Two transistors which will replace a multitude of common hard to get devices.PNP general purpose amplifier at collector currents to 500mA.PN200 replaces PN2907, PN2907A, PN3638, PN3638A, PN3640, PN3644, PN4121, PN4143, PN4248, PN4249, PN4250, PN4355,...