CN074-085-0003 Datasheet, PDF (7/8 Pages) Yamaichi Electronics Co., Ltd. – AdvancedMC Connector for AdvancedTCA

Series CN074 / CN080 / CN084
AdvancedCMT - Compression Mount Technology
AdvancedMC
Connectors
CMT Speed
CMT allows the usage of blind via’s,
micro via’s or drillings with
a very small diameter thus
Blind via
- reducing stub-effects and reflexion
- reducing cross-talk and insertion loss
- providing characteristic impedance matching
- enabling transmission waveform @12.5 Gbps (see diagram below)
Compression Mount
Small drilling hole
Press fit hole
Buried via
Cross-section showing PCB holesrequired for press-fit
connections compared to small drilling holes or vias for CMT
Press-fit
CMT Flexibility
The usage of blind via’s, micro via’s or drillings
with very small diameter also provides
- more space for signal routing on the backplane
- possibilities to reduce the number of backplane layers up to 30%
- cost saving due to less backplane layers
Vertical Routing Channel
4 pair between MCH Tongues
3 pair in the middle of the connector
1 pair between MCH Tongues
2 in the middle of the connector
CMT Reliability
AdvancedCMT connectors from Yamaichi have proven their reliabilityunder vibration,
temperature etc. according to all relevant specifications for
both the CMT and the card edge connection area
AdvancedMC
Yamaichi is using wider contacts to compensate manufacturing
tolerances of the PCB
Case
- No additional “guiding” needed -
Card edge
Yamaichi contact shape has the contact point at the bending
contact
area (not at the stamping / cutting area)
- No damage of the contact surface while mating -
- Stable contact resistance during the lifetime -
- Precisely defined contact force -
Wide contact with
smooth contact surface
SPECIFICATIONS AND DRAWINGS ARE SUBJECT TO ALTERATION WITHOUT PRIOR NOTICE - DIMENSIONS IN MILLIMETER
Connectors