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Semtech Corporation SC701CSTRT
- Part No.:
- SC701CSTRT
- Manufacturer:
- Semtech Corporation
- Package:
- 6-WFBGA, CSPBGA
- Datasheet:
-
SC701CSTRT.pdf
- Description:
- IC PWR N-CH 1:1 6CSP TAPE&REEL
- Quantity:
- Payment:
- Shipping:
Inventory:3,003
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Product details
Overview
SC701CSTRT 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 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SC701CSTRT datasheet, pinout, applications, or equivalent options, key selection considerations include its constant-clamp FET-based architecture, DFN 1.6×1.6mm 6-lead package with triple-input/triple-ground terminal grouping, temperature-stable clamping across −40°C to +125°C, and suitability for high-voltage bus protection where conventional TVS diodes exhibit rising VC with current or temperature.
Technical Context
The SC701CSTRT implements a surge-rated MOSFET as the primary shunt element, activated by a precision trigger circuit that senses overvoltage events above ~25V breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly flat (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
It operates within a −40°C to +125°C ambient range, maintains <600nA reverse leakage at 22V, and delivers 1120W peak pulse power (8/20μs). Its 20mΩ dynamic resistance and low 175pF capacitance support high-speed interface protection without signal integrity degradation.
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 degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - ensures downstream 24V-rated ICs (e.g., USB PD controllers, load switches) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD interfaces. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without derating. |
| Junction Capacitance | 175pF @ 22V, 1MHz - low enough for 20V bus protection without distorting fast transients or interfering with PD communication timing. |
| Dynamic Resistance | 20mΩ - enables stable clamping by minimizing VC rise with increasing current, unlike fixed-RDYN TVS devices. |
Pinout & Package
SC701CSTRT is housed in a RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to maximize 40A capability and minimize parasitic inductance. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); parallel connection ensures uniform current sharing and optimal surge handling. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based clamping architecture | Delivers flat 27.5–28V clamping from 24A to 40A - eliminates voltage overshoot risk seen in TVS diodes with linear VC = VBR + IPP×RDYN. |
| Temperature-stable performance | Clamping voltage varies <0.5V across −40°C to +125°C - enables reliable protection in uncontrolled industrial or automotive under-hood environments. |
| Triple-terminal input & ground | Three parallel IN pins (4–6) and three GND pins (1–3) reduce trace inductance and distribute surge current - critical for achieving full 40A rating. |
| Low dynamic resistance | 20mΩ measured between 1A and 40A (8/20μs) - minimizes IR drop during surge, preserving clamping accuracy and thermal margin. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting 20V–22V VBUS lines in USB-C receptacles against lightning-induced surges and connector hot-plug ESD. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed adjacent to the Type-C connector, clamping transients before they reach the PD controller or e-fuse. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents damage to 24V-rated PD controllers where standard TVS would exceed 35V at elevated temperature. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and factory automation systems. IC Role / Device Role / Timing Role: High-energy shunt protector that limits voltage across the load switch's internal FET drain-source during 1kV/42Ω surges per IEC 61000-4-5. Use Value: Prevents gate oxide rupture and latch-up in downstream load switches by holding clamp voltage well below their absolute maximum VDS rating. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
Use Scenario: Securing 22V auxiliary rails in battery-powered IoT gateways exposed to ESD during field servicing or lightning-coupled surges in outdoor deployments. IC Role / Device Role / Timing Role: Single-device solution for EOS suppression on non-data power lines, replacing multi-component TVS+RC networks. Use Value: Enables compact 1.6×1.6mm footprint while delivering ±30kV ESD and 40A surge robustness - reduces BOM count and PCB area vs. discrete TVS arrays. |
Use Scenario: Protecting 22V supply inputs of NVMe SSD modules and enterprise storage backplanes against system-level transients during hot-swap or power-rail faults. IC Role / Device Role / Timing Role: High-reliability transient suppressor placed at board edge, upstream of DC-DC converters and PMICs. Use Value: 175pF capacitance avoids resonance with typical 10–100μF bulk capacitors, ensuring stable clamping without oscillation or false triggering. |
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 1.6×1.6mm package, identical pinout and marking (T22XX), manufactured by Semtech - direct material-equivalent variant. | Same use cases: USB-C PD, load switch input, industrial 22V rail protection. | Select TDS2211P.C when sourcing from authorized Semtech distribution channels; SC701CSTRT is functionally and physically interchangeable. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.2V VC @ 12.3A (8/20μs); higher clamping, no flat-VC behavior, 600pF capacitance. | Suitable only for lower-energy surges (<15A) or non-temperature-critical applications; cannot replace SC701CSTRT in 40A or high-temp designs. | Choose SMAJ22A only if cost is primary constraint and clamping voltage >35V and temperature drift are acceptable. |
Compared with TDS2211P.C, SC701CSTRT offers identical performance and form factor; versus SMAJ22A, it provides 8V lower clamping at full 40A, 3.4× lower capacitance, and stable VC across temperature - making it essential for protecting modern 24V-tolerant PD controllers and industrial load switches.
