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Semtech Corporation LCDA15C-6.TBT
- Part No.:
- LCDA15C-6.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LCDA15C-6.TBT.pdf
- Description:
- TVS DIODE 15VWM 33VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,082
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Product details
Overview
LCDA15C-6.TBT 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 175pF junction capacitance - deployed in USB Type-C PD input protection and industrial load switch front-end circuits.
For engineers reviewing the LCDA15C-6.TBT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, DFN-6 package layout guidance, real-world clamping stability data across temperature and current, and validated alternatives for 22V bus protection in high-reliability embedded and USB PD systems.
Technical Context
The LCDA15C-6.TBT 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 the FET's ultra-low dynamic resistance (20mΩ).
Unlike conventional TVS diodes, LCDA15C-6.TBT maintains stable clamping across −40°C to +125°C operating temperature and exhibits minimal voltage rise with increasing ambient temperature - critical for industrial and automotive-grade power rail protection where thermal derating compromises standard TVS performance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - defines maximum continuous DC or RMS operating voltage on protected line without leakage or degradation. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs + 1.2/50μs combo wave) - ensures downstream 24V-rated ICs (e.g., USB PD controllers, load switches) remain below damage threshold during surge events. |
| Peak Pulse Current | 40A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment and USB PD power inputs. |
| ESD Withstand | ±30kV contact & air (IEC 61000-4-2) - exceeds Class 4 ESD requirements for handheld and exposed connector interfaces. |
| Junction Capacitance | 175pF at 22V, 1MHz - low enough for 22V power rail protection without signal integrity impact; not suitable for high-speed data lines. |
| Dynamic Resistance | 20mΩ - enables flat clamping curve; reduces voltage overshoot under fast-rising transients compared to TVS diodes with fixed RDYN. |
Pinout & Package
LCDA15C-6.TBT is housed in a RoHS-compliant, halogen-free DFN package measuring 1.6mm × 1.6mm × 0.55mm with wettable flank terminations. The compact footprint saves >50% board area versus SO-8 or SOT-23 TVS solutions while supporting high-current PCB routing via three parallel GND and three parallel IN terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pins 1, 2, 3 | GND | Common ground return path for surge current; all three must be connected with low-inductance vias to internal ground plane for full 40A rating. |
| Pins 4, 5, 6 | IN | Protected line input (e.g., VBUS, load switch input); all three pins are internally tied and must be routed together to minimize impedance imbalance during surge conduction. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies <0.5V from 24A to 40A - eliminates need for oversized TVS to meet low-VC at max IPP. |
| Temperature-stable protection | Clamping remains 27.5–28V from −40°C to +125°C - removes thermal derating uncertainty in industrial enclosures or automotive under-hood environments. |
| Low dynamic resistance | 20mΩ FET-based conduction path - minimizes I×R voltage drop during surge, enabling tighter clamping than silicon avalanche diodes. |
| High-energy surge handling | 1120W peak pulse power (8/20μs) - supports repeated lightning-induced surges per IEC 61000-4-5 without parametric shift. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Front-End Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C receptacles supporting up to 20V/5A PD profiles against ESD, lightning surges, and hot-plug transients. IC Role / Device Role / Timing Role: Primary EOS shunt device placed immediately after the connector, clamping transients before they reach the PD controller or buck converter. Use Value: Maintains 27.5V clamping at 40A and 125°C - prevents overvoltage damage to 24V-rated PD controllers (e.g., STUSB4500, CYPD3177) where standard TVS would exceed 35V at elevated temperature. |
Use Scenario: Safeguarding the input of high-side load switches (e.g., HS2950P, TPS22990) in remote meters, robotics, and IoT gateways exposed to field-installed wiring surges. IC Role / Device Role / Timing Role: First-line transient diverter upstream of the load switch FET, limiting drain-source voltage during surge to prevent gate oxide rupture or avalanche failure. Use Value: 20mΩ dynamic resistance ensures <1V additional drop during 40A surge - keeps VDS within safe SOA limits of integrated load switches rated for 30V absolute max. |
| 22V Industrial Power Rail Protection | Tablet/Notebook DC Input Stage Protection |
|
Use Scenario: Securing 22V nominal DC power inputs in programmable logic controllers (PLCs), motor drives, and factory automation modules subject to long cable runs and inductive switching noise. IC Role / Device Role / Timing Role: Standalone transient suppressor replacing multi-stage TVS+MOV solutions on main power entry points. Use Value: Single-device 40A surge capability and ±30kV ESD rating eliminate need for external series impedance or secondary clamping - simplifies BOM and layout while meeting IEC 61000-4-4/5 compliance. |
Use Scenario: Protecting 20V-class USB-C charging inputs in thin-client tablets and 2-in-1 notebooks where board space and thermal constraints limit traditional TVS options. IC Role / Device Role / Timing Role: Compact, low-profile EOS protector mounted adjacent to the USB-C port, minimizing trace inductance to maximize high-frequency ESD suppression. Use Value: 1.6mm × 1.6mm DFN footprint fits within tight connector keepouts; 0.55mm height avoids interference with flex cables or stacked batteries. |
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 (T22), and shared Semtech qualification - functionally identical part with alternate suffix per tape/reel packaging convention. | No functional difference; used interchangeably in production for USB-C PD and industrial power rails. | Select TDS2211P.C when sourcing from authorized distributors requiring standard reel packaging (3,000 pcs/reel, 7″ reel). |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A (8/20μs); higher clamping, no temperature stability, 500W PPPK. | Limited to lower-energy surges; unsuitable for 40A/1120W events or high-temp operation where clamping rises above 38V at 125°C. | Choose SMAJ22A only for cost-sensitive, non-critical 22V lines with <15A surge exposure and ambient <85°C. |
Compared with LCDA15C-6.TBT, TDS2211P.C offers identical protection performance and drop-in compatibility, while SMAJ22A provides lower-cost but thermally derated clamping - making LCDA15C-6.TBT the only option for robust 40A/125°C industrial or USB PD designs requiring flat VC behavior.
