56

57

wakefield-vette.com

Contact us: (603) 635-2800

BOARD LEVEL

HEAT SINKS

BOARD LEVEL

HEAT SINKS

242 SERIES LOW-COST, LOW-HEIGHT WAVE-SOLDERABLE HEAT SINKS

NATURAL AND FORCED

CONVECTION CHARACTERISTICS

242-125AB-22

LABOR-SAVING TWISTED FIN HEAT SINKS

MECHANICAL DIMENSIONS

NATURAL AND FORCED

CONVECTION CHARACTERISTICS

240-118ABH-22

Dimensions: in. (mm)

Dimensions: in. (mm)

240-118ABS-22

MECHANICAL DIMENSIONS

NATURAL AND FORCED

CONVECTION CHARACTERISTICS

274-XAB-01

274-XAB-02

Dimensions: in. (mm)

274 SERIES

281 SERIES

LOW-COST, LOW-HEIGHT WAVE-SOLDERABLE

HEAT SINKS

Height Above

Footprint

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-ABE-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-ABE-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

MECHANICAL DIMENSIONS

NATURAL AND FORCED

CONVECTION CHARACTERISTICS

273-AB

273-AB-01

273-AB-02

273 SERIES

LOW-COST, LOW-HEIGHT WAVE-SOLDERABLE

HEAT SINKS

274 & 281 SERIES

240 SERIES

MECHANICAL DIMENSIONS

Thermal Performance at Typical Load

Height Above

Footprint

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

274-1ABE-01

.375 (9.5)

.520 (13.2) x .750 (19.1)

Vertical

01

Mtg Hole

56°C @ 2W

8.0°C/W @ 400 LFM

274-1ABE-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

274-2ABE-01

.500 (12.7)

.520 (13.2) x .750 (19.1)

Vertical

01

Mtg Hole

50°C @ 2W

7.0°C/W @ 400 LFM

274-2ABE-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

274-3ABE-01

.250 (6.4)

.520 (13.2) x .750 (19.1)

Vertical

01

Mtg Hole

62°C @ 2W

9.0°C/W @ 400 LFM

274-3ABE-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

Material: Aluminum, Black Anodized

Thermal Performance at Typical Load

Height Above

Footprint

Standard

PC Board

Dimensions

Mounting

Solderable

Mounting

Natural

Forced

P/N

in. (mm)

in. (mm) Configuration Tab Options Style

Convection Convection

240-118ABEH-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

240-118ABES-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

Thermal Performance at Typical Load

Height Above

Footprint

Standard

PC Board

Dimensions

Mounting

Solderable

Mounting

Natural

Forced

P/N

in. (mm) in. (mm) Configuration Tab Options Style

Convection

Convection

242-125ABE-22 1.285 (32.6)

.875 (22.2) x .250 (6.4)

Vertical

22

Mtg Hole

48°C @ 2W

6.2°C/W @ 400 LFM

Material: Aluminum, Black Anodized

Thermal Performance at Typical Load

BOARD LEVEL POWER SEMICONDUCTOR HEAT SINKS

Dimensions: in. (mm)

TO-220

TO-220

TO-220

TO-220 and TO-218