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Semtech Corporation SC195BCSTRT
- Part No.:
- SC195BCSTRT
- Manufacturer:
- Semtech Corporation
- Package:
- 8-XFBGA, WLCSP
- Datasheet:
-
SC195BCSTRT.pdf
- Description:
- IC REG BUCK ADJ 500MA 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:3,036
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Product details
Overview
SC195BCSTRT 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 Type-C power delivery buses, load switch inputs, and industrial interfaces where stable clamping under temperature and current stress is critical.
For engineers reviewing the SC195BCSTRT datasheet, pinout, applications, or equivalent options, this device offers constant-voltage clamping across its full 40A surge range and −40°C to +125°C operating temperature-critical for USB PD, IoT, and industrial equipment designers selecting robust, low-RDSON EOS protection over conventional TVS diodes.
Technical Context
The SC195BCSTRT 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. Its clamping voltage remains nearly constant (27.5–28V) from 24A to 40A due to decreasing RDS(ON), unlike TVS diodes whose VC rises linearly with IPP.
It operates with reverse stand-off voltage of 22V, breakdown voltage of 25–27.9V, and junction capacitance of 175pF at 22V/1MHz. The device delivers 1120W peak pulse power and maintains stable performance up to +125°C, with leakage current under 600nA at VRWM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage it can protect without leakage or conduction. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during worst-case surges. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge requirements for 22V systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity standards without derating. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve and minimizes voltage overshoot during fast-rising transients. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Operating Temperature | −40°C to +125°C - supports deployment in extended-temperature industrial and automotive environments. |
Pinout & Package
SC195BCSTRT is housed in a RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with six leads and no thermal pad. All pins must be soldered for rated surge performance.
| 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 handling. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS in USB Type-C); tied together externally to distribute surge current across parallel paths. |
Key Features
| Feature | Design Value |
|---|---|
| Constant clamping voltage | 27.5–28V across full 24–40A surge range - eliminates need for over-spec'ing IPP to meet voltage limits. |
| Low dynamic resistance | 20mΩ - reduces voltage overshoot during sub-microsecond transients and improves energy diversion efficiency. |
| High-temperature stability | Clamping unchanged from −40°C to +125°C - removes thermal derating calculations required for TVS diodes. |
| Integrated FET-based architecture | Replaces discrete TVS + MOSFET solutions - saves board space and eliminates layout sensitivity to gate drive parasitics. |
| UL 94V-0 molding compound | Ensures flame-retardant reliability in enclosed industrial and consumer enclosures without additional conformal coating. |
Applications
| USB Type-C Power Delivery 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 and lightning-induced surges. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed directly at connector, clamping transients before they reach PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents controller latch-up or gate oxide damage where TVS devices exceed 35V at same conditions. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the switch's internal FET during 1kV/42Ω surges. Use Value: Prevents overvoltage failure of the load switch's integrated MOSFET by holding clamp <28V - enabling use of lower-voltage, cost-optimized switches. |
| IoT Edge Device Power Rail Protection | Storage Device 22V Bus Protection |
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways and cellular routers subjected to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-component, low-capacitance (175pF) protector for compact, thermally constrained PCB layouts. Use Value: Delivers 40A surge capability in 1.6×1.6mm footprint - replaces larger multi-device TVS arrays while improving thermal margin. |
Use Scenario: Protecting 22V power inputs in NVMe SSD enclosures and enterprise storage backplanes against hot-plug and cable discharge events. IC Role / Device Role / Timing Role: High-reliability EOS suppressor placed at board edge, coordinated with low-capacitance TVS on data lanes (e.g., RClamp3371ZC). Use Value: Ensures sustained clamping performance across storage device lifecycle - no degradation after repeated 30kV ESD strikes per IEC 61000-4-2. |
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. | No difference; validated for identical USB PD, load switch, and industrial use cases. | Select TDS2211P.C if requiring Semtech's standard tape-and-reel packaging (3,000 pcs/reel) and official part number traceability. |
| uClamp2411ZA | 24V working voltage, lower 20A IPP rating, higher 33V clamping at 20A, and 12pF capacitance - optimized for CC/SBU lines, not power rails. | Intended for low-voltage, low-capacitance signal-line protection - unsuitable for 22V bus clamping due to higher VC and lower surge rating. | Use uClamp2411ZA only for auxiliary control lines (CC, SBU); SC195BCSTRT remains required for main VBUS protection. |
Compared with TDS2211P.C (identical function and form) and uClamp2411ZA (lower-power signal-line variant), SC195BCSTRT provides the only Semtech-qualified 22V/40A constant-clamp solution for high-energy power rail protection - making it irreplaceable in USB PD and industrial load-switch designs demanding guaranteed 28V clamping at full temperature and current range.
Availability
SC195BCSTRT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT edge device power rails requiring stable component supply with guaranteed long-term availability and full traceability.
Supply support for SC195BCSTRT 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.
SC195BCSTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection with superior clamping stability and temperature independence.
FAQ
What is the maximum continuous operating voltage for SC195BCSTRT?
The SC195BCSTRT has a reverse stand-off voltage (VRWM) of 22V, meaning it reliably blocks up to 22V DC without significant leakage current. This makes SC195BCSTRT suitable for protecting 22V nominal power rails such as USB PD VBUS, industrial 24V systems (with margin), and storage device auxiliary supplies.
Does SC195BCSTRT require external components like series resistors or RC networks?
No, SC195BCSTRT is a fully self-contained transient suppressor and requires no external components for basic operation. Its integrated trigger circuit and shunt FET enable immediate activation during EOS events. Layout best practice mandates direct, low-inductance connections from pins 4–6 to the protected line and pins 1–3 to solid ground - no added passive components are needed or recommended.
How does SC195BCSTRT 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), SC195BCSTRT maintains a near-constant 27.5–28V clamp from 24A to 40A due to its FET-based architecture and decreasing RDS(ON). This eliminates design uncertainty caused by TVS voltage drift across temperature and current, making SC195BCSTRT especially valuable in thermally demanding applications.
Can SC195BCSTRT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, SC195BCSTRT is not intended for high-speed data lines. With 175pF junction capacitance, it is optimized for 22V power rail and low-frequency I/O protection. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF). SC195BCSTRT should be placed only on VBUS, CC, or load switch input - never on signal pairs.
Is SC195BCSTRT compliant with RoHS and halogen-free standards?
Yes, SC195BCSTRT is Pb-free, halogen-free, and fully compliant with RoHS and WEEE directives. Its molding compound meets UL 94V-0 flammability rating, and the lead finish is lead-free - satisfying environmental and safety requirements for industrial, consumer, and medical-grade electronics.
SC195BCSTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 8-XFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.9V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 3.6V
- Current - Output:
- 500mA
- Frequency - Switching:
- 3.5MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WLCSP (0.80x0.80)
SC195BCSTRT FAQ
1.How can I place an order for SC195BCSTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC195BCSTRT 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 SC195BCSTRT reliable?
The price and inventory of SC195BCSTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC195BCSTRT is usually 5 days.
3.What payment methods are accepted for SC195BCSTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC195BCSTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC195BCSTRT?
SC195BCSTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC195BCSTRT 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 SC195BCSTRT?
For technical support, including SC195BCSTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC195BCSTRT requirements.
6.How does Aetrix verify that SC195BCSTRT is sourced from the original manufacturer or authorized distributors?
All SC195BCSTRT 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 SC195BCSTRT meets industry standards.
7.What is the process for return or replacement of SC195BCSTRT?
All SC195BCSTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC195BCSTRT, 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 SC195BCSTRT part is unused and in its original packaging.
Return procedure for SC195BCSTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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