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Semtech Corporation SC4501MSETRT
- Part No.:
- SC4501MSETRT
- Manufacturer:
- Semtech Corporation
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Datasheet:
-
SC4501MSETRT.pdf
- Description:
- IC REG BST FLYBACK ADJ 2A 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,396
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Product details
Overview
SC4501MSETRT 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 SC4501MSETRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under 40A surge, DFN-6 thermal and layout performance, 175pF junction capacitance at 22V, and compatibility with industrial and portable power delivery systems requiring robust EOS resilience.
Technical Context
The SC4501MSETRT 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-27.5–28V-from 24A to 40A and across –40°C to +125°C due to ultra-low dynamic resistance (20mΩ).
It operates with reverse stand-off voltage (VRWM) of 22V and breakdown voltage (VBR) of 25–27.9V, supporting unsymmetrical line protection per IEC 61000-4-5. Its solid-state architecture dissipates energy via the FET channel rather than the junction, enabling superior thermal stability and higher surge endurance than standard TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V VRWM - defines maximum continuous bus voltage before activation; matches USB PD 20V nominal + margin. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs see <28V during worst-case surge, critical for 30V-tolerant controllers. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements with 2Ω source impedance. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 ESD immunity for handheld and connector-facing applications. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact on DC/low-frequency paths. |
| Dynamic Resistance | 20mΩ (8/20μs) - enables flat clamping curve; reduces voltage rise under increasing current, unlike TVS diodes. |
| Operating Temp | –40°C to +125°C - supports industrial and automotive-adjacent environments where ambient heat affects protection reliability. |
Pinout & Package
SC4501MSETRT is housed in a RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad not required. All six terminals are electrically active: three parallel ground inputs and three parallel input terminals for optimal surge current sharing and low-inductance PCB routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize inductance and maximize 40A capability. |
| 4, 5, 6 | IN | Parallel-connected input terminals tied to protected bus (e.g., VBus in USB-C); enables distributed current handling and reduced trace inductance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Clamping Architecture | Clamping voltage stays within 27.5–28V from 24A to 40A and –40°C to +125°C-enables predictable protection without derating. |
| FET-Based Surge Conduction | Shunts transients through low-RDS(on) FET instead of PN junction-reduces thermal stress and improves longevity vs. TVS diodes. |
| High-Energy EOS Rating | 1120W peak pulse power (8/20μs) supports repeated industrial surges without degradation or parameter shift. |
| Low-Leakage Protection | 600nA max reverse leakage at 22V-minimizes standby power loss in always-on battery-powered IoT and metering systems. |
| Compact DFN Layout | 1.6×1.6mm footprint saves >50% board area vs. SO-8 or SOT-23 alternatives-critical for space-constrained USB-C and load switch designs. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBus lines in USB-C receptacles supporting up to 20V/5A PD, exposed to ESD and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt device placed at connector entry point; clamps transients before reaching PD controller and load switch. Use Value: Maintains 27.5–28V clamping at full 40A surge-prevents overvoltage damage to 30V-rated controllers while eliminating temperature-dependent clamping drift. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Front-end transient suppressor that limits voltage seen by internal FET gate oxide and sense circuitry during line surges. Use Value: Keeps clamping below 28V across –40°C to +125°C-ensures reliable operation in uncontrolled thermal environments where TVS clamping would exceed safe thresholds. |
| IoT Device Power Rail Protection | Notebook/Tablet DC Input Protection |
Use Scenario: Securing 12–22V DC input rails in battery-backed smart sensors and edge nodes deployed in field installations. IC Role / Device Role / Timing Role: Solid-state transient diverter placed between connector and PMIC input, absorbing multi-kV EFT and ESD events. Use Value: 175pF capacitance avoids filtering or bandwidth issues on DC rails; ±30kV ESD rating ensures survivability during handling and deployment. |
Use Scenario: Protecting 20V-class adapter input circuits in ultrabooks and tablets subject to accidental AC line transients and connector hot-plug events. IC Role / Device Role / Timing Role: High-energy clamp on main DC input path, coordinated with downstream TVS for data lines (e.g., RClamp3371ZC). Use Value: 40A surge rating and stable clamping enable single-device compliance with IEC 61000-4-5 Level 4-reducing BOM count vs. cascaded TVS solutions. |
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, same DFN-6 package, identical marking (T22), and shared Semtech datasheet-functionally identical part number variant. | No functional difference; used interchangeably in USB-C and industrial designs per Semtech ordering documentation. | Select TDS2211P.C when sourcing from authorized distributors with full traceability; SC4501MSETRT is the tape-and-reel qualified version for production use. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A (8/20μs), 1000W PPPK; no constant-clamp architecture or FET-based conduction. | Higher clamping voltage (35.5V vs. 28V) and strong temperature dependence limit use in 30V-tolerant systems at elevated ambient temps. | Choose SMAJ22A only for cost-sensitive, non-critical 22V rails where 7V higher clamping and 20A lower surge rating are acceptable. |
Compared with TDS2211P.C (identical function) and SMAJ22A (conventional TVS), SC4501MSETRT offers superior clamping stability, 40A surge headroom, and thermal resilience-making it the preferred choice for USB PD, industrial load switches, and thermally demanding IoT endpoints where protection predictability is mandatory.
