ingaas APD WITH inTERNAL PREAMPLIFIER in coaxial packaGE FOR 2.5 Gb/s APPLICATIONS ingaas APD with internal preamplifier for 2.5 Gb/s applications. With SC-UPC connector. Flat mount flang. ingaas APD with internal preamplifier for 2.5 Gb/s applications. With SC-UPC connector. Vertical flang.