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Semtech Corporation SC4215ISTRT
- Part No.:
- SC4215ISTRT
- Manufacturer:
- Semtech Corporation
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
SC4215ISTRT.pdf
- Description:
- IC REG LIN POS ADJ 2A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:119
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Product details
Overview
SC4215ISTRT 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 PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the SC4215ISTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance, DFN-6 package layout compatibility, and compliance with IEC 61000-4-2/4-4/4-5 standards.
Technical Context
The SC4215ISTRT 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 conditions.
It operates with a 22V reverse stand-off voltage (VRWM) and 25–27.9V breakdown (VBR), exhibits only 130–600nA leakage at 22V, and delivers 175pF junction capacitance at 22V/1MHz-enabling robust protection without signal integrity compromise on medium-speed power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V reverse stand-off - matches USB PD 20V nominal bus with 2V margin before clamping activation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - stays below 28V across full rated current and temperature range. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment interfaces. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 requirements for handheld and connector-exposed systems. |
| Dynamic Resistance | 20mΩ - enables low-voltage overshoot during fast transients and minimizes power dissipation in FET channel. |
| Junction Capacitance | 175pF at 22V/1MHz - suitable for DC/low-frequency power rail protection without affecting control loop stability. |
| Package | DFN 1.6 × 1.6 × 0.55 mm, 6-lead - enables compact placement near USB-C connectors or load switch inputs. |
Pinout & Package
SC4215ISTRT is housed in a Pb-free, RoHS-compliant 6-pin DFN package (1.6mm × 1.6mm × 0.55mm) with exposed thermal pad not required-energy is dissipated in the silicon FET. All pins must be connected: Pins 1–3 are ground terminals; Pins 4–6 are input terminals tied together to the protected line.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return for surge current - all three must be connected to minimize inductance and maximize 40A capability. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected bus - single-point connection to VBus or load switch input ensures uniform current sharing. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A and remains stable from −40°C to +125°C - eliminates derating uncertainty in thermal designs. |
| FET-based shunt topology | Replaces junction-limited TVS with low-RDS(on) MOSFET - reduces thermal stress and enables higher surge endurance than silicon avalanche diodes. |
| High-energy surge rating | 1120W peak pulse power (8/20μs) - supports repeated lightning-surge events in industrial power inputs without degradation. |
| Low-leakage protection | ≤600nA reverse leakage at 22V - avoids quiescent current penalty in battery-backed or always-on IoT endpoints. |
| Compact DFN layout | 1.6 × 1.6 mm footprint with no thermal pad - saves >50% board area vs. SOT-23 or SOIC alternatives while maintaining 6-terminal robustness. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting the VBus line of a USB-C port supporting up to 20V/5A PD negotiation against ESD, lightning-induced surges, and hot-plug transients. IC Role / Device Role / Timing Role: Transient diverting suppressor placed directly at the connector, clamping overvoltage before it reaches the PD controller or buck converter. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents false OVP trips and ensures reliable PD communication under real-world surge stress. |
Use Scenario: Safeguarding the input of an e-fuse or load switch (e.g., HS2950P) in remote meters, robotics, or factory automation modules exposed to field wiring transients. IC Role / Device Role / Timing Role: Primary front-end protector that limits voltage seen by the load switch's internal FET gate oxide and drain-source junction. Use Value: Clamps below 28V even at 40A/125°C - avoids destructive breakdown of the load switch's 30V-rated internal FET while enabling smaller, lower-cost IC selection. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet Main Power Input Protection |
|
Use Scenario: Securing the 12–22V DC input of battery-powered IoT gateways or sensor hubs connected to PoE injectors or wall adapters. IC Role / Device Role / Timing Role: Standalone EOS suppressor on the main power rail, operating independently of system MCU or PMIC supervision. Use Value: Delivers ±30kV ESD immunity and 40A surge handling in <2.6mm² area - enables ruggedized, compact enclosure design without external spark gaps or varistors. |
Use Scenario: Protecting the 20V input stage of ultrabooks or 2-in-1 tablets using USB-C charging, where space and thermal constraints limit discrete TVS options. IC Role / Device Role / Timing Role: High-density, low-profile transient suppressor mounted adjacent to the USB-C receptacle PCB footprint. Use Value: 175pF capacitance and 20mΩ dynamic resistance prevent coupling into adjacent high-speed traces - preserves signal integrity on nearby USB SS or DP lanes. |
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 code T22 - direct Semtech manufacturing variant with 3,000/reel tape-and-reel packaging. | No functional difference - used interchangeably in production; differs only in reel quantity and orderable suffix. | Select TDS2211P.C for volume procurement where standard Semtech ordering channels apply. |
| uClamp2411ZA.TCT | Zener-based TVS with 24V VRWM, 35V VC at 12A, 0.25pF capacitance - higher clamping, lower current rating, ultra-low capacitance. | Targeted at CC/SBU lines in USB-C, not VBus - unsuitable for 40A surge or 22V power rail protection. | Choose uClamp2411ZA.TCT only for low-capacitance data-line protection; not a functional substitute for SC4215ISTRT's power-rail role. |
Compared with TDS2211P.C (identical device) and uClamp2411ZA.TCT (data-line TVS), SC4215ISTRT uniquely delivers 40A surge handling with sub-28V clamping in a 1.6mm² DFN - making it the only suitable option for robust, thermally stable 22V power rail protection in space-constrained USB PD and industrial systems.
