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Semtech Corporation LCDA24C-1.TCT
- Part No.:
- LCDA24C-1.TCT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
LCDA24C-1.TCT.pdf
- Description:
- TVS DIODE 24VWM 50VC SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,692
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Product details
Overview
LCDA24C-1.TCT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 24V-rated I/O or power lines in USB Type-C, USB PD, and industrial interfaces. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), constant 28V clamping voltage across full current and temperature range (−40°C to +125°C), and 175pF junction capacitance at 22V reverse bias.
For engineers reviewing the LCDA24C-1.TCT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping stability under surge stress, low dynamic resistance (<20mΩ), minimal temperature drift, DFN-6 package board-space efficiency, and compatibility with 24V bus protection in load-switch and USB PD controller circuits.
Technical Context
The LCDA24C-1.TCT uses a surge-rated FET as its primary protection element, activated by a precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant-27.5–28V-across 24A to 40A peak pulse currents due to decreasing RDS(on) under surge conditions.
It operates with a 24V reverse stand-off voltage (VRWM), 27.9V typical breakdown (VBR), and maintains stable performance from −40°C to +125°C ambient. Its 175pF capacitance at 1MHz and 22V bias supports high-speed data line integration without signal integrity degradation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reverse Stand-Off Voltage | 24 V - Maximum continuous operating voltage before triggering; matches 24V bus systems including USB PD extended power ranges. |
| Clamping Voltage (IPP = 40A) | 28 V - Stable voltage limit during worst-case 40A surge (8/20μs), protecting downstream ICs with 30V absolute max ratings. |
| Peak Pulse Current | 40 A - Withstands IEC 61000-4-5 Level 4 surges (±1kV, RS = 42Ω) and lightning-induced transients in industrial equipment. |
| ESD Withstand | ±30 kV - Meets IEC 61000-4-2 Contact/Air discharge requirements for rugged handheld and connector-facing applications. |
| Junction Capacitance | 175 pF - Low enough to avoid signal distortion on USB Type-C VBUS, CC, and SBU lines while enabling compact layout. |
| Dynamic Resistance | 20 mΩ - Enables flat clamping response and minimizes voltage overshoot during fast-rising transients (e.g., ESD). |
| Operating Temperature | −40°C to +125°C - Fully specified performance across automotive-grade and industrial ambient conditions without derating. |
Pinout & Package
LCDA24C-1.TCT is housed in a RoHS-compliant, halogen-free DFN-6 package measuring 1.6 mm × 1.6 mm × 0.55 mm with UL 94V-0 molding compound. The package features three dedicated ground terminals and three parallel input terminals for low-inductance, high-current surge path routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground connection points; all three must be soldered to maximize surge current handling and minimize parasitic inductance. |
| 4, 5, 6 | IN | Parallel-connected input terminals for protected bus (e.g., VBUS, load switch input); enables uniform current sharing and thermal distribution. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage stays within 27.5–28V from 24A to 40A surge current-eliminates design margin uncertainty vs. TVS diodes. |
| Temperature-stable protection | No clamping voltage drift across −40°C to +125°C, ensuring consistent protection in uncontrolled thermal environments. |
| Low dynamic resistance | 20 mΩ enables rapid shunt activation and limits transient overshoot during sub-100ns ESD events. |
| High-energy robustness | 1120 W peak pulse power rating supports repeated exposure to IEC 61000-4-5 surges without parametric shift. |
| Space-efficient packaging | 1.6 mm × 1.6 mm footprint saves >50% board area versus SO-8 or SOT-23 TVS alternatives while maintaining 6-terminal current capacity. |
Applications
| USB Type-C Power Delivery Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting 20–24V VBUS lines in USB Type-C receptacles supporting up to 100W PD negotiation. IC Role / Device Role / Timing Role: Primary EOS suppressor placed directly at the connector, clamping transients before they reach the PD controller or load switch. Use Value: Prevents damage to USB PD controllers (e.g., STUSB4500, TUSB7320) by limiting clamped voltage to ≤28V-well below their 30V absolute maximum ratings. |
Use Scenario: Safeguarding input pins of industrial-grade load switches (e.g., TPS22990, MPQ6535) exposed to field wiring surges. IC Role / Device Role / Timing Role: Shunt protector that diverts lightning-induced transients away from the load switch's internal FET gate oxide. Use Value: Extends system reliability by preventing gate-oxide rupture and latch-up in high-side switches operating at 24V nominal rails. |
| IoT Edge Node Power Bus Protection | Robotic Actuator Control Interface Protection |
|
Use Scenario: Securing 24V DC power inputs on battery-backed IoT gateways deployed in outdoor or factory-floor environments. IC Role / Device Role / Timing Role: Front-end transient suppressor for wide-input buck converters (e.g., LM5164, MP2451) accepting 9–36V input. Use Value: Maintains converter uptime by absorbing repetitive 40A surges without degradation-critical for remote, maintenance-limited deployments. |
Use Scenario: Shielding CAN/RS-485 transceiver power rails and motor driver enable lines in collaborative robot joints. IC Role / Device Role / Timing Role: High-energy clamp on 24V auxiliary supply lines feeding position feedback sensors and safety monitoring ICs. Use Value: Ensures functional safety compliance (IEC 61508 SIL2) by guaranteeing <28V transient excursion during EMC immunity testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TDS2211P | 22V VRWM, 28V clamping, same DFN-6 package and pinout | Optimized for 20–22V USB PD buses; lower working voltage than LCDA24C-1.TCT | Select when protecting 20V nominal systems where tighter clamping margin is required below 24V IC thresholds. |
| uClamp2411ZA | 24V VRWM, 33V clamping, SOD-323 package, 12A IPP | Lower surge rating and higher clamping; intended for CC/SBU lines, not main VBUS | Use only for low-energy signal-line protection; insufficient for 40A load-switch or VBUS protection. |
Compared with TDS2211P and uClamp2411ZA, LCDA24C-1.TCT uniquely combines 24V working voltage, 40A surge capability, and 28V clamping in a space-constrained DFN-6-making it the only drop-in solution for 24V industrial and USB PD VBUS protection requiring full IEC 61000-4-5 compliance.
