Microchip Technology MAPLAD18KP130AE3

Overview

MAPLAD18KP130AE3 from Microsemi is a unidirectional surface-mount transient voltage suppressor (TVS) designed for high-energy surge protection in aerospace and automotive systems. It delivers 18,000 W peak pulse power at 10/1000 μs, clamps at ≤209 V under 500 A impulse, and features 130 V reverse standoff voltage (VWM), 144–159 V breakdown voltage (V(BR)), and <100 ps response time. It is qualified to AEC-Q101 and meets RTCA DO-160F Level 5 pin injection for aircraft avionics.

For engineers reviewing the MAPLAD18KP130AE3 datasheet, MAPLAD18KP130AE3 pinout, MAPLAD18KP130AE3 application, or MAPLAD18KP130AE3 equivalent, key selection criteria include its 130 V standoff rating, 209 V max clamping at 500 A, RoHS-compliant e3 plating, 0.7 °C/W junction-to-case thermal resistance, and qualification for multi-stroke lightning (DO-160 Section 22) and IEC 61000-4-5 secondary protection with 42 Ω source impedance.

Technical Context

This TVS diode operates as a unidirectional clamping device with cathode on the metal base (package bottom), enabling low-inductance mounting directly to heatsinks. Its thermally optimized PLAD package achieves RθJC = 0.7 °C/W, supporting high-repetition surges when mounted per recommended FR4 pad layout.

It is characterized for 10/1000 μs waveform compliance, with full surge testing performed per AEC-Q101 and RTCA DO-160F Waveform 4 (6.4/69 μs) and Waveform 5A (40/120 μs). Standby current ID is ≤10 μA at VWM, and temperature coefficient αV(BR) is 157 mV/°C - critical for stable clamping across -55°C to +150°C operating range.

Key Specifications

Pinout & Package

The MAPLAD18KP130AE3 uses the PLAD surface-mount package: void-free UL94V-0 epoxy body (12.32 × 10.54 × 5.08 mm), matte-tin (e3) RoHS-compliant terminations, and cathode marked on the metal base (bottom side). Recommended pad layout per RF01215 Rev B supports optimal thermal dissipation and mechanical reliability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ130A and SMCJ130A, MAPLAD18KP130AE3 provides 30× higher peak pulse power, 17× lower thermal resistance, and formal qualification for aviation lightning standards - making it irreplaceable in safety-critical, high-reliability platforms where single-point failure is unacceptable.

Availability

MAPLAD18KP130AE3 is available at Aetrix Electronics and suitable for aerospace avionics, automotive ECU power protection, and industrial motor drive DC bus applications requiring stable component supply, long-lifecycle support, and traceable high-reliability sourcing.

Supply support for MAPLAD18KP130AE3 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, mixed-signal, and radiation-hardened solutions for aerospace, defense, and industrial markets.

The PLAD-series TVS family was engineered specifically for multi-stroke lightning survivability and thermal robustness in mission-critical power interfaces - targeting RTCA DO-160, AEC-Q101, and IEC 61000-4-5 compliance without external heatsinking.

FAQ

What is the clamping voltage of MAPLAD18KP130AE3 at 500 A?

The MAPLAD18KP130AE3 has a maximum clamping voltage (VC) of 209 V at 500 A peak pulse current under 10/1000 μs waveform conditions. This value is specified in the Electrical Characteristics table of RF01215 Rev B and defines the upper voltage limit imposed on protected circuits during worst-case transients. The clamping performance is validated across the full operating temperature range and forms the basis for downstream component voltage rating selection.

Is MAPLAD18KP130AE3 qualified for automotive applications?

Yes, MAPLAD18KP130AE3 is AEC-Q101 qualified and explicitly rated for automotive load dump protection. Its 130 V VWM aligns with 24 V system architectures, and its 18,000 W PPP rating exceeds ISO 7637-2 Pulse 5a requirements. The device undergoes wafer-level lot traceability and 3σ screening on standby current (ID), satisfying Tier 1 supplier requirements for engine control units and battery management systems.

Does MAPLAD18KP130AE3 meet RTCA DO-160F lightning standards?

Yes, MAPLAD18KP130AE3 is certified for RTCA DO-160F Section 22 multi-stroke lightning and Waveform 4 (6.4/69 μs) Level 5 and Waveform 5A (40/120 μs) Level 4 pin injection testing at 25°C. These qualifications are documented in RF01215 Rev B and confirmed via factory surge testing - making MAPLAD18KP130AE3 suitable for flight-critical avionics power inputs and data interfaces.

What is the thermal resistance junction-to-case for MAPLAD18KP130AE3?

The MAPLAD18KP130AE3 has a junction-to-case thermal resistance (RθJC) of 0.7 °C/W, measured with case temperature controlled on a heatsink as specified in RF01215 Rev B. This ultra-low value enables efficient heat transfer from the silicon die to the PCB copper pour or external heatsink, supporting high-duty-cycle surge events without thermal runaway - a key differentiator versus standard SMC/SMB packages.

How is polarity identified on MAPLAD18KP130AE3?

MAPLAD18KP130AE3 is a unidirectional TVS with cathode on the metal base (bottom surface) of the PLAD package. The top surface is the anode. Polarity is not marked on the body; instead, orientation is defined by mechanical mounting - the metal base must be soldered to a grounded or low-impedance thermal plane. This configuration minimizes inductance and maximizes clamping speed, critical for sub-100 ps response.