Microchip Technology MXDA3KP24CAE3

Overview

MXDA3KP24CAE3 from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount DO-214AB package, designed for high-reliability secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance (Class 1–4), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient clamping. It features 24 V standoff voltage (VWM), 26.7–29.5 V breakdown range (V(BR)), 38.9 V max clamping voltage (VC) at 77.2 A IPP, and operates from –55 °C to +150 °C.

For engineers reviewing the MXDA3KP24CAE3 datasheet, MXDA3KP24CAE3 pinout, MXDA3KP24CAE3 application, or MXDA3KP24CAE3 equivalent, key selection criteria include bidirectional polarity, 3000 W peak pulse power rating at 10/1000 µs, RoHS-compliant matte-tin plating, MIL-PRF-19500 upscreening eligibility, and compatibility with industrial power supply input stages, telecom line interfaces, and automotive body control modules requiring robust overvoltage immunity.

Technical Context

The MXDA3KP24CAE3 implements a monolithic dual-diode architecture configured in back-to-back orientation to enable symmetrical bidirectional clamping. Its junction design delivers sub-5 ns response time and <100 ps turn-on delay, supporting fast transient suppression without signal distortion in AC-coupled lines.

It is rated for 3000 W peak pulse power under standardized 10/1000 µs waveform conditions, with full surge testing performed per unit and 3σ lot norm screening on standby current (ID). The device meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity and requires no dry pack handling.

Key Specifications

Pinout & Package

MXDA3KP24CAE3 is housed in a DO-214AB (SMC) plastic package with void-free thermosetting epoxy body (UL94V-0), matte-tin plated terminals, and polarity marked by a dot indicating Pin 1 (cathode of first diode). The device uses a dual-diode back-to-back configuration for bidirectional operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ24CA and SMCJ24CA, the MXDA3KP24CAE3 delivers double the pulse power capacity of SMCJ24CA and five times that of SMBJ24CA-enabling single-device compliance with IEC61000-4-5 Class 4 under 42 Ω source impedance, critical for infrastructure-grade equipment.

Availability

MXDA3KP24CAE3 is available at Aetrix Electronics and suitable for industrial power input protection, telecom line interface hardening, and automotive body control unit designs requiring stable component supply and long-term lifecycle support.

Supply support for MXDA3KP24CAE3 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 components for aerospace, defense, and industrial markets.

The MDA3KP series was developed to deliver military-grade transient suppression in commercial surface-mount packaging, targeting applications where MIL-PRF-19500 screening, wide temperature operation, and 3000 W surge capability are mandatory.

FAQ

What does the 'C' suffix in MXDA3KP24CAE3 indicate?

The 'C' suffix in MXDA3KP24CAE3 denotes bidirectional polarity-meaning the device contains two back-to-back Zener diodes to provide symmetrical clamping for AC signals or floating differential lines. This differs from unidirectional variants (e.g., MXDA3KP24AE3), which clamp only in reverse bias and require correct orientation in DC circuits. The MXDA3KP24CAE3 is therefore suitable for protecting Ethernet pairs, RS-485 buses, or transformer-coupled telecom lines without polarity concerns.

Is MXDA3KP24CAE3 RoHS compliant?

Yes, MXDA3KP24CAE3 is RoHS compliant, as confirmed by the 'e3' suffix in its full part number. This indicates annealed matte-tin terminal plating meeting EU Directive 2011/65/EU requirements. The device contains no lead, mercury, cadmium, hexavalent chromium, PBB, or PBDE above threshold limits, and is compatible with standard lead-free reflow profiles up to 260 °C for 10 seconds.

What is the maximum clamping voltage of MXDA3KP24CAE3 under surge conditions?

The maximum clamping voltage (VC) of MXDA3KP24CAE3 is 38.9 V when subjected to its rated peak pulse current (IPP) of 77.2 A under the standardized 10/1000 µs waveform. This value is guaranteed across temperature and represents the upper bound of voltage seen by downstream circuitry during worst-case surge events-critical for ensuring microcontrollers, sensors, or transceivers remain within their absolute maximum voltage ratings.

Can MXDA3KP24CAE3 be used for IEC61000-4-5 Class 4 lightning protection?

Yes, MXDA3KP24CAE3 is rated for IEC61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance, as documented in the manufacturer's application guidance. Its 3000 W peak pulse power rating and 38.9 V clamping voltage ensure compliance with the 4 kV open-circuit voltage requirement for Class 4, making it suitable for mains-connected industrial equipment and telecom infrastructure where highest immunity levels are mandated.

Does MXDA3KP24CAE3 require derating at elevated temperatures?

Yes, MXDA3KP24CAE3 requires thermal derating above 25 °C ambient, as shown in Figure 3 of its datasheet. At 100 °C case temperature, its peak pulse power rating drops to approximately 60% of the 25 °C value (i.e., ~1800 W), and at 125 °C, it falls to ~40% (~1200 W). Designers must apply this derating curve when deploying MXDA3KP24CAE3 in high-temperature environments such as engine compartments or sealed power enclosures.