Availability
SC4501MSETRT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT device DC power rails requiring stable component supply with guaranteed long-term availability and full RoHS/WEEE compliance.
Supply support for SC4501MSETRT 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 semiconductors for power management, protection, sensing, and connectivity.
SC4501MSETRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line-engineered specifically to replace conventional TVS diodes in high-reliability 22V power and interface protection applications demanding flat clamping and thermal stability.
FAQ
What is the primary protection function of SC4501MSETRT?
SC4501MSETRT functions as a transient diverting suppressor that shunts high-energy electrical overstress (EOS) events-including ESD, EFT, and surge-to ground using a precision-triggered FET. Unlike TVS diodes, SC4501MSETRT maintains a near-constant 27.5–28V clamping voltage across its full 40A surge rating and operating temperature range, ensuring predictable protection for 22V-rated systems.
How does SC4501MSETRT differ from standard TVS diodes like SMAJ22A?
SC4501MSETRT uses a surge-rated FET and trigger circuit to achieve flat clamping (27.5–28V at 40A), whereas SMAJ22A-a conventional TVS-clamps at 35.5V at only 12.3A and exhibits rising clamping with temperature and current. SC4501MSETRT also offers ±30kV ESD rating and 20mΩ dynamic resistance, making it suitable for demanding USB PD and industrial applications where SMAJ22A falls short.
What is the correct PCB layout practice for SC4501MSETRT?
For optimal performance, place SC4501MSETRT as close as possible to the protected connector. Connect all three IN pins (4, 5, 6) via a single low-inductance trace to the protected line, and tie all three GND pins (1, 2, 3) directly to a solid ground plane using multiple vias. Avoid thermal pads-energy is dissipated in the FET channel, not the junction, so no thermal pad is required or recommended.
Is SC4501MSETRT compatible with USB Type-C Power Delivery designs?
Yes-SC4501MSETRT is explicitly validated for USB Type-C PD input protection in Semtech's reference designs. With 22V VRWM, 28V clamping, and ±30kV ESD rating, it safeguards PD controllers and load switches on VBus lines operating up to 20V. Its low 175pF capacitance avoids interference with PD communication, and its DFN-6 footprint integrates seamlessly into compact Type-C port layouts.
What are the absolute maximum ratings for SC4501MSETRT?
SC4501MSETRT has an absolute maximum peak pulse power of 1120W (8/20μs), peak pulse current of 40A (8/20μs), operating temperature range of –40°C to +125°C, and junction/storage temperature limits of –55°C to +150°C. Reverse stand-off voltage is rated at 22V, and ESD withstand is ±30kV per IEC 61000-4-2. Exceeding any of these values may cause permanent device failure.
SC4501MSETRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost, Flyback, SEPIC
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.4V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 1.4V
- Voltage - Output (Max):
- 32V
- Current - Output:
- 2A (Switch)
- Frequency - Switching:
- 1.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP-EP
SC4501MSETRT FAQ
1.How can I place an order for SC4501MSETRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC4501MSETRT 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 SC4501MSETRT reliable?
The price and inventory of SC4501MSETRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC4501MSETRT is usually 5 days.
3.What payment methods are accepted for SC4501MSETRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC4501MSETRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC4501MSETRT?
SC4501MSETRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC4501MSETRT 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 SC4501MSETRT?
For technical support, including SC4501MSETRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC4501MSETRT requirements.
6.How does Aetrix verify that SC4501MSETRT is sourced from the original manufacturer or authorized distributors?
All SC4501MSETRT 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 SC4501MSETRT meets industry standards.
7.What is the process for return or replacement of SC4501MSETRT?
All SC4501MSETRT units undergo pre-shipment inspection (PSI). If there is an issue with SC4501MSETRT, 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 SC4501MSETRT part is unused and in its original packaging.
Return procedure for SC4501MSETRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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