My Inquiry
My Account
Semtech Corporation LCDA15C-8.TBT
- Part No.:
- LCDA15C-8.TBT
- Manufacturer:
- Semtech Corporation
- Category:
- TVS Diodes
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LCDA15C-8.TBT.pdf
- Description:
- TVS DIODE 15VWM 33VC 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,698
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LCDA15C-8.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 stable 27.5–28V clamping across temperature and current range. Used in USB Type-C PD input protection and load switch front-end surge suppression.
For engineers reviewing the LCDA15C-8.TBT datasheet, pinout, applications, or equivalent options, this page provides verified electrical parameters, DFN-6 package layout guidance, clamping stability data across -40°C to +125°C, and direct alternatives for 22V bus protection in industrial and portable electronics.
Technical Context
The LCDA15C-8.TBT employs a surge-rated FET as its primary shunt element, activated by a precision trigger circuit upon detection of overvoltage transients. Unlike conventional TVS diodes, its clamping voltage remains nearly constant due to decreasing RDS(on) under surge conditions - not fixed dynamic resistance.
It operates with reverse stand-off voltage of 22V, breakdown at 25–27.9V, and exhibits 20mΩ dynamic resistance (8/20μs). Its 175pF junction capacitance at 22V/1MHz and <600nA leakage support low-interference protection in high-speed power rails without signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Working Voltage | 22V - matches nominal USB PD bus and industrial 24V rail tolerances without derating. |
| Clamping Voltage | 27.5–28V at 40A (8/20μs) - stays below 30V damage threshold of common load switches and PD controllers. |
| ESD Rating | ±30kV contact & air (IEC 61000-4-2) - exceeds Level 4 requirements for handheld and field-deployed equipment. |
| Peak Pulse Current | 40A (8/20μs) - satisfies IEC 61000-4-5 Level 3 (±1kV, RS=42Ω) for industrial port protection. |
| Junction Capacitance | 175pF at 22V/1MHz - low enough to avoid signal integrity impact on DC/low-frequency power lines. |
| Dynamic Resistance | 20mΩ (8/20μs) - enables flat clamping curve and minimal Vdrop during surge conduction. |
| Operating Temp | -40°C to +125°C - supports extended-range operation in automotive cabin, industrial control, and outdoor IoT enclosures. |
Pinout & Package
LCDA15C-8.TBT is housed in a RoHS-compliant DFN-6 package measuring 1.6mm × 1.6mm × 0.55mm with UL 94V-0 molding compound. The package features three dedicated ground terminals and three parallel input terminals for low-inductance transient path routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3 | GND | Common ground return for surge current; all three must be connected to minimize parasitic inductance and maximize 40A capability. |
| 4, 5, 6 | IN | Parallel-connected input node tied to protected line (e.g., VBUS); equal current sharing ensures thermal balance and full rated IPP. |
Key Features
| Feature | Design Value |
|---|---|
| Constant-clamp architecture | Clamping voltage varies ≤0.5V from 24A to 40A (8/20μs), eliminating design margin inflation needed with TVS diodes. |
| FET-based shunt topology | Surge energy dissipated via low-RDS(on) channel instead of PN-junction heating, enabling stable performance up to +125°C. |
| Low dynamic resistance | 20mΩ measured between 1A–40A ensures minimal IR drop and predictable voltage limiting during fast-rising surges. |
| High EFT immunity | ±4kV per IEC 61000-4-4 (5/50ns, 100kHz/5kHz) - protects against repetitive switching noise in motor drives and PLC I/O modules. |
| Space-optimized footprint | 1.6mm × 1.6mm DFN saves >60% board area vs. SO-8 or SOT-23 TVS solutions delivering comparable 40A rating. |
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 negotiation. IC Role / Device Role / Timing Role: Primary EOS shunt device placed immediately after connector, clamping transients before reaching PD controller IC. Use Value: Maintains 27.5–28V clamp across -40°C to +125°C, preventing false OVP trips and ensuring reliable PD handshake under thermal stress. |
Use Scenario: Shielding enable and input pins of high-side load switches (e.g., HS2950P) in remote meters and robotics. IC Role / Device Role / Timing Role: Surge diverter placed upstream of load switch input to limit voltage seen by internal FET gate oxide. Use Value: Prevents gate-oxide damage from lightning-induced surges by holding clamping voltage well below 30V absolute max rating. |
| IoT Device DC Power Rail Protection | Notebook/Tablet Main Power Input Protection |
|
Use Scenario: Securing 12–24V DC input rails in battery-powered edge sensors exposed to ESD during field servicing. IC Role / Device Role / Timing Role: Standalone transient suppressor on main power entry point, operating without external bias or control signals. Use Value: Delivers ±30kV ESD robustness and 40A surge handling in ultra-compact DFN-6, enabling sealed enclosure designs without ventilation compromises. |
Use Scenario: Safeguarding 19–20V adapter inputs in thin-and-light notebooks and tablets with limited PCB real estate. IC Role / Device Role / Timing Role: Low-capacitance (175pF), low-leakage (<600nA) protector minimizing standby power loss and ripple coupling. Use Value: Enables compliance with IEC 61000-4-5 Level 3 while maintaining <0.1% no-load current increase - critical for battery runtime certification. |
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 number variant. | No functional difference; used interchangeably in BOMs where tape-and-reel packaging (C-suffix) is specified. | Select TDS2211P.C when sourcing from standard distribution channels requiring reel packaging; LCDA15C-8.TBT may reflect OEM-specific marking or tray delivery. |
| SMAJ22A | Standard unidirectional TVS diode; 22V VRWM, 35.5V VC @ 12.3A; higher clamping, no constant-voltage behavior; 200pF capacitance. | Limited to lower-energy surges; clamping rises with temperature and current - unsuitable for high-temp or high-IPP industrial use. | Choose SMAJ22A only for cost-sensitive, non-critical 22V rails where 35.5V clamping is acceptable and ambient temperature stays <60°C. |
Compared with LCDA15C-8.TBT, TDS2211P.C offers identical protection performance and form factor, while SMAJ22A trades clamping stability and temperature resilience for lower unit cost - making LCDA15C-8.TBT the preferred choice for USB PD, industrial load switches, and thermally demanding IoT deployments.
