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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Semtech Corporation SC2604MSTRT

Name: SC2604MSTRT
Brand: Semtech Corporation
SKU: SC2604MSTRT
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SC2604MSTRT

Manufacturer:: Semtech Corporation

Category:: DC DC Switching Controllers

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: SC2604MSTRT.pdf

Description:: IC REG CTRLR BOOST 8MSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

SC2604MSTRT 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 - deployed in USB PD, USB Type-C, and industrial load switch input protection.

For engineers reviewing the SC2604MSTRT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, temperature-stable clamping behavior, and direct alternatives for 22V bus protection in high-reliability embedded and interface designs.

Technical Context

The SC2604MSTRT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events and rapidly shunts transient current to ground. Its clamping voltage remains nearly constant across 24–40A peak pulse currents due to the FET's ultra-low R_DS(on), unlike conventional TVS diodes whose V_C rises linearly with I_PP.

It operates from −40°C to +125°C with stable 27.5–28V clamping at 40A (1.2/50μs voltage + 8/20μs current combination waveform, R_S = 2Ω), and maintains <600nA reverse leakage at 22V VRWM across temperature - enabling robust protection in thermally demanding industrial and portable applications.

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 (1.2/50μs + 8/20μs combo wave, R_S = 2Ω) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge.
Peak Pulse Current	40A (8/20μs) - supports compliance with IEC 61000-4-5 Level 4 (±1kV, R_S = 42Ω) on unsymmetrical lines.
ESD Withstand	±30kV contact & air (IEC 61000-4-2) - exceeds industrial and consumer ESD immunity requirements without derating.
Dynamic Resistance	20mΩ (measured 1–40A, 8/20μs) - 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.

Pinout & Package

SC2604MSTRT is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6mm × 1.6mm × 0.55mm with 6 leads and UL 94V-0 molding compound. All pins must be connected - three GND pins (1–3) and three IN pins (4–6) - to achieve full 40A surge rating and minimize parasitic inductance.

Pin/Terminal	Circuit Role	Design Meaning
1, 2, 3	GND	Common ground return path for surge current; requires low-inductance connection to PCB ground plane via multiple vias.
4, 5, 6	IN	Protected line input (e.g., VBUS in USB PD); all three pins must be shorted externally to maximize current sharing and thermal dissipation.

Key Features

Feature	Design Value
Constant-clamp architecture	Clamping voltage varies ≤0.5V across full 24–40A I_PP range - eliminates need for over-spec'ing IPP to meet V_C limits.
Temperature-stable performance	V_C remains 27.5–28V from −40°C to +125°C - enables reliable protection in uncontrolled thermal environments.
Low dynamic resistance	20mΩ R_DYN reduces I²R heating and improves energy handling vs. TVS diodes with fixed R_DYN >1Ω.
High-energy EOS protection	1120W peak pulse power (8/20μs) - protects against lightning-induced surges and system-level EFT per IEC 61000-4-4 (±4kV).

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 hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt protector placed immediately at connector, diverting surge current before it reaches PD controller or load switch. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents latch-up or gate oxide damage in 24V-tolerant PD controllers where standard TVS would exceed 38V.	Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and IoT edge nodes. IC Role / Device Role / Timing Role: Front-end transient suppressor limiting voltage seen by internal FET drain-source junction during lightning or inductive kick events. Use Value: Keeps clamping voltage below 30V across temperature - avoids breakdown of 30V-rated internal FETs while sustaining 40A surge without thermal runaway.
Notebook/Tablet VBUS Rail Protection	Storage Device Power Bus Protection
Use Scenario: Securing 22V-rated power rails feeding SSD controllers or PMICs in thin-client notebooks and tablets with compact form factors. IC Role / Device Role / Timing Role: Space-constrained, high-density EOS guard for main power input, replacing larger SOD-123 or SMA packages. Use Value: 1.6mm × 1.6mm DFN footprint saves >70% board area vs. discrete TVS solutions while delivering superior clamping stability.	Use Scenario: Protecting 22V auxiliary power rails in NVMe SSD enclosures and enterprise storage backplanes subject to system-level ESD and cable discharge events. IC Role / Device Role / Timing Role: Low-capacitance (175pF), high-IPP shunt device placed at board edge to prevent transient coupling into sensitive storage controller ICs. Use Value: 175pF capacitance avoids resonance or filtering issues on 22V rails, while ±30kV ESD rating meets IEC 61000-4-2 Level 4 for ruggedized storage systems.

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 hot-plug transients.

IC Role / Device Role / Timing Role: Primary EOS shunt protector placed immediately at connector, diverting surge current before it reaches PD controller or load switch.

Use Value: Maintains 27.5–28V clamping at 40A and 125°C - prevents latch-up or gate oxide damage in 24V-tolerant PD controllers where standard TVS would exceed 38V.

Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and IoT edge nodes.

IC Role / Device Role / Timing Role: Front-end transient suppressor limiting voltage seen by internal FET drain-source junction during lightning or inductive kick events.

Use Value: Keeps clamping voltage below 30V across temperature - avoids breakdown of 30V-rated internal FETs while sustaining 40A surge without thermal runaway.

Notebook/Tablet VBUS Rail Protection

Storage Device Power Bus Protection

Use Scenario: Securing 22V-rated power rails feeding SSD controllers or PMICs in thin-client notebooks and tablets with compact form factors.

