Alpha KLC Series

Product Features

Thermosenstive through-hole resistor
Resistance range from 20Ω to 40kΩ
Tolerance from ±0.5% available
TCR are almost linear
Power rating of 0.25W (at +70°C)
Temperature range from -25°C up to +125°C

Applications

The KLC 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. The temperature characteristics for the KLC series can be freely adjusted, please see the datasheet under the Technical Library tab or the TCR against resistance values available graph below for further details.

Ultra-precision thermosenstive through-hole resistor
Available in a wide range of resistance values from 20Ω to 40kΩ
Tolerance options from ±5.0% down to ±0.5% available
Temperature characteristics can be freely adjusted and are almost linear
Maximum working voltage of 300V
Power rating of 0.25W (at +70°C)
Maximum rated operating temperature +70°C
Temperature range from -25°C up to +125°C

These Alpha KLC ultra-precision thermosensitive resistors are made of material only a few µm thick and responds 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 KLC series has a pin pitch of 7.62 ±0.25mm.

Typical applications for the KLC 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 graph represents possible TCR values against resistance values available for the KLC thermosensitive resistor series. Please see the datasheet under the Technical Library tab for the full specifications for the KLC series.

Possible TCR values against resistance values available graph

Graph showing possible TCR options against resistance values available in the KLC series.

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Calculators and Convertors

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Specifications

Weight	0.00000 kg
Dimensions	13.30 x 3.30 x 12.40mm
Maximum Resistance	40kΩ
Minimum Resistance	20Ω
Package / Size	Through-hole
Power Rating	0.25W
Product Type	Thermosensitive Through-Hole Resistor
Series / Model	KLC
Temperature Range (°C)	-25 to +125°C
Tolerance	±0.5%, ±1%, ±2%, ±5%
Voltage Rating	300V

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:

The following table highlights the resistance values and tolerances available:

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.

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 KLC Series Resources

Product Datasheet

Alpha CL, KLC, NL & NM Series Datasheet
Alpha Electronics CLA, CLB, KLC, NLA, NLB, NMP and NMQ ultra-precision thermosensitive 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
Alpha Custom Resistor Products Information
Alpha Electronics additional services and custom ultra-precision resistor information
Alpha Electrinics (VPG) PCN External Marking Change
Change of marking on Alpha Ultra Precision Resistor to laser marking from ink marking

Supporting Manufacturer Information

Alpha Standard Resistors Databook
Alpha Electronics complete standard resistor series information databook
Alpha Ultra-Precision Resistors Databook
Alpha Electronics complete ultra-precision resistor series information databook

Custom resistance value (Ω) *
Custom AT Range (AT) *
Custom Capacity (lbs) *
Custom Pressure (Bar/PSI) *
Custom Resistance Value Element 1 (Ω) *
Custom Resistance Value Element 2 (Ω) *
Custom lead length (mm) *
Custom lead length (inches) *

Custom resistance value (Ω) *
Custom AT Range (AT) *
Custom Capacity (lbs) *
Custom Pressure (Bar/PSI) *
Custom Resistance Value Element 1 (Ω) *
Custom Resistance Value Element 2 (Ω) *
Custom lead length (mm) *
Custom lead length (inches) *

Alpha KLC Series

Product Features

Applications

Calculators and Convertors

Specifications

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

Alpha Resistor Videos

Alpha KLC Series Resources

Product Datasheet

Supporting Product Information

Supporting Manufacturer Information

Related products

Alpha CLA Series

Alpha CLB Series

Alpha NLA Series

Alpha NLB Series

Alpha NMP Series

Alpha NMQ Series

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