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Semtech Corporation SC563LHULTRC
- Part No.:
- SC563LHULTRC
- Manufacturer:
- Semtech Corporation
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
SC563LHULTRC.pdf
- Description:
- IC REG LINEAR 1.8V/3.3V 8MLPD-UT
- Quantity:
- Payment:
- Shipping:
Inventory:2,484
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Product details
Overview
SC563LHULTRC 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 ultra-low 20mΩ dynamic resistance. It protects USB PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the SC563LHULTRC datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and direct alternatives for 22V bus protection design.
Technical Context
The SC563LHULTRC 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 decreasing RDS(on) under surge.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and junction capacitance of 175pF at 22V/1MHz. Its 6-pin DFN (1.6×1.6×0.55mm) integrates three parallel input terminals (pins 4–6) and three ground terminals (pins 1–3) to minimize parasitic inductance and maximize surge current handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 ESD immunity for handheld and connector-facing applications. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for VBus protection without distorting power delivery signaling (e.g., USB PD communication). |
Pinout & Package
SC563LHULTRC is housed in a Pb-free, RoHS-compliant DFN 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 soldered: pins 1–3 serve as low-inductance ground return paths, pins 4–6 form a parallel input node for optimal surge current sharing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground terminals - must be connected to solid ground plane via multiple vias to minimize inductance and sustain 40A surge current. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals - tied directly to protected line (e.g., USB PD VBus); all three required for full 40A rating and lowest clamping. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping over current range | 27.5–28V from 24A to 40A - eliminates need to overspecify IPP to meet voltage margin, simplifying system-level surge compliance. |
| Stable clamping over temperature | No increase in VC from −40°C to +125°C - enables reliable protection in uncooled industrial enclosures and automotive cabin environments. |
| Low dynamic resistance | 20mΩ - reduces IR drop during surge, maintaining tighter voltage control than TVS diodes (which exhibit rising VC with IPP). |
| High-energy EOS protection | 1120W peak pulse power - supports robust protection against lightning-induced surges and load-dump transients in 22V systems. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20–22V VBus lines in USB-C ports supporting up to 100W PD, exposed to ESD at connectors and surge coupling from adjacent circuits. IC Role / Device Role / Timing Role: Primary shunt protector placed immediately after the Type-C receptacle, clamping transients before they reach the PD controller and power switches. Use Value: Maintains 27.5–28V clamping at full 40A surge and across temperature - avoids overvoltage damage to 24V-rated PD controllers where traditional TVS would exceed 38V at 125°C. |
Use Scenario: Safeguarding input pins of high-side load switches (e.g., HS2950P) in remote meters, robotics, and IoT gateways subject to lightning-induced surges on long cables. IC Role / Device Role / Timing Role: Front-end transient suppressor placed between connector and load switch VIN, limiting voltage seen by the switch's internal FET gate oxide. Use Value: Prevents gate-oxide rupture and latch-up in load switches by holding clamping voltage well below 30V absolute maximum ratings, even under 40A 8/20μs stress. |
| IoT Device Power Rail Protection | Notebook/Tablet Main Power Input Protection |
Use Scenario: Securing 12–22V DC input rails in battery-powered edge sensors and wireless gateways deployed in electrically noisy factory or outdoor environments. IC Role / Device Role / Timing Role: Standalone EOS suppressor on main power entry point, coordinated with upstream fuses and downstream DC-DC converters. Use Value: Delivers 40A surge handling in 1.6×1.6mm footprint - saves >50% board area versus discrete TVS+MOV solutions while ensuring consistent clamping during thermal cycling. |
Use Scenario: Protecting 20V input stages of ultrabooks and 2-in-1 tablets using USB-C charging, where space constraints and thermal management limit protection component options. IC Role / Device Role / Timing Role: Compact, low-capacitance (175pF) shunt device on VBus path, co-located with E-Marker ICs and CC logic. Use Value: Enables placement within 3mm of USB-C receptacle without signal integrity impact - critical for meeting USB IF compliance and passing conducted EMI tests. |
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 - confirmed pin-to-pin and functional replacement. | Same use cases: USB PD VBus, load switch input, 22V industrial rails. | Select TDS2211P.C when sourcing from authorized Semtech distribution channels with full traceability and standard reel packaging (3,000 pcs/reel). |
| SP1003-02HTG | Lower 30A IPP rating, higher 33V clamping at 30A, 25pF lower capacitance (150pF), SOD-323 package - not pin-compatible; requires PCB redesign. | Better suited for space-constrained 12V systems or data-line protection where sub-20pF is critical; less robust for 40A industrial surges. | Choose SP1003-02HTG only if board layout allows SOD-323 placement and system surge requirement is ≤30A; verify clamping margin at max operating temperature. |
Compared with SC563LHULTRC, TDS2211P.C offers identical performance and drop-in compatibility, while SP1003-02HTG trades surge robustness for smaller size and lower capacitance - making it a functional alternative only in derated 22V applications with revised layout and thermal validation.
