Board Level

Heat Sinks

All other products, please contact factory for price, delivery, and minimums.

Normally stocked

34

BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS

273 SERIES

Low-Cost, Low-Height Wavesolderable Heat Sinks

TO-218, TO-220

Height Above

Footprint

Thermal Performance at Typical Load

Standard

PC Board

Dimensions

Mounting

Solderable

Mounting

Natural

Forced

P/N

in. (mm)

in. (mm)

Configuration

Tab Options

Style

Convection

Convection

273-AB

.375 (9.5)

.750 (19.1) x .750 (19.1)

Vert./Horiz.

No Tab

Mtg Hole

49°C @ 2W

7.2°C/W @ 400 LFM

273-AB-01

.375 (9.5)

.750 (19.1) x .750 (19.1)

Vertical

01

Mtg Hole

49°C @ 2W

7.2°C/W @ 400 LFM

273-AB-02

.375 (9.5)

.750 (19.1) x .750 (19.1)

Vertical

02

Mtg Hole

49°C @ 2W

7.2°C/W @ 400 LFM

Material: Aluminum, Black Anodized

Dimensions: in. (mm)

MECHANICAL DIMENSIONS

NATURAL AND FORCED

CONVECTION CHARACTERISTICS

273-AB

273-AB-01

273-AB-02

273 SERIES

274 SERIES

Low-Cost, Low-Height Wavesolderable Heat Sinks

TO-220

Height Above

Footprint

Thermal Performance at Typical Load

Standard

PC Board

Dimensions

Mounting

Solderable

Mounting

Natural

Forced

P/N

in. (mm)

in. (mm)

Configuration

Tab Options

Style

Convection

Convection

274-1AB

.375 (9.5)

.520 (13.2) x .750 (19.1)

Vert./Horiz.

No Tab

Mtg Hole

56°C @ 2W

8.0°C/W @ 400 LFM

274-1AB-01

.375 (9.5)

.520 (13.2) x .750 (19.1)

Vertical

01

Mtg Hole

56°C @ 2W

8.0°C/W @ 400 LFM

274-1AB-02

.375 (9.5)

.520 (13.2) x .750 (19.1)

Vertical

02

Mtg Hole

56°C @ 2W

8.0°C/W @ 400 LFM

274-2AB

.500 (12.7)

.520 (13.2) x .750 (19.1)

Vert./Horiz.

No Tab

Mtg Hole

50°C @ 2W

7.0°C/W @ 400 LFM

274-2AB-01

.500 (12.7)

.520 (13.2) x .750 (19.1)

Vertical

01

Mtg Hole

50°C @ 2W

7.0°C/W @ 400 LFM

274-2AB-02

.500 (12.7)

.520 (13.2) x .750 (19.1)

Vertical

02

Mtg Hole

50°C @ 2W

7.0°C/W @ 400 LFM

274-3AB

.250 (6.4)

.520 (13.2) x .750 (19.1)

Vert./Horiz.

No Tab

Mtg Hole

62°C @ 2W

9.0°C/W @ 400 LFM

274-3AB-01

.250 (6.4)

.520 (13.2) x .750 (19.1)

Vertical

01

Mtg Hole

62°C @ 2W

9.0°C/W @ 400 LFM

274-3AB-02

.250 (6.4)

.520 (13.2) x .750 (19.1)

Vertical

02

Mtg Hole

62°C @ 2W

9.0°C/W @ 400 LFM

281-1AB

.375 (9.5)

.520 (13.2) x .750 (19.1)

Vertical

No Tab

Mtg Hole

56°C @ 2W

8.0°C/W @ 400 LFM

281-2AB

.500 (12.7)

.520 (13.2) x .750 (19.1)

Vertical

No Tab

Mtg Hole

50°C @ 2W

7.0°C/W @ 400 LFM

MECHANICAL DIMENSIONS

NATURAL AND FORCED

CONVECTION CHARACTERISTICS

274-XAB-01

274-XAB-02

274 SERIES

240 SERIES

Labor-Saving Twisted Fin Heat Sinks

TO-220

Height Above

Footprint

Thermal Performance at Typical Load

Standard

PC Board

Dimensions

Mounting

Solderable

Mounting

Natural

Forced

P/N

in. (mm)

in. (mm)

Configuration

Tab Options

Style

Convection

Convection

240-118ABH-22

1.180 (30.0)

1.000 (25.4) x .500 (12.7)

Vertical

22

Clip/Mtg Hole

55° C @ 4W

5.3° C/W @ 400 LFM

240-118ABS-22

1.180 (30.0)

1.000 (25.4) x .500 (12.7)

Vertical

22

Clip/Mtg Slot

55° C @ 4W

5.3° C/W @ 400 LFM

Material: Aluminum, Black Anodized

MECHANICAL DIMENSIONS

NATURAL AND FORCED

CONVECTION CHARACTERISTICS

240-118ABH-22

240-118ABS-22

240 SERIES

Dimensions: in. (mm)

Material: Aluminum,

Black Anodized

Dimensions: in. (mm)

274 SERIES

281 SERIES