- Innovator and Specialist in Thin Film Technology: Chip Resistors, Chip Networks, Precision Resistor Networks, Chip Inductors, Delay Lines, Power Choke Coils, Current Sensors.

Today’s ICs are small, function rich and high speed. Susumu-USA’s THIN FILM components are made to meet such demands. For example, our thin–film chip resistors boast their high frequency performance into GHz range without adding any significant noise, and our chip current sensors boast excellent heat dissipation (world’s smallest current sensors for the power), and many more… 

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Digi-Key’s library of more than 2000 exclusive PTM Online… On Demand® product training modules is a collection of training tools created with you – the busy design engineer – in mind. They are provided with the cooperation of participating supplier partners. From this one source, you can learn about the latest products and technologies, download datasheets, check inventory, contact our technical staff, and place an order for same-day shipment.

These modules are available in audio and non-audio formats and listed by supplier in easy-to-find alphabetical order. Simply locate the module that interests you and click on your format of choice. We hope you find these tools useful, and with new modules added continuously, we invite you to stop back often to see what’s new.

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Module NamePreviewAudioNon-AudioDurationParts List
  • Delay Lines
1.1MB318KB5 minParts List
  • HFT Series High Frequency Thermistors
1.9KB983KB10 minParts List
  • Introduction to Thin Film Chip Resistors
2.4MB601KB5 minParts List
  • KRL Series
3.6MB1.1MB10 minParts List
  • PXV Series Thermo-variable Attenuators
1.6MB570KB5 minParts List
  • RGLL Thin Film Chip Resistor
2.8MB770KB5 minParts List
  • RL Current Sense Resistors
2.2MB976KB5 minParts List
  • Severe Environmental & Sulfur Resistant Chip Resistors
2.6MB880KB10 minParts List
  • URG Thin Film Chip Resistor
3.1MB1.1MB10 minParts List

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Susumu Portable Kit Portable Kit
  • Lab bench
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  • Travel carry-on
  • RoHS compliant
  • Lead free
Click here to view Susumu kits available at Digi-Key.

Product Information

Susumu Kits
Susumu Thin Film Resistors - Data Book for RG, RM and RGH Series

Notification of Discontinuation
RGH Series
RP Series

Selection Chart

Thin Film Chip Resistors (Size X Power)
Low Resistance Current Sensors (Size X Power)

RoHS Information

Susumu Certification of RoHS Compliance

More about Susumu


Susumu HeadquartersIn 1964, in the midst of Japan's rapid economic and industrial growth, two young physicist/engineers had an innovative idea to create resistors using thin films deposited using vacuum technology. They started a new technology company called Susumu, meaning “moving forward” in Japanese, in Kyoto Japan. Coincidentally, it was the year of the Tokyo Olympic Games when Japan proved to the rest of the world how mature her technology had become. Since then, Susumu has been continuously introducing innovative electronics components backed by its core technology, thin film deposition. By the year 2000, Susumu's world market share in thin film resistors exceeded 50% and Susumu is maintaining this position to this day. Currently, Susumu is a global company still headquartered in Kyoto but with a worldwide sales network with direct subsidiaries and distributors.


Susumu has been an expert in a variety of thin film deposition techniques such as sputtering, vacuum evaporation, chemical vapor deposition, ion plating, and electro plating. Susumu has also accumulated other core technologies that are combined with thin film technology to produce innovative high technology electronics components. These technologies include fine pitch photolithography, micro-laser machining, and high density packaging. For a relatively small company, research and development have been Susumu's primary focus from its inception because Susumu realized that this was the key for developing new technologically advanced products. As a result, Susumu has been first introducing many innovative products. For example, the RG series of chip resistors are best thin film resistors available on the market the performance and reliability point of view. The RL series current sensing resistors boast the world's smallest size for the power rating. Susumu will continue embracing innovation into the future.
  1. Advanced original film deposition
    Plasma assisted chemical vapor deposition ion plating, sputtering and vacuum evaporation.
  2. Fine pattern photolithograph
    Both on flat surface and round surface.
  3. Micro laser machining technology
    Pattern generation, trimming, and scribing.
  4. High-density packaging technology
    Applied for micro-size chip components, BGA and leaded terminations via connected multi-stuck structure.

As a Japanese company, Susumu's company philosophy is built around total quality control. Taking advantage of Japanese traditional culture which forbids outside shoes worn inside the house, the factory is free of foreign material even outside of the clean rooms, a key to the production of thin film. No one is permitted to enter the factory wearing the shoes they wear outdoors. Since the ISO standard system was introduced in Japan, Susumu has been one of early adaptors for these international quality standards. Susumu's certification includes ISO9000, ISO14000, and TS 16949. From the beginning, quality has been essential part of life at Susumu.
Susumu Quality

Japan is a small country but full of natural beauty. Susumu has been committed to protecting Japan's environment and, of course, the earth. By nature thin film components use a minimal amount of material and last a long time allowing for the conservation of natural resources. Most of Susumu's products are not only RoHS compliant but also halogen free keeping the environment free of hazardous materials. As stated in Susumu's environmental policy which is compliant with ISO14000, Susumu operates its facilities by utilizing green technologies as much as possible by focusing on daily improvements to achieve zero emission.
Susumu Green Products

Zero Defect Award
Technical Information

What is Thin Film?


Quality and Environmental System Certification
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