TT Electronics has expanded its high-reliability CR and HR series with two resistor types in the 0603 size. These thick-film chip resistors target compact circuits in aerospace, military, communications, medical, and industrial applications.
Both resistor series’ thick-film elements claim a higher surge tolerance than thin-film, which also improves reliability, said TT Electronics. The CR0603 resistors are available in values from 1R0 to 10M with tolerance values down to 0.1%. CECC 40401-008 screened parts are optionally available. Applications include sub-sea repeaters, mainframe systems, and hi-rel systems.
The resistors’ optional screened release (CECC) enhances reliability, reduces field failures, and provides low demonstrated FIT rates compared to competing commodity products, according to the company. Seven sizes are available from 0503 up to 2512. The CECC-approved resistors are also available as shorting links.
The HR0603 resistors are available in values from 10M to 20G with tolerance values down to 5%. Specific applications include high gain amplifiers, infra-red and glass break sensors, and smoke, gas, and medical monitors. The HR series’ high-ohmic-value resistors offer enhanced reliability and reduced field failures compared to series-connected, multi-chip solutions and deliver a low voltage coefficient of resistance. Custom designs and sizes are available.
The solder terminations for both series have a nickel barrier layer that ensures excellent “leach” resistance properties and solderability, and they will withstand immersion in solder at 260°C for 30 seconds. Both series also include gold wire bond or solder terminations. An ambient temperature range of –55°C to 155°C is specified for both ranges. All relevant marking information is recorded on the primary package or reel.
Datasheets can be found at https://bit.ly/2KE3gOd and https://bit.ly/2KKBXBQ .
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