Microchip Technology MADA3KP24AE3

Overview

MADA3KP24AE3 from Microsemi is a unidirectional 3000 W surface-mount transient voltage suppressor (TVS) array with 24 V standoff voltage (VWM), 26.7–29.5 V breakdown range (V(BR)), and 38.9 V maximum clamping voltage (VC) at 77.2 A peak pulse current (IPP); used for secondary lightning protection per IEC61000-4-5 in telecom power interfaces and industrial control I/O circuits.

For engineers reviewing the MADA3KP24AE3 datasheet, MADA3KP24AE3 pinout, MADA3KP24AE3 application, or MADA3KP24AE3 equivalent, key selection criteria include its 24 V working standoff, 3000 W 10/1000 µs surge rating, RoHS-compliant e3 plating, -55°C to +150°C junction temperature range, and unidirectional polarity confirmed by part number suffix 'A'.

Technical Context

This TVS array employs silicon avalanche diode technology optimized for fast response (<100 ps rise time) and high-energy transient suppression in DC power rails and signal lines. It operates as a voltage-clamped shunt device triggered above V(BR), diverting surge current away from protected circuitry while maintaining low leakage (≤2 µA at 24 V).

Designed for IEC61000-4-2 ESD (±30 kV contact), IEC61000-4-4 EFT (4 kV), and IEC61000-4-5 lightning surge (Class 1–4 with 2–42 Ω source impedance), it delivers stable clamping performance across -55°C to +150°C with full 3σ lot screening on standby current (ID).

Key Specifications

Pinout & Package

Package: DO-214AB (SMC) molded plastic case, void-free thermosetting epoxy meeting UL94V-0; dimensions 21.03 × 6.86 × 8.64 mm (L × W × H); weight ≈5 g; polarity marked with dot indicating Pin 1 (cathode).

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ24A and 1.5KE24A, MADA3KP24AE3 provides 5× higher surge power handling and SMT-ready packaging with full MIL-PRF-19500 traceability-making it the only option qualified for Class 4 lightning protection in high-reliability embedded systems.

Availability

MADA3KP24AE3 is available at Aetrix Electronics and suitable for industrial PLC I/O protection, telecom DC power input stages, and automotive body control modules requiring stable component supply with full lot traceability and RoHS compliance.

Supply support for MADA3KP24AE3 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 for aerospace, defense, and industrial markets.

The MDA3KP series was engineered specifically for mission-critical transient suppression in harsh-environment power systems-emphasizing surge robustness, thermal stability, and process-controlled manufacturing for long-term field reliability.

FAQ

What is the clamping voltage of MADA3KP24AE3 at its rated peak pulse current?

The MADA3KP24AE3 has a maximum clamping voltage (VC) of 38.9 V at its rated peak pulse current (IPP) of 77.2 A under 10/1000 µs waveform conditions. This value is measured per standard test methods defined in IEC61000-4-5 and ensures predictable overvoltage limiting during surge events. The MADA3KP24AE3 maintains this clamping performance across its full operating temperature range.

Is MADA3KP24AE3 unidirectional or bidirectional, and how is polarity identified?

MADA3KP24AE3 is a unidirectional TVS, indicated by the 'A' suffix in its part number (as opposed to 'C' for bidirectional). Polarity is physically marked on the package with a dot denoting Pin 1, which is the cathode terminal. Pin 2 serves as the anode and must be connected to system ground to enable proper shunt operation during overvoltage events. This configuration ensures conduction only during positive transients on the protected line.

Does MADA3KP24AE3 meet IEC61000-4-5 Class 4 lightning surge requirements?

Yes, MADA3KP24AE3 is explicitly rated for IEC61000-4-5 Class 4 secondary lightning protection when tested with a 2 Ω source impedance, as documented in the manufacturer's application data (RF01243, Rev B). Its 3000 W peak pulse power rating and 38.9 V clamping voltage ensure compliance under the most stringent surge stress levels defined for industrial and telecom infrastructure equipment.

What is the maximum operating temperature for MADA3KP24AE3, and how does derating affect performance?

MADA3KP24AE3 has a junction temperature range of -55°C to +150°C. Its peak pulse power rating decreases linearly above +25°C, following the derating curve in Figure 3 of the datasheet: at +100°C, PPP drops to approximately 65% of the 25°C rating (1950 W). This derating must be applied in thermal design to maintain safe operation in enclosed or high-ambient environments.

How is RoHS compliance implemented in MADA3KP24AE3, and what does the 'e3' suffix signify?

The 'e3' suffix in MADA3KP24AE3 denotes RoHS-compliant matte-tin plating on all terminals, conforming to EU Directive 2011/65/EU with lead content <1000 ppm. This finish meets MIL-STD-750 Method 2026 for solderability and eliminates hazardous substances without compromising surge endurance or thermal cycling reliability. The e3 marking is laser-etched on the device body per JEDEC standards.