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Semtech Corporation LCDA15.TBT
- Part No.:
- LCDA15.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LCDA15.TBT.pdf
- Description:
- TVS DIODE 15VWM 30VC 8-SO
- Quantity:
- Payment:
- Shipping:
Inventory:1,714
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Product details
Overview
LCDA15.TBT from Semtech is a Transient Diverting Suppressor (TDS) designed for high-energy EOS protection of 22V-rated power or I/O lines. It delivers ±30kV IEC 61000-4-2 ESD immunity, 40A peak pulse current (8/20μs), and a stable 27.5–28V clamping voltage across temperature and current range. It is used in USB Type-C PD input protection where precise clamping below controller damage thresholds is critical.
For engineers reviewing the LCDA15.TBT datasheet, pinout, applications, or equivalent options, key selection criteria include clamping voltage stability over 40A surge current, DFN-6 thermal and layout performance, low dynamic resistance (20 mΩ), and compatibility with industrial-grade 22V bus protection requirements.
Technical Context
The LCDA15.TBT uses a surge-rated FET as its primary protection element, activated by an integrated precision trigger circuit that senses overvoltage events. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge conditions - not fixed dynamic resistance.
It operates across –40°C to +125°C with <600 nA reverse leakage at 22V, 175 pF junction capacitance at 22V/1 MHz, and is rated for 1120 W peak pulse power. The device protects one line via three parallel input terminals (Pins 4–6) tied to three ground terminals (Pins 1–3) for low-inductance surge path routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22 V - matches nominal USB PD bus voltage and ensures reliable standoff without leakage-induced stress. |
| Clamping Voltage | 27.5–28 V at 40A (8/20μs) - stays within safe margin below typical 30V+ IC damage thresholds. |
| Peak Pulse Current | 40 A (8/20μs) - meets IEC 61000-4-5 Level 4 surge immunity for industrial equipment interfaces. |
| ESD Withstand | ±30 kV contact & air (IEC 61000-4-2) - exceeds Class 4 system-level ESD requirements for portable electronics. |
| Dynamic Resistance | 20 mΩ - enables minimal voltage rise during high-current transients, preserving clamping accuracy. |
| Junction Capacitance | 175 pF at 22 V, 1 MHz - suitable for DC/low-speed power-line protection; not intended for high-speed data lines. |
| Operating Temperature | –40°C to +125°C - supports deployment in automotive cabin, industrial control, and outdoor IoT environments. |
Pinout & Package
LCDA15.TBT 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 |
|---|---|---|
| Pins 1, 2, 3 | GND | Low-inductance ground return path; all three must be connected to maximize surge current handling and minimize ground bounce. |
| Pins 4, 5, 6 | IN | Parallel-connected input terminals for protected line; shared connection reduces trace inductance and improves transient response. |
Key Features
| Feature | Design Value |
|---|---|
| FET-based shunt architecture | Enables flat clamping voltage vs. current curve - avoids linear VC = VBR + IPP×RDYN drift seen in TVS diodes. |
| Stable clamping over temperature | 27.5–28 V maintained from –40°C to +125°C - eliminates derating uncertainty in thermally demanding applications. |
| Low dynamic resistance | 20 mΩ measured between 1A–40A - minimizes IR drop during surge, ensuring predictable voltage limiting. |
| High-energy surge rating | 1120 W peak pulse power (8/20μs) - supports robust protection against lightning-induced surges in industrial fieldbus nodes. |
| Ultra-low leakage | <600 nA at 22 V - prevents standby power loss and signal integrity degradation in always-on IoT sensor nodes. |
Applications
| USB Type-C Power Delivery Input Protection | Industrial Load Switch Input Protection |
|---|---|
|
Use Scenario: Protecting VBUS lines in USB-C ports supporting up to 20V/5A PD negotiation. IC Role / Device Role / Timing Role: Primary EOS suppressor placed directly at connector, diverting surges before reaching PD controller or load switch. Use Value: Maintains 27.5–28 V clamping across full 40A surge range - avoids overvoltage damage to 30V-rated controllers like STUSB4500 or TUSB7320. |
Use Scenario: Safeguarding enable and input pins of industrial-grade load switches (e.g., ON Semi NIS513x, TI TPS2594x) exposed to field wiring. IC Role / Device Role / Timing Role: Front-end transient clamp on VIN or EN inputs, preventing latch-up or gate oxide rupture during induced surges. Use Value: Clamps below 28 V while sustaining 40A pulses - keeps internal FET drain-source voltage within safe SOA limits during 1.2/50 μs combo-wave events. |
| IoT Edge Node Power Bus Protection | Tablet & Notebook 22V System Rail Protection |
|
Use Scenario: Securing 22V auxiliary rails powering cellular modems, GPS receivers, or motor drivers in battery-backed edge gateways. IC Role / Device Role / Timing Role: Single-device solution for DC power rail EOS hardening, replacing multi-component TVS+MOV stacks. Use Value: 1.6 mm × 1.6 mm footprint saves >60% board area versus SOD-123 or SMA packages - critical for compact PCBs with tight layer counts. |
Use Scenario: Protecting main system power rails (e.g., 22V buck converter outputs) in thin-and-light tablets and 2-in-1 notebooks. IC Role / Device Role / Timing Role: Standoff protector for high-side power distribution networks feeding SoC PMICs or display backlight drivers. Use Value: –40°C to +125°C operation ensures reliability during rapid thermal cycling in fanless designs - no clamping voltage drift at elevated junction temperatures. |
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 and DFN-6 package; differs only in tape-and-reel packaging (3,000 pcs/reel vs. unspecified for LCDA15.TBT). | Same use cases - USB-C PD, load switch, industrial 22V rail protection - with identical layout and thermal behavior. | Select TDS2211P.C when volume procurement and standard reel logistics are required; LCDA15.TBT may reflect alternate packaging or regional distribution variant. |
| uClamp2411ZA | 24 V working voltage, lower 24 A IPP rating, higher 30 V clamping, and smaller 0.65 mm × 0.65 mm DFN-2 package. | Better suited for CC/SBU lines in USB-C; insufficient for 40A VBUS protection due to lower surge rating and less stable clamping. | Use uClamp2411ZA only for auxiliary signaling lines; LCDA15.TBT remains mandatory for primary 22V power rail protection requiring 40A capability. |
Compared with TDS2211P.C, LCDA15.TBT offers identical protection performance but may differ in packaging logistics; versus uClamp2411ZA, LCDA15.TBT provides 67% higher surge current capacity and 2.5 V lower clamping - essential for safeguarding 22V power domains.
