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Industry · SIC 3677

Electronic Coils, Transformers & Other Inductors

4 tracked issuers filing with the SEC under this industry classification.

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Issuers

4

Recent filings

40

SIC code

3677

Industry overview

Electronic Coils, Transformers & Other Inductors

Electronic Coils, Transformers & Other Inductors producers in SIC 3677 design magnetics that manage power conversion, signal integrity, and filtering for automotive EV platforms, aerospace avionics, medical devices, industrial automation, telecom/5G gear, consumer electronics, and renewable energy inverters. Core products span surface-mount inductors, common-mode chokes, current sensors, and custom high-frequency transformers, often paired with design services to meet EMI, thermal, and reliability specs. Typical customers demand tight tolerance, low loss, and compact footprints, driving investment in ferrite and powder materials, automated winding, and co-development with wide-bandgap SiC/GaN power stages. Major risks include copper and rare-earth price volatility, trade and export controls, UL/IEC safety certifications, RoHS/REACH substance compliance, and liability from field failures or recalls. 2024–2025 trends center on miniaturization for wearables, higher efficiency for fast chargers and data centers, grid-hardening components for storage and solar, and reshoring to improve supply resilience. For ongoing disclosures and competitive signals, view SEC filings on Earnings Feed.

Source: Earnings Feed research · Nov 23, 2025

Latest filings

40 filings

Featured issuers

4

Classification

SIC code
3677
Total issuers
4
Recent filings
40

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