Microchip Technology JANTX1N6470US/TR

Overview

JANTX1N6470US/TR from Microsemi is a military-qualified, voidless-hermetically-sealed unidirectional transient voltage suppressor (TVS) diode in G-MELF (D-5C) package. It provides 6 V working peak standoff voltage (V_WM), 11.0 V maximum clamping voltage at 137 A peak pulse current (10/1000 µs), and 1500 W peak pulse power for robust surge protection in high-reliability aerospace and defense systems.

For engineers reviewing the JANTX1N6470US/TR datasheet, JANTX1N6470US/TR pinout, JANTX1N6470US/TR application, or JANTX1N6470US/TR equivalent, key selection criteria include its MIL-PRF-19500/552 qualification, -55°C to +175°C operating temperature range, Category I metallurgical bond, hermetic glass construction, and compatibility with IEC61000-4-2/4-4/4-5 transient immunity standards.

Technical Context

This unidirectional TVS operates as a clamping device that remains non-conductive below its 6 V working peak voltage and rapidly transitions to low-impedance conduction above its 6.5 V minimum breakdown voltage (I_BR = 50 mA). Its hard-glass hermetic seal and tungsten slug construction ensure zero internal voids and stable performance under thermal cycling and radiation exposure.

The device delivers 1500 W peak pulse power at 25°C under 10/1000 µs waveform, with clamping limited to 11.0 V at 137 A. Its thermal resistance junction-to-end-cap is 20.0 °C/W, enabling reliable power dissipation in high-temperature environments without derating below 175°C ambient.

Key Specifications

Pinout & Package

Package: G-MELF (also designated D-5C), hermetically sealed voidless hard-glass body with tungsten slugs and copper end caps finished with Sn/Pb. Cathode identified by band on body.

Key Features

Applications

Equivalent & Alternatives

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

Compared with JANTX1N6469US/TR and JANTX1N6471US/TR, JANTX1N6470US/TR offers optimal balance of 6 V standoff and 11.0 V clamping for 28 V aerospace power buses-delivering higher surge margin than the 5 V variant while maintaining lower clamping stress than the 12 V option.

Availability

JANTX1N6470US/TR is available at Aetrix Electronics and suitable for aerospace avionics, defense radar subsystems, satellite C&DH units, and nuclear instrumentation requiring stable component supply across extended product lifecycles.

Supply support for JANTX1N6470US/TR 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 (now part of Microchip Technology) designs high-reliability analog and mixed-signal components for aerospace, defense, and industrial markets, with emphasis on radiation tolerance and long-term parametric stability.

JANTX1N6470US/TR belongs to Microsemi's military-qualified voidless-hermetic TVS family, engineered specifically for mission-critical transient suppression where failure is not an option-especially in launch vehicles, satellites, and nuclear facilities.

FAQ

What is the maximum clamping voltage of JANTX1N6470US/TR under standard test conditions?

JANTX1N6470US/TR has a maximum clamping voltage (V_C) of 11.0 V when subjected to a 10/1000 µs surge waveform at 137 A peak pulse current. This value is measured per MIL-STD-750 Method 3019 and reflects the worst-case voltage imposed on protected circuitry during transient events. The clamping performance is guaranteed across the full -55°C to +175°C operating range and is validated in the official Microsemi datasheet Rev D.

Is JANTX1N6470US/TR compatible with lead-free reflow soldering processes?

JANTX1N6470US/TR is rated for solder temperatures up to 260°C for 10 seconds, making it compatible with standard lead-free reflow profiles (e.g., JEDEC J-STD-020). Its copper end caps with Sn/Pb finish are designed for thermal robustness, though Pb-free assembly requires verification of intermetallic formation and wetting behavior. The device's hermetic glass body eliminates moisture sensitivity concerns (MSL N/A), eliminating bake requirements prior to assembly.

How does the "JANTX" prefix affect the qualification status of JANTX1N6470US/TR?

The "JANTX" prefix on JANTX1N6470US/TR indicates full compliance with MIL-PRF-19500/552, including extended temperature screening (-55°C to +175°C), burn-in, and lot acceptance testing. It certifies the device for use in high-reliability applications where failure risk must be minimized-distinct from commercial "1N6470US" variants. JANTX1N6470US/TR is traceable to qualified manufacturers and lot-controlled per MIL-STD-9858A.

Does JANTX1N6470US/TR meet IEC61000-4-5 for lightning surge immunity?

JANTX1N6470US/TR is validated for secondary lightning surge protection per IEC61000-4-5 at select levels, supporting system-level compliance when used with appropriate impedance-matching layout and grounding. Its 1500 W peak pulse power and 137 A rating align with Combination Wave (1.2/50 µs voltage, 8/20 µs current) testing up to 4 kV line-to-earth. System integration must follow Microsemi Application Note AN-1001 for optimal placement and trace routing.

What is the polarity marking convention for JANTX1N6470US/TR?

JANTX1N6470US/TR uses cathode-band polarity marking: a visible painted band on the glass body identifies the cathode terminal, which connects to the line being protected. The anode is the unmarked end cap and must be tied to ground or low-impedance reference. This unidirectional configuration ensures proper clamping action only during positive transients on the protected line relative to ground.