My Inquiry
My Account
Semtech Corporation SMS24C.TCT
- Part No.:
- SMS24C.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- SOT-23-6
- Datasheet:
-
SMS24C.TCT.pdf
- Description:
- TVS DIODE 24VWM 44VC SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,898
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SMS24C.TCT from Semtech is a transient diverting suppressor designed for high-energy EOS protection of 24V-rated power or I/O lines in USB PD, Type-C, and industrial interfaces. It features ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), 27.6V clamping at 40A, 20mΩ dynamic resistance, and operates from –40°C to +125°C.
For engineers reviewing the SMS24C.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability across temperature and current, low dynamic resistance for minimal voltage overshoot, DFN-6 footprint compatibility, and suitability for load switch input protection in 24V systems.
Technical Context
The SMS24C.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit when transient voltage exceeds breakdown. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.6V at both 24A and 40A-due to decreasing RDS(on) under surge conditions.
It delivers stable protection across –40°C to +125°C with <±0.5V clamping variation, supports unsymmetrical line surge testing per IEC 61000-4-5 (±1kV, 1.2/50μs), and maintains 175pF junction capacitance at 22V reverse bias-critical for minimizing signal distortion on protected lines.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 24V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or degradation |
| Clamping Voltage | 27.6V at 40A (8/20μs) - ensures downstream 24V-rated ICs (e.g., USB PD controllers, load switches) remain below absolute maximum ratings during surge |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial and USB PD applications |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds automotive and industrial ESD requirements without derating |
| Dynamic Resistance | 20mΩ - enables flat clamping response and minimizes VOS = IPP × RDYN overshoot during fast transients |
| Junction Capacitance | 175pF at 22V - low enough to avoid signal integrity impact on 10–100MHz bus lines (e.g., USB PD CC/SBU, industrial I/O) |
Pinout & Package
Package: DFN 1.6mm × 1.6mm × 0.55mm, 6-lead, RoHS-compliant, UL 94V-0 molding compound, lead-free finish.
| 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 (24V bus or I/O); 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 ≤0.4V from 24A to 40A-enables predictable protection margin without overdesigning downstream voltage tolerances |
| Temperature-stable clamping | Clamping remains within 27.5–28.0V from –40°C to +125°C-eliminates thermal derating calculations required for standard TVS diodes |
| Low dynamic resistance | 20mΩ RDYN reduces voltage overshoot during sub-microsecond transients-critical for protecting sensitive gate drivers and analog front-ends |
| High-energy EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz)-ensures robust operation in noisy industrial environments with repetitive burst noise |
Applications
| USB Type-C Power Delivery | Industrial Load Switch Input Protection |
|---|---|
Use Scenario: Protecting VBus lines in USB-C receptacles supporting up to 24V PD profiles (e.g., 20V@5A, 28V@3A). IC Role / Device Role / Timing Role: Primary EOS shunt device placed between connector and PD controller/load switch, clamping surges before they reach silicon. Use Value: Maintains 27.6V clamp at full 40A surge-prevents damage to 24V-rated PD controllers and avoids false overvoltage shutdowns during lightning-induced transients. |
Use Scenario: Input protection for industrial-grade load switches (e.g., TPS229xx, MPQ6530) powering sensors, actuators, or fieldbus nodes. IC Role / Device Role / Timing Role: Front-end transient diverter that limits voltage stress on the load switch's internal MOSFET drain-source junction. Use Value: Keeps clamping voltage below 28V across temperature-ensures safe operation even at 125°C ambient, where standard TVS devices exceed 35V clamp. |
| IoT Edge Node Power Bus | Robotic Actuator Control Interface |
Use Scenario: 24V DC power rail protection in battery-powered or PoE-powered IoT gateways with exposed connectors. IC Role / Device Role / Timing Role: Single-component solution replacing multi-stage TVS+MOV designs, reducing BOM count and PCB area. Use Value: 1.6mm × 1.6mm DFN footprint saves >60% board space vs. SOT-23 TVS alternatives while delivering higher surge rating. |
Use Scenario: Protection of motor driver enable/control lines exposed to inductive kickback and ESD in collaborative robots. IC Role / Device Role / Timing Role: Fast-acting shunt suppressor placed at connector entry point to prevent latch-up or gate oxide rupture in driver ICs. Use Value: 20mΩ RDYN ensures <10ns response to dV/dt >5V/ns-critical for suppressing fast-rising transients from brushed DC motor commutation. |
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 | 22V working voltage, 27.6V clamp at 40A, identical DFN-6 package and pinout | Optimized for 20–22V USB PD buses; lower working voltage reduces margin for 24V systems | Select SMS24C.TCT for 24V nominal rails; TDS2211P.C only if system max voltage is strictly ≤22V |
| uClamp2411ZA.TCT | 24V working voltage, but uses traditional TVS diode architecture-clamping rises to ~36V at 40A and increases with temperature | Suitable for cost-sensitive, lower-surge applications (<20A); lacks flat-clamp performance for critical 24V industrial use | Choose SMS24C.TCT where clamping stability across temperature/current is mandatory; uClamp2411ZA.TCT where BOM cost is primary constraint |
Compared with TDS2211P.C and uClamp2411ZA.TCT, SMS24C.TCT uniquely delivers 24V-rated flat-clamp performance-maintaining ≤27.6V from –40°C to +125°C and 24A to 40A-making it the only option for robust 24V industrial and USB PD 3.1 EPR interface protection without thermal or current derating.
