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Semtech Corporation SC630ULTRT
- Part No.:
- SC630ULTRT
- Manufacturer:
- Semtech Corporation
- Package:
- 8-UFDFN Exposed Pad
- Datasheet:
-
SC630ULTRT.pdf
- Description:
- IC REG CHG PUMP 3.3V 400MA 8MLPD
- Quantity:
- Payment:
- Shipping:
Inventory:4,763
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Product details
Overview
SC630ULTRT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated I/O or power 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. It is used in USB Type-C PD input protection where low, temperature-invariant clamping prevents damage to downstream controllers.
For engineers reviewing the SC630ULTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over 40A surge current, DFN-6 package layout compatibility with high-speed interfaces, and compliance with IEC 61000-4-2/4-4/4-5 standards for industrial and portable electronics.
Technical Context
The SC630ULTRT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, it achieves near-constant clamping voltage due to the FET's decreasing RDS(on) under surge-resulting in dynamic resistance of only 20mΩ at 8/20μs.
It operates across –40°C to +125°C with reverse stand-off voltage of 22V and breakdown voltage of 25–27.9V. Its 175pF junction capacitance at 22V/1MHz and <600nA leakage ensure minimal signal distortion on protected lines while maintaining robust EFT immunity up to ±4kV (IEC 61000-4-4).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage before activation |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - ensures protected ICs remain below damage threshold during worst-case surge |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Class 4 requirements for handheld and connector-facing ports |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for USB PD VBUS line without degrading power delivery signaling integrity |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients |
| Package | DFN 1.6×1.6×0.55mm, 6-lead - supports ultra-compact PCB layouts near USB-C connectors and load switches |
Pinout & Package
SC630ULTRT is housed in a Pb-free, RoHS-compliant DFN-6 package (1.6 mm × 1.6 mm × 0.55 mm) with exposed thermal pad not required-energy dissipation occurs via conduction through GND pins. All six terminals must be connected per datasheet layout guidelines to achieve rated 40A surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be vias-connected to inner ground plane for lowest inductance |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected line (e.g., USB PD VBUS); shared connection ensures uniform current sharing and full 40A rating |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A (8/20μs), eliminating design margin inflation needed with TVS diodes |
| Temperature-stable protection | Clamping remains 27.5–28V from –40°C to +125°C-no derating required for industrial ambient conditions |
| Low dynamic resistance | 20mΩ enables sub-1V overshoot during 100A/μs dV/dt events, critical for protecting sensitive load switch FETs |
| High-energy EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz burst) - protects against repetitive switching noise in motor drives and PLCs |
| Space-optimized footprint | 1.6×1.6mm DFN saves >60% board area vs. SO-8 TVS solutions while supporting same 40A surge rating |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS line in USB-C receptacles supporting up to 20V/5A PD negotiation, exposed to ESD from hot-plug and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt device placed directly at connector, clamping transients before they reach PD controller and buck converter. Use Value: Maintains 27.5V clamping at 40A and 125°C-prevents controller latch-up or gate oxide rupture where standard TVS would exceed 38V. |
Use Scenario: Safeguarding input of high-side load switches (e.g., HS2950P) in remote meters and robotics, subjected to 1kV/42Ω surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage across load switch drain-source during surge, preventing RDS(on) degradation or avalanche failure. Use Value: 20mΩ dynamic resistance ensures <1V overshoot during fast-rising surges-keeps switch within safe operating area (SOA) without requiring oversized FETs. |
| IoT Edge Node Power Bus Protection | Notebook/Tablet VBUS Line Protection |
Use Scenario: Securing 22V-capable power rails in battery-powered IoT gateways with cellular/Wi-Fi modules, exposed to ESD and conducted surges in field deployments. IC Role / Device Role / Timing Role: Single-device solution for both ESD (±30kV) and surge (40A) on main input rail-replaces cascaded TVS+MOV designs. Use Value: 175pF capacitance avoids filtering interference on PMIC enable signals; 600nA leakage preserves battery life in always-on monitoring modes. |
Use Scenario: Protecting USB-C VBUS routing on thin-client motherboards where layout space is constrained and thermal management is limited. IC Role / Device Role / Timing Role: Compact, low-profile protector mounted adjacent to connector to minimize trace inductance and coupling to adjacent high-speed lanes. Use Value: 0.55mm height and DFN package allow placement under shield cans or beneath flex cables-enabling slim form factors without sacrificing surge rating. |
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), same tape-and-reel packaging (3,000/reel) | No functional difference; TDS2211P.C is the official Semtech orderable part number for this device | Select TDS2211P.C when sourcing directly from Semtech or authorized distributors for guaranteed traceability and lifecycle support |
| SMAJ22A | Standard unidirectional TVS diode; 22V standoff, 35.5V clamping at 12.5A (8/20μs); 100pF capacitance; DO-214AC package (4.5×2.7mm) | Larger footprint, higher clamping (≥35.5V), clamping rises with temperature and current-requires larger safety margin for PD controllers | Choose SMAJ22A only if legacy board space allows larger package and system can tolerate higher clamping voltage at elevated temperatures |
Compared with TDS2211P.C (identical device) and SMAJ22A (conventional TVS), SC630ULTRT provides superior clamping stability, smaller footprint, and lower thermal drift-making it optimal for space-constrained, high-reliability USB PD and industrial power rail protection where voltage margin is tight.
