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Resistors Product List

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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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Ultra-precision metal foil resistor *Achieves a resistance temperature characteristic of ±0.05 ppm/℃!

Ultra-precision metal foil resistor *Achieves a resistance temperature characteristic of ±0.05 ppm/℃!

Achieves an excellent long-term stability of 5 ppm/year! Adopted in various applications where high precision, stability, and reliability are required, such as high-precision industrial equipment.

Alpha Electronics' "Metal Foil Precision Resistors" are ultra-precision resistors that use a special alloy foil with a thickness of several micrometers for the resistance element, unlike conventional precision-grade metal film resistors or wire-wound resistors. Regarding the important performance of long-term stability, unlike metal film resistors which use thin films, the use of several micrometers of metal foil allows for the extraction of the stable properties inherent to metals, resulting in products with very small aging changes. The minimum temperature coefficient of resistance is 0.05 ppm/°C (typical value), and the minimum resistance value tolerance is ±0.0025%, with an aging change of approximately 5 ppm/year* making it an excellent product in terms of long-term stability. (*For hermetic types) They are used in high-precision electronic devices, electronic measuring instruments, and precision detection circuit designs for high-precision amplification circuits and reference power supplies in medical devices. 【Product Lineup Features】 ■ Temperature coefficient of resistance: ±0.05 ppm/°C (typical value from 0°C to +60°C) ■ Resistance value tolerance: ±0.0025% ■ Aging change: 25 ppm/year, 50 ppm/3 years 　　　　(Hermetic type 5 ppm/year, 10 ppm/3 years) ★ We will be exhibiting at Techno Frontier 2019: Power Supply System Exhibition ★ Booth: No.6B-35

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Z-foil ultra-precision chip resistor (face bond type)

Z-foil ultra-precision chip resistor (face bond type)

The conventional MP/MQ series adopts the new generation Z foil, achieving low TCR and high stability.

New Generation Z Foil Technology enables: ● Temperature Coefficient of Resistance (TCR): 0.05 ppm/°C typical value (0°C to +60°C) ● 0.2 ppm/°C typical value (−55°C to +125°C, referenced at +25°C) ● Resistance value tolerance: ±0.01% ● Power coefficient (due to self-heating R): 5 ppm/rated power typical value ● Usable at twice the rated power at ambient temperatures below 70°C ● Load life stability (70°C, 2000 hours, rated power: ±0.005%) typical value ● Custom resistance values (up to 5 digits) can be manufactured (no additional cost & no additional lead time)

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Ultra-precision chip resistors "MP/MQ Series"

Ultra-precision chip resistors "MP/MQ Series"

Introducing face-bonded ultra-precision chip resistors - metal foil resistors for surface mounting.

Alpha Electronics is a brand of Vishay Precision Group (NYSE: VPG) that manufactures the most precise and stable resistors in the Vishay Foil Resistors product line. The stability of metal foil resistors, which possess the property of being "unchanging" with respect to temperature and time, is also applied as standard resistors. The 'MP/MQ Series' consists of ultra-precision chip resistors with face-bonded construction. 【Specifications】 ■ Rated Power: 0.1W, 0.125W ■ Resistance Range: 30Ω to 60kΩ ■ Resistance Tolerance: ±0.05%, ±0.1% ■ TCR: 0±5ppm/℃ *For more details, please refer to the PDF document or feel free to contact us.

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Precision Resistors "FLA/FLB/FLC Series"

Precision Resistors "FLA/FLB/FLC Series"

Introducing precision resistors - through-hole metal foil resistors.

Alpha Electronics is a brand of Vishay Precision Group (NYSE: VPG) that manufactures the most precise and stable resistors in the Vishay Foil Resistors product line. The stability of metal foil resistors, which possess the property of being "unchanging" with respect to temperature and time, is also applied as standard resistors. The 'FLA/FLB/FLC series' consists of precision resistors with a resin coating. 【Specifications】 ■ Rated Power: 0.125W to 0.25W ■ Resistance Value Range: 10Ω to 200kΩ ■ Resistance Value Tolerance: ±0.01% to ±0.1% ■ TCR: 0±2.5ppm/℃, 0±5ppm/℃ *For more details, please refer to the PDF document or feel free to contact us.

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Ultra-precision power resistors "PB/PC Series"

Ultra-precision power resistors "PB/PC Series"

Introducing ultra-precision power resistors - metal foil resistors with through-hole design.

