My Inquiry
My Account
Semtech Corporation SC441TETRT
- Part No.:
- SC441TETRT
- Manufacturer:
- Semtech Corporation
- Category:
- LED Drivers
- Package:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Datasheet:
-
SC441TETRT.pdf
- Description:
- IC LED DRVR RGLTR PWM 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,306
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SC441TETRT 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), and stable 27.5–28V clamping across temperature and current range - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the SC441TETRT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping behavior under surge conditions, and direct alternatives for 22V bus protection in compact, thermally robust designs.
Technical Context
The SC441TETRT 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. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to low dynamic resistance (20 mΩ) and decreasing RDS(on) with increasing current.
It operates across –40°C to +125°C, maintains ≤600 nA reverse leakage at 22V, and delivers 1120W peak pulse power (8/20μs). Its functional architecture enables stable protection for USB PD buses up to 22V while avoiding thermal derating limitations typical of junction-based TVS devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus and industrial 24V rail systems without derating. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - stays within safe margin below 30V IC damage thresholds. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds USB IF and IEC 61000-4-2 Class 4 requirements. |
| Dynamic Resistance | 20 mΩ - ensures minimal voltage rise during high-current transients, enabling consistent clamping. |
| Junction Capacitance | 175 pF at 22V/1 MHz - suitable for DC power and low-speed signal line protection (e.g., CC/SBU, VBus). |
| Operating Temperature | –40°C to +125°C - supports extended-range industrial and automotive under-hood environments. |
Pinout & Package
SC441TETRT is housed in a Pb-free, RoHS-compliant DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with exposed thermal pad (no solder mask defined per datasheet). All six terminals must be connected for full 40A surge rating: pins 1–3 are dedicated GND, pins 4–6 serve as parallel-connected input terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | Ground | Low-inductance return path for surge current; all three must be vias-connected to internal ground plane. |
| 4, 5, 6 | Input (Protected Line) | Parallel-connected anode-side terminals; connect directly to VBus or protected line near connector. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5 V across 1–40A (8/20μs), eliminating thermal runaway risk in high-temp operation. |
| FET-based shunt topology | Surge energy dissipated in low-RDS(on) channel instead of PN junction - no junction heating or derating needed. |
| Ultra-low dynamic resistance | 20 mΩ measured between 1A–40A enables predictable voltage drop and precise system-level surge margining. |
| High-temperature stability | Clamping remains flat from –40°C to +125°C - critical for industrial equipment operating in uncontrolled ambient. |
| Compact DFN footprint | 1.6 mm × 1.6 mm saves >60% board area vs. SO-8 TVS solutions while maintaining 40A rating. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–22V VBus lines in USB-C receptacles against lightning-induced surges and hot-plug ESD. IC Role / Device Role / Timing Role: Primary front-end EOS suppressor placed immediately after the connector, before the PD controller and load switch. Use Value: Maintains 27.5–28V clamping at 40A and 125°C - avoids overvoltage damage to downstream SiP controllers rated ≤30V. |
Use Scenario: Safeguarding enable and input pins of industrial-grade e-fuses (e.g., HS2950P) against 1kV/42Ω surges per IEC 61000-4-5. IC Role / Device Role / Timing Role: Low-impedance shunt clamp that limits transient voltage before it reaches the load switch's internal FET gate oxide. Use Value: Prevents gate oxide breakdown and latch-up in high-side switches by holding clamped voltage below 28V across full temperature range. |
| IoT Edge Node Power Bus Protection | Storage Device 24V Rail Protection |
|
Use Scenario: Securing 22V auxiliary rails in battery-backed IoT gateways exposed to field ESD and induced surges. IC Role / Device Role / Timing Role: Single-device solution replacing multi-stage TVS+MOV networks on compact PCBs with limited layer count. Use Value: Delivers 40A surge handling in 2.56 mm² footprint with no thermal pad required - simplifies layout and reduces BOM count. |
Use Scenario: Protecting SATA or NVMe storage enclosures with 24V auxiliary supplies against conducted surges from shared power backplanes. IC Role / Device Role / Timing Role: Standoff-rated suppressor placed at power entry point to absorb fast-rising transients before reaching DC-DC regulators. Use Value: 175 pF capacitance avoids signal integrity issues on adjacent high-speed traces while providing robust 22V rail clamping. |
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; manufactured by Semtech as direct variant. | No functional difference - used interchangeably in USB-C and industrial designs per Semtech ordering docs. | Select when requiring traceable Semtech lot history or specific tape-and-reel packaging (3,000 pcs/reel). |
| uClamp2411ZA.TCT | 24V working voltage, lower 24A IPP rating, 12 pF capacitance - optimized for CC/SBU lines, not VBus. | Not suitable for 22V power rail protection; intended for low-capacitance data-line clamping only. | Choose only for secondary signal-line protection alongside SC441TETRT - never as direct replacement for power-line duty. |
Compared with SC441TETRT, TDS2211P.C offers identical performance and form factor with documented Semtech traceability, while uClamp2411ZA.TCT serves a different application tier (signal vs. power) and cannot replace SC441TETRT in 22V bus protection roles.
