Lawtronics: Heatsink Enclosures

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Heatsink Enclosures
These extruded aluminium channels are designed to be used as robust, low impedance, electronics enclosures, but can also be used as free-standing heatsink. Two different extrusions are available, providing a range of sizes and styles. The standard heatsink (HSK) is designed to form an 83mm high enclosure capable of housing a 100VA toroidal transformer. A similar low profile heatsink (LHSK) forms an enclosure 56mm high.

Standard Heatsink Enclosure (HSK)
A free-standing or 3U rack mount enclosure is achieved by combining two interlocking channels with end panels. Eurocard circuit boards can slide into internal card guides enabling power devices to be attached to the heatsink section of the vertical wall with an M3 screw and half nut. There is no need for drilling. Two boards can be mounted within the enclosure, and a standard spacer can be used to support heavy components.

Low thermal impedance heatsink
Suitable as heat sink enclosure or as 3U rack plug in unit
Accepts Eurocard boards (100 x 160mm or 100 x 220mm)
Simple fitting of power devices (M3 x 7 screw and half nut)
Enclosure gives RFI protection
Accommodates toroidal transformer rated up to 100VA
Internal & external M4 nut "T" slots
Other lengths available (subject to minimum quantity)

HSK SPECIFICATION		HSK DIMENSIONS (mm)
Extrusion:	HE9TF aluminium. Black anodised. Standard length 160 or 220mm; Normal wall thickness 2mm; thickness adjacent to power devices 7mm
End panels:	HE9TF aluminium. Black anodised 1.6mm with four mounting holes

Standard Heatsink (Single U channel)
	Part No	Length	°C/W	Finish	Mass
	HS/160	160mm	2.0	Black	0.35kg
	HS/220	220mm	1.8	Black	0.46kg

Standard Heatsink Enclosure Kit

Consists of:

two extrusion channels
two end panels with fixing holes
eight No4 6mm black self tap screws
four self adhesive feet

Part No Length °C/W Finish Mass

HSK/160 160mm 2.0 Black 0.8kg

HSK/220 220mm 1.8 Black 1.0kg

Low Profile Heatsink Enclosure (LHSK)
A free-standing or 3U rack mount enclosure is achieved by combining two interlocking channels with end panels. Eurocard circuit boards can slide into internal card guides enabling power devices to be attached to the heatsink section of the vertical wall with an M3 screw and half nut.
PCB's can be mounted vertically or horizontally within the enclosure, and a spacer can be used to support heavy components.

Low thermal impedance heatsink
Suitable as heat sink enclosure or as 3U rack plug in unit
Accepts Eurocard boards (100 x 160mm) or narrower PCB's
Simple fitting of power devices (M3 x 7 screw and half nut)
Enclosure gives RFI protection
External M4 nut "T" slots
Other lengths available (subject to minimum quantity)

LHSK SPECIFICATION		LHSK DIMENSIONS (mm)
Extrusion:	HE9TF aluminium. Black anodised. Standard length 160mm; Normal wall thickness 2-3mm;
End panels:	HE9TF aluminium. Black anodised 1.6mm thick with four mounting holes

Low Profile Heatsink (Single U channel)
	Part No	Length	°C/W	Finish	Mass
	LHS/160	160mm	2.3	Black	0.25kg

Low Profile Heatsink Enclosure Kit

Consists of:

two extrusion channels
two end panels with corner mounting holes
eight No4 6mm black self tap screws
four self adhesive feet

Part No Length °C/W Finish Mass

LHSK/160 160mm 2.3 Black 0.55kg

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