Connector Information¶
The MitySOM-5CSx modules use the connectors designed to meet the MXM specification as the physical edge connector interface but it is not compatible with the MXM specification. The main power input is 5V.
- The MitySOM Module is compatible with either the 314 loaded contact connectors or the 310 loaded contact connectors.
- The 4 additional pins are accounted for on the module gold fingers and can be connected, or left as no-connects, on the baseboard MXM footprint. The pin connections on the module are as follows:
- E1-10 = No Connect
- E2-10 = No Connect
- E3-1 = GND
- E4-1 = GND
- The 4 additional pins are accounted for on the module gold fingers and can be connected, or left as no-connects, on the baseboard MXM footprint. The pin connections on the module are as follows:
- Pins 278 and 280 on the MitySOM-5CSx modules are required to be separate pins on any connector that is used; most appear to be this way.
Critical Link has used the following connectors and can provide Altium footprints upon request:¶
| Manufacturer | Part Number | Datasheet/Product Page | Note |
| JAE | MM70-314-310B1-2-R300 | Datasheet Drawing | This part is EOL - Replaced with MM70-314-B1-2-R300 This is a 0.3uM gold plating thickness with 3.0mm board height |
| JAE | MM70-314-310B1-1-R300 | Datasheet Drawing | This part is EOL - Replaced with MM70-314-B1-2-R300 This is a 0.1uM gold plating thickness with 3.0mm board height |
| Yamaichi | CNU113-314-2201-VE | https://www.yamaichi.de/products/connector-solutions/internal-connectors/board-edge-connector-bec/high-speed-board-edge-connector-with-314-pins-smt.html | 5mm board height PCB to SoM bottom |
The following connectors are compatible with the MitySOM-5CSX, Critical Link has not used them:¶
- These connectors will need footprint updates/changes compared to our Dev Board, which implemented the JAE MM70-314-310 series originally.
- Please contact your Critical Link account representative for further assistance in confirming compatibility of any connector.
| Manufacturer | Part Number | Datasheet/Product Page | Note |
| JAE | MM70-314-B1-2-R300 | Marketing Bulletin and Drawing | 314 Pin Connector - Replacement for 310 Pin JAE - Active |
| Amphenol | 10151114-00xTLF | https://www.amphenol-icc.com/pcie-mxm-10151114001tlf.html? | 5mm PCB to SoM - "x" is either 1, 2 or 3 for contact finish |
| Aces | 91781-314xx-xx-xx | http://www.acesconn.com/series/91781-314xx-xxx/839 | 5.2mm (2.7mm PCB to SoM) Active and Distributed by keiconn.com |
| Aces | 91782-314xx-xx-xx | http://www.acesconn.com/series/91782-314xx-xxx/840 | 7.5 mm (5.0mm PCB to SoM)Active and Distributed by keiconn.com |
| Aces | 91783-314xx-xx-xx | http://www.acesconn.com/series/91783-314xx-xx-xx/838 | 4.8 mm (2.3mm PCB to SoM) Active and Distributed by keiconn.com |
| Foxconn | AS0B826-S43B-7H | https://www.avnet.com/shop/us/products/foxconn-interconnect-technology/as0b826-s43b-7h-3074457345639455189/ | 4.3mm (TBD PCB to SoM) Distributed by Avnet |
| Foxconn | AS0B826-S55B-7H | Contact Avnet | 5.5mm (2.7mm PCB to SoM) Distributed by Avnet |
| Foxconn | AS0B826-S78B-7H | https://www.avnet.com/shop/us/products/foxconn-interconnect-technology/as0b826-s78b-7h-3074457345639455186/ | 7.8mm (TBD PCB to SoM) Distributed by Avnet |
- Note: The tallest components are 1.2mm or less on the bottom of the module however solder paste variance will cause these final heights to vary. Please contact Critical Link prior to use of any connectors height less than 2.7mm PCB to PCB height for a detailed analysis of your carrier board and to verify no components heights have changed since this analysis.
Multi-Manufacturer Compatible Footprint¶
Critical Link has evaluated the datasheets for each of the manufacturers footprints listed above. It is our belief that a footprint compatible with all manufacturers connectors can be generated thus allow any connector to be used based on availability at any given time. Please contact info@criticallink.com for additional details including a proposed footprint.
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