Microchip Technology JANTXV1N4616C-1

Overview

JANTXV1N4616C-1 from Microsemi is a 500 mW, 2.2 V Zener voltage regulator diode in DO-35 (DO-204AH) axial-glass package, qualified to JANTXV level per MIL-PRF-19500/435, with ±2% voltage tolerance, 1300 Ω dynamic impedance at 250 mA test current, and -0.075 %/°C temperature coefficient - used for precision low-voltage reference and regulation in military power supply monitoring circuits.

For engineers reviewing the JANTXV1N4616C-1 datasheet, JANTXV1N4616C-1 pinout, JANTXV1N4616C-1 application, or JANTXV1N4616C-1 equivalent, key selection criteria include its MIL-qualified reliability grade, low-voltage Zener stability under thermal stress, metallurgically bonded construction for radiation hardness, and noise density of 1 µV/√Hz at 2.2 V.

Technical Context

This device operates as a reverse-biased Zener regulator with cathode band marking polarity, requiring banded end positive relative to anode for regulation. Its metallurgical bond ensures stable junction behavior across -65 °C to +175 °C operating range and inherent radiation hardness per Microsemi MicroNote 050.

Thermal resistance is 250 °C/W junction-to-lead (at 10 mm lead length) and 300 °C/W junction-to-ambient on FR4 board; power derating begins linearly at 50 °C ambient, reaching zero dissipation at 175 °C - critical for high-reliability embedded systems where thermal margin is constrained.

Key Specifications

Pinout & Package

DO-35 (DO-204AH) hermetically sealed axial-leaded glass package with tin-lead or RoHS-compliant matte-tin plating; cathode indicated by single black band; weight ≈ 0.2 g; body diameter 1.42–2.29 mm, body length 3.56–5.08 mm, lead length 25.4–38.1 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with JANTXV1N4616C-1, the 1N4616US-1 offers identical regulation performance in a surface-mount form factor - enabling higher-density layouts but eliminating field-replaceability - while JANTXV1N4615C-1 provides a 0.2 V lower reference for designs requiring tighter voltage alignment with legacy 2.0 V logic families.

Availability

JANTXV1N4616C-1 is available at Aetrix Electronics and suitable for avionics power monitoring, satellite sensor biasing, tactical radio RF front-end, nuclear plant control instrumentation, and other high-reliability applications requiring stable component supply across extended temperature and radiation environments.

Supply support for JANTXV1N4616C-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, radiation-hardened, and aerospace-grade components.

The 1N4614–1N4627 series was designed specifically for military and space applications demanding MIL-qualified Zener regulation with low noise, stable tempco, and hermetic packaging - targeting power supply reference, sensor biasing, and safety-critical analog circuits.

FAQ

What is the Zener voltage tolerance of JANTXV1N4616C-1?

JANTXV1N4616C-1 has a nominal Zener voltage of 2.2 V with ±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 applies across the full operating temperature range of -65 °C to +175 °C per MIL-PRF-19500/435 screening.

Is JANTXV1N4616C-1 RoHS compliant?

JANTXV1N4616C-1 is not RoHS compliant; the "e3" RoHS designation is only available on commercial-grade versions of this family. As a JANTXV-qualified part, it uses traditional tin-lead plating per MIL-STD-750 Method 2026, which meets military solderability and reliability requirements but contains lead above RoHS thresholds.

What is the maximum power dissipation of JANTXV1N4616C-1 at 75 °C ambient?

At 75 °C ambient, JANTXV1N4616C-1 is rated for 375 mW maximum power dissipation. Per the linear derating curve in the datasheet, the 500 mW rating begins derating at 50 °C, decreasing by 2.5 mW/°C until reaching zero at 175 °C - resulting in (500 mW − 2.5 mW/°C × (75−50)°C) = 375 mW.

Does JANTXV1N4616C-1 require heatsinking in typical PCB layouts?

JANTXV1N4616C-1 does not require external heatsinking in standard FR4 layouts with 4 mm² copper pads and 1 mm track width, as its thermal resistance junction-to-ambient is 300 °C/W. At 500 mW dissipation, this yields a 150 °C junction rise above ambient - acceptable within its -65 °C to +175 °C rating. However, heatsinking is recommended if ambient exceeds 50 °C or power approaches 400 mW continuously.

How is polarity marked on JANTXV1N4616C-1?

JANTXV1N4616C-1 uses a single black cathode band on the glass body to indicate polarity. The banded end is the cathode and must be held positive relative to the unbanded (anode) end for proper Zener regulation. This marking is visible under standard visual inspection and aligns with JEDEC DO-35 polarity conventions.