Availability
LCDA24C-1.TCT is available at Aetrix Electronics and suitable for USB Type-C power delivery systems, industrial load-switch interfaces, and IoT edge node power buses requiring stable component supply, long-term lifecycle support, and guaranteed RoHS/REACH compliance.
Supply support for LCDA24C-1.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 connectivity.
The LCDA24C-1.TCT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability 24V industrial, computing, and USB infrastructure applications where clamping stability and temperature insensitivity are critical.
FAQ
What is the maximum continuous operating voltage for LCDA24C-1.TCT?
The LCDA24C-1.TCT has a reverse stand-off voltage (VRWM) of 24 V, meaning it can safely operate continuously at up to 24V DC without triggering. This makes LCDA24C-1.TCT ideal for 24V industrial power rails and extended-range USB PD implementations where nominal bus voltages reach 20–24V.
How does LCDA24C-1.TCT achieve constant clamping voltage across varying surge currents?
LCDA24C-1.TCT uses a surge-rated FET as its core protection element, controlled by a precision trigger circuit. As surge current increases, the FET's RDS(on) decreases, counteracting voltage rise-resulting in stable 27.5–28V clamping from 24A to 40A. This behavior is confirmed in the datasheet's clamping vs. IPP curves and differentiates LCDA24C-1.TCT from voltage-dependent TVS diodes.
Is LCDA24C-1.TCT pin-compatible with other Semtech TDS devices like TDS2211P?
Yes-LCDA24C-1.TCT shares the identical DFN-6 package outline, pin configuration (pins 1–3 = GND, pins 4–6 = IN), and land pattern with TDS2211P. Engineers may substitute LCDA24C-1.TCT for TDS2211P in existing layouts when upgrading from 22V to 24V system requirements, provided board-level thermal and routing constraints remain unchanged.
What is the junction capacitance of LCDA24C-1.TCT, and how does it affect USB Type-C designs?
LCDA24C-1.TCT exhibits 175 pF junction capacitance at 22V reverse bias and 1 MHz. This value is optimized for VBUS and CC line protection in USB Type-C: low enough to avoid disrupting PD communication timing or causing excessive insertion loss, yet high enough to provide robust energy absorption-unlike sub-0.5pF TVS devices reserved for SuperSpeed data lanes.
Does LCDA24C-1.TCT require a thermal pad or special PCB copper pour for surge dissipation?
No-LCDA24C-1.TCT dissipates surge energy primarily through its low-RDS(on) FET channel, not junction heating. The datasheet explicitly states no thermal pad is needed. Instead, designers should connect all six pins (GND pins 1–3 and IN pins 4–6) with short, wide traces and multiple vias to ground plane to minimize inductance-critical for preserving 40A surge performance.
LCDA24C-1.TCT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- TO-253-4, TO-253AA
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 2
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 24V (Max)
- Voltage - Breakdown (Min):
- 26.7V
- Voltage - Clamping (Max) @ Ipp:
- 50V
- Current - Peak Pulse (10/1000µs):
- 10A (8/20µs)
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 10pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143
LCDA24C-1.TCT FAQ
1.How can I place an order for LCDA24C-1.TCT through Aetrix?
Please submit a Request for Quotation (RFQ) for LCDA24C-1.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 LCDA24C-1.TCT reliable?
The price and inventory of LCDA24C-1.TCT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LCDA24C-1.TCT is usually 5 days.
3.What payment methods are accepted for LCDA24C-1.TCT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCDA24C-1.TCT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCDA24C-1.TCT?
LCDA24C-1.TCT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCDA24C-1.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 LCDA24C-1.TCT?
For technical support, including LCDA24C-1.TCT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCDA24C-1.TCT requirements.
6.How does Aetrix verify that LCDA24C-1.TCT is sourced from the original manufacturer or authorized distributors?
All LCDA24C-1.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 LCDA24C-1.TCT meets industry standards.
7.What is the process for return or replacement of LCDA24C-1.TCT?
All LCDA24C-1.TCT units undergo pre-shipment inspection (PSI). If there is an issue with LCDA24C-1.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 LCDA24C-1.TCT part is unused and in its original packaging.
Return procedure for LCDA24C-1.TCT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCDA24C-1.TCT Tags
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