Lodestone Pacific

What Lodestone Pacific does

Lodestone Pacific is a privately held US manufacturer and distributor specializing in plastic and magnetic component accessories for the transformer, inductor, and power electronics industries. The company designs and supplies toroid mounts and headers (through-hole and surface-mount, in thermoset and thermoplastic engineering plastics ranging from 0.010 to 3.00 inch diameter), transformer bobbins and coil forms in standard EE, EF, EER, ETD, PQ, EFD, ER, RM, EP, EI, UI, and UIM configurations, shielded coil forms for tunable RF applications, anti-static parts trays compliant with EIA-541, and a full line of electrical insulation tape. It is also a factory-authorized distributor for the magnetic core lines of Micrometals (iron powder cores), Arnold (alloy powder cores), and Fair-Rite (ferrite and EMI/RFI suppression cores), maintaining an inventory exceeding 5 million cores, and the US distributor for P.Leo insulating tapes.

Manufacturing is executed through a long-standing strategic partnership with Nanjida (NJD) in Dongguan, China, which operates 40+ injection molding machines (50-350 ton range), 25+ semi-automatic terminal insertion machines, and holds ISO-9001 and TS-16949 certifications alongside UL File E304843 with material lot traceability. Custom molding services include 3D printed prototypes delivered within one week and custom tooling completed in 3-4 weeks, supported by in-house CAE/CAD/CAM, CNC, EDM, and Wire EDM capabilities. Lodestone Pacific does not produce finished transformers or inductors; it sells components, materials, and tooling into manufacturers who assemble end products.

The commercial model is B2B and quote-based, with no public pricing. Revenue is generated through four hardware sales streams: magnetic component distribution, custom molding and tooling services, P.Leo transformer tape distribution, and finished component sales. Go-to-market combines direct sales from the Anaheim, California headquarters (with additional sales offices in Chicago and Rochester, and a Shenzhen, China office) plus a network of authorized distributors covering the United Kingdom and Europe (Power Magnetics), Germany (Acal BFi), Hong Kong (P.leo), and Southern California (Astron Electronics). Customers span transformer/inductor manufacturers, power electronics producers, and end-user industries including medical, communications, audio/RF, industrial, and military/aerospace, with named end customers including NASA JPL, Northrop Grumman, GE Aviation, Honeywell, Siemens, Qualcomm, Vishay, Eaton, Emerson, Coilcraft, Sumida, Tamura, and ITT. Marketing relies on technical literature, downloadable catalogs, online selector and quote tools, and direct sample requests.

Name

Lodestone Pacific

Legal name

Lodestone Pacific

Website

https://lodestonepacific.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Short description

Lodestone Pacific is a US manufacturer and distributor of magnetic component accessories — toroid mounts, bobbins, shielded coil forms, transformer tape, and magnetic cores — serving transformer, inductor, and power electronics manufacturers globally, with manufacturing in Dongguan, China via its Nanjida partnership.

Ownership category

akta.pro rank

Product category

Magnetic Components Manufacturing

NAICS

Other Electronic Component Manufacturing (334419), Electrical Equipment Manufacturing (33531), All Other Electrical Equipment and Component Manufacturing (33599)

SIC

Electronic Coils, Transformers & Other Inductors (3677), Power, Distribution & Specialty Transformers (3612), Electronic Components & Accessories (3670)

akta.pro primary industry

Transformers & Magnetics (Power/Signal) (HDAHANAD)

Keywords

• Magnetic components manufacturing
• Toroid mounts and headers
• Transformer bobbins coil forms
• Magnetic core materials distribution
• Custom plastic injection molding

Headquarters

HQ city

Anaheim

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Magnetic Component Distribution: Distribution of magnetic core materials including iron powder cores, alloy powder cores, and ferrite cores from authorized manufacturers (Micrometals, Arnold, Fair-Rite).
2. Custom Molding and Tooling: Custom plastic molding and tooling services for electronic components including toroid mounts, bobbins, and transformer components.
3. Transformer Tape Distribution: Authorized distributor for P.Leo insulation tape products including polyester film, polyimide film, glass cloth, and specialty tapes.
4. Finished Component Sales: Sale of finished products including toroid mounts, headers, shielded coil forms, bobbins, and anti-static parts trays.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels4 records