Availability
SC630ULTRT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch inputs, and IoT edge node power buses requiring stable component supply, long-term lifecycle assurance, and compliance with IEC 61000-4-2/4-4/4-5 standards.
Supply support for SC630ULTRT 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 Transient Diverting Suppressor (TDS) product line was developed to replace conventional TVS diodes in high-reliability power and interface protection-delivering flat clamping, temperature stability, and compact size for next-generation USB, industrial, and automotive electronics.
FAQ
What is the exact package type and dimensions of SC630ULTRT?
SC630ULTRT uses a DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with 0.5 mm pitch. Pins 1–3 are GND; pins 4–6 are IN. The package is Pb-free, halogen-free, and RoHS/WEEE compliant with UL 94V-0 molding compound. No thermal pad is required-the device dissipates energy through its GND and IN terminals.
Does SC630ULTRT meet IEC 61000-4-5 surge immunity requirements?
Yes, SC630ULTRT is rated for 40A peak pulse current with 8/20μs waveform per IEC 61000-4-5, and supports ±1kV combination wave (1.2/50μs voltage, 8/20μs current, RS = 42Ω) for unsymmetrical lines. This satisfies Level 4 industrial surge immunity requirements when properly laid out per Semtech's PCB guidelines.
How does SC630ULTRT's clamping voltage compare to standard TVS diodes at high temperature?
SC630ULTRT maintains 27.5–28V clamping from –40°C to +125°C at 40A, whereas standard TVS diodes like SMAJ22A exhibit rising clamping (e.g., ≥38V at 125°C). This stability eliminates thermal derating and ensures consistent protection margin for USB PD controllers across operating environments.
Can SC630ULTRT protect high-speed data lines such as USB SuperSpeed differential pairs?
No-SC630ULTRT is intended for VBUS or power-line protection only, with 175pF junction capacitance. For USB SS TX/RX lines, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25pF). SC630ULTRT should be used exclusively on the VBUS, CC, or SBU lines where capacitance tolerance is higher.
Is SC630ULTRT pin-compatible with other Semtech TDS devices like TDS2401P?
No-SC630ULTRT is functionally and physically identical to TDS2211P.C but differs from TDS2401P (24V version) in working voltage, breakdown voltage, and clamping behavior. While both use the same DFN-6 package, their pin functions match, but electrical ratings are not interchangeable without system-level validation.
SC630ULTRT 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
- Function:
- Step-Up/Step-Down
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA
- Frequency - Switching:
- 200kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLPD-UT (2x2)
SC630ULTRT FAQ
1.How can I place an order for SC630ULTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC630ULTRT 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 SC630ULTRT reliable?
The price and inventory of SC630ULTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC630ULTRT is usually 5 days.
3.What payment methods are accepted for SC630ULTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC630ULTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC630ULTRT?
SC630ULTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC630ULTRT 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 SC630ULTRT?
For technical support, including SC630ULTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC630ULTRT requirements.
6.How does Aetrix verify that SC630ULTRT is sourced from the original manufacturer or authorized distributors?
All SC630ULTRT 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 SC630ULTRT meets industry standards.
7.What is the process for return or replacement of SC630ULTRT?
All SC630ULTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC630ULTRT, 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 SC630ULTRT part is unused and in its original packaging.
Return procedure for SC630ULTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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