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2N4987 Silicon Unilateral Switch (SUS)
TO−98 Type Package
Description:
The 2N4987 is a planar monolithic silicon integrated circuit having thyristor electrical characteristics closely approximating those of an “ideal” four layer diode. The device is designed to switch at 8V with a 0.02%/C temperature coefficient. A gate lead is provided to eliminate rat effect, obtain triggering information at lower voltages and to obtain transient free wave forms.
Silicon Unilateral Switches are specifically designed and characterized for use in monostable and bistable applications where low cost is of prime importance.
Applications:
D SCR Triggers D Frequency Dividers D Ring Counters D Cross Point Switching D Over−Voltage Sensors
Absolute Maximum Ratings:
Peak Reverse Voltage . . . . . . . . . . . .