What Johanson Dielectrics does

Johanson Dielectrics, Inc. (JDI) is a privately held North American manufacturer of high-reliability multilayer ceramic capacitors (MLCCs) and EMI filtering components, founded in 1965 and operating a primary manufacturing facility in Camarillo, California. The company designs and produces surface mount MLCCs, leaded capacitors, planar array capacitors, ceramic capacitor substrates, and prototyping kits, with differentiated product families including X2Y EMI filters, TANCERAM low-ESR ceramic capacitors, PolyTerm soft-termination devices, BME Mini-Switchmode capacitors, and CapStrate embedded bulk capacitance substrates. Core technical capabilities span dielectric materials engineering (NP0, X7R, X5R, X8R), Base Metal Electrode construction, and specialty geometries rated for operation up to 200°C and voltages to 6kV.

The business serves mission-critical verticals including aerospace, defense and military (DLA Drawing 88011 qualified, ITAR registered, Mil-Standard screening), medical imaging, energy and downhole drilling, automotive/EV (AEC-Q200 qualified AM Series), and commercial/industrial power electronics. Revenue is generated through B2B sales of catalog components, custom-engineered capacitors including variable-pitch geometries, and prototyping kits, distributed via a global authorized distributor network (including Digi-Key), regional sales representatives in North America, Europe, and Asia, and direct factory-supported engineering engagement. The company maintains AS9100-ISO 9001, ISO 14001, CTPAT, UL, and TUV certifications, and operates an affiliate relationship with Johanson Technology under the shared Johanson brand.

Name

Johanson Dielectrics

Legal name

Johanson Dielectrics

Website

https://johansondielectrics.com

Company type

Private

Founded year

1965

Operating status

Operating

Headcount range

251–500 employees

Short description

Johanson Dielectrics manufactures high-reliability multilayer ceramic capacitors and EMI filters in California, serving aerospace, defense, medical, automotive/EV, energy/drilling, and industrial power-electronics OEMs with proprietary X2Y, TANCERAM, PolyTerm, and CapStrate technology families.

Ownership category

akta.pro rank

Product category

Multilayer Ceramic Capacitors (MLCCs)

NAICS

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416)

SIC

Electronic Components, Nec (3679)

akta.pro primary industry

Capacitors (Ceramic/Film/Electrolytic/Tantalum/Supercapacitors) (HDAHANAB)

akta.pro secondary industry

Dielectrics & Insulation Materials (Low-k/High-k/Spin-on/Hardmasks) (HDAHAGAJ)

Keywords

• Multilayer ceramic capacitors
• High reliability MLCCs
• EMI filter capacitors
• High voltage ceramic capacitors
• Automotive grade capacitors

Headquarters

HQ city

Sylmar

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Ceramic Capacitor Sales: Revenue from manufacturing and selling multilayer ceramic capacitors (MLCCs) including surface mount, leaded, planar array, and specialty capacitor products.
2. Custom/Prototype Engineering Services: Custom capacitor design, prototyping kits, and engineering support services for specialized applications.

Pricing tiers

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Johanson Dielectrics manufactures and sells high-reliability multilayer ceramic capacitors (MLCCs) including surface-mount, leaded, planar array, and ceramic substrate form factors, with dielectric ratings from 10 VDC to 5,000 VDC and operating temperatures up to 200°C. The portfolio includes proprietary X2Y EMI filters, TANCERAM tantalum-replacement ceramics, PolyTerm soft-termination parts, BME Mini-Switchmode capacitors, CapStrate embedded bulk-capacitance substrates, and AEC-Q200 automotive-grade parts, sold alongside prototyping kits and custom-engineered variable-pitch capacitor assemblies.

