SMM SERIES
Engineering Bulletin Mar 07
SMM Series
Ⅲ Snap Mount
Ⅲ Downsize
Ⅲ High Voltage
Ⅲ Long Life
Ⅲ RoHS
Compliant
Ⅲ 85؇C
Maximum
Temperature
The SMM series is a high voltage, long life snap-in capacitor series that offers downsized versions
of the SMH series. Compared to our SMH series, the SMM capacitors have a longer rated lifetime
of 3,000 hours with the full rated ripple current applied and are also one case size smaller than
equivalently rated SMH capacitors. These characteristics allow downsizing for many power supplies
and will provide better reliability due to increased life. The SMM capacitors are available in 2 or 4-pin
snap-in styles and 4-pin straight terminals. The SMM series capacitors are RoHS compliant offering
Pb-free construction.
The standard SMM series capacitors are not solvent proof. Refer to guidelines and precautions on the
website for usage and installation conditions recommended for United Chemi-Con products.
Summary of Specifications
Ⅲ PC board 2 or 4-pin snap-in; optional 4-pin straight terminals.
Ⅲ Capacitance range: 47 to 3,300µF.
Ⅲ Voltage range: 160 to 450VDC.
Ⅲ Category temperature range: 25؇C to 85؇C.
Ⅲ Leakage current: 3 CV (µA) maximum after 5 minutes at 20؇C.
Ⅲ Standard capacitance tolerance: ؓ20%
Ⅲ Nominal case size (DL): 2025mm to 3550mm.
Ⅲ Rated lifetime: 3,000 hours at 85؇C with the rated ripple current applied.
United Chemi-Con, Inc. 9801 W. Higgins Road, Rosemont, IL 60018 Tel 847-696-2000 Fax 847-696-9278 www.chemi-con.com 1/ 11