Alpha MQ Series

  • Compliant
  • Alpha Electronics

Product Features

  • Ultra-precision surface-mount resistor
  • Available in any resistance between 30Ω and 60kΩ
  • Tolerance as low as ±0.05%
  • TCR of ±5 ppm/°C or ±10 ppm/°C
  • Power rating of 0.125W (at +125°C)
  • Temperature range from -65°C up to +175°C

Applications

  • Test and Measurement

Description

The MQ ultra-precision surface-mount resistor series from Alpha Electronics offers a wide resistance range from 30Ω up to 60kΩ with tight tolerances down to ±0.05% (100Ω to 60kΩ), all in a small surface-mount package. By utilising Alpha’s Bulk Metal® foil resistor technology, they are able to produce resistors with low-temperature coefficients and excellent long-term stability. The Alpha MQ series J-lead terminals provide flexibility compared to standard fixed surface-mount resistors as the resistive element internally is mechanically isolated from the leads via gold wire-bonding.
These resistors are constructed using an outer coating of epoxy resin, which provides excellent resistance to moisture, heat and solvents. Internally, the resistive element is mechanically isolated from the lead frames using gold wire bonding. The series exhibits excellent high-frequency characteristics thanks to their Bulk Metal® foil resistor technology, making them suitable for the most demanding precision applications.

  • Surface-mount ultra-precision resistor
  • Surface-mount moulded package with J-lead terminations
  • Available in any resistance between 30Ω and 60kΩ
  • The resistive element is mechanically isolated from the contact terminals
  • Tolerance as low as ±0.05% (dependant on resistance values)
  • TCR of ±5 ppm/°C or ±10 ppm/°C (dependant on resistance values)
  • Temperature range from -65°C up to +175°C
  • Maximum working voltage of 100V
  • Maximum working current of 0.35A
  • Power rating of 0.125W (at +125°C)

 

Typical applications for the MQ ultra-precision resistor series include:

  • Sceintific instrumentation
  • Test & Measurement equipment

 

Alpha Electronics MQ Series Specification Table

AttributesValue
Resistance value30Ω to 60kΩ
Tolerance±0.05% or ±0.1%
TCR±5ppm/°C or ±10ppm/°C (-55 to +125°C)
Temperature range-65°C to +175°C
Power rating (at 125°C)0.125W
Maximum voltage100V

 

Alpha Electronics are manufacturers of some of the most stable and precise resistors on the market. As part of the VPG Foil Resistors product group, the Alpha Electronics brand is globally rewarded for the accuracy and reliability of their Bulk Metal® Foil technology resistors. Alpha Electronics has been living the conviction globally known to engineers for consistently delivering the highly desirable characteristics of “Stability, Accuracy and Reliability”. Please visit https://www.alpha-elec.co.jp for more information.

Specifications

Weight 0.00000 kg
Dimensions 4.50 × 3.20 × 2.00 mm
Product Type

Resistance Value

,

Minimum Resistance

Series / Model

Maximum Resistance

Tolerance

,

Power Rating

Additional Features

Ultra-precision resistorUtilises Alpha's Bulk Metal® foil technologyMoulded package and J-lead terminalsMaximum working voltage of 100VMaximum working current of 0.35AWorking temperature range of -6

Temperature Coefficient

,

Voltage Rating

Current Rating

Temperature Range (°C)

Package / Size

Alpha MQ Series Resources

Product Datasheet

Supporting Product Information

Supporting Manufacturer Information

Alpha MQ Series Ordering Info

The MQ resistor series is available with various options including standard resistance values and tolerances. The information below gives an example of the part numbering system used for these resistors and the standard options available.

Below is an example of the part number break down for the MQ resistor series:

alpha_mq_order_code.png

Alpha Resistor Videos

We are pleased to provide you with a range of videos, please see below for the latest content available:

 

 

VIDEOS
Place holder video for YouTube video Resistor Stability Put to the Test (Demo Video)

In this video, our host Richard Zuratt puts the stability of the three major resistor technologies — foil, thin, and thick film — to the test. Each resistor type is subjected to an overload pulse and its change in resistance value is recorded. Due to the homogeneous nature of the VPG Bulk Metal® Foil resistor, it is the only of the three to experience no change from the high power pulse. This demonstrated performance makes foil resistors the technology of choice for critical applications where long-term stability and survivability are paramount.

Place holder video for YouTube video Advantages of Using Bulk Metal® Foil Resistors in High-Humidity Environments

All resistors that are based on nichrome, which is a category that includes both thin film devices and Bulk Metal Foil resistors, are susceptible to electro-chemical corrosion or etching when placed in a high humidity environment and powered with a very low wattage. But since the nichrome element of a Bulk Metal Foil resistor is hundreds of times thicker than the element in a thin film device with the same value, it will last much longer under these conditions. This video shows the actual etching process and survival times for thin film and foil nichrome resistive elements as they are tested in 100% humidity conditions.

Place holder video for YouTube video Comparison Testing of Chip Resistor Technologies Under High Vibration

Surface-mount resistors suffer physical stresses when exposed to high vibration or thermally unstable environments. Failure modes commonly occur in welds, solder joints, connectors, and terminations, ultimately resulting in circuit failure. In this demonstration, vibration-table-mounted boards are subjected to ±2° deflection 25 times per second and monitored for any ΔR > 0.1%. All the chip resistors failed in 2 to 12 minutes (8K to 16K cycles). But the Alpha MPP molded Bulk Metal® Z-Foil resistor with flexible terminations experienced over a million cycles with no change in resistance.

VIDEOS
Place holder video for YouTube video
Resistor Stability Put to the Test (Demo Video

In this video, our host Richard Zuratt puts the stability of the three major resistor technologies — foil, thin, and thick film — to the test. Each resistor type is subjected to an overload pulse and its change in resistance value is recorded. Due to the homogeneous nature of the VPG Bulk Metal® Foil resistor, it is the only of the three to experience no change from the high power pulse. This demonstrated performance makes foil resistors the technology of choice for critical applications where long-term stability and survivability are paramount.

Place holder video for YouTube video
Advantages of Using Bulk Metal® Foil Resistors in High-Humidity Environments

All resistors that are based on nichrome, which is a category that includes both thin film devices and Bulk Metal Foil resistors, are susceptible to electro-chemical corrosion or etching when placed in a high humidity environment and powered with a very low wattage. But since the nichrome element of a Bulk Metal Foil resistor is hundreds of times thicker than the element in a thin film device with the same value, it will last much longer under these conditions. This video shows the actual etching process and survival times for thin film and foil nichrome resistive elements as they are tested in 100% humidity conditions.

Place holder video for YouTube video

Surface-mount resistors suffer physical stresses when exposed to high vibration or thermally unstable environments. Failure modes commonly occur in welds, solder joints, connectors, and terminations, ultimately resulting in circuit failure. In this demonstration, vibration-table-mounted boards are subjected to ±2° deflection 25 times per second and monitored for any ΔR > 0.1%. All the chip resistors failed in 2 to 12 minutes (8K to 16K cycles). But the Alpha MPP molded Bulk Metal® Z-Foil resistor with flexible terminations experienced over a million cycles with no change in resistance.

Alpha MQ Series

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