My Inquiry
My Account
Semtech Corporation SC417MLTRT
- Part No.:
- SC417MLTRT
- Manufacturer:
- Semtech Corporation
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
SC417MLTRT.pdf
- Description:
- IC REG DL BUCK/LNR SYNC 32MLPQ
- Quantity:
- Payment:
- Shipping:
Inventory:1,585
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SC417MLTRT from Semtech is a Transient Diverting Suppressor designed for high-energy EOS protection on 22V power or I/O lines, featuring ±30kV IEC 61000-4-2 ESD immunity, 40A (8/20μs) peak pulse current handling, and stable 27.5–28V clamping voltage across temperature and current range; used in USB Type-C PD input protection and load switch front-end surge suppression.
For engineers reviewing the SC417MLTRT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world USB PD and industrial load-switch protection use cases, and validated alternative parts with documented functional trade-offs.
Technical Context
The SC417MLTRT 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 threshold. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to low dynamic resistance (20 mΩ) and decreasing RDS(on) under surge conditions.
It operates over –40°C to +125°C, maintains ≤600 nA reverse leakage at 22V, and delivers stable 27.5–28V clamping at both 24A and 40A (1.2/50μs + 8/20μs combination waveform), with junction capacitance of 175 pF at 22V and 1 MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - Maximum continuous DC bus voltage the device safely blocks without conduction. |
| Clamping Voltage | 27.5–28 V at 40A - Limits transient voltage seen by downstream ICs (e.g., USB PD controllers) to safe levels during 8/20μs surges. |
| Peak Pulse Current | 40 A (8/20μs) - Withstands industrial-level lightning-induced surges per IEC 61000-4-5. |
| ESD Withstand | ±30 kV contact & air - Meets highest IEC 61000-4-2 level for system-level ESD robustness. |
| Dynamic Resistance | 20 mΩ - Enables flat clamping response and minimizes voltage rise with increasing surge current. |
| Junction Capacitance | 175 pF at 22V - Low enough for 22V power rail protection without signal integrity impact on adjacent traces. |
| Operating Temperature | –40°C to +125°C - Supports deployment in industrial and automotive under-hood environments. |
Pinout & Package
SC417MLTRT is housed in a Pb-free, RoHS-compliant DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with six terminals and UL 94V-0 molding compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground connection points - all three must be soldered to maximize surge current path and minimize parasitic inductance. |
| 4, 5, 6 | IN | Protected line input - connects directly to VBus or power rail; all three pins conduct surge current in parallel to ground. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28 V from 24A to 40A surge - avoids overvoltage stress on sensitive PD controllers at high current. |
| FET-based shunt topology | Replaces traditional TVS junctions with low-RDS(on) MOSFET - dissipates energy externally and enables stable thermal performance across temperature. |
| High EFT immunity | Withstands ±4 kV burst noise per IEC 61000-4-4 - protects against repetitive switching transients in motor drives and industrial PLCs. |
| Low leakage at operating voltage | ≤600 nA at 22 V - prevents measurable power loss or bias shift in always-on 22V systems like IoT gateways. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting the VBus line of a USB Type-C port supporting up to 20V PD negotiation against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed between connector and PD controller or load switch. Use Value: Maintains clamping below 28 V across –40°C to +125°C, ensuring PD controller reliability without derating for temperature. | Use Scenario: Shielding the input of industrial-grade load switches (e.g., HS2950P) from EOS events in remote meters, robotics, and factory automation equipment. IC Role / Device Role / Timing Role: Surge diverter that limits voltage across the load switch's internal FET drain-source during transients. Use Value: Prevents FET avalanche failure by clamping to 28 V - enabling use of smaller, lower-cost load switches without sacrificing surge robustness. |
| IoT Edge Device Power Rail Protection | Storage Device 22V Bus Protection |
Use Scenario: Securing the main 22V supply rail of battery-backed IoT gateways exposed to field ESD and induced surges via long cables or metal enclosures. IC Role / Device Role / Timing Role: Single-device, low-footprint solution replacing multi-component TVS+RC networks for compact edge nodes. Use Value: 1.6 mm × 1.6 mm DFN footprint saves >60% board area versus discrete TVS alternatives while delivering higher IPP rating. | Use Scenario: Safeguarding 22V auxiliary rails in NVMe SSD enclosures or enterprise storage backplanes subject to hot-swap and cable discharge events. IC Role / Device Role / Timing Role: High-reliability clamping element placed at board edge before power distribution network. Use Value: 175 pF capacitance avoids resonance issues with fast-switching regulators feeding storage controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | Same die, identical electrical specs and package - direct manufacturer-recommended replacement for SC417MLTRT. | No functional difference; used interchangeably in Semtech reference designs for USB PD and load switch protection. | Select when sourcing from Semtech-authorized channels with full traceability and lifecycle support. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A - higher clamping, no constant-voltage behavior, 10× higher dynamic resistance. | Limited to lower-energy transients; unsuitable for 40A surges or high-temperature operation where clamping drift exceeds safe margins. | Acceptable only for cost-sensitive, non-critical 22V rails with <20A surge requirements and ambient <85°C. |
Compared with TDS2211P and SMAJ22A, SC417MLTRT delivers identical protection performance to TDS2211P but may differ in tape-and-reel packaging or date-code marking; versus SMAJ22A, it provides 40A surge capability and thermally stable clamping - critical for USB PD and industrial load switches.
