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Semtech Corporation SC603IMLTRT
- Part No.:
- SC603IMLTRT
- Manufacturer:
- Semtech Corporation
- Category:
- LED Drivers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
SC603IMLTRT.pdf
- Description:
- IC LED DRIVER RGLTR 200MA 10MLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,760
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Product details
Overview
SC603IMLTRT 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 - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SC603IMLTRT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping stability across temperature and current, and validated alternatives for 22V bus protection in high-reliability embedded and power delivery systems.
Technical Context
The SC603IMLTRT 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 (27.5–28V) from 24A to 40A due to decreasing RDS(on) under surge conditions.
Unlike conventional TVS diodes, SC603IMLTRT maintains stable clamping across −40°C to +125°C and exhibits low 175pF junction capacitance at 22V reverse bias - critical for minimizing signal distortion on high-speed power rails while delivering robust 1120W peak pulse power handling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC operating voltage on protected line without leakage degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo waveform) - ensures downstream 24V-rated ICs (e.g., USB PD controllers) remain below damage threshold during surge. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 industrial surge immunity requirements with RS = 2Ω source impedance. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD immunity standards for connector-facing protection. |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes VCLAMP rise under increasing IPP, unlike TVS diodes with fixed RDYN. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough to avoid signal integrity impact on 20V USB PD bus, yet higher than sub-1pF data-line TVS devices. |
| Operating Temp | −40°C to +125°C - supports deployment in extended-temperature industrial and automotive under-hood applications. |
Pinout & Package
SC603IMLTRT is housed in a RoHS-compliant, halogen-free DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed thermal pad (no internal thermal pad required; energy dissipated in silicon).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return path for surge current; all three pins must be connected to maximize current sharing and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input (e.g., VBUS in USB-C); parallel connection of all three pins ensures full 40A rating and uniform current distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5V from 24A to 40A - eliminates need for over-spec'ing IPP to meet VCLAMP limits. |
| Temperature-stable protection | Clamping remains 27.5–28V across −40°C to +125°C - removes derating uncertainty in thermally demanding environments. |
| FET-based surge conduction | Shunt FET with sub-0.1Ω RDS(on) replaces PN-junction avalanche - avoids thermal runaway and enables repeatable high-current operation. |
| Low-leakage design | 600nA max reverse leakage at 22V - prevents measurable power loss in always-on 22V supply rails. |
| Compact DFN footprint | 1.6mm × 1.6mm area - saves >60% board space vs. SO-8 or SOT-23 TVS solutions rated for equivalent 40A surge. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20V–22V VBUS lines in USB-C receptacles against lightning-induced surges and connector ESD during hot-plug events. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed immediately after the connector, before the USB PD controller and load switch. Use Value: Maintains 27.5V clamping at 40A and 125°C - keeps PD controller gate oxide and internal FETs within safe operating voltage, avoiding field failures. |
Use Scenario: Safeguarding input terminals of industrial-grade load switches (e.g., HS2950P) in remote meters, robotics, and programmable logic controllers. IC Role / Device Role / Timing Role: High-energy transient shunt that clamps fast-rising surges before they reach the load switch's integrated MOSFET drain. Use Value: Prevents catastrophic failure of the load switch's internal FET by limiting transient voltage to ≤28V - eliminating need for oversized external TVS or redundant protection stages. |
| IoT Edge Node Power Bus Protection | Storage Device 22V Rail Protection |
|
Use Scenario: Securing 22V auxiliary power inputs in battery-backed IoT gateways exposed to outdoor EFT and conducted surges via long cables. IC Role / Device Role / Timing Role: Single-component, low-capacitance surge diverter on main system rail, coordinated with upstream fuse and downstream LDO. Use Value: Delivers 4kV EFT immunity (IEC 61000-4-4) and 40A surge handling without degrading 22V rail regulation or inducing latch-up in PMICs. |
Use Scenario: Protecting 22V backup or auxiliary supplies in NVMe SSD enclosures and enterprise storage backplanes subject to hot-swap transients. IC Role / Device Role / Timing Role: Standalone EOS suppressor on non-data power lines (e.g., 22V VPP or auxiliary bias), decoupled from high-speed signal paths. Use Value: Enables compact, single-chip protection with no signal integrity compromise - unlike high-capacitance TVS arrays that would distort 16Gbps PCIe signaling on adjacent traces. |
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 (T22XX), and shared Semtech datasheet - confirmed drop-in replacement per Semtech ordering documentation. | No functional difference; used interchangeably in USB-C and industrial designs where tape-and-reel packaging matches production requirements. | Select TDS2211P.C when sourcing from authorized Semtech distributors with standard 3,000-unit reels; SC603IMLTRT is functionally identical but may reflect alternate logistics channel or date-code batch. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A (not 40A); higher clamping, fixed RDYN, no temperature stability guarantee. | Limited to lower-energy surges; unsuitable for IEC 61000-4-5 Level 4 or sustained 40A events; requires derating above 85°C. | Use SMAJ22A only for cost-sensitive, low-risk consumer applications where 40A surge immunity and −40°C to +125°C clamping stability are not required. |
Compared with SC603IMLTRT, TDS2211P.C offers identical performance and form factor with standardized reel packaging, while SMAJ22A provides basic TVS protection at lower cost but fails to deliver the flat clamping, 40A rating, or wide-temperature reliability needed for industrial USB PD and load switch protection.