Availability
SC563LHULTRC is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch interfaces, and IoT device power rail protection requiring stable component supply, full traceability, and lifecycle continuity.
Supply support for SC563LHULTRC 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 signal integrity.
The SC563LHULTRC belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-voltage, high-energy EOS protection applications where stable clamping and temperature resilience are critical.
FAQ
What is the maximum continuous operating voltage for SC563LHULTRC?
The SC563LHULTRC has a reverse stand-off voltage (VRWM) of 22V, meaning it can safely block up to 22V DC or RMS voltage continuously without significant leakage or conduction. This makes SC563LHULTRC ideal for protecting 20V USB PD VBus lines and other 22V-rated power rails where sustained voltage operation is required.
Does SC563LHULTRC require a thermal pad on the PCB?
No, SC563LHULTRC does not require an external thermal pad. Its DFN-6 package dissipates surge energy internally through the silicon FET structure, and the datasheet explicitly states "no thermal pad is needed." Instead, low-inductance grounding via multiple vias under pins 1–3 is essential to maintain 40A surge capability and stable clamping performance for SC563LHULTRC.
How does SC563LHULTRC 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) - SC563LHULTRC maintains a nearly constant 27.5–28V clamping voltage from 24A to 40A and across −40°C to +125°C. This is achieved via a triggered FET shunt with decreasing RDS(on), making SC563LHULTRC far more predictable in real-world surge conditions.
Can SC563LHULTRC protect USB SuperSpeed data lines?
No, SC563LHULTRC is not intended for USB SuperSpeed (TX/RX) data line protection. Its 175pF junction capacitance is optimized for VBus power line protection, not high-speed signaling. For SuperSpeed lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF); SC563LHULTRC should be used exclusively on the 22V power path, not data lanes.
Is SC563LHULTRC compatible with lead-free reflow processes?
Yes, SC563LHULTRC is fully compatible with standard lead-free reflow profiles. It features lead-free terminal finish and complies with RoHS/WEEE directives. The DFN-6 package is rated for peak reflow temperatures up to 260°C per JEDEC J-STD-020, and its UL 94V-0 molding compound ensures reliability under repeated thermal cycling - critical for high-yield manufacturing of SC563LHULTRC-equipped boards.
SC563LHULTRC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 8-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V, 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.49V @ 300mA, 0.49V @ 300mA
- Current - Output:
- 300mA, 300mA
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- -
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLPD-UT (1.6x1.2)
SC563LHULTRC FAQ
1.How can I place an order for SC563LHULTRC through Aetrix?
Please submit a Request for Quotation (RFQ) for SC563LHULTRC 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 SC563LHULTRC reliable?
The price and inventory of SC563LHULTRC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC563LHULTRC is usually 5 days.
3.What payment methods are accepted for SC563LHULTRC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC563LHULTRC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC563LHULTRC?
SC563LHULTRC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC563LHULTRC 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 SC563LHULTRC?
For technical support, including SC563LHULTRC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC563LHULTRC requirements.
6.How does Aetrix verify that SC563LHULTRC is sourced from the original manufacturer or authorized distributors?
All SC563LHULTRC 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 SC563LHULTRC meets industry standards.
7.What is the process for return or replacement of SC563LHULTRC?
All SC563LHULTRC units undergo pre-shipment inspection (PSI). If there is an issue with SC563LHULTRC, 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 SC563LHULTRC part is unused and in its original packaging.
Return procedure for SC563LHULTRC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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