Availability
SC441TETRT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT edge node power bus protection requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for SC441TETRT 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.
SC441TETRT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace traditional TVS diodes in high-reliability 22V power rail protection where stable clamping and temperature insensitivity are mandatory.
FAQ
What is the exact package type and dimensions of SC441TETRT?
SC441TETRT uses a 6-pin DFN package measuring 1.6 mm × 1.6 mm × 0.55 mm with no thermal pad requirement. Pins 1–3 are GND; pins 4–6 are parallel-connected input terminals. The land pattern follows Semtech's recommended outline with 0.5 mm pitch and 0.3 mm pad width.
Does SC441TETRT meet IEC 61000-4-5 surge immunity standards?
Yes, SC441TETRT is rated for 40A peak pulse current (8/20μs waveform) and withstands ±1kV combination wave (1.2/50μs voltage, 8/20μs current, RS = 42Ω), satisfying IEC 61000-4-5 Level 4 for industrial environments. Its clamping voltage remains ≤28V under these conditions.
How does SC441TETRT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with current (VC = VBR + IPP × RDYN), SC441TETRT uses a triggered FET shunt that maintains ~27.5–28V clamping from 1A to 40A and across –40°C to +125°C - eliminating thermal derating concerns.
Can SC441TETRT be used on USB-C SuperSpeed differential pairs?
No, SC441TETRT is not suitable for USB-C SuperSpeed (TX/RX) lines due to its 175 pF capacitance, which would severely degrade signal integrity. For those lines, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25 pF); SC441TETRT is intended for VBus, CC, and SBU lines only.
What is the maximum continuous reverse leakage current for SC441TETRT at 22V?
At VRWM = 22V and TA = 25°C, SC441TETRT exhibits a maximum reverse leakage current of 600 nA. This value increases with temperature but remains well below 1 μA across its full –40°C to +125°C operating range, ensuring minimal standby power loss.
SC441TETRT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width) Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- DC DC Regulator
- Topology:
- Step-Up (Boost)
- Internal Switch(s):
- Yes
- Number of Outputs:
- 4
- Voltage - Supply (Min):
- 4.5V
- Voltage - Supply (Max):
- 21V
- Voltage - Output:
- 36V
- Current - Output / Channel:
- 150mA
- Frequency:
- 800kHz
- Dimming:
- Analog, PWM
- Applications:
- Backlight
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-TSSOP-EP
SC441TETRT FAQ
1.How can I place an order for SC441TETRT through Aetrix?
Please submit a Request for Quotation (RFQ) for SC441TETRT 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 SC441TETRT reliable?
The price and inventory of SC441TETRT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SC441TETRT is usually 5 days.
3.What payment methods are accepted for SC441TETRT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SC441TETRT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SC441TETRT?
SC441TETRT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SC441TETRT 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 SC441TETRT?
For technical support, including SC441TETRT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SC441TETRT requirements.
6.How does Aetrix verify that SC441TETRT is sourced from the original manufacturer or authorized distributors?
All SC441TETRT 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 SC441TETRT meets industry standards.
7.What is the process for return or replacement of SC441TETRT?
All SC441TETRT units undergo pre-shipment inspection (PSI). If there is an issue with SC441TETRT, 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 SC441TETRT part is unused and in its original packaging.
Return procedure for SC441TETRT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SC441TETRT Tags
-
BCR402RE6327HTSA1
Infineon Technologies
-
BCR430UXTSA2
Infineon Technologies
-
BCR420UE6433HTMA1
Infineon Technologies
-
BCR420UE6327HTSA1
Infineon Technologies
-
BCR421UE6327HTSA1
Infineon Technologies
-
LYT1604D-TL
Power Integrations
-
HV9910CLG-G
Microchip Technology
-
CL2N8-G
Microchip Technology
-
BCR420UW6-7
Diodes Incorporated
-
BCR421UW6-7
Diodes Incorporated
-
BCR420UFD-7
Diodes Incorporated
-
BCR421UFD-7
Diodes Incorporated
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 …