Availability
SMS24C.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery, industrial load switch input protection, and IoT edge node power bus applications requiring stable component supply, long-term lifecycle support, and guaranteed surge performance across extended temperature ranges.
Supply support for SMS24C.TCT 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 ICs for precision sensing, protection, and signal integrity.
SMS24C.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) product line-engineered to replace conventional TVS diodes in high-reliability 24V industrial, automotive, and USB PD systems where clamping voltage stability across temperature and current is non-negotiable.
FAQ
What is the maximum continuous operating voltage for SMS24C.TCT?
The SMS24C.TCT has a reverse stand-off voltage (VRWM) of 24V, meaning it can continuously block up to 24V DC or RMS without significant leakage current. This makes it suitable for 24V nominal power rails and interfaces such as USB PD 3.1 Extended Power Range (EPR) and industrial 24V control buses. Exceeding 24V may cause premature conduction and accelerated wear.
How does SMS24C.TCT differ from standard TVS diodes in clamping behavior?
Unlike standard TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), SMS24C.TCT uses a triggered FET architecture that maintains near-constant clamping-27.6V at both 24A and 40A. Its dynamic resistance drops under surge, yielding flat VC across current and temperature-critical for protecting 24V-rated ICs without margin overdesign.
Is SMS24C.TCT pin-compatible with TDS2211P.C?
Yes-SMS24C.TCT shares the identical DFN 1.6mm × 1.6mm × 0.55mm 6-lead package and pin configuration (Pins 1–3 = GND, Pins 4–6 = IN) with TDS2211P.C. However, SMS24C.TCT is rated for 24V working voltage versus 22V, so direct substitution requires verification that system max voltage does not exceed 24V and that 27.6V clamping meets downstream IC voltage limits.
What is the junction capacitance of SMS24C.TCT, and why does it matter?
SMS24C.TCT exhibits 175pF junction capacitance at 22V reverse bias and 1MHz. This low value minimizes signal loading on protected lines-especially important for USB PD CC/SBU, industrial analog I/O, and digital control signals where excessive capacitance causes rise-time degradation or false triggering. It is significantly lower than many bidirectional TVS arrays targeting similar voltage classes.
Can SMS24C.TCT protect against IEC 61000-4-5 surge events?
Yes-SMS24C.TCT is rated for 40A peak pulse current (8/20μs) and ±1kV combination wave (1.2/50μs voltage, 8/20μs current, RS = 42Ω), satisfying IEC 61000-4-5 Level 4 immunity requirements. Its flat clamping ensures consistent protection margin across surge amplitude and ambient temperature-unlike TVS diodes whose clamping degrades above 85°C.
SMS24C.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- SOT-23-6
- Series:
- SMS
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 5
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 44V
- Current - Peak Pulse (10/1000µs):
- 8A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 60pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
SMS24C.TCT FAQ
1.How can I place an order for SMS24C.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for SMS24C.TCT 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 SMS24C.TCT reliable?
The price and inventory of SMS24C.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMS24C.TCT is usually 5 days.
3.What payment methods are accepted for SMS24C.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMS24C.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMS24C.TCT?
SMS24C.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMS24C.TCT 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 SMS24C.TCT?
For technical support, including SMS24C.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMS24C.TCT requirements.
6.How does Aetrix verify that SMS24C.TCT is sourced from the original manufacturer or authorized distributors?
All SMS24C.TCT 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 SMS24C.TCT meets industry standards.
7.What is the process for return or replacement of SMS24C.TCT?
All SMS24C.TCT units undergo pre-shipment inspection (PSI). If there is an issue with SMS24C.TCT, 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 SMS24C.TCT part is unused and in its original packaging.
Return procedure for SMS24C.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMS24C.TCT Tags
-
ESD9B5.0ST5G
onsemi
-
DESD3V3E1BL-7B
Diodes Incorporated
-
ESD5Z3.3T1G
onsemi
-
D5V0H1B2LP-7B
Diodes Incorporated
-
D5V0P1B2LP-7B
Diodes Incorporated
-
DESD5V0U1BA-7
Diodes Incorporated
-
ESD5Z5.0T1G
onsemi
-
DESD5V0U1BB-7
Diodes Incorporated
-
D12V0L1B2LP-7B
Diodes Incorporated
-
PESD2V0Y1BSFYL
Nexperia USA Inc.
-
DF2S5M4CT,L3F
Toshiba Semiconductor and Storage
-
D5V0L1B2WS-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 …
