274-2ABE-02 [OHMITE]
Heat Sink;
OHMITE MFG. CO. 
BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS
TO-220
Low-Cost, Low-Height Wavesolderable Heat Sinks
274 & 281 SERIES
Height Above
Footprint
Thermal Performance at Typical Load
Standard
P/N
PC Board
in. (mm)
Dimensions
in. (mm)
Mounting
Solderable
Tab Options
Mounting
Style
Natural
Forced
Configuration
Convection
Convection
274-1AB
.375 (9.5)
.375 (9.5)
.375 (9.5)
.500 (12.7)
.500 (12.7)
.500 (12.7)
.250 (6.4)
.250 (6.4)
.250 (6.4)
.375 (9.5)
.500 (12.7)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
.520 (13.2) x .750 (19.1)
Vert./Horiz.
Vertical
No Tab
01
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
Mtg Hole
56°C @ 2W
56°C @ 2W
56°C @ 2W
50°C @ 2W
50°C @ 2W
50°C @ 2W
62°C @ 2W
62°C @ 2W
62°C @ 2W
56°C @ 2W
50°C @ 2W
8.0°C/W @ 400 LFM
8.0°C/W @ 400 LFM
8.0°C/W @ 400 LFM
7.0°C/W @ 400 LFM
7.0°C/W @ 400 LFM
7.0°C/W @ 400 LFM
9.0°C/W @ 400 LFM
9.0°C/W @ 400 LFM
9.0°C/W @ 400 LFM
8.0°C/W @ 400 LFM
7.0°C/W @ 400 LFM
274-1ABE-01
274-1ABE-02
274-2AB
Vertical
02
Vert./Horiz.
Vertical
No Tab
01
274-2ABE-01
274-2ABE-02
274-3AB
Material: Aluminum,
Black Anodized
Vertical
02
Vert./Horiz.
Vertical
No Tab
01
274-3ABE-01
274-3ABE-02
281-1AB
Vertical
02
Vertical
No Tab
No Tab
281-2AB
Vertical
NATURAL AND FORCED
CONVECTION CHARACTERISTICS
MECHANICAL DIMENSIONS
274 SERIES
274-XAB-02
274-XAB-01
274 SERIES
281 SERIES
Dimensions: in. (mm)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
2
相关型号：
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