV ESD rating, and 27.5–28V clamping at 40A, it safeguards PD controllers against both contact ESD and IEC 61000-4-5 surges without exceeding their absolute maximum ratings.
What is the maximum junction temperature and storage temperature range for SC3102EULTRT?
SC3102EULTRT has a junction and storage temperature range of –55°C to +150°C, with continuous operation rated from –40°C to +125°C. Its clamping voltage remains stable across this full operating range, making it suitable for under-hood automotive modules and industrial control cabinets.
Does SC3102EULTRT require a thermal pad or heatsink on the PCB?
No - SC3102EULTRT dissipates surge energy in the silicon FET rather than at a PN junction, and Semtech's datasheet confirms no thermal pad is needed. Layout best practice emphasizes low-inductance grounding via multiple vias to pins 1–3 and short, wide traces to pins 4–6 - not copper pour or thermal relief.
SC3102EULTRT 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):
- 1.2V
- 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)
SC3102EULTRT FAQ
1.How can I place an order for SC3102EULTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC3102EULTRT 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 SC3102EULTRT reliable?
The price and inventory of SC3102EULTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC3102EULTRT is usually 5 days.
3.What payment methods are accepted for SC3102EULTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC3102EULTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC3102EULTRT?
SC3102EULTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC3102EULTRT 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 SC3102EULTRT?
For technical support, including SC3102EULTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC3102EULTRT requirements.
6.How does Aetrix verify that SC3102EULTRT is sourced from the original manufacturer or authorized distributors?
All SC3102EULTRT 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 SC3102EULTRT meets industry standards.
7.What is the process for return or replacement of SC3102EULTRT?
All SC3102EULTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC3102EULTRT, 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 SC3102EULTRT part is unused and in its original packaging.
Return procedure for SC3102EULTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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