NeXT Computer / NeXTCube Capacitor Lists

Elemenoh

Active Tinkerer
Oct 18, 2021
433
421
63
Bay Area
I'm in the process of recapping a couple of NeXTCubes and was a little surprised it's kind of hard to find good cap info. So here's an attempt. The MLB/PSU info here is based on an early serial NeXT Computer. So your milage may vary if there are other revisions of these boards. The Magneto Optical drive cap info is based on a thread from NeXTComputers.org.

Note the MO drive cap sizes are very small through-hole caps. Be careful when ordering. I had to source from both DigiKey and Mouser to get the right sizes.

Main Logic Board

QuantityTypeCapacitance (uF)Voltage RatingSizeLead Spacing (est.)
6SMD4716CN/A
4Through Hole2202510x125

Power Supply​

QuantityLocation(s)TypeCapacitanceVoltage RatingSize (mm D x H)Lead Spacing (est.)
2C122, C123Through Hole78040040x5210mm LI type
2 — 1.2x6 mm
2C124, C125Through Hole1025022x4011
1C209Through Hole8,2001618x408
1C210Through Hole2,2001616x208
1C211Through Hole3,9001616x308
1C212Through Hole1,5001612.5x245
2C213, C214Through Hole15,0006.318x408
1C215Through Hole10,0006.316x408
1C216Through Hole220258x135
2C217, C223Through Hole100256.5x135
2C174, C218Through Hole11006.5x135
1C220Through Hole47255x135
2C173, C221Through Hole0.471005x5x135
2C178, C179Through Hole10635.5x135

Magneto Optical (MO) Drive​

QuantityLocation(s)TypeCapacitanceVoltage RatingSize (mm D x H)Lead Spacing (est.)
9Analog C221/C266/C269 (3)
Digital C421/C433/C447/C448/C477 (5)
Motor C9 Rev B (1)
Through Hole10164x61.5
1Hidden cap behind eject motorThrough Hole10254x61.5
5Motor C4/C5/C6/C7/C8 — 50V covers both Rev A and Rev BThrough Hole10505x62
5Analog C281/C244 (2)
Motor C2 Rev B (1) OR Motor C1/C2/C30 Rev A (3)
Through Hole1504x61.5
1Motor C3Through Hole2.2504x61.5
2Analog C306/C369 — must be polarizedThrough Hole3.3505x62
2Motor C31/C32 — Rev A only; skip if Rev BThrough Hole22105x62
2Analog C364/C365Through Hole22165x62
7Analog C277/C279/C303/C352/C353/C354/C355Through Hole47166.3x62.5
1Motor C11 — blue body, not electrolyticThrough Hole1016N/A
 
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