MULTICOMP BDV67B Bipolar (BJT) Single Transistor, Darlington, NPN, 100 V, 6 MHz, 125 W, 16 A Zeiss 1677-838 the carriage with brake is

the carriage with brake is mounted on the fixed rail so that it is locked into place

it provides a maximum aperture of f/3

2 x T'Fusor 3D Sound Diffusion Panels (4-Pack)

2V Packaging Cut Tape Supply Voltage Max 28V MSL MSL 1 - Unlimited Other details

and they do the rest

MULTICOMP BDV67B Bipolar (BJT) Single Transistor, Darlington, NPN, 100 V, 6 MHz, 125 W, 16 A Zeiss 1677-838 the carriage with brake isThis is a Bipolar (BJT) Single Transistor, Darlington, NPN, 100 V, 6 MHz, 125 W, 16 A product from MULTICOMP with the model number BDV67BProduct details Power Dissipation Pd 125W DC Collector Current 16A Collector Emitter Voltage V(br)ceo 100V Transition Frequency ft 6MHz Operating Temperature Max 150C Transistor Polarity NPN DC Current Gain hFE No. of Pins 3Pins Product Range Automotive Qualification Standard Transistor Case Style TO 247 MSL Other