Alpha CLA Series

  • Alpha Electronics

Product Features

  • Thermosensitive through-hole resistor
  • Resistance range from 5Ω to 100Ω
  • Tolerance from ±0.5% available
  • TCR of linear +4250 ±1% ppm/°C
  • Power rating of 0.125W (at +70°C)
  • Temperature range from -65°C to +125°C

Applications

  • Compliant

Description

The CLA ultra-precision thermosensitive resistor series from Alpha Electronics offers a highly accurate device that has a resistivity which varies linearly with temperature change in a through-hole package. By utilising Alpha’s Bulk Metal® foil resistor technology, they are able to produce these resistors that are ideally designed for temperature detection, providing a small size and rapid response.

  • Ultra-precision thermosensitive through-hole resistor
  • Stocked in both 10Ω and 100Ω resistance values with a tolerance of ±0.5%
  • Available in any resistance between 5Ω and 100Ω
  • Tolerance options from ±5.0% down to ±0.5% available
  • Linear +4250 ±1% ppm/°C TCR characteristic (from 0 to +100°C)
  • Response time of 0.9 seconds
  • Maximum working voltage of 250V
  • Power rating of 0.125W (at +70°C)
  • Maximum rated operating temperature +70°C
  • Temperature range from -65°C to +125°C

 

These Alpha CLA ultra-precision thermosensitive resistors are made of material only a few µm thick and respond rapidly to temperature changes. Strict control of foil composition maintains uniform quality without fluctuation of temperature characteristics of resistance. They are produced by the same fine photo-etching technology used in other metal foil precision resistors from Alpha.

The CLA series has a pin pitch of 2.54 ±0.25mm.

Typical applications for the CLA ultra-precision thermosensitive resistor series include:

  • Cold junction reference for thermocouples
  • Temperature compensation in load cells
  • Temperature compensation device in semiconductor circuits
  • Temperature sensing devices

 

The below table gives the full specifications for each resistor model available including the Alpha CLA series:

Alpha CLA Specifications
* Symbols parenthesized are for part number composition

 

Specifications

Weight 0.00000 kg
Dimensions 5.60 × 2.20 × 6.20 mm
Product Type

Resistance Value

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Minimum Resistance

Series / Model

Maximum Resistance

Tolerance

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Power Rating

Temperature Coefficient

Response Time

Voltage Rating

Temperature Range (°C)

Alpha CLA Series Resources

Product Datasheet

Supporting Product Information

Supporting Manufacturer Information

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 CLA, CLB, KLC, NLA, NLB, NMP and NMQ Ordering Info

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:

Part Number Example

 

 

The following table highlights the resistance values and tolerances available:

A-H1 Series Available Parts

Alpha CLA Series

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