The MP ultra-precision surface-mount resistor series from Alpha Electronics offers a wide resistance range from 30Ω up to 30kΩ with tight tolerances down to +0.05% (100Ω to 30kΩ), 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 MP 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. 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
Moulded package with J-lead terminations
Resistance values from 30Ω to 30kΩ
Tolerance of ±0.05% or ±0.1% (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 50V
Maximum working current of 0.35A
Power rating of 0.1W (at +125°C)
Typical applications for the MP ultra-precision surface-mount resistor series include:
Sceintific instrumentation
Test & Measurement equipment
Alpha Electronics MP Series Specification Table
Attributes
Value
Resistance value
30Ω to 30kΩ
Tolerance
±0.05% / ±0.1%
TCR
±5ppm/°C or ±10ppm/°C (-55 to +125°C)
Temperature range
-65°C to +175°C
Power rating (at +70°C)
0.1W
Maximum voltage
50V
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 its 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.
The MP 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 MP resistor series:
Alpha Electronics MP Series – Standard Stocked Parts
Resistance Value
Part Number Value
0.05% Tolerance
0.1% Tolerance
30Ω
30R000
50Ω
50R000
100Ω
100R00
120Ω
120R00
180Ω
180R00
200Ω
200R00
300Ω
300R00
350Ω
350R00
500Ω
500R00
900Ω
900R00
1kΩ
1K0000
1.8KΩ
1K8000
2kΩ
2K0000
2.2KΩ
2K2000
3kΩ
3K0000
5kΩ
5K0000
5.6KΩ
5K6000
6.8KΩ
6K8000
9kΩ
9K0000
10kΩ
10K0000
15KΩ
15K000
18KΩ
18K000
20kΩ
20K000
25KΩ
25K000
30KΩ
30K000
Alpha Resistor Videos
We are pleased to provide you with a range of videos, please see below for the latest content available:
VIDEOS
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.
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.
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
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.
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.
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 MP Series Resources
Product Datasheet
Alpha MP & MQ Series Datasheet
Alpha Electronics MP and MQ moulded J-lead surface-mount ultra-precision resistor series datasheet
Supporting Product Information
Alpha Manufacturing and Product Information
Alpha Electronics manufacturing process, adjustment of resistance value construction, and temperature characteristics of resistance information
Please be advised that due to the ongoing supply issues with raw materials affecting the global electronics industry, as well as an increase in orders received by our manufacturing partners, a large number of products are facing increased lead times in recent months. For the latest lead time and stock availability, please contact one of our engineers who will be happy to discuss lead times further and the potential for alternative parts.
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