Microchip Technology MXDA3KP33CAE3

Overview

MXDA3KP33CAE3 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 and ESD protection. It features a 33 V reverse standoff voltage (VWM), 36.7–40.6 V breakdown voltage (V(BR)), 53.3 V maximum clamping voltage (VC) at 56.2 A peak pulse current, and operates from −55 °C to +150 °C.

For engineers reviewing the MXDA3KP33CAE3 datasheet, MXDA3KP33CAE3 pinout, MXDA3KP33CAE3 application, or MXDA3KP33CAE3 equivalent, this device serves as a RoHS-compliant, MIL-PRF-19500 upscreenable TVS for IEC 61000-4-2/4-4/4-5-compliant surge protection in telecom power interfaces, industrial control inputs, and automotive body electronics.

Technical Context

The MXDA3KP33CAE3 is a bidirectional TVS diode array optimized for fast transient suppression with sub-5 ns response time and <100 ps turn-on latency. Its silicon avalanche structure delivers precise clamping under 10/1000 µs surges up to 3000 W while maintaining low leakage (<2 µA at 33 V) and stable V(BR) tolerance (±5%).

It supports secondary lightning protection per IEC 61000-4-5 across Class 1–4 with 42 Ω, 12 Ω, and 2 Ω source impedances, and meets moisture sensitivity Level 1 (J-STD-020B) without dry pack requirements - enabling direct reflow assembly in high-volume production.

Key Specifications

Pinout & Package

MXDA3KP33CAE3 is housed in a DO-214AB (SMC) plastic package with void-free UL94V-0 epoxy body, matte-tin-plated terminals, and polarity marked by a dot indicating Pin 1 (cathode for unidirectional variants; symmetric bidirectional configuration here). Weight ≈5 g.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ33CA and SMCJ33CA, MXDA3KP33CAE3 delivers double the surge energy handling of SMCJ33CA and five times that of SMBJ33CA - making it the only option among the three qualified for Class 4 secondary lightning protection per IEC 61000-4-5 with 42 Ω source impedance.

Availability

MXDA3KP33CAE3 is available at Aetrix Electronics and suitable for telecom infrastructure power inputs, industrial PLC analog I/O modules, and automotive body control units requiring stable component supply and long-term lifecycle support.

Supply support for MXDA3KP33CAE3 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 discrete protection devices.

The MDA3KP series was developed for mission-critical surge protection in aerospace, defense, and industrial systems - emphasizing MIL-PRF-19500 compliance, wide temperature operation, and repeatable clamping performance under extreme transients.

FAQ

What is the clamping voltage of MXDA3KP33CAE3 at its rated peak pulse current?

The MXDA3KP33CAE3 has a maximum clamping voltage (VC) of 53.3 V at 56.2 A peak pulse current (IPP), measured under 10/1000 µs waveform conditions. This value ensures protected circuits remain below critical overvoltage thresholds during high-energy transients, and is guaranteed across the full operating temperature range of −55 °C to +150 °C. The MXDA3KP33CAE3 achieves this with minimal voltage overshoot due to its fast avalanche response.

Is MXDA3KP33CAE3 RoHS compliant and what does the 'e3' suffix indicate?

Yes, MXDA3KP33CAE3 is RoHS compliant, as confirmed by the 'e3' suffix in its part number per Microsemi's nomenclature guide. The 'e3' designation specifies annealed matte-tin plating on terminals and full compliance with EU Directive 2011/65/EU, including lead content <1000 ppm. This enables compatibility with lead-free reflow processes and meets environmental requirements for global electronics manufacturing without derating or qualification changes.

How does the bidirectional configuration of MXDA3KP33CAE3 affect its circuit placement?

The bidirectional configuration of MXDA3KP33CAE3 means both terminals are functionally identical - there is no anode/cathode distinction, eliminating polarity concerns during PCB layout or automated assembly. It can be placed across any two nodes requiring symmetrical overvoltage protection, such as line-to-line in AC circuits or differential data pairs. This simplifies design reuse and reduces BOM complexity compared to unidirectional TVS arrays like MXDA3KP33AE3.

Can MXDA3KP33CAE3 be used for IEC 61000-4-5 Class 4 lightning protection?

Yes, MXDA3KP33CAE3 is explicitly rated for IEC 61000-4-5 Class 4 secondary lightning protection when tested with a 42 Ω source impedance, as documented in the RF01243 datasheet. Its 3000 W peak pulse power rating and 53.3 V clamping voltage provide sufficient margin to withstand the 4 kV test level without degradation. This capability is validated across temperature and requires no additional external components for compliance.

What is the maximum standoff voltage and why is it important for selecting MXDA3KP33CAE3?

The maximum standoff voltage (VWM) of MXDA3KP33CAE3 is 33 V - the highest continuous DC or RMS voltage the device can block without entering conduction. Selecting a VWM equal to or greater than the system's peak operating voltage prevents false triggering during normal operation. For example, it is ideal for 24 V nominal systems where peak transients reach ~32 V, ensuring reliable protection without leakage-induced power loss or thermal drift.