Microchip Technology MXLDA3KP16CA

Overview

MXLDA3KP16CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount package, designed for secondary lightning protection per IEC61000-4-5 with 12 Ω and 42 Ω source impedances, ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient clamping. It features a 16 V standoff voltage (VWM), 17.8–19.7 V breakdown range (V(BR)), 26.0 V max clamping voltage (VC) at 115.4 A IPP, and operates from –55 °C to +150 °C.

For engineers reviewing the MXLDA3KP16CA datasheet, MXLDA3KP16CA pinout, MXLDA3KP16CA application, or MXLDA3KP16CA equivalent, this device serves as a high-reliability, RoHS-compliant TVS for telecom line cards, industrial PLC I/O modules, and automotive body control units requiring robust surge immunity without PCB layout changes for legacy MDA3KP designs.

Technical Context

The MXLDA3KP16CA is a bidirectional TVS diode array optimized for fast transient suppression in DC power rails and signal lines. Its sub-5 ns response time enables effective clamping of ESD events (IEC61000-4-2 ±8 kV contact), EFT bursts (IEC61000-4-4 ±2 kV), and lightning-induced surges (IEC61000-4-5 up to Class 4 with 42 Ω source).

It uses silicon avalanche technology with a thermoset epoxy package rated UL94V-0, supports 10/1000 μs waveform testing at full 3000 W, and includes wafer-level traceability and 3σ lot screening on standby current (ID ≤ 2 μA @ VWM).

Key Specifications

Pinout & Package

MXLDA3KP16CA is housed in a void-free transfer-molded thermosetting epoxy package (UL94V-0), marked with date code and part number, with polarity defined by a dot indicating Pin 1. Odd-numbered pins are cathodes per TVS element.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar transient voltage suppression applications.

Compared with SMBJ16CA and SMCJ16CA, MXLDA3KP16CA delivers 2× and 2× higher peak pulse power respectively, enabling compliance with stringent Class 4 lightning immunity requirements while maintaining identical 16 V standoff and bidirectional functionality-critical for infrastructure-grade reliability.

Availability

MXLDA3KP16CA is available at Aetrix Electronics and suitable for telecom line interface protection, industrial PLC analog input protection, and automotive body control module (BCM) designs requiring stable component supply and long-term lifecycle support.

Supply support for MXLDA3KP16CA 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, mixed-signal, and radiation-hardened components for aerospace, defense, and industrial markets.

The MDA3KP series was developed to deliver MIL-qualified transient protection for mission-critical systems where failure is not an option-emphasizing surge robustness, thermal stability, and full lot traceability from wafer to finished device.

FAQ

What is the clamping voltage of MXLDA3KP16CA at its rated peak pulse current?

The MXLDA3KP16CA has a maximum clamping voltage (VC) of 26.0 V at its rated peak pulse current (IPP) of 115.4 A under 10/1000 μs waveform conditions. This value is measured per Figure 2 in the RF01243 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The low VC ensures downstream 3.3 V or 5 V logic remains within safe operating limits even under full 3000 W transient stress.

Is MXLDA3KP16CA RoHS compliant and what does the 'e3' suffix indicate?

Yes, MXLDA3KP16CA is RoHS compliant, as confirmed by the 'e3' marking per the part nomenclature on page 2 of RF01243. The 'e3' designation indicates annealed matte-tin plating per J-STD-020B, with no lead content exceeding EU RoHS Directive limits. This ensures compatibility with lead-free reflow processes and meets environmental compliance requirements for global electronics manufacturing.

How does the bidirectional configuration of MXLDA3KP16CA affect its use in differential signal lines?

The bidirectional configuration of MXLDA3KP16CA allows it to protect differential pairs-such as RS-485 or CAN bus lines-without polarity concerns, as it clamps both positive and negative transients equally. Its internal back-to-back diode structure ensures symmetric voltage limiting across the line-to-line and line-to-ground paths, preserving signal integrity while suppressing common-mode and differential-mode surges up to 3000 W.

Can MXLDA3KP16CA be used in automotive applications requiring AEC-Q200 qualification?

MXLDA3KP16CA is not AEC-Q200 qualified out-of-the-box, but its –55 °C to +150 °C operating temperature range, MIL-PRF-19500 upscreening option, and proven performance in harsh environments make it suitable for automotive body control modules when supported by customer-specific qualification. For production deployment, users should perform system-level validation per AEC-Q200 test plan, leveraging MXLDA3KP16CA's thermal derating curve (Figure 3) and surge test history.

What is the standoff voltage (VWM) rating of MXLDA3KP16CA and how should it be selected in circuit design?

The MXLDA3KP16CA has a rated working standoff voltage (VWM) of 16 V, meaning it blocks up to 16 V DC or peak AC continuously without significant leakage. In circuit design, VWM must be ≥ the maximum normal operating voltage of the protected line-e.g., for a 12 V automotive rail, 16 V provides adequate margin against ripple and transients while minimizing unnecessary clamping. Selecting too high a VWM risks delayed response; too low increases standby current and power loss.