Microchip Technology JANTXV1N6172AUS/TR

Overview

JANTXV1N6172AUS from Microsemi is a voidless hermetically sealed surface-mount bidirectional Transient Voltage Suppressor (TVS) qualified to MIL-PRF-19500/516 at JANTXV level. It provides 136.8 V working standoff voltage (VWM), 171.0 V minimum breakdown voltage (V(BR)) at 5 mA, clamps to 245.7 V at 6.1 A peak pulse current (IPP), and delivers 1500 W peak pulse power for 10/1000 µs waveform - deployed in avionics power bus protection.

For engineers reviewing the JANTXV1N6172AUS datasheet, JANTXV1N6172AUS pinout, JANTXV1N6172AUS application, or JANTXV1N6172AUS equivalent, key selection criteria include military-grade reliability qualification, bidirectional clamping behavior, glass-body thermal resistance (5.0 °C/W), standoff-to-clamp voltage margin (136.8 V → 245.7 V), and compatibility with high-energy lightning-induced surge waveforms per IEC61000-4-5.

Technical Context

This TVS operates as a voltage-clamped shunt protector with symmetrical bidirectional avalanche conduction - no polarity marking required. Its hard-glass construction uses internal Category 1 metallurgical bonds and triple-layer passivation to sustain repeated 1500 W transients without degradation under -55 °C to +175 °C junction temperature range.

It exhibits a 0.110 %/°C temperature coefficient of breakdown voltage (αV(BR)), enabling predictable V(BR) drift across temperature. Clamping performance is specified at 6.1 A IPP (10/1000 µs), with thermal resistance from junction to end cap rated at 5.0 °C/W - critical for sustained surge duty in sealed chassis environments.

Key Specifications

Pinout & Package

Package: Hermetically sealed voidless hard-glass "C" package (SQ-MELF), with tungsten slugs and tin/lead-plated copper terminals. Dimensions: BD = 0.183–0.202 in (4.65–5.13 mm), BL = 0.205–0.245 in (5.21–6.22 mm), ECT = 0.019–0.028 in (0.48–0.71 mm). Weight ≈ 1100 mg.

Key Features

Applications

Equivalent & Alternatives

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

Compared with JANTXV1N6172AUS, JANTXV1N6171AUS offers tighter clamping headroom for 120 V systems, while JANTXV1N6173AUS extends standoff range for higher-voltage rails - both retain identical MIL-PRF-19500/516 JANTXV qualification and SQ-MELF packaging but differ in voltage grading and surge current derating.

Availability

JANTXV1N6172AUS is available at Aetrix Electronics and suitable for aerospace power distribution, naval radar signal conditioning, tactical vehicle data buses, and satellite payload power rails requiring stable component supply under extended lead-time and obsolescence-sensitive programs.

Supply support for JANTXV1N6172AUS 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) designs high-reliability analog and mixed-signal semiconductors for defense, aerospace, and industrial markets - emphasizing radiation tolerance, long-term stability, and military qualification.

JANTXV1N6172AUS belongs to Microsemi's MIL-qualified TVS family engineered for mission-critical surge protection in environments where failure is not an option - targeting avionics, shipboard electronics, and space-qualified subsystems.

FAQ

What is the maximum clamping voltage of JANTXV1N6172AUS under standard test conditions?

The JANTXV1N6172AUS has a maximum clamping voltage (VC) of 245.7 V when subjected to a 10/1000 µs peak pulse current of 6.1 A. This value is measured per MIL-PRF-19500/516 test methods and defines the upper voltage limit imposed on protected circuitry during surge events. The clamping performance remains stable across its full -55 °C to +175 °C junction temperature range.

Is JANTXV1N6172AUS RoHS compliant?

No, JANTXV1N6172AUS is not RoHS compliant. Per the nomenclature table in T4-LDS-0278-1 Rev. 2, RoHS-compliant versions (marked with "e3") are available only for commercial-grade variants - JANTXV-level parts use traditional tin/lead plating to meet MIL-PRF-19500/516 solderability and reliability requirements.

Does JANTXV1N6172AUS require polarity-aware PCB layout?

No, JANTXV1N6172AUS is a bidirectional TVS with no polarity marking. Its symmetrical avalanche structure allows either terminal to serve as anode or cathode depending on transient polarity. This eliminates orientation constraints during automated placement and reduces risk of assembly error in high-reliability board builds.

What is the thermal resistance specification for JANTXV1N6172AUS?

JANTXV1N6172AUS has a thermal resistance from junction to end cap (RθJEC) of 5.0 °C/W. This parameter governs heat dissipation when mounted directly to a metal chassis or heatsink and is used to calculate allowable steady-state power dissipation under elevated ambient temperatures - critical for sustained surge duty in sealed enclosures.

How does JANTXV1N6172AUS perform under extreme temperature cycling?

JANTXV1N6172AUS is qualified for operation from -55 °C to +175 °C and undergoes MIL-PRF-19500/516 temperature cycling per Method 1010. Its voidless hermetic glass package and Category 1 metallurgical bonds ensure no parametric shift or bond failure after ≥500 cycles - validated for airborne and space-based platforms with wide thermal excursions.