Annealed Soft Magnetic 1J85 Wire for High-Frequency Inductors and Chokes

Product Description

Introduction
Annealed 1J85 Soft Magnetic Wire is an optimized solution for high-frequency electronic components such as chokes, inductors, and precision sensors. Known for its soft magnetic properties and minimal coercivity, 1J85 wire undergoes controlled annealing to improve grain structure and maximize permeability. Sometimes referred to as molybdenum permalloy wire or annealed FeNi wire, it is particularly effective in reducing electromagnetic interference and core losses in fast-switching systems.

Material Overview

• Core Composition: Iron-Nickel-Molybdenum alloy

• Annealed State: Fully soft annealed in hydrogen

• Diameter Range: 0.1mm – 2.0mm

• Surface Finish: Clean, oxide-free, silver-gray

• Permeability: Ultra-high (>70,000)

• Application Temperature: Up to 450°C

Target Applications

• Switched-mode power supplies (SMPS)

• RF inductors and chokes

• Microcurrent sensors

• Automotive electronics

Operating Mechanism
1J85 wire’s effectiveness lies in its quick response to rapidly changing magnetic fields. The annealing process reduces internal stresses and aligns the magnetic domains, allowing for stable inductance and minimal loss even at higher frequencies. It supports efficient energy transfer and clean signal response in switching circuits.

Specification Sheet

• Low coercivity for energy-efficient magnetics

• High-frequency stability

• Suitable for tight-tolerance electronic coils

• Extended lifespan in thermal cycling

• Enhanced consistency from hydrogen annealing process

FAQ
Q1: What’s the benefit of annealing for 1J85 wire?
A1: Annealing improves magnetic properties and stress relief, resulting in higher permeability and lower loss.

Q2: Can I order small diameters like 0.1mm?
A2: Yes, fine gauges down to 0.05mm can be custom-manufactured.

Q3: What is the packaging standard for export?
A3: Typically vacuum-packed spools or anti-static sealed bags, with labels and test certificates.