Microchip Technology MAPLAD18KP130CAE3

Overview

MAPLAD18KP130CAE3 from Microsemi is a bidirectional surface-mount transient voltage suppressor (TVS) rated for 18,000 W peak pulse power at 10/1000 μs, with 130 V reverse standoff voltage (VWM), 144–159 V breakdown voltage (V(BR)), and 209 A peak pulse current (IPP). It delivers low-clamping performance (VC = 209 V max @ IPP) and meets RTCA DO-160F Level 5 pin injection protection for aircraft avionics.

For engineers reviewing the MAPLAD18KP130CAE3 datasheet, MAPLAD18KP130CAE3 pinout, MAPLAD18KP130CAE3 application, or MAPLAD18KP130CAE3 equivalent, key selection criteria include bidirectional surge handling up to 18 kW, IEC 61000-4-5 Class 2–3 secondary lightning protection (42 Ω, 12 Ω source), DO-160F Waveform 4 & 5A compliance, and thermal resistance of 0.7 °C/W junction-to-case.

Technical Context

This device operates as a clamping-type TVS diode in bidirectional configuration, leveraging silicon avalanche structure to limit transient overvoltages across protected lines. Its design targets high-energy transients including lightning-induced surges (RTCA DO-160 Section 22), automotive load dump, and EFT/ESD per IEC 61000-4-2/4-4.

Thermal management is enabled by a metal-base package with 0.7 °C/W RθJC and 50 °C/W RθJA on FR4 PCB (per recommended pad layout), supporting multi-stroke reliability under ≤0.05% duty factor. Standby current ID is ≤10 μA at VWM, and clamping response time is <5 ns.

Key Specifications

Pinout & Package

The MAPLAD18KP130CAE3 uses a surface-mount PLAD package with metal base cathode (bidirectional symmetry); polarity is non-directional due to CA suffix. Package dimensions: 12.32 × 10.54 × 5.08 mm (L × W × H), weight ≈1 g, UL94V-0 epoxy body, matte-tin RoHS-compliant plating (e3).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ130CA and SMCJ130CA, MAPLAD18KP130CAE3 delivers 30× and 12× higher peak pulse power respectively, with certified multi-stroke capability, metal-base thermal performance, and aerospace-grade screening options - making it uniquely suited for safety-critical, high-reliability platforms.

Availability

MAPLAD18KP130CAE3 is available at Aetrix Electronics and suitable for aerospace avionics, railway signaling, industrial motor drives, and automotive ADAS systems requiring stable component supply, long-lifecycle assurance, and certified surge immunity.

Supply support for MAPLAD18KP130CAE3 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, mixed-signal, and radiation-hardened ICs for aerospace, defense, and industrial markets.

The PLAD-series TVS family was engineered for mission-critical transient suppression in aviation and transportation systems, emphasizing multi-stroke survivability, low thermal resistance, and compliance with RTCA DO-160 and IEC 61000-4-5 standards.

FAQ

What does the 'CA' suffix indicate in MAPLAD18KP130CAE3?

The 'CA' suffix in MAPLAD18KP130CAE3 denotes bidirectional construction - meaning the device provides symmetrical clamping for both positive and negative transients. This differs from unidirectional variants (e.g., MAPLAD18KP130AE3), which require correct polarity orientation and only clamp one polarity. The CA version simplifies layout for AC-coupled or differential interfaces.

Is MAPLAD18KP130CAE3 compliant with RoHS and REACH?

Yes, MAPLAD18KP130CAE3 is RoHS compliant, indicated by the 'e3' suffix in its full designation. It uses annealed matte-tin plating and void-free UL94V-0 epoxy packaging. Full REACH SVHC declaration and conflict minerals reporting are available through Microchip's component compliance portal upon request.

What is the maximum steady-state power dissipation for MAPLAD18KP130CAE3?

MAPLAD18KP130CAE3 has a steady-state power dissipation (PD) of 2.5 W at TA = 25°C and 71 W at TC = 100°C. The high 71 W rating reflects its metal-base thermal design - actual usable steady-state power depends on heatsinking; derating curves in Figure 3 must be applied when ambient or case temperature exceeds 25°C.

Does MAPLAD18KP130CAE3 require special PCB layout considerations?

Yes - MAPLAD18KP130CAE3 requires adherence to the recommended pad layout (Ref. RF01215, page 7) to achieve specified RθJA = 50 °C/W and surge reliability. Minimum copper area under the metal base should be ≥2500 mm² (≈50 × 50 mm) with thermal vias to inner ground planes. Short, wide traces are mandatory to minimize inductance during 209 A transients.

Can MAPLAD18KP130CAE3 be used for IEC 61000-4-5 testing with 2 Ω source impedance?

No - MAPLAD18KP130CAE3 is validated for IEC 61000-4-5 Class 2–3 with 42 Ω and 12 Ω source impedances only. Per RF01215 Rev B, devices rated ≥130 V (e.g., MAPLAD18KP130CAE3) are not qualified for 2 Ω testing, which applies only to lower-voltage variants (≤64 V). Using it in 2 Ω configurations may exceed safe operating area limits.