My Inquiry
My Account
Microchip Technology MXLDA3KP18CA
- Part No.:
- MXLDA3KP18CA
- Manufacturer:
- Microchip Technology
- Category:
- TVS Diodes
- Package:
- 16-SMD, Gull Wing
- Datasheet:
-
MXLDA3KP18CA.pdf
- Description:
- BI-DIRECTIONAL TVS_16L DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,654
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MXLDA3KP18CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array designed for high-reliability surge protection in industrial and aerospace systems. It features a 18 V standoff voltage (VWM), 20.0–22.1 V breakdown voltage (V(BR)), 29.2 V maximum clamping voltage at 102.8 A peak pulse current, and operates across –55 °C to +150 °C junction temperature.
For engineers reviewing the MXLDA3KP18CA datasheet, MXLDA3KP18CA pinout, MXLDA3KP18CA application, or MXLDA3KP18CA equivalent, this device supports IEC61000-4-2/4-4/4-5-compliant secondary lightning and ESD/EFT protection in telecom power interfaces, motor drive control inputs, and avionics signal lines where fast response (<5 ns) and high surge robustness are required.
Technical Context
The MXLDA3KP18CA is a surface-mount, bidirectional TVS diode array with dual-channel configuration in a single package. Its clamping action begins at 20.0 V minimum breakdown and limits transients to ≤29.2 V at 102.8 A (10/1000 µs waveform), enabling protection of downstream 18 V-rated ICs without overvoltage stress.
It delivers sub-5 ns response time, meets MIL-PRF-19500 screening options for high-reliability programs, and maintains <2 µA standby current at 18 V - critical for low-power sensor interface and battery-backed subsystems requiring minimal leakage under normal operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 18 V - Maximum continuous operating voltage before clamping initiates; matches 18 V rail systems. |
| V(BR) min/max | 20.0–22.1 V - Ensures reliable turn-on above nominal rail while avoiding false triggering during ripple or tolerance drift. |
| VC @ IPP | 29.2 V - Clamps 102.8 A surge to safe level for 18 V logic or analog front-ends. |
| PPP | 3000 W - Sustains high-energy transients per IEC61000-4-5 with 42 Ω source impedance (Class 1–4). |
| Response time | <5 ns - Faster than most MOVs or polymer-based protectors; preserves signal integrity in high-speed lines. |
| ID @ VWM | <2 µA - Minimizes quiescent power loss in always-on monitoring circuits. |
| TJ range | –55 °C to +150 °C - Supports operation in extended-temperature environments including engine bays and outdoor base stations. |
Pinout & Package
MXLDA3KP18CA uses a 3-pin TO-220AB-style vertical mount plastic package (case outline per RF01243, Page 6). Pin 1 (cathode) and Pin 3 (cathode) are symmetrically arranged with Pin 2 as common anode; polarity marked by dot on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Cathode (Channel A) | Connects to protected line A; reverse-biased during normal operation; conducts surge current to common anode during overvoltage. |
| Pin 2 | Common Anode | Reference node for both channels; ties to system ground or return path; carries combined surge current from both cathodes. |
| Pin 3 | Cathode (Channel B) | Connects to protected line B; identical function to Pin 1 for differential or dual-rail protection schemes. |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Protects AC-coupled or floating signal lines (e.g., RS-485, CAN bus) without polarity constraints. |
| MIL-PRF-19500 screening option | Enables qualification for defense/aerospace programs requiring lot traceability, burn-in, and parametric stability testing. |
| UL94V-0 epoxy case | Meets flammability requirements for enclosed industrial enclosures and airborne equipment housings. |
| Moisture sensitivity Level 1 | Eliminates dry-pack requirement and floor-life limitations - simplifies SMT assembly logistics. |
| 3σ lot norm on ID | Guarantees consistent leakage performance across production lots, reducing validation effort for low-power designs. |
Applications
| Industrial Motor Drive Inputs | Avionics Data Bus Protection |
|---|---|
Use Scenario: Protecting encoder feedback lines and digital I/O from switching transients generated by nearby IGBTs or contactors. IC Role / Device Role / Timing Role: Bidirectional TVS array clamping ±29.2 V surges on differential pairs while preserving signal edge integrity. Use Value: Prevents latch-up or damage to FPGA I/O banks and isolated gate drivers exposed to 102.8 A transients. | Use Scenario: Shielding ARINC 429 or MIL-STD-1553B data lines from induced RF and lightning-induced surges in aircraft wiring harnesses. IC Role / Device Role / Timing Role: Fast-response (<5 ns), low-leakage protector placed at connector entry point before line receiver ICs. Use Value: Maintains bit-error-rate compliance under IEC61000-4-5 Class 3 (12 Ω source) while adding <0.5 mm² footprint. |
| Telecom DC Power Feeds | Renewable Energy Controller Interfaces |
Use Scenario: Safeguarding 18 V auxiliary power rails feeding remote radio units or optical transceivers against load-dump and hot-swap events. IC Role / Device Role / Timing Role: Standoff-rated TVS absorbing up to 3000 W pulses without degradation, coordinated with upstream fusing. Use Value: Enables single-stage protection architecture instead of cascaded TVS+MOV, reducing BOM count and board space. | Use Scenario: Securing Modbus RTU or CAN FD communication ports on solar inverter controllers exposed to ground potential rise during lightning strikes. IC Role / Device Role / Timing Role: Dual-channel bidirectional suppressor handling common-mode and differential-mode transients simultaneously. Use Value: Achieves IEC61000-4-5 Class 4 compliance (42 Ω source) without external filtering components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMBJ18CA | 600 W PPP rating, SMC package, 29.2 V VC @ 21.2 A IPP - lower energy handling. | Suitable for consumer-grade or non-safety-critical 18 V interfaces with lower surge exposure. | Select when cost and board space are prioritized over MIL-spec reliability and 3 kW surge capability. |
| SMCJ18CA | 1500 W PPP rating, same SMC package, 29.2 V VC @ 51.7 A IPP - mid-tier energy capacity. | Fits industrial PLC I/O modules requiring moderate lightning immunity but not full Class 4 compliance. | Choose when derated operation (e.g., parallel devices) is acceptable and upscreening is unnecessary. |
Compared with SMBJ18CA and SMCJ18CA, MXLDA3KP18CA provides triple the peak pulse power (3000 W), verified MIL-PRF-19500 screening eligibility, and a vertically mounted TO-220AB package optimized for heatsinking - making it uniquely suited for high-reliability 18 V rail protection where thermal management and surge margin are critical.
