My Inquiry
My Account
Semtech Corporation SC2603SKTRT
- Part No.:
- SC2603SKTRT
- Manufacturer:
- Semtech Corporation
- Category:
- DC DC Switching Controllers
- Package:
- SOT-23-6
- Datasheet:
-
SC2603SKTRT.pdf
- Description:
- IC REG CTRLR BOOST SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:3,276
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SC2603SKTRT 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 a stable 27.5–28V clamping voltage across full temperature range (−40°C to +125°C). It is used in USB Type-C PD input protection where low, temperature-invariant clamping prevents damage to downstream controllers.
For engineers reviewing the SC2603SKTRT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability under surge current and temperature, dynamic resistance (<20 mΩ), junction capacitance (175 pF), and DFN 1.6×1.6 mm 6-lead package compatibility with high-density USB PD layouts.
Technical Context
The SC2603SKTRT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under increasing surge current - not governed by fixed dynamic resistance.
It operates as a shunt device between protected line (pins 4–6) and ground (pins 1–3), with functional behavior defined by VBR ≈ 27.9V (typ), VRWM = 22V, and guaranteed clamping at 28V up to 40A. Its design eliminates thermal derating of surge capability over temperature, enabling robust protection in industrial and mobile environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus voltage and defines maximum continuous operating voltage without leakage degradation. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - ensures protected ICs (e.g., USB PD controllers) remain below absolute maximum ratings during worst-case surges. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity requirements for industrial and portable equipment inputs. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity standards without external shielding. |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - low enough to avoid signal integrity impact on 20V DC power rails while maintaining robust surge energy handling. |
| Dynamic Resistance | 20 mΩ (8/20μs) - enables near-constant clamping by minimizing IR drop increase under rising surge current. |
| Operating Temperature | −40°C to +125°C - supports deployment in extended-temperature industrial, automotive, and computing applications without derating. |
Pinout & Package
SC2603SKTRT is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with 6 leads and UL 94V-0 molding compound. All pins must be soldered for rated surge performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected to minimize inductance and maximize 40A capability. |
| Pins 4, 5, 6 | IN | Protected line input; tied together to distribute surge current across parallel paths and reduce trace inductance coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5 V from 24A to 40A surge - avoids overvoltage stress on sensitive PD controllers during multi-pulse events. |
| Temperature-stable protection | Clamping remains ≤28 V from −40°C to +125°C - eliminates need for thermal margining in thermally constrained enclosures. |
| Low dynamic resistance | 20 mΩ enables efficient shunting of 40A transients without significant voltage overshoot or localized heating. |
| High-energy EOS suppression | 1120 W peak pulse power rating supports repeated lightning-surge-level transients in industrial power inputs. |
| Space-optimized packaging | 1.6×1.6 mm DFN footprint saves >60% board area vs. SO-8 or SOT-23 TVS alternatives with comparable ratings. |
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: Shunt-based transient suppressor placed directly at connector to divert ESD/EFT/surge before reaching PD controller or load switch. Use Value: Maintains 28 V clamping at full 40A surge and 125°C ambient - prevents latch-up or gate oxide damage in USB PD controllers such as STUSB4500 or CYPD3177. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., TPS22990, MPQ5071) exposed to field wiring surges. IC Role / Device Role / Timing Role: Primary front-end protector that clamps transients below the FET's absolute maximum VDS rating to prevent catastrophic failure. Use Value: Enables use of lower-cost, smaller-footprint load switches by absorbing 1.2/50μs ±1kV surges (RS = 42Ω) without requiring upstream series impedance or derating. |
| IoT Edge Node Power Rail Protection | Notebook/Tablet DC Input Protection |
Use Scenario: Securing 12–24V DC input rails in battery-powered IoT gateways subjected to ESD during hot-plug or field maintenance. IC Role / Device Role / Timing Role: Solid-state EOS suppressor replacing Zener+TVS stacks to eliminate leakage drift and thermal runaway risks. Use Value: 130–600 nA reverse leakage at 22V ensures minimal standby current drain - critical for multi-year battery life in remote sensors. |
Use Scenario: Protecting 20V DC input stages in ultrabooks and tablets against accidental adapter misconnection or lightning-induced surges. IC Role / Device Role / Timing Role: High-reliability clamping device placed between barrel jack/USB-C port and main PMIC input. Use Value: 175 pF capacitance avoids resonance or filtering issues on 20V rail while delivering 40A surge handling - no additional LC filtering 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 1.6×1.6 mm package, identical marking (T22), and same tape-and-reel packaging (3,000 pcs/reel). | No functional difference; TDS2211P.C is the official Semtech orderable part number corresponding to SC2603SKTRT. | Select TDS2211P.C when sourcing directly from Semtech or authorized distributors for full traceability and warranty coverage. |
| SP1003-02HTG | Lower working voltage (12V), lower clamping (15.5V), 30A IPP, and SOD-323 package - lacks temperature-stable clamping and FET-based architecture. | Suitable only for 12V systems; cannot replace SC2603SKTRT in 20–22V USB PD or industrial 24V rails without redesign. | Consider SP1003-02HTG only for cost-sensitive 12V consumer applications where clamping stability and 40A surge are not required. |
Compared with TDS2211P.C (identical spec twin) and SP1003-02HTG (lower-voltage alternative), SC2603SKTRT offers unique temperature-invariant clamping and 40A surge capability in a 1.6 mm² footprint - making it irreplaceable for 22V industrial and USB PD designs demanding reliability over thermal range.
