Microchip Technology JANTXV1N5648A

Overview

JANTXV1N5648A from Microchip Technology (formerly Microsemi) is a hermetically sealed, unidirectional transient voltage suppressor (TVS) diode in DO-13 metal package, designed for high-reliability aerospace and military systems. It features 34.8 V rated standoff voltage (VWM), 40.9 V minimum breakdown voltage (V(BR)), 59.3 V maximum clamping voltage (VC) at 25.3 A peak pulse current (IPP), and 1500 W peak pulse power rating per 10/1000 µs waveform - used to protect avionics power rails and signal lines against secondary lightning surges per IEC61000-4-5 Class 4 (42 Ω source impedance).

For engineers reviewing the JANTXV1N5648A datasheet, JANTXV1N5648A pinout, JANTXV1N5648A application, or JANTXV1N5648A equivalent, key selection criteria include its MIL-PRF-19500/500 qualified JANTXV grade, hermetic DO-13 package with cathode-to-case polarity, sub-100 ps response time, and radiation-hardened performance per MicroNote 050 - critical for flight-critical subsystems requiring guaranteed surge immunity across -55°C to +175°C.

Technical Context

The JANTXV1N5648A operates as a unidirectional avalanche diode, entering controlled breakdown when transient voltage exceeds its 40.9–45.2 V V(BR) range at 1 mA test current. Its clamping action limits downstream voltage to ≤59.3 V during 25.3 A 10/1000 µs surges, delivering 1500 W peak pulse power without degradation under specified thermal conditions.

Designed for through-hole mounting in high-reliability environments, it leverages a welded, hermetically sealed DO-13 (DO-202AA) metal-glass package with tin-lead plating, cathode connected to case, and polarity marked by diode symbol. Its temperature coefficient of V(BR) is +0.101 %/°C, enabling predictable voltage drift over its full -55°C to +175°C operating range.

Key Specifications

Pinout & Package

Hermetically sealed DO-13 (DO-202AA) metal-glass package with axial leads; cathode terminal electrically connected to case and marked by diode symbol on body. Mounting requires 0.375" (10 mm) lead length from body for thermal derating compliance.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar unidirectional TVS applications.

Compared with JANTXV1N5647A and JANTXV1N5649A, the JANTXV1N5648A uniquely balances 34.8 V standoff and 59.3 V clamping for 28 V aerospace systems - offering optimal voltage margin for MIL-STD-704 compliance while minimizing stress on downstream regulators and FPGAs.

Availability

JANTXV1N5648A is available at Aetrix Electronics and suitable for aircraft power distribution units, avionics sensor interfaces, and military vehicle engine control modules requiring stable component supply across extended temperature and radiation environments.

Supply support for JANTXV1N5648A 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

Microchip Technology acquired Microsemi in 2018 and maintains its high-reliability analog and discrete product lines, including radiation-hardened and military-qualified components for aerospace, defense, and industrial markets.

The JANTXV1N5648A belongs to Microchip's legacy Microsemi TVS diode family, engineered specifically for mission-critical surge protection in avionics, missile guidance, and satellite power systems where hermeticity, radiation tolerance, and MIL-PRF-19500 compliance are mandatory.

FAQ

What is the maximum clamping voltage of the JANTXV1N5648A during a 10/1000 µs surge?

The JANTXV1N5648A has a maximum clamping voltage (VC) of 59.3 V when subjected to its rated 25.3 A peak pulse current (IPP) under the standard 10/1000 µs waveform. This value is measured at 25°C ambient and defines the upper voltage limit imposed on protected circuitry during transient events - critical for ensuring downstream ICs remain within absolute maximum ratings.

Is the JANTXV1N5648A qualified to MIL-PRF-19500/500 standards?

Yes, the JANTXV1N5648A carries full JANTXV qualification per MIL-PRF-19500/500, including rigorous screening for hermeticity, temperature cycling, burn-in, and electrical parameter stability. This certification confirms its suitability for high-reliability military and aerospace applications where zero-defect operation is mandated across extreme environmental profiles.

How does the DO-13 package of the JANTXV1N5648A affect PCB layout and thermal design?

The JANTXV1N5648A's DO-13 (DO-202AA) metal-glass package requires 0.375" (10 mm) lead length from the body for proper thermal derating - meaning PCB traces must accommodate this spacing to maintain junction-to-lead thermal resistance at 50°C/W. Its cathode-to-case construction mandates direct connection of the case to a low-inductance ground plane for effective surge shunting.

Can the JANTXV1N5648A be used for ESD protection per IEC61000-4-2?

Yes, the JANTXV1N5648A clamps transients in less than 100 picoseconds and is explicitly validated for ESD protection per IEC61000-4-2. Its 5 µA standby current at 34.8 V and rapid avalanche response make it suitable for safeguarding high-impedance sensor inputs and communication lines in avionics systems where human-body-model (HBM) and contact-discharge events must be suppressed below logic-threshold voltages.

What is the radiation hardness specification for the JANTXV1N5648A?

The JANTXV1N5648A is inherently radiation hard per Microsemi MicroNote 050, which documents its performance under total ionizing dose (TID) exposure without parametric shift or functional failure. This radiation tolerance is built into the device physics and process, eliminating the need for external shielding or derating in low-earth-orbit satellite and high-altitude aircraft applications.