MBRP20060 ON Semiconductor, MBRP20060 Datasheet - Page 5

• Manufacturer Part Number: MBRP20060
• Manufacturer: ON Semiconductor

heat sink. It is important to follow the proper tightening sequence to avoid warping the heat sink, which can reduce thermal
contact between the POWERTAP and heat sink.
STEP 1:
Locate the POWERTAP on the heat sink and
start mounting bolts into the threads by hand
(2 or 3 turns).
STEP 2:
Finger tighten the center bolt. The bolt may
catch on the threads of the heat sink so it is
important to make sure the face of the bolt or
washer is in contact with the surface of the
POWERTAP.
STEP 3:
Tighten each of the end bolts between 5 to 10
in-lb.
STEP 4:
Tighten the center bolt between 8 to 10 in-lb.
STEP 5:
Finally, tighten the end bolts between 30 to 40
in-lb.
The POWERTAP package requires special mounting considerations because of the long longitudinal axis of the copper
Terminal Penetration:
Terminal Torque:
Mounting Torque —
Mounting Torque —
Seating Plane
Outside Holes:
Center Hole:
Flatness
MAXIMUM MECHANICAL RATINGS
Note: While the POWERTAP is capable of sustaining these vertical and levered tensions, the intimate contact
Note:
Note:
between POWERTAP and heat sink may be lost. This could lead to thermal runaway. The use of very
flexible leads is recommended for the anode connections. Use of thermal grease is highly recommended.
0.235 max
25−40 in-lb max
30−40 in-lb max
8−10 in-lb max
1 mil per in.
(between mounting holes)
MOUNTING PROCEDURE
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30 −40 IN-LB
2 −3 TURNS
2 −3 TURNS
5 −10 IN-LB
5 −10 IN-LB
5
APPLIES OVER OPERATING TEMPERATURE
POWER
POWER
POWER
POWER
POWER
HEAT
HEAT
HEAT
HEAT
HEAT
POWERTAP MECHANICAL DATA
250 lbs. max
Vertical Pull
FINGER-TIGHT
FINGER-TIGHT
2 −3 TURNS
8 −10 IN-LB
8 −10 IN-LB
SINK
SINK
SINK
SINK
SINK
TAP
TAP
TAP
TAP
TAP
2 in. Lever Pull
50 lbs. max
30 −40 IN-LB
2 −3 TURNS
2 −3 TURNS
5 −10 IN-LB
5 −10 IN-LB
2″