What the part number tells you about fit
The TAJA684K050ANJ part number decodes to a 0.68 µF capacitance (684 = 68 × 10^4 pF) and a 50 V voltage rating. The 'A' suffix indicates the 1206 (3216 metric) case size, which is the standard footprint for the TAJ series A-case. Polarity is marked on the capacitor body with a stripe on the positive terminal.
Package format for reel-fed assembly
The reel format suits volume production runs where the capacitor is loaded directly into the feeder.