Availability
MXLDA3KP18CA is available at Aetrix Electronics and suitable for industrial motor drives, avionics data buses, and telecom DC power feeds requiring stable component supply and long-term lifecycle support.
Supply support for MXLDA3KP18CA 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
Microsemi Corporation (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog and mixed-signal ICs, RF solutions, and radiation-hardened components.
The MDA3KP series was engineered for mission-critical surge protection in aerospace, defense, and industrial infrastructure - delivering certified 3000 W transient immunity with traceable manufacturing and extended temperature operation.
FAQ
What is the clamping voltage of MXLDA3KP18CA at its rated peak pulse current?
The MXLDA3KP18CA has a maximum clamping voltage (VC) of 29.2 V at its rated peak pulse current (IPP) of 102.8 A under 10/1000 µs waveform conditions. This value ensures protected downstream circuitry remains below destructive voltage thresholds during high-energy transients, and is validated per Figure 2 in the official RF01243 datasheet.
Is MXLDA3KP18CA unidirectional or bidirectional, and how is polarity identified?
MXLDA3KP18CA is a bidirectional TVS array, indicated by the "C" suffix in its nomenclature. Polarity is defined by a dot marking on the top surface of the package identifying Pin 1; odd-numbered pins (1 and 3) serve as cathodes for each channel, with Pin 2 as the common anode - confirmed in the "MECHANICAL and PACKAGING" section of RF01243 Rev B.
Does MXLDA3KP18CA meet any military or aerospace screening standards?
Yes, MXLDA3KP18CA supports optional upscreening per MIL-PRF-19500, including wafer fabrication and assembly lot traceability, 3σ lot norm screening on standby current (ID), and conformance inspections. Screening details are documented in Micronote 129, and the device's high-reliability construction aligns with aerospace and defense program requirements.
What is the maximum operating temperature range for MXLDA3KP18CA?
MXLDA3KP18CA operates across a junction temperature range of –55 °C to +150 °C, as specified in the "MAXIMUM RATINGS" table on page 2 of RF01243 Rev B. This extended range enables deployment in harsh environments such as engine control units, outdoor telecom cabinets, and avionics bays without thermal derating penalties up to 150 °C.
How does the moisture sensitivity level affect handling and assembly of MXLDA3KP18CA?
MXLDA3KP18CA is rated IPC/JEDEC J-STD-020B Moisture Sensitivity Level 1, meaning it requires no dry pack storage or floor-life tracking prior to reflow. This eliminates bake-out steps and simplifies SMT assembly logistics - a key advantage for high-mix, low-volume production of ruggedized electronics using the MXLDA3KP18CA.
MXLDA3KP18CA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Package/Case:
- 16-SMD, Gull Wing
- Series:
- MDA
- Packaging:
- Tube
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 8
- Voltage - Reverse Standoff (Typ):
- 18V
- Voltage - Breakdown (Min):
- 20V
- Voltage - Clamping (Max) @ Ipp:
- 29.2V
- Current - Peak Pulse (10/1000µs):
- 102.8A
- Power - Peak Pulse:
- 3000W (3kW)
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- -
MXLDA3KP18CA FAQ
1.How can I place an order for MXLDA3KP18CA through Aetrix?
Please submit a Request for Quotation (RFQ) for MXLDA3KP18CA 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 MXLDA3KP18CA reliable?
The price and inventory of MXLDA3KP18CA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXLDA3KP18CA is usually 5 days.
3.What payment methods are accepted for MXLDA3KP18CA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXLDA3KP18CA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXLDA3KP18CA?
MXLDA3KP18CA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXLDA3KP18CA 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 MXLDA3KP18CA?
For technical support, including MXLDA3KP18CA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXLDA3KP18CA requirements.
6.How does Aetrix verify that MXLDA3KP18CA is sourced from the original manufacturer or authorized distributors?
All MXLDA3KP18CA 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 MXLDA3KP18CA meets industry standards.
7.What is the process for return or replacement of MXLDA3KP18CA?
All MXLDA3KP18CA units undergo pre-shipment inspection (PSI). If there is an issue with MXLDA3KP18CA, 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 MXLDA3KP18CA part is unused and in its original packaging.
Return procedure for MXLDA3KP18CA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXLDA3KP18CA 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
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 …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
