5. Mechanical

5.1. TX module outline

Module	L	W	A	B
TX25	67.6mm	26mm	1.4mm	1.3mm
TX27			1.8mm	1.0mm
TX28			1.8mm	1.1mm
TX48			1.8mm	1.1mm
TX51			1.8mm	1.1mm
TXUL			1.8mm	1.1mm
TX8M			1.8mm	1.1mm
TX53		31mm	1.8mm	1.3mm
TX6			2.0mm	1.1mm

5.2. SO-DIMM connector

For detailed information on socket dimensions and recommended PCB layout refer to the manufacturer datasheets. Be sure to use DDR SO-DIMM type sockets with 2,5V keying.

Part number	Socket height	Overall mounting height	Underside space	Supplier
1565691-1	4.0mm	4.5mm	0.5mm	Tyco Electronics
AS0A426-E4SN-7F				Foxconn
SODIMM200S52T25	5.2mm	5.7mm	1.7mm	admatec
AS0A426-E2SN-7F				Foxconn
1473005-1				Tyco Electronics
AS0A426-B6SN-7F	6.5mm	7.0mm	3.0mm	Foxconn
1717468-3				Tyco Electronics
AS0A426-B8SN-7F	8.0mm	8.5mm	4.5mm	Foxconn
SODIMM200S92T25	9.2mm	9.7mm	5.7mm	admatec
AS0A426-EASN-7F				Foxconn

Typical DDR SO-DIMM Socket specifications

• Duarbility: 25 Cycles
• Voltage Rating: 25V
• Current Rating: 0.5A (Tyco Electronics 1473005-1)
• Contact Resistance: 50mΩ max.
• Dielectric Withstanding Voltage: 250V AC/1 min.
• Insulation Resistance: 100 MΩ
• Operating Temperature: -40℃ to +85℃

5.3. DIMM Connector PCB Layout example

The position of the TX module mounting holes depend on the used DIMM socket. The following example applies to a Tyco socket 1473005-1.

5.4. TX Fastener Kit

A fastener kit provides secure mounting of modules plugged into the SO-DIMM socket. An additional thread locker is recommended to hold the screws in during vibration.

Ka-Ro Part Number	Description	Image	Quantity
TX00-ZV02 (Fastener Kit / 10 sets)	Self Retaining Screw Spacer for M2,0 Length 3,0 mm, Outside Diameter 4,00 mm www.ettinger.de part. no. 07.51.403		20
	Nut M2,0		20
	Screw M2,0 x 8mm		20

5.5. TX Heatsink Kit (17 K/W)

Ka-Ro p/n	Item	Description	Image	Quantity
TX00-ZV06	Heatsink	Fischer Elektronik GmbH, customised SK 473, 27mm x 68mm x 6mm		1
	Spacer	Self Retaining Screw Spacer for M2,0, Length 3,0 mm, Outside Diameter 4,00 mm www.ettinger.de p/n 07.51.403		2
		Screw Spacer for M2,0 Length 2,0 mm, Outside Diameter 4,00 mm www.ettinger.de p/n 05.81.020		2
	Thermal gap filler	Fischer Elektronik GmbH, heat conductive gel foil GEL 10		20mm x 20mm
	Screw	Screw M2,0 x 10mm		2

5.5.1. Standard extruded heatsink – SK 473 – length 68mm

5.5.2. Heat conductive gel foil – GEL 10

Fischer Elektronik GEL 10 datasheet
version	standard
material	GEL foil
material thickness	1 mm
tolerance	0.2
thermal conductivity	1.5 W/m·K
volume resistivity	>1·106 MΩ/m
Rth	1.02 °C in2/W
hardness range	< 49 Shore 00
temperature range	-60 °C … +200 °C
extensibility	100 %
dielectric constant	5.8 [50 Hz] 5.6 [1 KHz] 5.5 [1 MHz]
dielectric loss factor	0.048 [50 Hz] 0.015 [1 KHz] 0.003 [1 MHz]
dielectric strength	14 kV/mm (AC)
tightness	2.6 g/cm3
class of flammibility	UL 94 V-0
type of delivery	on both sides covered with protective foil material

5.6. TX Heatsink Kit (7 K/W)

The TX Heatsink Kit provides also a secure mounting of the module.

Ka-Ro p/n	Item	Description	Image	Quantity
TX00-ZV07	Heatsink	Fischer Elektronik GmbH, customised SK 560, 27mm x 68mm x 14mm		1
	Spacer	Self Retaining Screw Spacer for M2,0, Length 3,0 mm, Outside Diameter 4,00 mm www.ettinger.de p/n 07.51.403		4
	Thermal gap filler	Fischer Elektronik GmbH, heat conductive gel foil GEL 27 S 25		57mm x 15mm
	Screw	Screw M2,0 x 12mm		2

5.6.1. Standard extruded heatsink – SK 560 – length 68mm

5.6.2. Heat conductive gel foil – GEL 27 S 25

Fischer Elektronik GEL 27 S 25 datasheet
material thickness	2.5 mm
thermal conductivity	2.7 W/m·K
volume resistivity	2·107 MΩ/m
Rth	0.94 °C in2/W
hardness range	45 Shore 00
temperature range	-60 °C … +200 °C
extensibility	45 %
dielectric strength	15 kV/mm
tightness	3 g/cm3
class of flammibility	UL 94 V-0
type of delivery	on both sides covered with protective foil material