Availability
SC4215ISTRT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for SC4215ISTRT 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.
The SC4215ISTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability power rail protection where stable clamping, temperature independence, and high surge endurance are critical.
FAQ
What is the maximum operating temperature range for SC4215ISTRT?
The SC4215ISTRT is rated for continuous operation from −40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range - varying by less than 0.5V from −40°C to +125°C at 40A - ensuring consistent protection performance in automotive under-hood, industrial control, and outdoor IoT environments where thermal cycling is severe.
Does SC4215ISTRT require a thermal pad on the PCB?
No, SC4215ISTRT does not require a thermal pad. Unlike power MOSFETs or linear regulators, its surge energy is dissipated within the silicon FET channel during transient events, not continuously. The DFN package relies on low-inductance GND connections (Pins 1–3) and short trace routing-not copper area-for effective current return and thermal management.
Can SC4215ISTRT be used to protect USB-C CC lines?
No, SC4215ISTRT is not suitable for USB-C CC (Configuration Channel) line protection. Its 175pF capacitance and 22V working voltage are optimized for power rails like VBus, not low-voltage, high-speed signaling lines. For CC lines, Semtech recommends uClamp2411ZA.TCT - a 24V, 0.25pF TVS specifically designed for sub-5V bidirectional signaling integrity.
How does SC4215ISTRT's clamping behavior differ from standard TVS diodes?
SC4215ISTRT uses a triggered FET shunt instead of a Zener junction, resulting in near-constant clamping voltage (27.5–28V) across 24–40A and −40°C to +125°C. Standard TVS diodes exhibit rising clamping (VC = VBR + IPP × RDYN) with current and temperature - often exceeding 38V at 125°C - making SC4215ISTRT more predictable and safer for sensitive 30V-rated downstream ICs.
Is SC4215ISTRT pin-compatible with other Semtech TDS devices?
SC4215ISTRT shares the same 6-pin DFN package and pinout (Pins 1–3 = GND, Pins 4–6 = IN) with TDS2211P.C and TDS2411P, but is not functionally interchangeable without design review. TDS2411P has 24V VRWM and different clamping characteristics - substituting it for SC4215ISTRT risks premature clamping or insufficient protection margin on a 22V rail.
SC4215ISTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Adjustable (Fixed)
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.8V (0.8V, 2.5V)
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.6V @ 2A
- Current - Output:
- 2A
- Current - Quiescent (Iq):
- 50 µA
- Current - Supply (Max):
- 1.75 mA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC, EDP
SC4215ISTRT FAQ
1.How can I place an order for SC4215ISTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC4215ISTRT 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 SC4215ISTRT reliable?
The price and inventory of SC4215ISTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC4215ISTRT is usually 5 days.
3.What payment methods are accepted for SC4215ISTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC4215ISTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC4215ISTRT?
SC4215ISTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC4215ISTRT 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 SC4215ISTRT?
For technical support, including SC4215ISTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC4215ISTRT requirements.
6.How does Aetrix verify that SC4215ISTRT is sourced from the original manufacturer or authorized distributors?
All SC4215ISTRT 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 SC4215ISTRT meets industry standards.
7.What is the process for return or replacement of SC4215ISTRT?
All SC4215ISTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC4215ISTRT, 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 SC4215ISTRT part is unused and in its original packaging.
Return procedure for SC4215ISTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC4215ISTRT Tags
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