Photo-Transistor Hermetic Optocouplers: OLH Series
Source: Skyworks Solutions, Inc.

The OLH2047, OLH2048, and OLH2049 are dual-channel, hermetic 8-pin DIP optocouplers designed especially for high reliability applications that require optical isolation with high CTR and low saturation VCE.
Each optocoupler channel consists of an LED and N-P-N silicon photo-transistor mounted and coupled in an 8-pin hermetically sealed DIP package. The pinout configuration is similar to MCT6 and ILD1/2/5 plastic optocouplers.
High-reliability screening and special CTR selections are available (contact Isolink for more information). Download the available datasheet to learn more.