My Inquiry
My Account
Semtech Corporation SC2597SETRC
- Part No.:
- SC2597SETRC
- Manufacturer:
- Semtech Corporation
- Category:
- Special Purpose Regulators
- Package:
- 8-SOIC (0.154", 3.90mm Width) Exposed Pad
- Datasheet:
-
SC2597SETRC.pdf
- Description:
- IC REG LDO DDR 1OUT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,298
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SC2597SETRC from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and stable 27.5–28V clamping across temperature and current range. Used in USB Type-C PD input protection to safeguard controllers from voltage overshoot.
For engineers reviewing the SC2597SETRC datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, DFN-6 package layout guidance, clamping stability data across -40°C to +125°C, and validated alternatives for industrial and USB PD designs.
Technical Context
The SC2597SETRC 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 due to ultra-low dynamic resistance (20 mΩ) and decreasing RDS(on) under surge conditions.
It operates with reverse stand-off voltage of 22V, breakdown at 25–27.9V, and junction capacitance of 175 pF at 22V/1MHz. The device maintains stable clamping (27.5–28V) at both 24A and 40A IPP under 1.2/50μs–8/20μs combination waveforms with 2Ω source impedance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus voltage and avoids false triggering during normal operation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below typical 29V damage threshold of USB PD controllers across full temperature range. |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 system-level ESD immunity requirements for portable electronics. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 industrial surge immunity for 1kV line-to-ground transients (RS = 42Ω). |
| Dynamic Resistance | 20 mΩ - enables low-voltage drop during conduction, minimizing power dissipation and thermal stress during surge events. |
| Junction Capacitance | 175 pF at 22V/1MHz - suitable for DC power rail and low-speed signal line protection without signal integrity impact. |
Pinout & Package
SC2597SETRC is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with UL 94V-0 molding compound. All six terminals are surface-mount; no thermal pad required - energy is dissipated within the FET structure.
| 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); parallel connection ensures uniform current sharing and optimal clamping performance. |
Key Features
| Feature | Design Value |
|---|---|
| Constant Clamping Voltage | 27.5–28V across 24A–40A IPP and -40°C to +125°C - eliminates derating concerns in thermally demanding environments. |
| FET-Based Shunt Architecture | Replaces traditional pn-junction TVS with low-RDS(on) switch - reduces clamping rise vs. current and improves reliability over repeated surges. |
| High-Energy Surge Handling | 1120W peak pulse power (8/20μs) - supports robust protection against lightning-induced transients in industrial equipment. |
| Low Leakage | ≤600 nA at 22V - prevents measurable power loss in always-on battery-powered IoT devices. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD negotiation. IC Role / Device Role / Timing Role: Primary EOS suppressor placed between connector and PD controller or load switch. Use Value: Maintains clamping ≤28V across temperature - prevents latch-up or gate oxide damage in downstream silicon rated for <29V absolute max. |
Use Scenario: Safeguarding enable and input pins of industrial-grade e-fuses (e.g., HS2950P) exposed to field wiring transients. IC Role / Device Role / Timing Role: Front-end transient diverter limiting voltage seen by internal FETs during lightning or inductive switching events. Use Value: Enables use of smaller, lower-cost load switches by absorbing >95% of surge energy before it reaches sensitive control circuitry. |
| Notebook/Tablet DC Power Input Protection | IoT Gateway Power Bus Protection |
Use Scenario: Securing 19–22V adapter inputs in thin-client devices where board space and thermal margin are constrained. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV networks for compact, high-reliability designs. Use Value: 1.6×1.6mm footprint saves >60% area versus discrete TVS+capacitor solutions while delivering superior clamping consistency. |
Use Scenario: Hardening 24V auxiliary rails in smart meter or edge gateway systems deployed in electrically noisy substations or factory floors. IC Role / Device Role / Timing Role: Standalone surge protector on main power entry point, upstream of DC-DC converters and microcontrollers. Use Value: Withstands repeated 40A surges without parameter drift - critical for unattended deployments requiring >10-year field life. |
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 manufacturer-recommended replacement. | No functional difference; used interchangeably in USB PD and industrial designs per Semtech documentation. | Select TDS2211P.C when sourcing from authorized Semtech channels with full traceability and date-code visibility. |
| uClamp2411ZA.TCT | 24V working voltage, ±30kV ESD, but lower 20A IPP and higher 33V clamping - less robust for 40A surge compliance. | Better suited for CC/SBU lines in USB-C; not recommended for VBUS due to insufficient current rating and elevated clamping. | Consider only for secondary protection roles where peak current demand is <20A and clamping margin allows ≥33V. |
Compared with SC2597SETRC, TDS2211P.C offers identical performance and form factor with full documentation alignment, while uClamp2411ZA.TCT serves narrower low-current applications and requires careful clamping margin analysis for VBUS use.
