Microchip Technology JANTX1N5652A

Overview

JANTX1N5652A from Microchip Technology is a hermetically sealed, unidirectional transient voltage suppressor (TVS) diode in DO-13 metal package, designed for high-reliability military avionics and industrial systems. It features 50.2 V rated standoff voltage (VWM), 55.8–58.9 V breakdown voltage (V(BR)) at 1 mA, 85.0 V maximum clamping voltage (VC) at 17.7 A peak pulse current (IPP), and 1500 W peak pulse power rating per 10/1000 µs waveform.

For engineers reviewing the JANTX1N5652A datasheet, JANTX1N5652A pinout, JANTX1N5652A application, or JANTX1N5652A equivalent, key selection criteria include its MIL-PRF-19500/500 JANTX qualification, sub-100 ps response time, -55°C to +175°C operating temperature range, and suitability for secondary lightning protection per IEC61000-4-5 with 42 Ω, 12 Ω, or 2 Ω source impedance.

Technical Context

The JANTX1N5652A operates as a unidirectional avalanche diode, entering controlled breakdown above its VWM to clamp transients while maintaining low leakage (<5 µA at 50.2 V). Its hermetic DO-13 metal-glass package ensures reliability under thermal cycling, humidity, and radiation environments typical of aerospace deployment.

It delivers 1500 W peak pulse power handling with <100 ps response, enabling protection against ESD (IEC61000-4-2), EFT (IEC61000-4-4), and induced lightning surges (IEC61000-4-5 Class 1–4 depending on source impedance). Thermal resistance is 50°C/W junction-to-lead at 10 mm lead length.

Key Specifications

Pinout & Package

DO-13 (DO-202AA) hermetically sealed metal-glass package with axial leads; cathode terminal electrically connected to case and marked by diode symbol on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with JANTX1N5652A, 1N5652A omits military screening but retains identical electrical specs for non-mission-critical use, while JANTXV1N5652A adds radiation hardening and wider temperature validation-making it suitable for space and nuclear environments where JANTX-level assurance is insufficient.

Availability

JANTX1N5652A is available at Aetrix Electronics and suitable for aerospace avionics, military vehicle electronics, and high-temperature industrial sensor modules requiring stable component supply with full MIL-PRF-19500/500 compliance and traceable lot documentation.

Supply support for JANTX1N5652A 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 now manufactures high-reliability discrete semiconductors including military-qualified TVS diodes, power modules, and radiation-hardened components.

The JANTX1N5652A belongs to Microchip's legacy Microsemi TVS diode family, engineered specifically for defense, aerospace, and harsh-environment industrial applications demanding hermetic packaging, rapid transient response, and rigorous qualification.

FAQ

What is the maximum clamping voltage of JANTX1N5652A under a 10/1000 µs surge?

The JANTX1N5652A has a maximum clamping voltage (VC) of 85.0 V when subjected to its rated peak pulse current of 17.7 A under the standard 10/1000 µs waveform. This value is measured at T_A = 25°C and defines the upper voltage limit imposed on protected circuitry during transient events. The JANTX1N5652A maintains this clamping performance across its full military temperature range due to its hermetic DO-13 construction and stable avalanche characteristics.

Is JANTX1N5652A suitable for IEC61000-4-5 secondary lightning protection?

Yes, JANTX1N5652A is certified for secondary lightning protection per IEC61000-4-5 with 42 Ω, 12 Ω, and 2 Ω source impedances-covering Class 1 through Class 4 depending on configuration. Its 1500 W peak pulse power rating and 85.0 V clamping voltage enable reliable suppression of induced surges in avionics, vehicle electronics, and industrial control systems. The JANTX1N5652A's qualification includes validation under these exact test conditions as documented in Microchip's T4-LDS-0096 datasheet.

How does the DO-13 package of JANTX1N5652A differ from plastic TVS diodes like 1N6267 series?

The JANTX1N5652A uses a hermetically sealed DO-13 metal-glass package, whereas the 1N6267 series employs plastic axial-leaded construction. The DO-13 package provides superior moisture resistance, thermal conductivity (50°C/W junction-to-lead), and long-term parameter stability under thermal cycling and radiation exposure-critical for aerospace and military use. The JANTX1N5652A's metal case also serves as the cathode terminal, enabling low-inductance grounding essential for high-speed transient suppression.

What is the standoff voltage (VWM) and why is it critical for JANTX1N5652A selection?

The JANTX1N5652A has a rated standoff voltage (VWM) of 50.2 V, meaning it remains non-conductive up to this reverse DC or peak AC voltage level. This parameter is critical because it must exceed the normal operating voltage of the protected line-e.g., a 28 V DC bus-to avoid leakage or power loss during steady-state operation. Selecting a JANTX1N5652A with insufficient VWM margin risks premature conduction and thermal runaway; its 50.2 V rating provides safe headroom for 28 V systems with ripple and tolerance.

Does JANTX1N5652A require derating at elevated temperatures?

Yes, JANTX1N5652A requires derating of its DC power dissipation above +125°C, with linear reduction to zero at +175°C per Figure 3 in the datasheet. However, its 1500 W peak pulse power rating remains valid across the full -55°C to +175°C operating range because transient suppression relies on short-duration avalanche conduction-not sustained power dissipation. The JANTX1N5652A's thermal resistance (50°C/W junction-to-lead) and hermetic package ensure predictable clamping behavior even at maximum ambient temperature.