Microchip Technology 1N4567E3/TR

Overview

1N4567E3/TR from Microsemi is a 6.4 V temperature-compensated Zener reference diode in DO-7 (DO-204AA) glass axial-leaded package, rated for 0.5 mA test current, ±0.002 %/°C temperature coefficient (±0.13 mV/°C), and 200 Ω dynamic impedance at I_ZT. It delivers stable voltage reference performance across -55°C to +100°C operating range and is used in precision instrumentation calibration circuits.

For engineers reviewing the 1N4567E3/TR datasheet, 1N4567E3/TR pinout, 1N4567E3/TR application, or 1N4567E3/TR equivalent, key selection criteria include its ultra-low TC, tight 6.4 V nominal tolerance, hermetic DO-7 packaging, military-grade qualification path, and ESD insensitivity per MIL-STD-750 Method 1020.

Technical Context

This device belongs to Microsemi's JEDEC-registered 1N4565–1N4584A-1 series of zero-TC Zener references, engineered with internal metallurgical bonding to minimize thermal hysteresis and long-term drift. Its 6.4 V nominal voltage is optimized for bandgap-referenced circuit alignment and low-noise analog subsystems.

The 1N4567E3/TR operates at 0.5 mA Zener test current, delivering <2.0 µA reverse leakage at 3 V and maintaining 200 Ω dynamic impedance-critical for minimizing load regulation error in high-impedance reference buffers and feedback networks.

Key Specifications

Pinout & Package

DO-7 (DO-204AA) hermetically sealed glass package with axial leads; cathode identified by black band; polarity requires banded end to be positive relative to unbanded end during operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 1N4567A and BZX85C6V2, the 1N4567E3/TR uniquely combines ultra-low TC, hermetic DO-7 reliability, and EIA-296 tape-and-reel compatibility-making it the sole option for automated production of high-stability reference circuits requiring MIL traceability and sub-millivolt thermal drift.

Availability

1N4567E3/TR is available at Aetrix Electronics and suitable for high-precision calibration systems, aerospace sensor conditioning modules, and downhole logging electronics requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for 1N4567E3/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 aerospace, defense, and industrial markets.

The 1N4565–1N4584A-1 series was designed specifically for applications demanding ultra-stable voltage references under extreme thermal and environmental stress-especially where long-term drift and ESD robustness are critical.

FAQ

What is the Zener test current for 1N4567E3/TR?

The 1N4567E3/TR is specified at a Zener test current (I_ZT) of 0.5 mA. This current level is critical to achieve its guaranteed ±0.002 %/°C temperature coefficient and 200 Ω dynamic impedance. Operating significantly above or below this value increases TC deviation and impedance-so biasing circuits must be designed to maintain ~0.5 mA through the 1N4567E3/TR under all operating conditions.

Does 1N4567E3/TR have military qualification options?

Yes, the 1N4567E3/TR is part of the JEDEC-registered 1N4565–1N4584A-1 family qualified to MIL-PRF-19500/452. By adding prefixes such as JANTX or JANTXV and the "-1" suffix (e.g., JANTX1N4567A-1), users can obtain fully screened, lot-traceable versions meeting MIL-STD-883 testing requirements-essential for defense and space programs requiring documentation and reliability assurance.

What does the "TR" suffix mean in 1N4567E3/TR?

The "TR" suffix in 1N4567E3/TR indicates EIA-296 compliant tape-and-reel packaging. This allows automated surface-mount placement equipment to handle the axial-leaded DO-7 device-enabling high-throughput assembly while preserving the hermetic reliability of the glass package. The "E3" denotes RoHS-compliant matte tin lead plating per J-STD-609.

Can 1N4567E3/TR replace standard 6.2 V Zeners like BZX85C6V2?

No-1N4567E3/TR is not a drop-in replacement for BZX85C6V2. While both are Zener diodes, the 1N4567E3/TR provides 6.4 V ±5% with ±0.002 %/°C TC and DO-7 hermetic packaging, whereas BZX85C6V2 offers 6.2 V ±5% with ±0.06 %/°C TC in plastic DO-41. Substituting them compromises thermal stability and long-term reliability in precision applications; redesign of biasing and layout is required.

Is 1N4567E3/TR sensitive to electrostatic discharge (ESD)?

No, the 1N4567E3/TR is nonsensitive to ESD per MIL-STD-750 Method 1020. Its internal metallurgical bonding and hermetic glass construction eliminate the need for external ESD protection during handling, PCB assembly, or field operation-reducing bill-of-materials cost and improving design simplicity compared to standard Zeners requiring TVS clamping.