Board Level
Heat Sinks
36
BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS
Aluminum and Copper Low-Cost Wave-Solderable Heat Sinks
Height Above Thermal Performance at Typical Load
Standard PC Board Maximum Footprint Natural Forced Weight
P/N in. (mm) in. (mm) Material Convection Convection lbs. (grams)
286-AB 1.190 (30.2) 1.000 (25.4) x 0.500 (12.7) Aluminum, Anodized 58°C @ 4W 7.4°CW @ 200 LFM 0.0085 (3.86)
286-CBTE 1.190 (30.2) 1.000 (25.4) x 0.500 (12.7) Copper, Black 58°C @ 4W 7.4° CW @ 200 LFM 0.0250 (11.34)
286-CTE 1.190 (30.2) 1.000 (25.4) x 0.500 (12.7) Copper, Tinned 58°C @ 4W 7.4° CW @ 200 LFM 0.0250 (11.34)
Efficient heat removal at low cost can be achieved by inserting the 286 Series di-
rectly into pre-drilled circuit boards; scored mounting tabs may be bent after in-
sertion to provide added stability. The 286 Series can be wavesoldered directly to
the board. Material: 286-AB style (aluminum, black anodized), 286-CBT style
(copper, black paint tin tabs), and 286-CT style (copper, tinned).
TO-220
MECHANICAL DIMENSIONS NATURAL AND FORCED
CONVECTION CHARACTERISTICS
286 SERIES
Dimensions: in. (mm)
Wave-Solderable Low-Cost Heat Sinks
Height Above Maximum Thermal Performance at Typical Load
Standard P/N PC Board Footprint “A” Natural Forced Weight
Mounting Slot Mounting Hole in. (mm) in. (mm) Convection Convection lbs. (grams)
287-1ABE 287-1ABH 1.180 (30.0) 1.000 (25.4) x 0.500 (12.7) 65°C @ 4W 7.8°CW @ 200 LFM 0.0090 (4.08)
287-2ABE 287-2ABH 1.180 (30.0) 1.000 (25.4) x 1.000 (25.4) 55°C @ 4W 6.4°CW @ 200 LFM 0.0140 (6.35)
Material: Aluminum, Black Anodized
Mount these cost-effective TO-220 heat sinks vertically into pre-drilled printed
circuit boards. Soldered, pre-tinned tabs can be wavesoldered directly to the
board. A 0.375 in. (9.5 mm) mounting slot allows for correct positioning of TO-
220 and similar semiconductor packages.
TO-220
MECHANICAL DIMENSIONS NATURAL AND FORCED
CONVECTION CHARACTERISTICS
287 SERIES
Dimensions: in. (mm)
Standard P/N Dim. “A”
287-1AB 0.500 (12.7)
287-2AB 1.000 (25.4)
287-1ABH 0.500 (12.7)
287-2ABH 1.000 (25.4)
See also 286DB Series on Page 7.
285 SC and 330 SC SpeedClips™ Zif Socket 8 And
387 SPGA LIF
Standard Nominal Installed For Use Weight
P/N Loading Force With Series Material lbs. (grams)
285 SC 10 lbs 232, 237, 240, 252, 667 Carbon Steel 0.00053 (0.24)
330 SC 4 lbs 232, 237, 240, 252, 667 Stainless Steel 0.00074 (0.34)
SpeedClips™ employ a locking safety tab for mounting. Must be ordered sepa-
rately for these heat sink series. Use these SpeedClips™ with our 237, 240, and
252 Series heat sinks for the lowest production assembly time and cost. Order
one SpeedClip™ for each heat sink purchased. Must be purchased with heat
sinks.
MECHANICAL DIMENSIONS Speed
Clip
330 SC
4 lb (17.8N)
Nominal Force
Installed
Speed
Clip
285 SC
10 lb (44.5N)
Nominal Force
Installed
Dimensions: in. (mm)
287 SERIES
286 SERIES
285 & 330 SERIES