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giboni -

From my initial post:
AC Current Gain (hfe) ... is defined as the ratio of the input current to the output current in a device, and depends on the operating frequency. Ft and hfe work together to define the overall AC gain of the transistor at a specific frequency (fo). hfe is calculated using the formula: hfe=Ft/fo. (Where fo is the operating freq.)
Example: For the 2SC1730L at an fo of 27mhz, hfe=1100/27=40.8

[QUOTE="unit_399, post: 509671, member: 7311"] giboni - From my initial post: AC Current Gain (hfe) ... is defined as the ratio of the input current to the output current in a device, and depends on the operating frequency. Ft and hfe work together to define the overall AC gain of the transistor at a specific frequency (fo). [B][I]hfe is calculated using the formula: hfe=Ft/fo. (Where fo is the operating freq.)[/I][/B] Example: For the 2SC1730L at an fo of 27mhz, hfe=1100/27=40.8 [/QUOTE]

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