Availability
SC2603SKTRT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power rails requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/WEEE compliance.
Supply support for SC2603SKTRT 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.
SC2603SKTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-voltage, high-surge industrial and USB PD applications where clamping stability and thermal resilience are critical.
FAQ
What is the exact package type and dimensions of SC2603SKTRT?
SC2603SKTRT uses a DFN (Dual Flat No-lead) package measuring 1.6 mm × 1.6 mm × 0.55 mm with 6 leads. Pin 1 is marked by a laser dot; pins 1–3 are GND, and pins 4–6 are the protected input terminal. The package is Pb-free, halogen-free, and RoHS/WEEE compliant with UL 94V-0 flammability rating.
Does SC2603SKTRT require external bias or control signals to operate?
No, SC2603SKTRT is a fully passive, self-triggering device. It contains an integrated precision trigger circuit and surge-rated FET - no external power, enable pin, or configuration is needed. It activates automatically when transient voltage exceeds ~25V (VBR), shunting surge current to ground without any user intervention or timing constraints.
How does SC2603SKTRT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with surge current (VC = VBR + IPP × RDYN), SC2603SKTRT maintains clamping at 27.5–28 V from 24A to 40A due to its FET-based architecture and sub-20 mΩ dynamic resistance. This eliminates thermal derating and ensures consistent protection across temperature and current extremes.
Can SC2603SKTRT be used on high-speed data lines like USB SS or PCIe?
No, SC2603SKTRT is not suitable for high-speed data lines. Its 175 pF junction capacitance would severely degrade signal integrity on differential pairs operating above ~100 Mbps. It is intended exclusively for DC power rails or low-frequency I/O lines (e.g., USB PD VBus, CC, SBU, or load switch enable inputs), not superspeed lanes.
What is the maximum continuous operating voltage for SC2603SKTRT?
The maximum continuous operating (reverse stand-off) voltage for SC2603SKTRT is 22 V, as specified by VRWM. Operating above this voltage increases reverse leakage and risks premature triggering or accelerated degradation. It is rated for 22V systems including USB PD 3.0 (up to 20V nominal + 10% tolerance) and industrial 24V rails with appropriate derating.
SC2603SKTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- SOT-23-6
- 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):
- 5V ~ 16V
- Frequency - Switching:
- 200kHz
- Duty Cycle (Max):
- 95%
- Synchronous Rectifier:
- No
- Clock Sync:
- No
- Serial Interfaces:
- -
- Control Features:
- Enable, Soft Start
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
SC2603SKTRT FAQ
1.How can I place an order for SC2603SKTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC2603SKTRT 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 SC2603SKTRT reliable?
The price and inventory of SC2603SKTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC2603SKTRT is usually 5 days.
3.What payment methods are accepted for SC2603SKTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC2603SKTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC2603SKTRT?
SC2603SKTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC2603SKTRT 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 SC2603SKTRT?
For technical support, including SC2603SKTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC2603SKTRT requirements.
6.How does Aetrix verify that SC2603SKTRT is sourced from the original manufacturer or authorized distributors?
All SC2603SKTRT 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 SC2603SKTRT meets industry standards.
7.What is the process for return or replacement of SC2603SKTRT?
All SC2603SKTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC2603SKTRT, 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 SC2603SKTRT part is unused and in its original packaging.
Return procedure for SC2603SKTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC2603SKTRT Tags
-
UCC28C45DR
Texas Instruments
-
UCC28C40DR
Texas Instruments
-
UCC28C43DR
Texas Instruments
-
ZXSC410E6TA
Diodes Incorporated
-
LM3524DMX/NOPB
Texas Instruments
-
LM3489MMX/NOPB
Texas Instruments
-
MIC2102YML-TR
Microchip Technology
-
LM5148RGYR
Texas Instruments
-
TL598CDR
Texas Instruments
-
LM5155DSSR
Texas Instruments
-
LM25085MYX/NOPB
Texas Instruments
-
UCC2813DTR-0
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 …