Product overview

Johanson Dielectrics is a North American manufacturer of high-performance ceramic capacitors and related components for power electronics applications. The product portfolio consists of multiple interconnected product lines: Surface Mount MLCCs (including AC Power, AC Safety, High Voltage, High Temperature, Automotive Grade, High Reliability, TANCERAM, PolyTerm, and Tin-Lead variants), Leaded Capacitors (Radial, Switchmode, Mini-Switchmode, BME, Stacked, and Variable Pitch custom solutions), Planar Array/EMI Filters (including X2Y Filters and Discoidals), and Ceramic Capacitor Substrates (CapStrate). The company also provides Design Resources including S21 Plotter and SPICE models, plus Prototyping Kits for EMI and High Voltage applications. These products serve mission-critical industries including aerospace, defense, medical, energy/drilling, automotive, and semiconductor processing, with a focus on high-reliability and harsh environment applications.

Differentiator

Problem solved

Functional benefit

Brands

• TANCERAM: Low ESR ceramic replacement capacitors for tantalum capacitors
• PolyTerm
• Mini-Switchmode
• X2Y EMI Filters
• CapStrate
• CapStrate

Products and services

• AC Power Ceramic Capacitors

Quantifiable outcome

• EMI X2Y filters can replace up to 7 discrete filter components while achieving superior filtering performance
• +3 more outcomes

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Johanson TechnologycoreStrategic or Co-development PartnerAffiliate company dedicated to providing high-quality components, superior customer service, and advanced products. Both companies share the Johanson brand and collaborate on technical resources including shared design tools (S21 Plotter), documentation platforms, and part number search systems.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Johanson Technology: Affiliate company under the Johanson brand offering complementary RF and high-frequency ceramic capacitors. Closely comparable in product portfolio, branding, manufacturing philosophy, and target customers (aerospace, defense, medical); the two entities share design tools and part numbering systems.
• Vishay Intertechnology: Diversified manufacturer of discrete semiconductors and passive components including a broad MLCC and capacitor portfolio serving aerospace, defense, medical, automotive, and industrial markets — directly comparable mid-sized peer with overlapping customer base and qualification profile.
• Kyocera AVX: Manufacturer of MLCCs, tantalum capacitors, and specialty passive components with significant aerospace, defense, automotive, and industrial exposure. Particularly comparable on AEC-Q200 automotive MLCCs and high-reliability screened components.
• Knowles Precision Devices: Manufacturer of specialty ceramic capacitors including high-reliability and high-temperature MLCCs for aerospace, defense, medical, and industrial markets. Closely comparable niche peer competing in the same high-reliability vertical segments as Johanson.
• Exxelia: European-headquartered manufacturer of high-reliability passive components including MLCCs, film capacitors, and magnetics for aerospace, defense, medical, and industrial markets. Closely comparable specialty peer with similar niche positioning and qualification profile.

Broad incumbents

• Murata Manufacturing: Largest global MLCC manufacturer by volume and revenue, with extensive high-reliability and automotive-grade product lines. Directly comparable as a ceramic capacitor supplier across all of Johanson's primary segments, but at vastly greater scale and broader product breadth.
• Samsung Electro-Mechanics: Top-three global MLCC producer with strong presence in automotive and high-end consumer electronics. Comparable as an MLCC supplier, with particular overlap on AEC-Q200 automotive MLCCs and high-capacitance switch-mode devices.
• TDK Corporation: Major MLCC manufacturer with deep exposure to automotive, industrial, and consumer markets through its TDK and EPCOS brands. Comparable across Johanson's product lines including high-reliability, automotive, and industrial-grade capacitors.
• Yageo Corporation (KEMET): Global passive component leader following its acquisition of KEMET, with major positions in MLCCs, tantalum capacitors, and specialty capacitors for automotive, industrial, and high-reliability end markets. Comparable on MLCC product category and end-market exposure.

Emerging players

• API Technologies (now Spectrum Control / subsidiary of HEICO): Supplier of EMI filtering, planar capacitors, filtered connectors, and power management components serving aerospace, defense, and medical markets. Particularly comparable on planar array EMI filters and discoidal capacitors that overlap with Johanson's X2Y and planar array product lines.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/johansondiel

Compliance10 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Johanson Dielectrics