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Square black 120 mm case fan 38 mm thick with tachometer wire

Fans

Fans TA450DC B34659-57 120*120*38mm 12V 0.77A case fan

SKU CH-DF85-7W7RX

120 mm case fan with tachometer, 12 V, 0.77 A, 38 mm thick

  • 120 mm square frame fits standard case mounts
  • 38 mm thick profile moves more air through dense meshes
  • 12 V 0.77 A draw keeps power load low
  • Tachometer signal lets the board monitor fan speed

120 mm case fan with tachometer

This 120 mm case fan measures 120 by 120 by 38 mm and runs on 12 V power. It draws 0.77 A and includes a tachometer for speed monitoring. The unit is supplied new from Nidec under part number TA450DC B34659-57.

Tachometer feedback for fan control

The built-in tachometer signal lets the motherboard or fan controller read actual rotor speed. This enables automatic speed curves and alerts if the fan stalls. Systems without a tachometer input cannot use this feedback.

How it compares

Measured against everything we stock in PC Cooling Fans, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 60% of the 8,339 comparable items (median $19.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What does the 0.77 A current draw mean for my fan header?

The fan draws 0.77 A at 12 V, so your motherboard header or fan controller must be rated for at least that much current per channel.

The listing mentions a tachometer — what connector standard does it use?

A tachometer signal requires a three-pin or four-pin fan header; the third wire carries the RPM signal back to the motherboard.

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