JR Series High Power Jumper Chip The Ohmite JR series high current jumpers are rated up to 100 amps and provides a max resistance range of 0.5m to 0.2m ohms. This minimizes effects on the designed circuit. Five industry sizes are available. The JR series also provides great insulation resistance over 100M ohms. s e r i e s sp e c i f i c a t i o n s Max. Max. Series Res. (mΩ) Current (A) JR0402X20E 0.5 20 JR0603X26E 0.2 26 JR0805X35E 0.2 35 JR1206X40E 0.2 40 JR2512X100E ≤0.2 .