Microchip Technology JANS1N4570AUR-1/TR

Overview

JANS1N4570AUR-1/TR from Microsemi is a hermetically sealed, temperature-compensated Zener reference diode in DO-213AA (MELF) glass package, rated for 1.0 mA test current, ±100 mV voltage stability over −55°C to +100°C, and 100 Ω dynamic impedance - used in precision voltage references for aerospace-grade power regulation and analog signal conditioning.

For engineers reviewing the JANS1N4570AUR-1/TR datasheet, JANS1N4570AUR-1/TR pinout, JANS1N4570AUR-1/TR application, or JANS1N4570AUR-1/TR equivalent, key selection criteria include its MIL-PRF-19500/452 qualification, low TC of ±0.01%/°C, 500 mW power rating at +50°C, and operation in high-reliability analog reference circuits requiring long-term stability under thermal cycling.

Technical Context

This device implements metallurgically bonded, double-plug Zener construction to minimize voltage drift and hysteresis. Its temperature compensation is achieved via internal series-connected junctions that counteract intrinsic TC variation across −55°C to +100°C.

It operates within a low-current range (1.0 mA nominal), exhibits 2 µA reverse leakage at 3 V, and maintains voltage stability per JEDEC Std. 5 - with maximum deviation bounded at ±100 mV across full temperature range, not just endpoint limits.

Key Specifications

Pinout & Package

Package: DO-213AA (MELF, SOD-80, LL34), hermetically sealed glass case, axial leadless surface-mount configuration. Cathode identified by single dark band.

Key Features

Applications

Equivalent & Alternatives

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

Compared with JANS1N4570AUR-1/TR, JANTXV1N4570AUR-1 offers reduced qualification rigor while retaining full electrical equivalence, whereas CDLL4570A trades hermetic reliability for lower cost and broader commercial availability - both require no circuit redesign but differ in environmental assurance scope.

Availability

JANS1N4570AUR-1/TR is available at Aetrix Electronics and suitable for avionics power monitoring, satellite ADC reference, missile guidance biasing, and nuclear instrumentation calibration requiring stable component supply across extended temperature and radiation environments.

Supply support for JANS1N4570AUR-1/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) is a U.S.-based semiconductor company specializing in high-reliability analog, RF, and radiation-hardened components for defense, aerospace, and industrial markets.

JANS1N4570AUR-1/TR belongs to the CDLL45xxA family of temperature-compensated Zener references, designed specifically for precision voltage regulation in mission-critical systems where long-term stability and environmental survivability are non-negotiable.

FAQ

What is the Zener voltage tolerance for JANS1N4570AUR-1/TR?

JANS1N4570AUR-1/TR has a Zener voltage of 10.0 V with a tolerance of ±5% at 1.0 mA test current, as specified in the manufacturer's electrical characteristics table. This tolerance applies under standard conditions (25°C) and remains bounded within ±100 mV across the full −55°C to +100°C operating range per JEDEC Std. 5. The JANS1N4570AUR-1/TR achieves this via double-plug metallurgical construction and temperature compensation.

Is JANS1N4570AUR-1/TR compatible with surface-mount assembly processes?

Yes, JANS1N4570AUR-1/TR uses the DO-213AA (MELF) glass package, which is a leadless surface-mount configuration qualified for reflow soldering per MIL-STD-202. Its axial symmetry and hermetic glass body allow compatibility with standard SMT pick-and-place and infrared reflow profiles - though thermal mass requires careful ramp rate control. The JANS1N4570AUR-1/TR is explicitly designated for surface-mount use in the product family documentation.

What is the maximum operating temperature for JANS1N4570AUR-1/TR?

JANS1N4570AUR-1/TR has an operating temperature range of −65°C to +175°C per its Absolute Maximum Ratings, but its specified electrical performance (including ±100 mV voltage stability and ±0.01%/°C TC) is guaranteed only from −55°C to +100°C. Operation beyond +100°C may maintain functionality but voids parametric guarantees. The JANS1N4570AUR-1/TR is screened and tested to perform reliably within the −55°C to +100°C range under MIL-PRF-19500/452.

Does JANS1N4570AUR-1/TR require external heat sinking?

No, JANS1N4570AUR-1/TR does not require external heat sinking under typical operating conditions. With a 500 mW power dissipation rating at +50°C and 4 mW/°C derating above that, it dissipates only 10 mW at 10 V × 1 mA - well within safe limits even at +100°C (derated to 300 mW). Its DO-213AA glass package relies on PCB copper area for thermal conduction. The JANS1N4570AUR-1/TR is optimized for low-power reference use, not power regulation.

How does the double-plug construction benefit JANS1N4570AUR-1/TR?

The double-plug construction in JANS1N4570AUR-1/TR uses two metallurgically bonded Zener junctions in series to cancel intrinsic temperature coefficients - achieving ±0.01%/°C stability. This structure reduces hysteresis and long-term drift caused by thermal stress and aging, critical for applications like satellite calibration where reference integrity must persist over decades. The JANS1N4570AUR-1/TR leverages this architecture to meet stringent MIL-PRF-19500/452 requirements.