
Proudly serving Aerospace, Defense, Telecom (5G) and Automotive Industries

Your source for
Microwave Absorbing
Dielectrics Since 1946

Proudly serving Aerospace, Defense, Telecom (5G) and Automotive Industries

Your source for
Microwave Absorbing
Dielectrics Since 1946

Proudly serving Aerospace, Defense, Telecom (5G) and Automotive Industries

Unparalleled customer support is what you can expect from our team.

Only the best
We produce our own raw material from which the dielectrics are made

Over the past 76 years
Our engineering and technical staff work closely with our customers to determine the most optimum design for their project requirements.
Why Thorndike?
- Full Service Supplier
- Proven RF Problem Solver
- Industry Innovator
- Custom Solutions to meet specific requirements
- Worldwide Customer Service & Support
- Commitment to Quality



Thorndike Corporation is a leading design and precision manufacturer of microwave absorbing dielectrics supplying the military, commercial and industrial fields .
2022 marks our 76th year of continuous service.
Thorndike Corporation founded by James O. Thorndike Sr. opened its doors in 1946 and began manufacturing intricate and often delicate microwave dielectrics. We have continually grown to better meet the needs of our customers. We offer quick turnaround times, high-quality end products, competitive pricing, and complete follow-through on all projects.
Our Products are manufactured in full compliance with REACH Regulation Requirement (EC) 1907/2006 and certified below the maximum allowable levels specified in the RoHs Directive and are compliant with RoHS (3) EU Directive 2015/863.
We have been assessed and approved by QAS lnternational to the following management systems, standards and guidelines: ISO9001:2015 for manufacturing microwave absorbers, dielectrics, high and low power, testing, design and engineering. Certificate # US3993

Customers
Our customers range from large world-wide commercial industries, military and government institutions, scientific companies, to private and small leading-edge entrepreneurs. To request a copy of our current Thorndike Corporation catalogue click here and complete the request form.

Machine Shop
The machining capabilities at Thorndike Corporation are extensive; many of which are housed on-site in our 25,500 sq. ft. facility. At Thorndike we mold, machine, die cut and grind raw

Engineering Staff
Our engineering and technical staff work closely with our customers to determine the most optimum design for their project requirements.
What Our Customers Say

Thorndike Corporation products contain no material listed on the Candidate List of Substances of Very High Concern for Authorization
Thorndike Corporation maintains full compliance with REACH Regulation Requirement (EC) 1907/2006. We warrant and guarantee that all our products are certified SVHC and are compliant with REACH (EC) 1907/2006.
Thorndike Corporation has been assessed and approved by QAS international to the following management systems, standards and guidelines:
ISO 9001 : 2015
The approved administration systems apply to the following: Manufacture microwave absorbers, dielectrics, high and lower power, testing design and engineering.
Certificate Number US3993