Availability
SC417MLTRT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V IoT power rail protection requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for SC417MLTRT 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.
SC417MLTRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection applications demanding stable clamping and wide temperature operation.
FAQ
What is the maximum continuous operating voltage for SC417MLTRT?
The SC417MLTRT has a reverse stand-off voltage (VRWM) of 22 V, meaning it reliably blocks voltages up to 22 V DC in normal operation without significant leakage. This makes SC417MLTRT ideal for protecting 22V power rails such as those found in USB PD 3.0 implementations and industrial 24V nominal systems operating at reduced voltage levels.
How does SC417MLTRT achieve stable clamping voltage across varying surge currents?
SC417MLTRT uses a surge-rated FET activated by an integrated precision trigger circuit. As surge current increases, the FET's RDS(on) decreases, maintaining clamping voltage near the trigger circuit's breakdown voltage. This results in SC417MLTRT delivering 27.5–28 V clamping at both 24A and 40A - unlike TVS diodes whose clamping rises linearly with current.
Can SC417MLTRT be used for USB Type-C CC line protection?
No - SC417MLTRT is rated for 22V working voltage and optimized for high-current power rail protection, not low-voltage data lines. For CC/SBU line protection in USB Type-C, Semtech recommends uClamp2411ZA (24V, low-capacitance). SC417MLTRT should be applied only to VBus or power delivery input paths, not differential signaling or control lines.
What is the recommended PCB layout for SC417MLTRT to ensure optimal surge performance?
Place SC417MLTRT as close as possible to the protected connector. Connect all three IN pins (4, 5, 6) via a single short, wide trace to the protected line, and tie all three GND pins (1, 2, 3) directly to a solid ground plane using multiple vias. Avoid thermal relief on GND pads - SC417MLTRT dissipates energy internally, not through a thermal pad.
Is SC417MLTRT compliant with RoHS and halogen-free standards?
Yes - SC417MLTRT features Pb-free terminations, halogen-free molding compound, and complies with RoHS and WEEE directives. Its package meets UL 94V-0 flammability rating, and marking includes date code and "T22" identifier per Semtech's standard DFN-6 marking convention.
SC417MLTRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- EcoSpeed®, SmartDrive™
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 1MHz
- Voltage/Current - Output 1:
- Adj, 10A
- Voltage/Current - Output 2:
- 5V, 200mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 3V ~ 28V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-MLPQ (5x5)
SC417MLTRT FAQ
1.How can I place an order for SC417MLTRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC417MLTRT 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 SC417MLTRT reliable?
The price and inventory of SC417MLTRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC417MLTRT is usually 5 days.
3.What payment methods are accepted for SC417MLTRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC417MLTRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC417MLTRT?
SC417MLTRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC417MLTRT 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 SC417MLTRT?
For technical support, including SC417MLTRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC417MLTRT requirements.
6.How does Aetrix verify that SC417MLTRT is sourced from the original manufacturer or authorized distributors?
All SC417MLTRT 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 SC417MLTRT meets industry standards.
7.What is the process for return or replacement of SC417MLTRT?
All SC417MLTRT units undergo pre-shipment inspection (PSI). If there is an issue with SC417MLTRT, 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 SC417MLTRT part is unused and in its original packaging.
Return procedure for SC417MLTRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC417MLTRT Tags
-
TPS6521905RHBR
Texas Instruments
-
MIC3385YHL-TR
Microchip Technology
-
A4402ELPTR-T
Allegro MicroSystems
-
LM26480SQ-AA/NOPB
Texas Instruments
-
A4402KLPTR-T
Allegro MicroSystems
-
BD71847AMWV-E2
ROHM Semiconductor
-
ADP5040ACPZ-1-R7
Analog Devices Inc.
-
LT3048IDC#TRPBF
Analog Devices Inc.
-
ADP5037ACPZ-R7
Analog Devices Inc.
-
XRP7714ILB-F
MaxLinear, Inc.
-
LTC3260EDE#TRPBF
Analog Devices Inc.
-
LTC3260EMSE#PBF
Analog Devices Inc.
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 …
