TOKYO, Nov 10 (Reuters) - Japan's Nikkei share average dropped on Friday, tracking overnight Wall Street losses following a hawkish tilt by U.S. Federal Reserve Chair Jerome Powell, while heavyweight stocks SoftBank Group and Sony slumped after disappointing earnings.

The Nikkei dropped 1% to 32,319.51 as of 0200 GMT, with 160 of its 225 components declining, 63 rising and two trading flat.

The broader Topix slid 0.73%

Overnight, the Fed chief said policymakers "are not confident" that policy is yet restrictive enough to tame inflation, helping to send 10-year U.S. Treasury yields soaring as much as 13 basis points to 4.654%.

That led the dollar to surge as high as 151.39 yen , but without buoying the overall Japanese market.

"There really nothing of the 'weaker yen means buy exporters on the boost to earnings,'" said Maki Sawada, a strategist at Nomura Securities.

"Instead it's the rise in U.S. yields that's behind the weaker yen that is making investors nervous."

Growth shares took an outsized hit, with a Topix sub-index of the stocks retreating 0.87%, compared with a 0.57% decline for a sub-index of value shares.

Several big tech names also sold off after disappointing with earnings, with startup investor SoftBank Group's 7.6% slump making it the Nikkei's biggest drag. Sony Group lost 2.72%.

Nintendo slipped 2.88%, as investors took profits following a sharp two-day rally on robust earnings and game sales.

Financial results created a yawning gap between the biggest winners and losers in the session, with engineering company JGC and camera maker Nikon 7731.T> each tumbling in excess of 10%, while chemical company Resonac soared more than 10%.

Japanese earnings season reaches a crescendo on Friday, with about 650 reporting, including chip-making equipment giant Tokyo Electron, before mostly coming to an end on Tuesday of next week. (Reporting by Kevin Buckland; Editing by Rashmi Aich)