Microchip Technology MXLDA3KP17CA

Overview

MXLDA3KP17CA from Microsemi is a bidirectional 3000 W transient voltage suppressor (TVS) array in a surface-mount package, designed for high-reliability secondary lightning protection per IEC61000-4-5 with 42 Ω source impedance (Class 1–4), ESD/EFT suppression per IEC61000-4-2/4-4, and inductive switching transient clamping. It features a 17 V standoff voltage (VWM), 18.9–20.9 V breakdown range (V(BR)), and 27.6 V maximum clamping voltage (VC) at 106.6 A peak pulse current.

For engineers reviewing the MXLDA3KP17CA datasheet, MXLDA3KP17CA pinout, MXLDA3KP17CA application, or MXLDA3KP17CA equivalent, this device serves as a RoHS-compliant, MIL-PRF-19500 upscreenable TVS for telecom infrastructure power rails, industrial Ethernet interfaces, and automotive body control modules requiring robust 10/1000 µs surge immunity.

Technical Context

The MXLDA3KP17CA is a bidirectional TVS diode array optimized for fast clamping of high-energy transients without polarity sensitivity. Its sub-5 ns response time enables effective suppression of ESD (IEC61000-4-2), EFT (IEC61000-4-4), and lightning-induced surges (IEC61000-4-5) across wide temperature ranges (–55 °C to +150 °C).

It operates with a 17 V rated standoff voltage (VWM), 18.9–20.9 V minimum-to-maximum breakdown voltage at 1 mA, and delivers 27.6 V clamping at 106.6 A IPP under 10/1000 µs waveform - validated per Figure 2 in RF01243 Rev B. Standby leakage is ≤2 µA at VWM, supporting low-power system monitoring integrity.

Key Specifications

Pinout & Package

MXLDA3KP17CA uses a 2-pin surface-mount DO-214AB (SMC) package with void-free UL94V-0 epoxy body, tin-lead or matte-tin plating, and polarity marked by dot indicating Pin 1 (cathode for unidirectional variants; symmetric for bidirectional). Pin 1 and Pin 2 are electrically identical in bidirectional configuration.

Key Features

Applications

Equivalent & Alternatives

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

Compared with SMBJ17CA and 1.5KE17CA, MXLDA3KP17CA uniquely combines 3 kW surge capability, SMT compatibility, bidirectional symmetry, and MIL-PRF-19500 upscreening readiness - making it optimal for new designs targeting high-reliability telecom, transportation, and energy infrastructure.

Availability

MXLDA3KP17CA is available at Aetrix Electronics and suitable for telecom power rails, industrial Ethernet PHY protection, and automotive body control modules requiring stable component supply with long-term lifecycle assurance.

Supply support for MXLDA3KP17CA 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, radiation-hardened devices, and discrete protection components.

The MDA3KP series was engineered specifically for mission-critical surge protection in aerospace, defense, and industrial systems where failure is not an option - emphasizing MIL-PRF-19500 compliance, lot traceability, and validated 10/1000 µs performance.

FAQ

What is the clamping voltage of MXLDA3KP17CA at its rated peak pulse current?

The MXLDA3KP17CA has a maximum clamping voltage (VC) of 27.6 V at its rated peak pulse current (IPP) of 106.6 A under 10/1000 µs waveform conditions, as specified in the Electrical Characteristics table on page 3 of RF01243 Rev B. This value ensures protected circuitry remains within safe operating limits during high-energy transients. The MXLDA3KP17CA achieves this clamping performance while maintaining ≤2 µA standby leakage at 17 V standoff voltage.

Is MXLDA3KP17CA compatible with lead-free soldering processes?

Yes, MXLDA3KP17CA supports lead-free reflow soldering with a maximum solder temperature of 260 °C for 10 seconds, per MIL-STD-750 Method 2026. Its terminations use annealed matte-tin plating, ensuring reliable wetting and intermetallic formation. The MXLDA3KP17CA also meets IPC/JEDEC J-STD-020B Level 1 moisture sensitivity, eliminating dry-pack requirements and enabling standard SMT flow without baking.

Does MXLDA3KP17CA meet IEC61000-4-5 Class 4 lightning surge requirements?

Yes, MXLDA3KP17CA is rated for IEC61000-4-5 Class 4 secondary lightning protection with 42 Ω source impedance, as confirmed in the Applications/Benefits section on page 1 of RF01243 Rev B. Its 3000 W peak pulse power and 27.6 V clamping voltage at 106.6 A enable compliance when implemented with proper PCB layout and grounding. The MXLDA3KP17CA also supports Class 1–3 testing with 12 Ω and 2 Ω source impedances.

What does the 'C' suffix in MXLDA3KP17CA indicate?

The 'C' suffix in MXLDA3KP17CA explicitly denotes bidirectional polarity, meaning the device provides symmetrical clamping for both positive and negative transients without regard to terminal orientation. This differs from unidirectional variants (e.g., MXLDA3KP17A), which require correct anode/cathode placement. The MXLDA3KP17CA's bidirectional behavior is intrinsic to its internal structure and verified in all electrical test conditions per RF01243 Rev B.

Can MXLDA3KP17CA be used for ESD protection per IEC61000-4-2?

Yes, MXLDA3KP17CA is qualified for ESD protection per IEC61000-4-2, with a response time of <5 ns enabling effective suppression of ±15 kV contact and ±25 kV air discharge events. Its low clamping voltage (27.6 V) and sub-µA leakage ensure minimal interference with high-speed data lines. The MXLDA3KP17CA achieves this while maintaining full compatibility with EFT (IEC61000-4-4) and lightning surge (IEC61000-4-5) standards in a single device.