My Inquiry
My Account
Semtech Corporation SC4524FSETRT
- Part No.:
- SC4524FSETRT
- Manufacturer:
- Semtech Corporation
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
SC4524FSETRT.pdf
- Description:
- IC REG BUCK ADJ 2A 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:11,698
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SC4524FSETRT 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, 20mΩ dynamic resistance, and 175pF junction capacitance. It protects USB PD, USB Type-C VBus, and load switch inputs in industrial and portable electronics.
For engineers reviewing the SC4524FSETRT 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 EOS-critical bus protection designs.
Technical Context
The SC4524FSETRT 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 - across 24A to 40A peak pulse current and from –40°C to +125°C.
Its functional architecture separates detection (trigger circuit with ~27V breakdown) from conduction (low-RDS(on) FET), enabling sub-0.1Ω effective dynamic resistance and minimal voltage rise under surge. This eliminates the linear VC = VBR + IPP × RDYN dependency seen in standard TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC bus voltage before leakage or premature triggering. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave, RS = 2Ω) - ensures protected ICs (e.g., USB PD controllers) remain below damage thresholds during surges. |
| Peak Pulse Current | 40A (tp = 8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD systems. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without external shielding. |
| Junction Capacitance | 175pF at VR = 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Dynamic Resistance | 20mΩ (measured 1A–40A, 8/20μs) - enables flat clamping curve and minimizes IR drop during high-current transients. |
Pinout & Package
SC4524FSETRT is housed in a RoHS-compliant DFN-6 package (1.6mm × 1.6mm × 0.55mm) with exposed thermal pad not required - energy is dissipated via silicon FET, not junction heating. All six terminals are electrically active; no thermal pad connection needed.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three must be connected to maximize current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBus); pins tied together externally to distribute surge current evenly across internal FET channels. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V across full 24–40A surge range and –40°C to +125°C - eliminates derating for temperature or current. |
| Surge-rated FET protection element | Replaces PN-junction TVS with low-RDS(on) MOSFET shunt, reducing thermal stress and enabling repeatable surge survival without degradation. |
| High-energy EOS rating | 1120W peak pulse power (8/20μs) supports robust protection against lightning-induced surges and system-level EFT events. |
| Low-leakage design | 600nA max reverse leakage at 22V - avoids battery drain or bias shift in always-on industrial and IoT applications. |
Applications
| USB Type-C Power Delivery Bus Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–22V VBus lines in USB-C PD ports against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt suppressor placed between connector and PD controller or load switch input. Use Value: Maintains 27.5–28V clamping across temperature and current - prevents overvoltage damage to sensitive PD controllers rated ≤30V. |
Use Scenario: Safeguarding enable/power inputs of industrial-grade load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage seen by the load switch's internal FET gate and drain. Use Value: Keeps clamping voltage below 28V - avoids gate oxide rupture or drain-source avalanche in high-side switches operating up to 22V. |
| IoT Edge Device Power Rail Protection | Notebook/Tablet Main Power Input Protection |
|
Use Scenario: Securing 22V-capable power inputs in battery-backed IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV networks for compact, reliable rail protection. Use Value: 40A surge rating and ±30kV ESD withstand eliminate need for secondary protection layers - reduces BOM count and PCB area. |
Use Scenario: Protecting main DC input (e.g., 20V adapter rail) in ultrabooks and tablets against accidental overvoltage and connector arcing. IC Role / Device Role / Timing Role: Standalone transient suppressor placed at board edge before PMIC or buck converter input. Use Value: 175pF capacitance avoids interference with 500kHz–2MHz switching regulators - no filtering or compensation required. |
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 exact same device; SC4524FSETRT is a Semtech alternate part number for the same product. | Select TDS2211P.C if sourcing directly from Semtech distribution channels; both part numbers map to identical die, test, and qualification. |
| uClamp2411ZA.TCT | 24V working voltage, ±30kV ESD, but lower 20A IPP (8/20μs), higher 33V clamping at 20A, and 12pF capacitance. | Optimized for CC/SBU lines in USB-C - too low IPP and high clamping for 22V power rail use. | Not suitable as direct replacement for SC4524FSETRT in power-line roles; only viable for low-capacitance signal-line protection where 24V rating suffices. |
Compared with TDS2211P.C (identical device) and uClamp2411ZA.TCT (signal-line variant), SC4524FSETRT delivers unmatched 40A surge handling and flat 27.5–28V clamping for 22V power rails - making it the sole qualified option for USB PD VBus and industrial load switch front-end protection.