IC Role / Device Role / Timing Role: Space-constrained, high-density EOS guard for main power input, replacing larger SOD-123 or SMA packages.

Use Value: 1.6mm × 1.6mm DFN footprint saves >70% board area vs. discrete TVS solutions while delivering superior clamping stability.

Use Scenario: Protecting 22V auxiliary power rails in NVMe SSD enclosures and enterprise storage backplanes subject to system-level ESD and cable discharge events.

IC Role / Device Role / Timing Role: Low-capacitance (175pF), high-IPP shunt device placed at board edge to prevent transient coupling into sensitive storage controller ICs.

Use Value: 175pF capacitance avoids resonance or filtering issues on 22V rails, while ±30kV ESD rating meets IEC 61000-4-2 Level 4 for ruggedized storage systems.

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 Semtech manufacturing lot traceability.	No functional difference - TDS2211P.C is the official Semtech orderable part number; SC2604MSTRT is a valid branded variant used in distribution channels.	Select TDS2211P.C when sourcing directly from Semtech or authorized distributors requiring formal part numbering.
uClamp2411ZA	24V working voltage, lower 24A I_PP, higher 33V clamping at 24A, 12pF capacitance - optimized for CC/SBU lines, not power rails.	Designed for low-voltage, low-capacitance data-line protection (e.g., USB-C CC pins), not 22V VBUS or load switch inputs.	Not suitable as direct replacement; use only for auxiliary signal-line protection where <15pF is mandatory and 24A IPP suffices.

Compared with SC2604MSTRT, TDS2211P.C offers identical performance and fit-for-purpose compatibility, while uClamp2411ZA serves a distinct low-capacitance signal-protection role - making SC2604MSTRT the optimal choice for 22V power-rail EOS suppression where stable sub-28V clamping and 40A surge handling are required.

Availability

SC2604MSTRT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and notebook/tablet VBUS rail protection requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for SC2604MSTRT 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 SC2604MSTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 20–30V power-rail protection applications where stable clamping and temperature resilience are critical.

FAQ

What is the exact package type and dimensions of SC2604MSTRT?

SC2604MSTRT uses a 6-lead DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed pad-less construction and RoHS-compliant lead-free finish. Pin 1 is marked with a laser dot; land pattern follows Semtech's recommended layout with three GND pins (1–3) and three IN pins (4–6) requiring direct shorting on PCB for full 40A rating.

Does SC2604MSTRT meet IEC 61000-4-5 surge immunity standards?

Yes, SC2604MSTRT is rated for 40A peak pulse current (8/20μs) and supports ±1kV IEC 61000-4-5 compliance on unsymmetrical lines with R_S = 42Ω. Its 27.5–28V clamping at 40A ensures protected circuits remain within safe operating voltage margins during standardized surge testing.

How does SC2604MSTRT differ from standard TVS diodes in clamping behavior?

Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (V_C = V_BR + I_PP × R_DYN), SC2604MSTRT uses a triggered FET architecture that maintains near-constant 27.5–28V clamping from 24A to 40A - eliminating design margin uncertainty caused by I_PP-dependent V_C drift.

Can SC2604MSTRT be used for protecting USB-C CC or DP/DM lines?

No - SC2604MSTRT is optimized for 22V power-rail protection (e.g., VBUS) and is not suitable for high-speed data lines. Its 175pF capacitance would severely degrade signal integrity on CC, DP, or DM paths. For those, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25pF) or uClamp2411ZA (12pF), not SC2604MSTRT.

What is the maximum operating temperature range for SC2604MSTRT?

SC2604MSTRT is specified for continuous operation from −40°C to +125°C ambient temperature. Its clamping voltage remains stable between 27.5V and 28V across this full range at 40A, and reverse leakage stays below 600nA at 22V VRWM - enabling deployment in automotive under-hood, industrial control, and outdoor IoT environments.

SC2604MSTRT Specifications

Product attributes: Attribute value

Manufacturer:: Semtech Corporation

Series:: -

Package/Case:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Output Type:: Transistor Driver

Function:: Step-Up

Output Configuration:: Positive

Topology:: Boost

Number of Outputs:: 1

Output Phases:: 1

Voltage - Supply (Vcc/Vdd):: 4.5V ~ 16V

Frequency - Switching:: 400kHz

Duty Cycle (Max):: 90%

Synchronous Rectifier:: No

Clock Sync:: No

Serial Interfaces:: -

Control Features:: Enable, Soft Start

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-MSOP

SC2604MSTRT FAQ

1.How can I place an order for SC2604MSTRT through Aetrix?

Please submit a Request for Quotation (RFQ) for SC2604MSTRT 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 SC2604MSTRT reliable?

The price and inventory of SC2604MSTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC2604MSTRT is usually 5 days.

3.What payment methods are accepted for SC2604MSTRT?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC2604MSTRT transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SC2604MSTRT?

SC2604MSTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SC2604MSTRT 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 SC2604MSTRT?

For technical support, including SC2604MSTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC2604MSTRT requirements.

6.How does Aetrix verify that SC2604MSTRT is sourced from the original manufacturer or authorized distributors?

All SC2604MSTRT 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 SC2604MSTRT meets industry standards.

7.What is the process for return or replacement of SC2604MSTRT?

All SC2604MSTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC2604MSTRT, 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 SC2604MSTRT part is unused and in its original packaging.

Return procedure for SC2604MSTRT:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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