Core offering

Lodestone Pacific manufactures and distributes magnetic component accessories for the electronics industry, including toroid mounts and headers, transformer bobbins and coil forms, shielded coil forms, anti-static parts trays, and custom-molded plastic components. It is also a factory-authorized distributor of magnetic core materials (iron powder, nickel powder, ferrite cores from Micrometals, Arnold, and Fair-Rite) and P.Leo transformer insulating tape. Production occurs at a partner facility in Dongguan, China, with global warehouses and authorized distributors serving transformer, inductor, and power-electronics OEMs.

Product overview

Lodestone Pacific is a manufacturer and distributor serving the magnetics segment of the electronics industry. The product portfolio centers on magnetic component accessories and materials: Toroid Mounts and Headers (surface mount and through-hole mounts in thermoset/thermoplastic plastics for toroids .010 to 3.00 inches), Bobbins and Coil Forms (transformer bobbins in various shapes including EE, EF, EER, ETD, PQ, EFD, ER, RM, EP, EI, UI configurations), Magnetic Core Materials (iron powder cores, alloy powder cores, ferrite cores from Micrometals/Arnold/Fair-Rite with 5M+ units in inventory), Transformer Tape (electrical insulating tapes including Mylar, Kapton, glass cloth variants), Anti-Static Parts Trays (EIA-541 compliant component trays), Shielded Coil Forms (variable tunable coil forms for RF applications), and Custom Molding and Tooling services. The company operates manufacturing in Dongguan, China with warehouses in North America, Europe, China, Hong Kong, and the Philippines.

Differentiator

Problem solved

Functional benefit

Products and services

• Toroid Mounts and Headers RoHS and REACH compliant surface-mount and through-hole toroid mounts and headers in thermoset and thermoplastic engineering plastics, supporting toroid diameters from 0.010 to 3.00 inches. Used by transformer and inductor manufacturers mounting toroidal cores onto PCBs.
• Bobbins and Coil Forms RoHS, REACH, and VDE compliant transformer bobbins and wire-winding coil forms for through-hole and surface-mount applications, available in EE, EF, EER, ETD, PQ, EFD, ER, RM, EP, EI, UI, and UIM shapes. Used by transformer manufacturers as winding formers for magnetic cores.
• Magnetic Core Materials Factory-authorized distribution of more than 5 million iron powder cores, nickel powder cores, and ferrite cores in stock, including toroids, E-Cores, PQ, RM, EP, ETD, ER, EFD cores, shield beads, snap-it beads, multi-aperture cores, rods, balun cores, and SMD beads from Micrometals, Arnold, and Fair-Rite. Used as the magnetic flux path inside transformers and inductors.
• Transformer Tape Electrical insulating tapes for coils and transformers, including polyester film (Mylar), polyimide film (Kapton), glass cloth, PEN film, Nomex paper, acetate cloth, and PPS film tapes. Distributed as the authorized US distributor for P.Leo Tape products. Used as interlayer and outer insulation in transformer winding.
• Anti-Static Parts Trays Anti-static, RoHS compliant PET trays meeting EIA-541 standards, used to protect terminals of wound components during transportation and winding and to facilitate pick-and-place operations on production lines.
• Shielded Coil Forms Variable shielded coil forms used to build adjustable, tunable inductors, transformers, IFT coils, oscillators, narrow-band RF filters, and broadband RF filters. Compatible with popular Toko coil sizes, offering high Q and superior temperature stability for RF designers.
• Custom Molding and Tooling Custom plastic molding and tooling service including 3D printed prototypes in one week, custom tooling in 3–4 weeks, CAE/CAD/CAM engineering, CNC/EDM/Wire-EDM machining, transfer molding, injection molding, and semi-automatic terminal insertion. Performed at the Nanjida-partnered facility in Dongguan, China. Used by magnetics OEMs needing proprietary bobbins, mounts, or terminal-inserted components.