Alpha Electronics is a brand of Vishay Precision Group (NYSE: VPG) that manufactures the most precise and highly stable resistors in the Vishay Foil Resistors product line. The stability of metal foil resistors, which have the property of being "unchanging" with respect to temperature and time, is also applied as standard resistors. The 'PB/PC Series' is an ultra-precision power resistor. 【Specifications】 ■ Rated Power: 2W (10W when using a heat sink) ■ Resistance Value Range: 0.002Ω to 50kΩ ■ Resistance Value Tolerance: ±0.01% to ±5.0% ■ TCR: 0±2.5ppm/℃, 0±5ppm/℃, 0±15ppm/℃ *For more details, please refer to the PDF document or feel free to contact us.

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Precision Power Small Resistors "PD Series"

Precision Power Small Resistors "PD Series"

"Metal Foil Resistors - Through Hole" Introducing precision power small resistors.

Alpha Electronics is a brand of Vishay Precision Group (NYSE: VPG) that manufactures the most precise and stable resistors in the Vishay Foil Resistor product line. The stability of metal foil resistors, which have the property of being "unchanging" with respect to temperature and time, is also applied as standard resistors. The 'PD Series' is a compact resistor for precision power applications. 【Specifications】 ■ Rated power: 1.5W (when using an 8W heat sink) ■ Resistance range: 0.1Ω to 10kΩ ■ Resistance tolerance: ±0.02% to ±5% ■ TCR: 0±2.5ppm/℃, 0±5ppm/℃, 0±15ppm/℃ *For more details, please refer to the PDF document or feel free to contact us.

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Ultra-precision resistors "HC/HD/HG Series"

Ultra-precision resistors "HC/HD/HG Series"

Introducing ultra-precision metal foil resistors - through-hole.

Alpha Electronics is a brand of Vishay Precision Group (NYSE: VPG) that manufactures the most precise and highly stable resistors in the Vishay Foil Resistor product line. The stability of metal foil resistors, which have the property of being "unchanging" with respect to temperature and time, is also applied as standard resistors. The "HC/HD/HG Series" consists of hermetically sealed ultra-precision resistors. 【Specifications】 ■ Rated Power: 0.3W ■ Resistance Value Range: 1Ω to 120kΩ ■ Resistance Value Tolerance: ±0.005% to ±1.0% ■ TCR: 0±1ppm/℃, 0±2.5ppm/℃, 0±5ppm/℃, 0±15ppm/℃ *For more details, please refer to the PDF document or feel free to contact us.

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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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Precision Network Resistors (Resin Coated Type) SE, SF, SS

Precision Network Resistors (Resin Coated Type) SE, SF, SS

Excellent performance leveraging the characteristics of foil resistors! Resin-coated network resistors!

The "SE, SF, SS series" are precision network resistors with a resin coating. Alpha Electronics, with extensive experience in precision resistors, offers network resistors that leverage the characteristics of foil resistors, providing excellent performance in TCR tracking, resistance value matching, and stability. 【Features】 ■ Resistance temperature characteristic: 0±5ppm/℃ ■ TCR tracking: ±1ppm/℃ ■ Resistance value matching: ±0.01% ■ Stability: ±0.005%/year ■ RoHS compliant *For more details, please refer to the PDF document or feel free to contact us.

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Z-Foil Ultra-Precision Chip Resistors 'MPP/MQP Series'

Z-Foil Ultra-Precision Chip Resistors 'MPP/MQP Series'

Introducing Z-Foil ultra-precision chip resistors - Metal foil resistors - Surface mount.

Alpha Electronics is a brand of Vishay Precision Group (NYSE: VPG) that manufactures the most precise and stable resistors in the Vishay Foil Resistors product line. The stability of metal foil resistors, which have the property of being "unchanging" with respect to temperature and time, is also applied as standard resistors. The 'MPP/MQP Series' consists of face-bonded Z-Foil ultra-precision chip resistors. 【Specifications】 ■ Rated Power: 0.2W, 0.25W @70℃ / 0.1W, 0.125W @125℃ ■ Resistance Value Range: 30Ω to 40kΩ ■ Resistance Value Tolerance: 0.01%, ±0.02%, ±0.05%, ±0.1% ■ TCR: ±0.2ppm±1.8ppm/℃ *For more details, please refer to the PDF document or feel free to contact us.

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