Availability
SC2597SETRC is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and notebook DC power rails requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/WEEE compliance.
Supply support for SC2597SETRC 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 SC2597SETRC 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 and temperature resilience are critical.
FAQ
What is the maximum operating temperature for SC2597SETRC?
The SC2597SETRC is rated for continuous operation from -40°C to +125°C ambient temperature. Its clamping voltage remains stable across this full range, with no degradation in 40A surge capability or leakage current up to 600 nA at 22V. This makes SC2597SETRC suitable for under-hood automotive modules and industrial enclosures without forced cooling.
Does SC2597SETRC require a thermal pad on the PCB?
No, SC2597SETRC does not require a thermal pad. Its DFN-6 package dissipates surge energy internally via the FET structure rather than through junction-to-case conduction. Layout guidelines specify connecting all GND pins (1–3) and IN pins (4–6) directly to copper planes using multiple vias - no thermal relief or exposed pad is needed for reliable 40A surge handling.
Can SC2597SETRC protect USB SuperSpeed differential pairs?
No, SC2597SETRC is not intended for USB SuperSpeed (TX/RX) lines. Its 175 pF junction capacitance would severely degrade signal integrity at 5+ Gbps. For those lines, Semtech recommends low-capacitance TVS devices like RClamp3371ZC (<0.25 pF). SC2597SETRC is optimized for VBUS, CC, SBU, and power-rail protection where bandwidth is not a constraint.
How does SC2597SETRC differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak current (VC = VBR + IPP × RDYN), SC2597SETRC maintains near-constant clamping (27.5–28V) from 24A to 40A due to its FET-based architecture and sub-20 mΩ dynamic resistance. This eliminates design uncertainty caused by temperature-dependent VBR drift and ensures predictable protection margins across operating conditions.
Is SC2597SETRC compatible with automated optical inspection (AOI) after reflow?
Yes, SC2597SETRC features laser-marked "T22" identification on the top surface and a flat, coplanar DFN-6 footprint with defined solder mask openings per Semtech's land pattern. Its 0.55mm profile and absence of undercut or recessed features ensure reliable AOI detection of solder joint quality, tombstoning, and placement accuracy in high-volume SMT lines.
SC2597SETRC 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:
- Not For New Designs
- Applications:
- LDO (Linear), DDR
- Voltage - Input:
- 1V ~ 3.6V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 1.8V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC, EDP
SC2597SETRC FAQ
1.How can I place an order for SC2597SETRC through Aetrix?
Please submit a Request for Quotation (RFQ) for SC2597SETRC 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 SC2597SETRC reliable?
The price and inventory of SC2597SETRC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC2597SETRC is usually 5 days.
3.What payment methods are accepted for SC2597SETRC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC2597SETRC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC2597SETRC?
SC2597SETRC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC2597SETRC 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 SC2597SETRC?
For technical support, including SC2597SETRC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC2597SETRC requirements.
6.How does Aetrix verify that SC2597SETRC is sourced from the original manufacturer or authorized distributors?
All SC2597SETRC 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 SC2597SETRC meets industry standards.
7.What is the process for return or replacement of SC2597SETRC?
All SC2597SETRC units undergo pre-shipment inspection (PSI). If there is an issue with SC2597SETRC, 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 SC2597SETRC part is unused and in its original packaging.
Return procedure for SC2597SETRC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC2597SETRC Tags
-
TPS51206DSQR
Texas Instruments
-
TPS51200DRCR
Texas Instruments
-
TPS51200DRCT
Texas Instruments
-
TPS62740DSSR
Texas Instruments
-
TPS51100DGQR
Texas Instruments
-
NCP51200MNTXG
onsemi
-
NCP51400MNTXG
onsemi
-
RT9026GSP
Richtek USA Inc.
-
LP2998MRX/NOPB
Texas Instruments
-
TPS51200QDRCRQ1
Texas Instruments
-
DPA423GN-TL
Power Integrations
-
LM10011SD/NOPB
Texas Instruments
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 …
