Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-220F
Pinout of 2SC3944-Q
Here is an image showing the pin diagram of this transistor.
Classification of hFE
The 2SC3944-Q transistor can have a current gain of 90 to 155. The gain of the 2SC3944 will be in the range from 65 to 330, for the 2SC3944-P it will be in the range from 65 to 110, for the 2SC3944-R it will be in the range from 130 to 220, for the 2SC3944-S it will be in the range from 185 to 330.
Marking
Sometimes the "2S" prefix is not marked on the package - the 2SC3944-Q might only be marked "C3944-Q".
Complementary PNP transistor
The complementary PNP transistor to the 2SC3944-Q is the 2SA1535-Q.
SMD Version of 2SC3944-Q transistor
The 2N5551S (SOT-23), DXT5551 (SOT-89), DZT5551 (SOT-223), FMMT625 (SOT-23), KST5551 (SOT-23) and MMBT5551 (SOT-23) is the SMD version of the 2SC3944-Q transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.
Replacement and Equivalent for 2SC3944-Q transistor