TPA3251 (TPA3255) aka "model tiny" in aluminium case

Based on the "Shrink Mod" this TPA3251 amplifier variant is built in an aluminium enclosure, which also serves for the heat dissipation.

The heat transmission occurs through soldered copper plates as a heat bridge from the TPA3251 to the inner enclosure body. The distance of 3.2 mm is being bridged and linked by a thermal pad with a thickness of 150um.

TPA3251D2 60x60mm PCB #1

TPA3251D2 60x60mm PCB #1

TPA3251 copper heat Bridge #1

TPA3251 copper heat Bridge #1

TPA3251 aluminum mounting

TPA3251 aluminum mounting

TPA3251 copper heat Bridge #2

TPA3251 copper heat Bridge #2

Front and back are closed off with smoked glass (acrylic), air ducts take care for the chimney effect.

TPA3251 aluminum enclosure #1

TPA3251 aluminum enclosure #1

TPA3251 aluminum enclosure #2

TPA3251 aluminum enclosure #2

TPA3251 aluminum enclosure #3

TPA3251 aluminum enclosure #3

TPA3251 aluminum enclosure #4

TPA3251 aluminum enclosure #4

TPA3251 Aluminum Enclosure #5

TPA3251 Aluminum Enclosure #5

Total dimensions: 100*66*43mm (L*B*H)

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