Verified Nov 2026
Electronics & Software
·
Warrenville, Illinois
·
Since 1925
Ohmite Manufacturing makes resistive products for high current, high voltage, and high energy applications, including power resistors, rheostats, potentiometers, heat sinks, and EMI filters. The privately held company was founded in 1925 and is headquartered in Warrenville, Illinois, with an estimated 200-500 employees. It serves the automotive, electric vehicle, electronics, appliance, medical, and military-defense industries. In March 2026, RFMW announced a distribution agreement with Ohmite for its high-power resistors and thermal management solutions.
Ohmite Manufacturing at a glance
Revenue
$10-50M
Est. band
Employees
200-500
Founded
1925
Headquarters
Warrenville, Illinois
Certifications
AS9100 · IATF 16949 · ISO 9001
Import activity
1504
Industries
Automotive
Electric Vehicles
Electronics
Appliance
Medical
Military & Defense
Sourcing and import activity
From US customs bill-of-lading records
US sea imports
1504
Named foreign suppliers
50
Top origins
China · India · Thailand · United Kingdom
Shared foreign counterparties do not establish that these companies buy from Ohmite Manufacturing.
What this tells a buyer
Ohmite's recent developments include a March 2026 distribution agreement with RFMW and a planned move of its Brownsville, Texas distribution center into a new facility in summer 2026, as reported by the company and outlets covering the agreement.
Ohmite holds AS9100, IATF 16949, and ISO 9001 certifications and offers assembly services and custom design support alongside its wire-wound, thick film, and ceramic composition resistors.
Ohmite is privately held, with an estimated revenue band of $10-50 million, and manufactures at facilities in Matamoros, Mexico, with a distribution center in Brownsville, Texas.
Source: US customs bill-of-lading records and public filings · Last verified Nov 05, 2026
STABILITY SIGNALS
Established & active
101 years in operation (founded 1925).
Holds AS9100, IATF 16949, ISO 9001 certification(s) per public sources.
Overview
Ohmite Manufacturing makes resistive products for high current, high voltage, and high energy applications, including power resistors, rheostats, potentiometers, heat sinks, and EMI filters. The privately held company was founded in 1925 and is headquartered in Warrenville, Illinois, with an estimated 200-500 employees. It serves the automotive, electric vehicle, electronics, appliance, medical, and military-defense industries. In March 2026, RFMW announced a distribution agreement with Ohmite for its high-power resistors and thermal management solutions.
At a glance
Attribute | Detail |
|---|---|
Founded | 1925 |
Headquarters | Warrenville, Illinois |
Employees | 200-500 |
Revenue | $10-50M (estimated) |
Primary capability | Electronics & Software |
Certifications | AS9100 · IATF 16949 · ISO 9001 |
What Ohmite Manufacturing makes
Ohmite holds AS9100, IATF 16949, and ISO 9001 certifications and offers assembly services and custom design support alongside its wire-wound, thick film, and ceramic composition resistors.
Products and capabilities described on the company's own site include Stamping, Assembly, Aluminum, Electronics (source: ohmite.com).
Certifications
Ohmite Manufacturing is associated with the following certifications in public sources. Confirm the certified scope for the specific plant producing your part:
AS9100 — ohmite.com
IATF 16949 — ohmite.com
ISO 9001 — ohmite.com
Trade and customs footprint
Ohmite's recent developments include a March 2026 distribution agreement with RFMW and a planned move of its Brownsville, Texas distribution center into a new facility in summer 2026, as reported by the company and outlets covering the agreement. US customs bill-of-lading records list 1504 inbound shipments across 50 foreign suppliers, with top origins including China · India · Thailand · United Kingdom.
Latest developments
2026-09-30 — We're a new Manager of Product Development in Brownsville, Texas. Apply today or share this post with your network. | Ohmite Manufacturing (linkedin.com)
2026-04-16 — Ohmite recently brought the team from our Brownsville distribution center out for a firsthand look at the new facility we’ll be moving into this summer. (linkedin.com)
2026-03-03 — RFMW and Ohmite Announce Distribution Agreement for High-Power Resistors and Thermal Management Solutions (businesswire.com)
2026-03-03 — RFMW and Ohmite Announce Distribution Agreement for High-Power Resistors and Thermal Management Solutions - RFMW Blog (rfmwblog.com)
2025-09-25 — チップワンストップ、米国大手抵抗器メーカOhmiteの正規代理店に | 株式会社チップワンストップのプレスリリース (prtimes.jp)
2025-04-16 — Orbweaver And Ohmite Automate Real-Time Data For Over 2.5 Million Part Numbers For Distribution Partners / Orbweaver (orbweaver.com)
Facilities
Ohmite Manufacturing is headquartered in Warrenville, Illinois. Public sources also reference these locations:
Warrenville, Illinois — ohmite.com
Matamoros, Mexico — ohmite.com
Brownsville, Texas — ohmite.com
Skokie, Illinois — ohmite.com
Company details
Ohmite is privately held, with an estimated revenue band of $10-50 million, and manufactures at facilities in Matamoros, Mexico, with a distribution center in Brownsville, Texas. Ohmite Manufacturing was founded in 1925, has an estimated 200-500 employees, and is headquartered in Warrenville, Illinois. On the LightSource stability read it is rated "Established & active": 101 years in operation (founded 1925). Holds AS9100, IATF 16949, ISO 9001 certification(s) per public sources.
Frequently asked questions
What does Ohmite Manufacturing make?
Ohmite Manufacturing makes resistive products for high current, high voltage, and high energy applications, including power resistors, rheostats, potentiometers, heat sinks, and EMI filters. The privately held company was founded in 1925 and is headquartered in Warrenville, Illinois, with an estimated 200-500 employees. It serves the automotive, electric vehicle, electronics, appliance, medical, and military-defense industries. In March 2026, RFMW announced a distribution agreement with Ohmite for its high-power resistors and thermal management solutions.
Where is Ohmite Manufacturing headquartered?
Ohmite Manufacturing is headquartered in Warrenville, Illinois (27501 Bella Vista Pkwy, Warrenville, Illinois, 60555).
When was Ohmite Manufacturing founded?
Ohmite Manufacturing was founded in 1925.
How big is Ohmite Manufacturing?
Ohmite Manufacturing has an estimated 200-500 employees, with revenue in the $10-50M range (estimated).
What certifications does Ohmite Manufacturing hold?
Ohmite Manufacturing lists AS9100 · IATF 16949 · ISO 9001 on its website. Confirm the certified scope for the specific plant producing your part.
Does Ohmite Manufacturing import from overseas suppliers?
US customs bill-of-lading records show 1504 inbound shipments for Ohmite Manufacturing, with top origins including China · India · Thailand · United Kingdom.
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Last verified Nov 2026. Is this your company? Request a correction.
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