Microchip Technology MXDA3KP15CA

Overview

MXDA3KP15CA 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 (42 Ω, 12 Ω, and 2 Ω source impedances), ESD suppression per IEC61000-4-2, and EFT protection per IEC61000-4-4. It features a 15 V reverse standoff voltage (VWM), 16.7–18.5 V breakdown voltage (V(BR)), and clamps to ≤24.4 V at 123 A peak pulse current (IPP).

For engineers reviewing the MXDA3KP15CA datasheet, MXDA3KP15CA pinout, MXDA3KP15CA application, or MXDA3KP15CA equivalent, this device serves as a high-reliability, RoHS-compliant TVS for industrial power supplies, telecom interfaces, and automotive control modules requiring robust surge immunity with verified 3000 W 10/1000 µs pulse handling.

Technical Context

The MXDA3KP15CA operates as a bidirectional avalanche diode-based TVS, delivering sub-nanosecond response (<5 ns) to transients. Its clamping behavior is defined by a maximum VC of 24.4 V at IPP = 123 A under 10/1000 µs waveform, with VWM = 15 V ensuring compatibility with 12 V nominal systems.

It meets MIL-PRF-19500 screening options for high-reliability applications and supports secondary lightning protection across Class 1–4 per IEC61000-4-5 depending on source impedance - specifically Class 1–3 at 12 Ω and Class 1–4 at 42 Ω - while maintaining junction temperature range from –55 °C to +150 °C.

Key Specifications

Pinout & Package

MXDA3KP15CA uses a 2-pin surface-mount DO-214AB (SMC) package with cathode identification via dot marking. Polarity follows standard convention: Pin 1 is cathode, Pin 2 is anode.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ15CA and 1.5KE15CA, MXDA3KP15CA delivers identical 15 V standoff and bidirectional clamping in a surface-mount SMC package optimized for high-volume automated assembly, while sustaining full 3000 W surge rating - making it the preferred choice for new industrial and automotive designs requiring both performance and manufacturability.

Availability

MXDA3KP15CA is available at Aetrix Electronics and suitable for industrial power supplies, telecom infrastructure equipment, and automotive body control modules requiring stable component supply and long-term lifecycle support.

Supply support for MXDA3KP15CA 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 solutions for aerospace, defense, and industrial markets.

The MDA3KP series was developed to deliver military-grade transient suppression in commercial surface-mount packages, targeting applications where MIL-PRF-19500 screening, IEC61000-4-5 compliance, and 3000 W surge handling are mandatory design requirements.

FAQ

What is the clamping voltage of MXDA3KP15CA at its rated peak pulse current?

The MXDA3KP15CA has a maximum clamping voltage (VC) of 24.4 V when subjected to its rated peak pulse current (IPP) of 123 A under the standard 10/1000 µs waveform. This value is guaranteed across the full operating temperature range and ensures downstream circuitry remains within safe voltage limits during surge events. The MXDA3KP15CA achieves this performance using an optimized silicon die structure with controlled avalanche characteristics.

Is MXDA3KP15CA suitable for IEC61000-4-5 Class 4 surge testing?

Yes, MXDA3KP15CA is validated for IEC61000-4-5 Class 4 testing with a 42 Ω source impedance, supporting full 3000 W surge capability per the 10/1000 µs waveform. It also meets Class 1–3 requirements at 12 Ω and Class 2–4 at 2 Ω source impedances. The MXDA3KP15CA's specified VC and IPP values align directly with these test conditions as documented in Microsemi RF01243 Rev B.

Does MXDA3KP15CA have RoHS compliance certification?

Yes, MXDA3KP15CA carries the "e3" marking per Microsemi's nomenclature, indicating full RoHS compliance with lead-free matte-tin plating and halogen-free epoxy molding compound. This is confirmed in the "Part Nomenclature" section of RF01243 Rev B, and the device meets JEDEC J-STD-020B Level 1 moisture sensitivity without dry pack requirement.

What is the standoff voltage rating for MXDA3KP15CA, and how does it relate to system design?

MXDA3KP15CA has a rated reverse standoff voltage (VWM) of 15 V, meaning it remains non-conductive up to this DC or peak AC voltage across its terminals. In system design, this allows direct placement on 12 V nominal rails with margin for ripple and transients. The MXDA3KP15CA's VWM selection ensures minimal leakage (<2 µA) during normal operation while enabling rapid clamping above 16.7 V breakdown threshold.

Can MXDA3KP15CA be used in bidirectional AC signal paths?

Yes, MXDA3KP15CA is explicitly designed as a bidirectional TVS (denoted by the "C" suffix), making it suitable for AC-coupled or differential signal lines such as RS-485, CAN, or audio interfaces. Its symmetrical IV curve provides equal clamping in both polarities, and the MXDA3KP15CA maintains consistent VC and IPP performance regardless of voltage polarity applied across its terminals.