Microchip Technology MAPLAD36KP130CAE3

Overview

MAPLAD36KP130CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 36 kW peak pulse power at 10/1000 μs, clamps transients to ≤209 V at 173 A, and features a 130 V reverse standoff voltage (VWM), 144–159 V breakdown voltage (V(BR)), and 1.0 °C/W junction-to-case thermal resistance - enabling robust secondary lightning protection per IEC 61000-4-5 (2 Ω source, Class 4) and RTCA DO-160F Waveform 4 Level 5.

For engineers reviewing the MAPLAD36KP130CAE3 datasheet, MAPLAD36KP130CAE3 pinout, MAPLAD36KP130CAE3 application, or MAPLAD36KP130CAE3 equivalent, this device is selected for high-reliability DC bus protection where multi-stroke lightning immunity, low-profile SMT mounting, and traceable MIL-PRF-19500 upscreening options are required.

Technical Context

This TVS employs silicon avalanche diode technology with void-free thermosetting epoxy packaging and a metal-base cathode configuration. Its bidirectional construction enables symmetrical clamping for AC-coupled or floating signal lines, while the 1.0 °C/W RθJC supports direct thermal coupling to heatsinks or copper planes on FR4 PCBs.

It meets AEC-Q101 stress testing requirements and provides validated protection against ESD (IEC 61000-4-2), EFT (IEC 61000-4-4), and induced RFI. The device's 100 ps response time and <5 ns clamping latency ensure fast suppression of fast-rising transients in avionics power distribution networks.

Key Specifications

Pinout & Package

MAPLAD36KP130CAE3 uses a PLAD (Power Leadless Array Device) surface-mount package with two terminals: anode and cathode. The metal base serves as the cathode terminal for unidirectional variants; in bidirectional construction (denoted by "CA"), both terminals are functionally symmetric and non-polarized.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SP3022-01ETG and SMAJ130CA, MAPLAD36KP130CAE3 delivers 90× higher peak power and validated multi-stroke lightning endurance - making it the sole option among the three for certified avionics and heavy-duty automotive power rail protection.

Availability

MAPLAD36KP130CAE3 is available at Aetrix Electronics and suitable for aerospace power distribution, automotive load dump protection, industrial motor drive DC bus stabilization, and railway signaling interface hardening requiring stable component supply and long-term lifecycle assurance.

Supply support for MAPLAD36KP130CAE3 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 (now part of Microchip Technology) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and timing solutions for aerospace, defense, and industrial markets.

The MAPLAD36KP130CAE3 belongs to Microsemi's PLAD-series high-power TVS family, engineered specifically for certified lightning and load-dump protection in safety-critical platforms where multi-stroke endurance and thermal robustness are mandatory.

FAQ

What is the clamping voltage of MAPLAD36KP130CAE3 at its rated peak pulse current?

The MAPLAD36KP130CAE3 has a maximum clamping voltage (VC) of 209 V at its rated peak pulse current (IPP) of 173 A under 10/1000 μs waveform conditions. This value is measured per Figure 3 in the RF01216 datasheet and defines the upper voltage limit imposed on protected circuitry during worst-case surge events. The clamping performance remains stable across multiple strokes when mounted per recommended pad layout.

Is MAPLAD36KP130CAE3 compliant with RoHS and AEC-Q101 standards?

Yes, MAPLAD36KP130CAE3 carries the "e3" suffix indicating RoHS-compliant matte-tin plating and has been tested in accordance with AEC-Q101 requirements for discrete semiconductors. Its qualification includes HTRB, HTGB, and surge testing per the standard - confirming suitability for automotive under-hood applications where reliability and environmental resilience are critical.

Does MAPLAD36KP130CAE3 require a heatsink for continuous operation?

MAPLAD36KP130CAE3 does not require an external heatsink for single-event surge suppression, but steady-state power dissipation must be managed: it supports 2.5 W at TA = 25°C and 71 W at TC = 100°C. For sustained power handling, thermal design must leverage its 1.0 °C/W RθJC via direct mounting to ≥1-in² 2-oz copper with ≥6 thermal vias - no additional heatsink is needed if PCB thermal mass meets derating curves in Figure 5.

How does MAPLAD36KP130CAE3 perform under RTCA DO-160F Waveform 4 and 5A?

MAPLAD36KP130CAE3 is rated for RTCA DO-160F Waveform 4 (6.4/69 μs) Level 5 up to 130 V VWM and Waveform 5A (40/120 μs) Level 4 up to 78 V VWM. These ratings are explicitly listed in the RF01216 Rev B datasheet. Performance at elevated temperatures requires derating per MicroNote 132, and validation must follow the test setup defined in DO-160F Section 22.

Can MAPLAD36KP130CAE3 replace unidirectional TVS diodes in existing designs?

MAPLAD36KP130CAE3 is bidirectional (indicated by "CA") and may replace unidirectional TVS diodes only if the circuit topology permits symmetrical clamping - such as across AC lines, differential buses, or floating references. It cannot substitute for unidirectional devices in DC-biased configurations where polarity-specific conduction is required, as its bidirectional behavior would short the bias rail during normal operation.