Availability
LCDA15C-6.TBT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V power rail protection requiring stable component supply, long-term lifecycle assurance, and compliance with IEC 61000-4-2/4-4/4-5 standards.
Supply support for LCDA15C-6.TBT 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 - with leadership in transient suppression, LoRa® wireless, and signal integrity solutions.
LCDA15C-6.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-reliability 22V power and interface protection where stable clamping, temperature resilience, and high surge endurance are mandatory.
FAQ
What is the maximum continuous operating voltage for LCDA15C-6.TBT?
The LCDA15C-6.TBT has a reverse stand-off voltage (VRWM) of 22V, meaning it can continuously block up to 22V DC or RMS without significant leakage. This makes LCDA15C-6.TBT suitable for 20V USB PD VBUS lines and 22V industrial power rails where sustained voltage stress occurs between surge events.
Does LCDA15C-6.TBT require external bias or control signals to operate?
No, LCDA15C-6.TBT is a fully passive, self-triggering device. It contains an integrated precision trigger circuit and surge-rated FET - no external power, enable pins, or configuration are needed. LCDA15C-6.TBT activates automatically when transient voltage exceeds its breakdown threshold, making it ideal for always-on protection in battery-backed or unmanaged systems.
How does LCDA15C-6.TBT differ from standard TVS diodes in clamping behavior?
Unlike TVS diodes whose clamping voltage rises linearly with peak pulse current (VC = VBR + IPP × RDYN), LCDA15C-6.TBT uses a FET-based shunt that maintains near-constant clamping (27.5–28V) from 24A to 40A. This eliminates design margin uncertainty - LCDA15C-6.TBT guarantees sub-28V clamping even at full 40A surge, regardless of temperature.
Can LCDA15C-6.TBT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, LCDA15C-6.TBT is not suitable for high-speed data lines. Its 175pF junction capacitance would severely degrade signal integrity on differential pairs operating above ~100MHz. LCDA15C-6.TBT is intended exclusively for 22V power rails and low-speed I/O lines; for USB SS/DP/DM protection, Semtech recommends RClamp3371ZC (<0.25pF) instead of LCDA15C-6.TBT.
What PCB layout practices maximize LCDA15C-6.TBT's 40A surge performance?
To achieve full 40A rating, route Pins 4–6 (IN) as a single low-inductance trace directly from the connector, and connect Pins 1–3 (GND) to a solid internal ground plane using ≥3 vias per pin. Place LCDA15C-6.TBT within 5mm of the protected connector, avoid right-angle traces, and ensure symmetric copper pour around the DFN body - these steps minimize parasitic inductance that could elevate clamping voltage during fast transients.
LCDA15C-6.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 6
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 33V
- Current - Peak Pulse (10/1000µs):
- 15A (8/20µs)
- Power - Peak Pulse:
- 500W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 8pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LCDA15C-6.TBT FAQ
1.How can I place an order for LCDA15C-6.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for LCDA15C-6.TBT 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 LCDA15C-6.TBT reliable?
The price and inventory of LCDA15C-6.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LCDA15C-6.TBT is usually 5 days.
3.What payment methods are accepted for LCDA15C-6.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCDA15C-6.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCDA15C-6.TBT?
LCDA15C-6.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCDA15C-6.TBT 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 LCDA15C-6.TBT?
For technical support, including LCDA15C-6.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCDA15C-6.TBT requirements.
6.How does Aetrix verify that LCDA15C-6.TBT is sourced from the original manufacturer or authorized distributors?
All LCDA15C-6.TBT 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 LCDA15C-6.TBT meets industry standards.
7.What is the process for return or replacement of LCDA15C-6.TBT?
All LCDA15C-6.TBT units undergo pre-shipment inspection (PSI). If there is an issue with LCDA15C-6.TBT, 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 LCDA15C-6.TBT part is unused and in its original packaging.
Return procedure for LCDA15C-6.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCDA15C-6.TBT Tags
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