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New Stress-Free Ultra-Stable Primary Standard Resistor "USR-SF Series"

New Stress-Free Ultra-Stable Primary Standard Resistor "USR-SF Series"

Standard Resistors: Achieving outstanding low temperature characteristics and long-term stability!

The "USR-SF Series" is an ultra-high stability standard resistor that employs stress-free bulk metal foil technology. It achieves low temperature characteristics of ±0.05ppm/℃ at 23℃ ±5℃ and long-term stability, allowing for use in air without the need for expensive and maintenance-intensive oil baths. Additionally, the resistive element is held within a specially designed case, making it suitable for transport even under vibration. 【Features】 ■ New generation stress-free bulk metal foil technology adopted ■ Excellent long-term stability due to the adoption of stress-free bulk metal foil technology ■ Outstanding temperature characteristics of ≦±0.05 ppm/℃ at 23℃ ±5℃ ■ Excellent humidity/air pressure characteristics due to ceramic sealed packaging *For more details, please refer to the PDF document or feel free to contact us.

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Ultra-Stable Standard Resistor [HRU Series] (Patent Granted)

Ultra-Stable Standard Resistor [HRU Series] (Patent Granted)

New Generation Stress-Free BulkMetal® Ultra-Stable Resistor Element Utilizing Bulk Metal Foil Technology and Proprietary Nickel-Chromium Alloy

Alpha Electronics has been providing stable performance for many years. The HRU series features ultra-stable resistive elements that utilize next-generation stress-free Bulk Metal® foil technology and a unique nickel-chromium alloy. The resistive elements are encapsulated in a specially designed ceramic case to protect against humidity and oxidation. These features achieve exceptional stability of 0.2ppm/year (actual value: 0.05ppm/year) and extremely low temperature characteristics of α23̟±0.05ppm/℃ and β±0.005ppm/℃². 【Features】 ■ Outstanding long-term stability: Achieves ≦0.2ppm/year (actual value: ≦0.05ppm/year) ■ Outstanding temperature characteristics: Achieves ≦α23±0.05ppm/℃ and β±0.005ppm/℃² ■ Outstanding humidity characteristics: Achieves ≦0.1ppm/%RH ■ Outstanding atmospheric pressure characteristics: Achieves ≦0.001ppm/hPα ■ Resistance value range: 10Ω, 100Ω (1Ω and 1kΩ are scheduled for release in 2019) ■ Can be used in air without the need for expensive and maintenance-intensive oil baths, approximately 240g (0.52lbs)

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Standard resistor "ASR series"

Standard resistor "ASR series"

[Standard Resistor] Outstanding low temperature characteristics! Usable in a wide range of fields such as precision measurements in work environments.

The "ASR Series" is a highly stable standard resistor that employs our unique high-stability, low-resistance temperature coefficient Ni-Cr alloy foil as the resistance element. The excellent resistance temperature coefficient of the metal foil allows for use in air without the need for expensive and complicated temperature control equipment such as oil baths, making it suitable for precise measurements and calibrations in various fields. The housing consists of a compact and robust body and cover, designed to protect the terminals from damage and facilitate storage. 【Features】 ■ Long-term stability is high, at 3ppm/year or less after the first year. ■ The resistance temperature coefficient is low, at 0.2ppm/°C or less between 0°C and 50°C. ■ A comprehensive lineup of resistance values ranging from 1Ω to 10MΩ. ■ Non-wound structure provides excellent AC characteristics. ■ Compact and robust design that considers operability and storage. *For more details, please refer to the PDF document or feel free to contact us.

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Standard Resistance for Work Use "CSR Series"

Standard Resistance for Work Use "CSR Series"

Standard resistors that are easy to handle in air! Custom specifications are also available!

The "CSR Series" is a high-performance standard resistor that has received high praise for its excellent stability and low temperature coefficient, similar to the ASR Series standard resistors, which also use metal foil as the resistive element. It is an easy-to-handle air-type resistor, designed with user-friendliness in mind, making it suitable as an in-house standard as well as a field standard. Custom specifications for resistance values can also be produced upon request. Please feel free to contact us. 【Features】 ■ Achieves high precision and high stability in an air-type due to the use of metal foil resistors ■ Covers a wide range from 1mΩ to 1MΩ ■ Excellent price-performance ratio ■ Easy to use with a horizontal terminal arrangement ■ Customizable options * For more details, please refer to the PDF materials or feel free to contact us.

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Standard Resistance for Electric Power "LSR Series"

Standard Resistance for Electric Power "LSR Series"

Standard resistors that meet the demand for high current/low resistance values! Resistors with excellent long-term stability.

The "LSR Series" is a standard resistor developed to meet the demands for high current and low resistance values. The resistive element uses carefully selected metal foil, achieving a low temperature coefficient and excellent long-term stability. Additionally, to suppress internal temperature rise, the structure allows for high power measurements using an aluminum perforated plate in the housing. Since it is an air-type that does not require auxiliary equipment such as oil baths or cooling devices, it can be used in a wide range of applications including high-precision measurements, in-house calibration, and reference for precision power supplies. 【Features】 ■ Capable of high power measurement ■ Excellent long-term stability ■ Extremely low temperature coefficient despite low resistance in an air-type ■ Structure that suppresses self-heating due to load ■ Calibration certificate and test report traceable to NMIJ included *For more details, please refer to the PDF document or feel free to contact us.

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Standard Resistors for Milliohm Meters "MSR Series"

Standard Resistors for Milliohm Meters "MSR Series"

Ideal for daily inspections of milliohm meters! Demonstrates excellent performance at a low cost!

The "MSR Series" is a simple standard resistor suitable for daily inspections of milliohm meters, featuring an internal structure that considers AC characteristics and terminals designed with thermoelectric power in mind. Despite its affordable price, it achieves excellent stability and a low temperature coefficient, and its user-friendly shape makes it effective as a standard instrument for field use. We can also manufacture resistance values not listed in the catalog upon request. 【Features】 ■ Compact and lightweight design suitable for portability ■ Excellent price-performance ratio ■ Element structure that minimizes AC/DC differences ■ Calibration certificate and test report traced to NMIJ included (DC only) (*NMIJ: National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology) ■ Custom specifications available *For more details, please refer to the PDF document or feel free to contact us.

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