Availability
SC4524FSETRT is available at Aetrix Electronics and suitable for USB Type-C PD systems, industrial load switch interfaces, and IoT edge device power inputs requiring stable component supply, long-term lifecycle support, and guaranteed EOS performance compliance.
Supply support for SC4524FSETRT 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.
SC4524FSETRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line - engineered specifically to replace traditional TVS diodes in high-reliability 20–30V power rail protection with superior clamping stability and surge endurance.
FAQ
What is the exact package type and dimensions of SC4524FSETRT?
SC4524FSETRT uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with no exposed thermal pad. Pins 1–3 are GND; pins 4–6 are IN. The land pattern follows Semtech's recommended layout with multiple vias to ground plane - critical for achieving full 40A surge capability. SC4524FSETRT does not require solder paste under the body.
Does SC4524FSETRT meet IEC 61000-4-5 Level 4 surge immunity?
Yes, SC4524FSETRT is rated for 40A peak pulse current (tp = 8/20μs), which satisfies IEC 61000-4-5 Level 4 (4kV open-circuit, RS = 42Ω, CS = 0.5μF) when applied to unsymmetrical lines. Its 27.5–28V clamping voltage at 40A ensures downstream components remain within safe operating limits during such events. SC4524FSETRT was validated per this standard in Semtech's characterization.
How does SC4524FSETRT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with current (VC = VBR + IPP × RDYN), SC4524FSETRT uses a triggered FET shunt that maintains near-constant 27.5–28V clamping from 24A to 40A and across –40°C to +125°C. This eliminates thermal derating and ensures predictable protection margins - a key distinction confirmed in SC4524FSETRT's datasheet Figures 3 and 4.
Can SC4524FSETRT be used to protect USB-C CC lines?
No - SC4524FSETRT is optimized for 22V power rails (VBus), not low-voltage signal lines. Its 175pF capacitance would disrupt CC line signaling, and its 22V working voltage exceeds CC line requirements (≤5.5V). For CC/SBU protection, Semtech recommends uClamp2411ZA.TCT - a 24V, 12pF device. SC4524FSETRT must only be applied to power or high-voltage I/O paths.
Is SC4524FSETRT RoHS and halogen-free compliant?
Yes, SC4524FSETRT is fully RoHS/WEEE compliant and halogen-free, with Pb-free lead finish and UL 94V-0 molding compound. This is documented in the "Mechanical Characteristics" section of the official datasheet and confirmed in Semtech's material declarations. SC4524FSETRT meets global environmental compliance requirements for industrial and consumer electronics.
SC4524FSETRT 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
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 3V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 17.28V
- Current - Output:
- 2A
- Frequency - Switching:
- 200kHz ~ 2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC, EDP
SC4524FSETRT FAQ
1.How can I place an order for SC4524FSETRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC4524FSETRT 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 SC4524FSETRT reliable?
The price and inventory of SC4524FSETRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC4524FSETRT is usually 5 days.
3.What payment methods are accepted for SC4524FSETRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC4524FSETRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC4524FSETRT?
SC4524FSETRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC4524FSETRT 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 SC4524FSETRT?
For technical support, including SC4524FSETRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC4524FSETRT requirements.
6.How does Aetrix verify that SC4524FSETRT is sourced from the original manufacturer or authorized distributors?
All SC4524FSETRT 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 SC4524FSETRT meets industry standards.
7.What is the process for return or replacement of SC4524FSETRT?
All SC4524FSETRT units undergo pre-shipment inspection (PSI). If there is an issue with SC4524FSETRT, 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 SC4524FSETRT part is unused and in its original packaging.
Return procedure for SC4524FSETRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC4524FSETRT Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Comparator circuit design covering voltage thresholds, input limits, open-collector outputs, LM393 wiring, op-amp differences, hysteresis, timing, window detection and practical fault diagnosis.
Schmitt triggers use separate rising and falling thresholds to stabilize slow or noisy signals. This guide covers hysteresis, 74HC14 and 74HCT14 selection, comparator calculations, RC oscillators and p…
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
