Operating and Storage Junction Temperature Range: -55 to +150 °C
Package: TO-92
Pinout of 2N4403
The 2N4403 is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the emitter, base, and collector leads. Here is an image showing the pin diagram of this transistor.
Complementary NPN transistor
The complementary NPN transistor to the 2N4403 is the 2N4401.
SMD Version of 2N4403 transistor
The 2SA1518 (SOT-23), 2SA1519 (SOT-23), 2SA1520 (SOT-23), 2SA1521 (SOT-23), BC807 (SOT-23), BC807W (SOT-323), BCX17 (SOT-23), KST4403 (SOT-23), MMBT4403 (SOT-23), MMST4403 (SOT-323), PMBT4403 (SOT-23) and PMST4403 (SOT-323) is the SMD version of the 2N4403 transistor. These transistors are of the same type, have similar parameters and are designed for surface mounting.