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Electronic Coils, Transformers, and Other Inductors
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SIC Industry 3677   —   NAICS² Industry  334416

SIC [1987]  →  Manufacturing  →  Electronic & Other Electric Equipment  →  Electronic Components & Accessories  →  Electronic coils & transformers §

9  Registrants
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  ·   List them ordered by how active they’ve been   ·   List only Registrants currently in this Industry

As Of     Filer / IssuerLatest Filings     SIC
In ascending orderAs: Filer    Re: Issuer    
Active (in the Past Year, since 10/6/21) in Industry 3677:
Bel Fuse Inc./NJ  10-Q  4  3677
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Exro Technologies Inc.  D New Filing in the Past Week!  F-X  3677
 — 2 — 
Active, but no longer SEC-assigned to, nor self-declared in, Industry 3677:
Microwave Filter Co. Inc./NY  10-Q OLD  4  3679
 — 1 — 
No Activity (in the Past Year) as a Registrant:
All Filings are OLD    
More...  List all, including 6 Inactive Registrants 

Businesses & Products of SIC Industry 3677
  • Baluns
  • Coil windings, electronic
  • Coils, chokes and other inductors, electronic
  • Constant impedance transformers
  • Coupling transformers
  • Flyback transformers
  • Transformers, electronic types
  • Transformers: power supply electronic type

Description of SIC Industry 3677 — Electronic Coils, Transformers, and Other Inductors §
Establishments primarily engaged in manufacturing electronic coils, transformers, and inductors.  Establishments primarily engaged in manufacturing electrical transformers are classified in Industry 3612; those manufacturing transformers and inductors for telephone and telegraph apparatus are classified in Industry 3661, and those manufacturing semiconductors and related devices are classified in Industry 3674.

§  SEC Filings-Review Office (FRO) Assigned Filings-Review Responsibility
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OM – Office of Manufacturing

²  North American Industry Classification System (NAICS)

SIC [1987] Industry 3677     ⇒     NAICS [2012] Industry Codes

NAICS Code  North American Industry    SIC Codes
In ascending order
334416Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing  ⇒  36753676,  3677

Global Industry Classification Standard    S&P DJI  /  MSCI 

SIC [SEC] Industry 3677            GICS [2018] Sector  →  Sub-Industry  
Assigned by the SEC
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Assigned by S&P Dow Jones Indices / MSCI

  Sector   #    →    Sub-Industry   #        
Information Technology   1  
 # of Major-Index Companies in both this SIC Industry and the GICS Sector / Sub-Industry.


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