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 |

5.5.2. 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 |

5.6.2. 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 |