https://jbcapacitors.blogspot.com/2026/09/how-to-choose-right-capacitor-film.html
Discover jb JFG Series film capacitors (JFGA/B/C/D) up to 1250VDC. Compare cycloidal and flat oval designs for ideal PCB fit, thermal reliability, and peak performance.
In high voltage designs, structure matters. The way a film capacitor is built — whether in a cycloidal body or a flat oval form — directly affects not only how it fits your board layout, but also how it handles thermal expansion, electrical stress, and long-term reliability.
The jb JFG Series offers both options: JFGA / JFGC (Cycloidal) and JFGB / JFGD (Flat Oval). These designs are paired with polyester (PET) or polypropylene (PP) dielectric films, and come in ratings up to 1250VDC — making them ideal for energy-dense, mission-critical circuits.
So, which structure is right for your project?
If your layout needs a component with more height tolerance and compact footprint, the cycloidal version may be your best fit. On the other hand, if you’re working with space-limited vertical profiles or dense modules, the flat oval design will provide easier stacking and tighter spacing.
Both options offer excellent self-healing properties, low dissipation factor, and consistent dielectric performance across temperature and frequency ranges.
Compare Full Specs, Models & Drawings Online
Instead of guessing which model suits your voltage level or layout restrictions, we’ve made it easy for you to compare all JFG series models — including detailed dimensions, capacitance range, and lead types.
🔍 Compare all JFG models → Contact us for details
📐 Need to check fit and footprint? Full mechanical drawings and datasheets are available — request via our Contact Page.
📧 Questions? Contact our team here.
