Microchip Technology JANTX1N4106C-1

Overview

JANTX1N4106C-1 from Microsemi is a 500 mW, 12 V metallurgically bonded glass Zener diode in DO-35 package, qualified to MIL-PRF-19500/435 JANTX level, with ±2% voltage tolerance, 250 mA test current, and 200 Ω dynamic impedance at 25 °C - used for precision voltage regulation in military power supplies and avionics reference circuits.

For engineers reviewing the JANTX1N4106C-1 datasheet, JANTX1N4106C-1 pinout, JANTX1N4106C-1 application, or JANTX1N4106C-1 equivalent, key selection criteria include Zener voltage tolerance (±2%), thermal resistance (250 °C/W junction-to-lead), noise density (1 µV/√Hz), and MIL-qualified reliability for high-reliability analog biasing and reference design.

Technical Context

This device operates as a reverse-biased voltage regulator with a nominal Zener voltage of 12.0 V at 250 mA test current (IZT), exhibiting 200 Ω dynamic impedance (ZZT) and +0.080 %/°C temperature coefficient. It maintains regulation across wide current ranges (IZK to IZM = 9.2 mA to 40 mA) and temperature extremes (–65 °C to +175 °C).

Its hermetically sealed DO-35 glass package enables stable operation under thermal cycling and radiation exposure, supported by metallurgical bonding and non-ESD-sensitive construction per MIL-STD-750 method 1020 - critical for aerospace and defense systems requiring long-term parametric stability.

Key Specifications

Pinout & Package

DO-35 (DO-204AH) axial-leaded glass package with cathode indicated by band; operated with banded end positive for Zener regulation. Tin-lead or RoHS-compliant matte-tin plating, solderable per MIL-STD-750 method 2026.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener regulation applications.

Compared with JANTX1N4106C-1, the 1N4106US-1 offers footprint reduction at the cost of thermal performance and qualification grade, while JANTXV1N4106C-1 delivers identical regulation with higher screening rigor - enabling trade-offs between cost, manufacturability, and mission assurance.

Availability

JANTX1N4106C-1 is available at Aetrix Electronics and suitable for aerospace power regulation, avionics reference circuits, and military radio bias supply requiring stable component supply with full traceability and long-term obsolescence management.

Supply support for JANTX1N4106C-1 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 components for aerospace, defense, and industrial markets.

The JANTX1N4106C-1 belongs to Microsemi's legacy MIL-qualified Zener diode family, engineered specifically for precision voltage regulation in mission-critical systems where parameter stability, radiation tolerance, and long-term reliability are non-negotiable.

FAQ

What is the Zener voltage tolerance of JANTX1N4106C-1?

JANTX1N4106C-1 has a nominal Zener voltage of 12.0 V with a ±2% tolerance, as indicated by the "C" suffix in its part number per Microsemi's nomenclature. This tolerance is verified at 250 mA test current and 25 °C ambient, and remains stable across its qualified temperature range of –65 °C to +175 °C. The JANTX1N4106C-1 achieves this precision via metallurgical bonding and MIL-PRF-19500/435 process controls.

Is JANTX1N4106C-1 RoHS compliant?

No, JANTX1N4106C-1 is not RoHS compliant. Per Microsemi documentation, RoHS-compliant versions (e.g., with "e3" suffix) are available only for commercial-grade variants, not for MIL-qualified JANTX-level devices like JANTX1N4106C-1. The JANTX1N4106C-1 uses traditional tin-lead plating per MIL-STD-750 method 2026 to ensure solderability and reliability under military environmental stress.

What is the maximum Zener current (IZM) for JANTX1N4106C-1?

The maximum Zener current (IZM) for JANTX1N4106C-1 is 40 mA, derived from its 500 mW power rating and 12 V nominal Zener voltage (P = V × I → I = 0.5 W / 12 V ≈ 41.7 mA, rounded down to 40 mA per datasheet). This value is specified at 25 °C lead temperature and must be linearly derated above 50 °C per the published power derating curve. The JANTX1N4106C-1 sustains this current with 200 Ω dynamic impedance and <0.05 µA leakage at 9.2 V.

Does JANTX1N4106C-1 require heatsinking in typical applications?

JANTX1N4106C-1 typically does not require external heatsinking when operated within its 500 mW rating and with ≥3/8 inch (10 mm) lead length from the body, achieving RθJL = 250 °C/W. Its DO-35 package relies on lead conduction for thermal dissipation; PCB copper area provides marginal benefit due to hermetic glass construction. For sustained 40 mA operation at elevated ambient temperatures, verifying junction temperature using Tj = TL + (P × RθJL) is recommended. The JANTX1N4106C-1's rated thermal resistance makes discrete heatsinking unnecessary in most MIL-standard layouts.

How does the noise performance of JANTX1N4106C-1 compare to lower-voltage Zeners in the same family?

JANTX1N4106C-1 exhibits 1 µV/√Hz noise density at 12 V - significantly lower than the 40 µV/√Hz typical for 6.8 V and higher Zeners in the series, and orders of magnitude quieter than sub-6 V devices. This low noise arises from its higher breakdown voltage mechanism and optimized metallurgical bond, making the JANTX1N4106C-1 especially suitable for precision analog references where noise directly limits resolution. Microsemi confirms this value is measured at 250 mA IZT in the 1–3 kHz band.