Semiconductor device and lead frame combination

Details Semiconductor device and lead frame combination Semiconductor device and lead frame combination

1994-12-13

1996-04-09

Ngo, Ngan V.

Active solid-state devices (e.g., transistors, solid-state diode

Regenerative type switching device

With housing or external electrode

257178, 257180, 257676, H01L 2774, H01L 31111

Patent

active

055064256

ABSTRACT:
An optically-triggered silicon controlled rectifier (SCR) device (21) mounted on a lead frame (34). The SCR device contains a cathode layer (24), an optical gate or control layer (23), and an anode layer (31) formed on a semiconductor substrate (22). The device is soldered onto a pedestal (33) formed on the lead frame. To connect the device to the lead frame, solder is deposited upon the anode layer and the solder fixes the anode layer to the pedestal on the lead frame. The pedestal may be formed by etching or stamping a depression (35) in the lead frame. The device is centered on the pedestal such that the edges of the device are located adjacent the depression, and are spaced from the lead frame.

REFERENCES:
patent: 3928093 (1975-12-01), Van Tongerloo et al.

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