Curable silicone gel composition

A curable silicone gel composition comprising:

• (A) 100 parts by mass of an organopolysiloxane represented by an average composition formula (1) shown below:
• RaR1bSiO(4-a-b)/2 (1)
• wherein R represents an alkenyl group, R1 represents a substituted or unsubstituted monovalent hydrocarbon group that contains no aliphatic unsaturated bonds, a represents a number within a range from 0.0001 to 0.2 and b represents a number within a range from 1.7 to 2.2, provided that a+b is a number within a range from 1.9 to 2.4,
• containing at least two alkenyl groups bonded to silicon atoms within each molecule,
• (B) an organohydrogenpolysiloxane represented by an average composition formula (2) shown below:
• (HR22SiO1/2)c(R33SiO1/2)d(R42SiO)e(R5SiO3/2)f (2)
• wherein R2 to R5 each independently represent identical or different substituted or unsubstituted monovalent hydrocarbon groups that contain no aliphatic unsaturated bonds, c and d each independently represents a number within a range from 0.00001 to 0.3, e represents a number within a range from 0.5 to 0.98, and f represents a number within a range from 0.01 to 0.12, provided that c+d+e+f=1,
• containing at least three hydrogen atoms bonded to silicon atoms within each molecule, and containing at least one (R5SiO3/2) unit within each molecule,
• in an amount that provides 0.1 to 5 hydrogen atoms bonded to silicon atoms per one alkenyl group bonded to a silicon atom within component (A), and
• (C) an effective amount of a platinum-based catalyst, wherein
• following curing, a penetration value as prescribed in JIS K-6249 is within a range from 10 to 200, and loss coefficient values at 25° C. for shear frequency values of 1 Hz and 10 Hz are within a range from 0.1 to 1.0 and within a range from 0.3 to 1.5 respectively.