Johanson Dielectrics
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Johanson Dielectrics, Inc. are a manufacturer of high quality ceramic chip capacitors. With extensive product lines including Standard and High Voltage SMT Ceramic Capacitors, and High Voltage and High Capacitance value Ceramic Capacitors, Johanson Dielectrics is also a major supplier of SMPS devices used in power conditioning and filtering.
Switch-Mode ceramic capacitors feature large capacitance values and exhibit low ESR (equivalent series resistance) and low ESL (equivalent series inductance) making them well suited for high power and high frequency applications where tantalum or aluminum electrolytic capacitors may not be suitable. Johanson Dielectrics offers two series of these devices. The P-Series feature mechanical and pin-out configurations per DSCC 87106 and 88011 drawings while the E-Series feature mechanical and pin-out configurations more common in European design applications.
Johanson Dielectrics's Mini-Switch Mode® ceramic capacitors combine the advantages of high capacitance found in tantalum capacitors with very low ESR performance of ceramic capacitors. The "J" and "L" lead configurations replace 1825 and 2225 SMT chips to provide stress relief and prevent cracking due to thermal cycling or mechanical board flexing. Another plus of the J-lead style is that this configuration allows use of the same solder lands as the SMT chips. See the Switch-Mode section for larger values. See also the Technical Notes on soldering and handling and suggested solder lands.