Availability
LCDA15.TBT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and 22V IoT power bus protection requiring stable component supply across extended temperature ranges and high-volume production cycles.
Supply support for LCDA15.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 high-performance analog and mixed-signal ICs for power management, protection, and signal integrity.
The LCDA15.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) product line, engineered to replace conventional TVS diodes in high-energy EOS applications where stable clamping voltage and temperature insensitivity are critical design requirements.
FAQ
What is the exact working voltage rating of LCDA15.TBT?
The LCDA15.TBT has a reverse stand-off voltage (VRWM) of 22 V, verified per datasheet Section 2 under Electrical Characteristics. This means it reliably blocks up to 22 V DC in normal operation while maintaining leakage below 600 nA - making it suitable for 22V power rails such as USB PD VBUS and industrial auxiliary supplies. The LCDA15.TBT is not rated for continuous operation above this voltage.
Does LCDA15.TBT support IEC 61000-4-5 surge testing at ±1 kV?
Yes, LCDA15.TBT is rated for ±1 kV (1.2/50 μs voltage, 8/20 μs current, RS = 42 Ω) per IEC 61000-4-5 for unsymmetrical lines, as confirmed in the Features section and Absolute Maximum Ratings table. Its 40 A peak pulse current capability (8/20 μs) and 27.5–28 V clamping ensure compliance with Level 3 and Level 4 industrial surge immunity requirements without derating.
How many pins does LCDA15.TBT have, and how are they assigned?
LCDA15.TBT uses a 6-pin DFN package with two functional groups: Pins 1–3 are dedicated GND terminals, and Pins 4–6 serve as parallel-connected IN terminals. All six pins must be soldered - splitting connections degrades surge current handling and increases parasitic inductance. Pin 1 is marked with a laser dot on the top surface per the Outline Drawing.
Can LCDA15.TBT be used on high-speed data lines like USB SuperSpeed or PCIe?
No, LCDA15.TBT is not suitable for high-speed data lines. Its 175 pF junction capacitance at 22 V is optimized for power and low-speed I/O protection, not signal integrity preservation. For USB SS, DP/DM, or PCIe lanes, Semtech recommends low-capacitance devices like RClamp3371ZC (<0.25 pF). LCDA15.TBT should only be applied to DC or low-frequency power rails and control signals.
What is the maximum operating temperature for LCDA15.TBT?
The LCDA15.TBT is specified for continuous operation from –40°C to +125°C ambient temperature, with junction temperature ratings extending to +150°C. Crucially, its clamping voltage remains stable across this full range - unlike TVS diodes whose VC rises with temperature. This makes LCDA15.TBT appropriate for under-hood automotive modules, industrial PLCs, and thermally constrained tablet designs.
LCDA15.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:
- 2
- Voltage - Reverse Standoff (Typ):
- 15V (Max)
- Voltage - Breakdown (Min):
- 16.7V
- Voltage - Clamping (Max) @ Ipp:
- 30V
- Current - Peak Pulse (10/1000µs):
- 5A (8/20µs)
- Power - Peak Pulse:
- 300W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- 5pF @ 1MHz
- Operating Temperature:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO
LCDA15.TBT FAQ
1.How can I place an order for LCDA15.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for LCDA15.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 LCDA15.TBT reliable?
The price and inventory of LCDA15.TBT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LCDA15.TBT is usually 5 days.
3.What payment methods are accepted for LCDA15.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCDA15.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCDA15.TBT?
LCDA15.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCDA15.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 LCDA15.TBT?
For technical support, including LCDA15.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCDA15.TBT requirements.
6.How does Aetrix verify that LCDA15.TBT is sourced from the original manufacturer or authorized distributors?
All LCDA15.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 LCDA15.TBT meets industry standards.
7.What is the process for return or replacement of LCDA15.TBT?
All LCDA15.TBT units undergo pre-shipment inspection (PSI). If there is an issue with LCDA15.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 LCDA15.TBT part is unused and in its original packaging.
Return procedure for LCDA15.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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