Found 3 alternatives for MTMS7700T38 by Marktech Optoelectronics. Led Emitters Infrared Uv Visible — TO-5 Variant, 8 Leads, Lens Top Metal Can.
EMITTER IR UV MULTI-NM TO-5-8
EMITTER IR 950NM 100MA TO-5-8
EMITTER IR 880NM 100MA TO-5-8