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Genius Transformers

Ferrite transformers, common-mode chokes and custom inductors wound to print for power conversion. Manufacturing ferrite transformers, chokes and inductors in Pune since 2017.

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  • IndiaMART

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  • Common Mode Chokes
  • Drum Core Chokes
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  • Sunday: Closed

Contact

FactoryPlot No. 77/A, Gat No. 583, Ground Floor, Sai Tirth Niwas, Pantnagar Colony No. 1, Jadhavwadi, Chikhali, Pune - 412114, Maharashtra, India
Phone+91 90112 10377
Emailgeniustransformer@gmail.com

© 2026 Genius Transformers. All rights reserved.

Ferrite · Chokes · Custom windings · Pune

Contact
  • Request a quoteSend your spec — priced in 24h
  • WhatsAppFastest reply — chat with sales
  • Call the factory+91 90112 10377
  • Email usgeniustransformer@gmail.com
  • Navigate to factoryPune, Maharashtra
Talk to an engineer
Skip to content
Genius Transformers
  • Home
  • Products
  • Guides
  • About
  • Contact
+91 90112 10377
QuoteGet a quote
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  1. Home
  2. Products
  3. Drum Core Chokes
  4. Copper Drum Coil / 8×12
Drum Core Chokes8×12

Copper Drum Coil / 8×12

Copper drum-coil inductor on an 8×12 mm core for filtering and energy storage in compact assemblies.

Core
8×12 mm drum
Conductor
Copper
Mounting
THT radial
Application
Filtering, DC-DC
Get a QuoteWhatsApp
  • 2–3 week lead time
  • Prototype to bulk
  • Wound to your spec

Part outline

8×12 mm drum
Outline of Copper Drum Coil / 8×12, drawn from its published specification.
  1. 1Core8×12 mm drum
  2. 2MountingThrough-hole
  3. 3OrientationHorizontal

Construction

Ferrite Drum Core 8×12, Copper Winding

Configuration · 8×12

Shielding

Where does the flux go?

An unshielded drum is cheaper and harder to saturate, because its return flux closes through the air around it. That is fine until the part next to it is an ADC input.

Unshielded

Cheaper, higher peak current
IC
The return flux closes through the air around the part. That open path saturates late and costs less to make — fine wherever the neighbours can tolerate the field.

Shielded

Contained field
IC
A ferrite resin shield closes the magnetic circuit, so almost nothing escapes the body. Choose this when the inductor sits near an antenna, an ADC input or a current-sense trace.
Stray field shown dashed · the small block is a neighbouring component

Specification

Published figures describe the standard build. Every part is wound to order — send your exact requirement and we will confirm the specification on the quotation.

Core
8×12 mm drum
Conductor
Copper
Mounting
THT radial
Application
Filtering, DC-DC

Typical applications

Drum core chokes for DC filtering and energy storage in compact assemblies, available in through-hole and surface-mount formats.

  • Consumer power
  • Set-top boxes
  • Networking
  • Instrumentation
  • Lighting

More Drum Core Chokes

View all 10
  • Drum Core Chokes

    Drum Core / 33 µH / Shielded

    Shielded drum-core inductor around 33 µH for compact DC-DC stages where EMI from an open drum is unacceptable.

    Inductance: 33 µH class

    View specification
  • Drum Core Chokes

    Drum Core 10x12

    Medium size 10x12 drum core inductor. Offers a good balance of inductance and current rating.

    Inductance: 3.3uH - 52.0uH

    View specification
  • Drum Core Chokes

    Drum Core 12x15

    Large 12x15 drum core inductor for higher power applications requiring significant energy storage.

    Inductance: 3.0uH - 120uH

    View specification

Start a project

Need Copper Drum Coil / 8×12 to a different specification?

Send your inductance, turns ratio, current rating and mechanical envelope — we will come back with a design and a price.

Request a QuoteChat on WhatsApp
  • +91 90112 10377
  • geniustransformer@gmail.com

Pune, Maharashtra · Replies within 24 hours

Genius Transformers

Ferrite transformers, common-mode chokes and custom inductors wound to print for power conversion. Manufacturing ferrite transformers, chokes and inductors in Pune since 2017.

Find us on

  • IndiaMART

Products

  • All Products
  • Ferrite Transformers
  • Common Mode Chokes
  • Drum Core Chokes
  • Power Inductors
  • Toroidal Power Inductors
  • Rod Core Chokes
  • Line Filters
  • Solenoid Coils
  • Air Core Inductors

Company

  • About Us
  • Contact
  • Privacy Policy
  • Terms of Use
  • WhatsApp Enquiry

Hours

  • Monday – Saturday: 9:00 AM – 6:30 PM
  • Sunday: Closed

Contact

FactoryPlot No. 77/A, Gat No. 583, Ground Floor, Sai Tirth Niwas, Pantnagar Colony No. 1, Jadhavwadi, Chikhali, Pune - 412114, Maharashtra, India
Phone+91 90112 10377
Emailgeniustransformer@gmail.com

© 2026 Genius Transformers. All rights reserved.

Ferrite · Chokes · Custom windings · Pune

Contact
  • Request a quoteSend your spec — priced in 24h
  • WhatsAppFastest reply — chat with sales
  • Call the factory+91 90112 10377
  • Email usgeniustransformer@gmail.com
  • Navigate to factoryPune, Maharashtra
Talk to an engineer