Availability
SC603IMLTRT is available at Aetrix Electronics and suitable for USB Type-C power delivery interfaces, industrial load switch front-ends, and IoT edge node 22V power bus protection requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for SC603IMLTRT 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, and signal integrity.
SC603IMLTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered specifically to replace conventional TVS diodes in high-energy, wide-temperature industrial and USB PD applications where stable clamping is mission-critical.
FAQ
What is the exact package type and dimensions of SC603IMLTRT?
SC603IMLTRT uses a 6-pin DFN package measuring 1.6mm × 1.6mm × 0.55mm with exposed pad (no thermal pad required). Pin 1 is marked by a laser dot; pins 1–3 are GND, and pins 4–6 are IN. The land pattern follows Semtech's recommended 0.30mm pad width and 0.50mm pitch layout to ensure optimal surge current sharing and low-inductance grounding.
Does SC603IMLTRT require external components for basic operation?
No, SC603IMLTRT operates as a standalone device with no external bias, timing, or control components required. It activates autonomously when transient voltage exceeds its trigger threshold. However, PCB layout is critical: all three GND pins (1–3) and all three IN pins (4–6) must be shorted together with low-inductance traces and multiple vias to ground plane to achieve rated 40A performance.
How does SC603IMLTRT differ from standard TVS diodes like SMAJ22A in clamping behavior?
SC603IMLTRT uses a triggered FET architecture that maintains 27.5–28V clamping from 24A to 40A and across −40°C to +125°C. In contrast, SMAJ22A - a conventional TVS - exhibits rising clamping (e.g., ~35.5V at 12.3A) and significant temperature drift, making it unreliable for high-current, high-temperature industrial use cases where SC603IMLTRT delivers predictable, flat-voltage protection.
Can SC603IMLTRT protect bidirectional data lines such as USB CC or DP/DM?
No, SC603IMLTRT is designed exclusively for unidirectional 22V power or I/O line protection (e.g., VBUS, load switch input). Its 175pF capacitance and architecture are unsuitable for high-speed differential data lines. For CC/SBU or DP/DM protection, Semtech recommends low-capacitance devices like uClamp2411ZA or RClamp3371ZC - not SC603IMLTRT.
Is SC603IMLTRT compliant with RoHS, REACH, and halogen-free standards?
Yes, SC603IMLTRT is Pb-free, halogen-free, and fully compliant with RoHS Directive 2011/65/EU and WEEE Directive 2012/19/EU. Its molding compound meets UL 94V-0 flammability rating, and lead finish is 100% matte tin - confirmed in Semtech's official datasheet Rev 2.5 and material declarations.
SC603IMLTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Switched Capacitor (Charge Pump)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 1
- Voltage - Supply (Min):
- 2.5V
- Voltage - Supply (Max):
- 6.5V
- Voltage - Output:
- 4.275V ~ 4.725V
- Current - Output / Channel:
- 200mA
- Frequency:
- 625kHz
- Dimming:
- -
- Applications:
- Backlight
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MLP (3x3)
SC603IMLTRT FAQ
1.How can I place an order for SC603IMLTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC603IMLTRT 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 SC603IMLTRT reliable?
The price and inventory of SC603IMLTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC603IMLTRT is usually 5 days.
3.What payment methods are accepted for SC603IMLTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC603IMLTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC603IMLTRT?
SC603IMLTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC603IMLTRT 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 SC603IMLTRT?
For technical support, including SC603IMLTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC603IMLTRT requirements.
6.How does Aetrix verify that SC603IMLTRT is sourced from the original manufacturer or authorized distributors?
All SC603IMLTRT 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 SC603IMLTRT meets industry standards.
7.What is the process for return or replacement of SC603IMLTRT?
All SC603IMLTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC603IMLTRT, 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 SC603IMLTRT part is unused and in its original packaging.
Return procedure for SC603IMLTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC603IMLTRT Tags
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