Availability
SC701CSTRT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node 22V power buses requiring stable component supply, long-term lifecycle support, and compliance with IEC 61000-4-2/4-4/4-5 standards.
Supply support for SC701CSTRT 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.
The SC701CSTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-voltage, high-surge applications where flat clamping and temperature stability are mandatory.
FAQ
What is the maximum continuous operating voltage for SC701CSTRT?
The SC701CSTRT has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously withstand up to 22V DC or RMS on its input terminals without significant leakage or degradation. This makes SC701CSTRT ideal for protecting 20V–22V USB PD VBUS lines and industrial 24V-tolerant power rails where sustained voltage operation is required.
Does SC701CSTRT require a thermal pad on the PCB?
No, SC701CSTRT does not require an external thermal pad. Its DFN 1.6×1.6mm package dissipates surge energy directly in the silicon die during transient events, and the datasheet explicitly states "no thermal pad is needed." Proper layout - including short, wide traces to connector and multiple vias from GND pins (1–3) to inner ground planes - ensures optimal 40A surge handling without thermal derating.
How does SC701CSTRT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), SC701CSTRT uses a triggered FET architecture that maintains a near-constant 27.5–28V clamp from 24A to 40A. This flat response - combined with minimal temperature drift - ensures predictable protection for sensitive 24V-rated ICs across full industrial temperature ranges.
Can SC701CSTRT be used on high-speed data lines like USB SS or PCIe?
No, SC701CSTRT is not intended for high-speed data line protection. With 175pF junction capacitance, it is optimized for 22V power or low-speed I/O lines (e.g., VBUS, CC, SBU, load switch inputs). For SuperSpeed USB or PCIe lanes, Semtech recommends ultra-low-capacitance devices like RClamp3371ZC (<0.25pF); SC701CSTRT should only be applied to non-data, high-voltage rails.
What is the recommended PCB layout for SC701CSTRT to achieve full 40A rating?
To achieve the full 40A (8/20μs) rating, SC701CSTRT requires all three IN pins (4–6) and all three GND pins (1–3) to be connected via short, low-inductance traces. Place SC701CSTRT within 5mm of the protected connector, use ≥3 vias per GND pin to inner ground planes, and avoid stubs or right-angle bends. This layout minimizes parasitic inductance, ensuring surge current flows efficiently through SC701CSTRT rather than coupling into adjacent traces.
SC701CSTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 6-WFBGA, CSPBGA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Type:
- General Purpose
- Number of Outputs:
- 1
- Ratio - Input:Output:
- 1:1
- Output Configuration:
- High Side
- Output Type:
- N-Channel
- Interface:
- -
- Voltage - Load:
- 0V ~ 5.5V
- Voltage - Supply (Vcc/Vdd):
- 1.7V ~ 5.5V
- Current - Output (Max):
- 4A
- Rds On (Typ):
- 8mOhm
- Input Type:
- Non-Inverting
- Features:
- Load Discharge, Slew Rate Controlled
- Fault Protection:
- Over Voltage
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-CSP (0.9x1.4)
SC701CSTRT FAQ
1.How can I place an order for SC701CSTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC701CSTRT 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 SC701CSTRT reliable?
The price and inventory of SC701CSTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC701CSTRT is usually 5 days.
3.What payment methods are accepted for SC701CSTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC701CSTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC701CSTRT?
SC701CSTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC701CSTRT 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 SC701CSTRT?
For technical support, including SC701CSTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC701CSTRT requirements.
6.How does Aetrix verify that SC701CSTRT is sourced from the original manufacturer or authorized distributors?
All SC701CSTRT 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 SC701CSTRT meets industry standards.
7.What is the process for return or replacement of SC701CSTRT?
All SC701CSTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC701CSTRT, 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 SC701CSTRT part is unused and in its original packaging.
Return procedure for SC701CSTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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