A logarithmic resistor ladder consists of a resistor string and switches designed to attenuate a signal. The state of the switches can be considered to represent a digital code proportional to the logarithm of the attenuation ratio. Logarithmic attenuation is useful when a large dynamic range is needed. Audio volume control and fading/balancing audio signals […]
Resistors
Thick-film resistors feature high temperature stability
Commercial and industrial power electronics increasingly demand robust power supplies with high stability and low thermal resistance. For these requirements, standard chip resistors may not be the best solution. Wide terminal chip resistors, such as Stackpole’s RMCW, provide terminations on the long sides of the chip to provide better current handling and thermal resistance. The […]
Automotive grade chip resistors offer high reliability
Many types of electronic devices now benefit from the higher reliability of automotive-grade resistors. By specifying automotive-grade resistors, design engineers in any market segment can increase electrical stability and environmental reliability without the significant increase in cost normally associated with established reliability resistors. Stackpole’s RMCA series is AEC Q200 qualified and provides excellent long-term reliability. […]
Thick-film chip resistors feature full RoHS compliance
Surface-mount resistors have complied with the EU’s ROHS standards through exemption 7c-I. The exemption has been extended twice, but with an expiration date looming, many companies are seeking fully RoHS-compliant parts. To help companies transition to 100% RoHS compliant lead-free resistors, Stackpole offers its RMEF Series. Stackpole’s RMEF is a general-purpose resistor series offering resistance […]
JFETs, diodes, voltage-controlled resistors now in DFN packages
Linear Integrated Systems, Inc. announced it has expanded its product line to include the availability of key, high-performance discrete small-signal parts in Dual-Flat No-Leads packages (DFN). This package has a reduced circuit board footprint, enabling designers who had previously used SOT-23 packaged parts to meet the demands of space-sensitive applications. Because the DFN has no […]
Chip resistors are AEC qualified
Electronics that require high reliability are no longer confined to military, aerospace, medical, or automotive market sectors. Many types of electronic end products now demand the higher reliability provided by automotive-grade resistors. Automotive-grade resistors offer increased reliability without the high cost of established reliability Mil-Standard products which allows engineers to increase the reliability of their […]
Small nichrome chip resistors handle 0.05 W
As design engineers continue to push the miniaturization of electronic devices while maintaining or increasing functionality, there is a corresponding need for smaller and more precise electronic components, such as chip resistors. If a precision application requires both small size and high-power handling, finding suitable precision resistors may be challenging. Stackpole recently increased the power […]
Negotiate through 1/f noise challenges towards sample sizes into the 100s of years
Measuring and determining 1/f voltage noise over a multiple-year sample requires an operational amplifier and effective 1/f knowledge. This article shows how to identify and determine the actual op amp 1/f voltage noise across a sample size of years and explains why the 1/f voltage noise is a non-issue at higher frequencies. After many years […]
Single-turn potentiometers, encoders excel at rugged industrial apps
TT Electronics announced the addition of three new product families and three series expansions to its variable resistor portfolio. Portfolio additions include one new encoder series and two new single turn potentiometer families, along with the broadening of three existing potentiometer families. These new products are ideal for rugged industrial applications such as welding equipment […]
Thick-film chip resistor arrays comply with AEC-Q200 standard
Bourns, Inc. announced several new AEC-Q200 compliant thick film chip resistor array model families. Bourns designed the new surface-mount model CATxxA-LF, CAYxxA-LF, and CAYxxA-AS series to help increase available board space and reduce costs. Offering long-life protection against many sulfurous environments, the Model CAYxxA-AS series is the first chip arrays from Bourns that meet both the AEC-Q200 […]