Named customers13 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Nanjida (Dongguan, China)coreStrategic or Co-development PartnerStrategic Partnership creating production efficiencies, ensuring superior quality and world-wide world-class customer service. Manufacturing facility in Dongguan produces toroid mounts and headers.
• Astron ElectronicsminorChannel Partner/ Reseller/ DistributorManufacturers Representative serving Southern California. Engineering focused distributor for Lodestone Pacific products.
• MicrometalscoreTechnology or IntegrationFactory authorized magnetic core distributor for iron powder cores, alloy powder cores, and related products.
• Arnold (Micrometals)coreTechnology or IntegrationFactory authorized distributor for Arnold alloy powder cores.
• Fair-Rite ProductscoreTechnology or IntegrationFactory authorized distributor for Fair-Rite EMI/RFI suppression cores including shield beads, snap-it beads, toroids, multi aperture cores, rods, balun cores, and SMD beads.
• P.leocoreTechnology or IntegrationAuthorized distributor for P.Leo Tape products in the United States. Products include polyester film, polyimide film, and specialty insulation tapes.
• Power Magnetics (UK)coreChannel Partner/ Reseller/ DistributorAuthorized distributor for Lodestone Pacific Toroid Mounts & Shielded Coil Forms in United Kingdom. Also distributes Iron Powder Cores, Alloy Powder Cores, Triple Insulated Wire, Power Ferrites, and Bobbins.
• P.leo (Hong Kong)coreChannel Partner/ Reseller/ DistributorAuthorized distributor for P.leo Insulating Tape in Hong Kong. Also distributes Iron Powder Cores, Triple Insulated Wire, Power Ferrites, and Insulation Products.
• Acal BFi (Germany)coreChannel Partner/ Reseller/ DistributorAuthorized distributor in Germany. Also distributes Magnetic Components, Relays, Connectors & Cables, Photonics, Semiconductors, Switches, and LED Devices.

Scale indicators8 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Coilcraft: Major U.S. manufacturer of inductors, transformers and RF components. Both companies serve overlapping magnetics customers; Coilcraft sources magnetic cores and accessories, placing it as a customer–peer along Lodestone's core line.
• Hammond Manufacturing: Manufacturer of transformers, bobbins, coil forms, enclosures and related magnetics hardware. Closest analog to Lodestone's custom bobbin and coil-form business, with broader electrical hardware exposure.
• Prem Magnetics: U.S. manufacturer of custom transformers, inductors and chokes for industrial and medical markets. Competes with Lodestone-served transformer makers and overlaps on magnetics accessories and custom winding.
• Sumida: Global manufacturer of inductors, transformers and power magnetics for automotive and industrial markets. Comparable product categories and customer base; a Lodestone customer and direct competitor in magnetics components.
• Standex Electronics: Manufacturer of magnetics, reed switches and sensors with a custom transformer/bobbin business. Comparable in scale and customer overlap, particularly in industrial and aerospace.

Broad incumbents

• Vishay Intertechnology: Broad-line discrete semiconductor and passive component manufacturer, including a sizable magnetics portfolio. Overlaps with Lodestone on transformer/inductor components and competes for the same industrial and defense customers.
• TDK Corporation (including EPCOS): Global magnetics giant producing ferrite cores, inductors, transformers and EMC components. Competes with Lodestone's distributed core portfolio and many of its downstream customers' own magnetics supply.
• Ferroxcube (Yageo): Leading ferrite core and accessories manufacturer. Competes with Lodestone's distributed Fair-Rite ferrite cores and supplies many of the same transformer/inductor OEMs.
• Würth Elektronik: Large electronic component manufacturer with a major magnetics line (inductors, transformers, chokes) and global catalog distribution. Direct competitor on magnetics products and on broad-based distribution reach.

Regional players

• Fair-Rite Products: U.S. ferrite core and EMI/RFI suppression component manufacturer. Functions as both a Lodestone supplier and a competitive source for ferrite cores in North America; competes for the same transformer/inductor customers.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/lodestoneinfo

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Lodestone Pacific