Availability
LCDA15C-8.TBT is available at Aetrix Electronics and suitable for USB Type-C PD interfaces, industrial load switch inputs, and IoT device DC power rails requiring stable component supply with guaranteed EOS/ESD immunity.
Supply support for LCDA15C-8.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.
The LCDA15C-8.TBT belongs to Semtech's Transient Diverting Suppressor (TDS) family, engineered to replace conventional TVS diodes in high-reliability 22V power rail protection where stable clamping and wide-temperature operation are mandatory.
FAQ
What is the maximum clamping voltage of LCDA15C-8.TBT at 40A surge current?
The LCDA15C-8.TBT clamps at 27.6–28V under 40A peak pulse current (tp = 8/20μs), per IEC 61000-4-5 test conditions with 2Ω source impedance. This value is guaranteed across -40°C to +125°C and reflects its FET-based constant-clamp architecture - not a typical TVS diode's linear VC = VBR + IPP × RDYN relationship. The LCDA15C-8.TBT maintains this tight clamping window regardless of ambient temperature or surge magnitude within rating.
Is LCDA15C-8.TBT pin-compatible with standard TVS diodes in DFN-6 packages?
No - LCDA15C-8.TBT uses a unique 3-input / 3-ground pin configuration (pins 4–6 = IN, pins 1–3 = GND), unlike conventional unidirectional TVS diodes that typically use anode/cathode/gnd arrangements. Direct replacement requires PCB layout revision to accommodate parallel input and ground connections. The LCDA15C-8.TBT demands all six pins be routed as specified to achieve its rated 40A surge capability and low-inductance path.
Does LCDA15C-8.TBT require any external bias or control signals to operate?
No - LCDA15C-8.TBT is a fully passive, self-triggering device. Its internal precision trigger circuit activates the shunt FET automatically when transient voltage exceeds the breakdown threshold (~25–27.9V). There are no enable pins, bias resistors, or timing components required. The LCDA15C-8.TBT functions immediately upon connection to a 22V rail and ground, making it ideal for space-constrained and low-complexity protection schemes.
What is the junction capacitance of LCDA15C-8.TBT and how does it affect circuit performance?
The LCDA15C-8.TBT exhibits 175pF junction capacitance at 22V reverse bias and 1MHz frequency. This value is low enough to avoid significant filtering or loading on DC and low-frequency power rails (e.g., USB PD VBUS, industrial 24V supplies), but too high for high-speed data lines like USB SS or PCIe. Its capacitance remains stable across temperature and voltage, ensuring consistent protection behavior without signal distortion - a key advantage over higher-capacitance TVS alternatives.
Can LCDA15C-8.TBT be used for bidirectional transient protection?
No - LCDA15C-8.TBT is a unidirectional suppressor optimized for positive-going transients on 22V DC rails. Its functional diagram and electrical specifications (e.g., reverse stand-off voltage, forward voltage) confirm operation only from IN to GND. For bidirectional protection (e.g., AC lines or differential buses), separate devices or complementary topologies are required. The LCDA15C-8.TBT must be installed with correct polarity: IN pins toward the protected line, GND pins to system ground.
LCDA15C-8.TBT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Semtech Corporation
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 8
- 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:
- 16-SO
LCDA15C-8.TBT FAQ
1.How can I place an order for LCDA15C-8.TBT through Aetrix?
Please submit a Request for Quotation (RFQ) for LCDA15C-8.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-8.TBT reliable?
The price and inventory of LCDA15C-8.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-8.TBT is usually 5 days.
3.What payment methods are accepted for LCDA15C-8.TBT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LCDA15C-8.TBT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LCDA15C-8.TBT?
LCDA15C-8.TBT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LCDA15C-8.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-8.TBT?
For technical support, including LCDA15C-8.TBT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LCDA15C-8.TBT requirements.
6.How does Aetrix verify that LCDA15C-8.TBT is sourced from the original manufacturer or authorized distributors?
All LCDA15C-8.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-8.TBT meets industry standards.
7.What is the process for return or replacement of LCDA15C-8.TBT?
All LCDA15C-8.TBT units undergo pre-shipment inspection (PSI). If there is an issue with LCDA15C-8.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-8.TBT part is unused and in its original packaging.
Return procedure for LCDA15C-8.TBT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LCDA15C-8.TBT 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 …
