http://www.deren.com.cn
E-mail: sales@deren.com
Tel:0755-3326000
1
CARD EDGE PRODUCT FAMILY
DDR DIMM
DDR is the acronym used for “Double Data Rate”. The data is
transferred on both the leading and lagging edges of the clock
signals, effectively doubling the rate of data. The required voltage
is gradually reduced in every next generation technology, in order
to deal with increasing power consumption of memory intensive
applications. DDR DIMM Connectors meet JEDEC industial
specification. Support diverse generations of connectors with data
rate transfer up to 6.4GT/s. Modules can not be compatible
between different generations. Modules variations differ by
voltage key and PCB thickness. The voltage key location in
connector housing distinguishes the orientation of module
insertion. Before DDR4, the through hole type of connector is the
mainstream. But situation will be changed after DDR5. The
signaling scalability requires surface mount (SMT) type, not only
to reduce the crosstalk of connector itself, but also to reduce the
crosstalk of transmission lines on motherboard (MB). The housing
bodies of our SMT DDR 4&5 are more narrow than of other
competitors, which means in the high density application fields,
our connectors would have much better thermal efficiency.
Furthermore, in some high reliability application fields, we can
support double contact beam DDR5 connectors.
More narrow housing body design on SMT type connectors to
achieve better thermal efficiency
Narrow latch design provides good air-flow performance
Support diverse latch designs to meet customer different
application fields
Support double contact beam DDR5 for customer high
reliability application.
DDR DIMM product family is offering industrial standard
packaging options, including soft tray and hard tray
FEATURE
Data rate transfer up to 6.4GT/s
Single end signaling with 50Ω nominal impedance
Step and ramp feature on module seating plane
Small ribs design between adjacent pin holes
Auto lock latch design
BENEFIT
Meets JEDEC Spec
Minimizes impedance discontinuities
Lower insertion force
Isolate contacts to prevent electrical short cut
Easy for module installation
TARGET MARKET
Desktop computer
Server
General memory expansion application
Through hole type
SMT type
Standard latch Narrow latch
http://www.deren.com.cn
E-mail: sales@deren.com
Tel:0755-3326000
2
CARD EDGE PRODUCT FAMILY
DDR DIMM
SIGNAL INTEGRITY PERFORMANCE
TECHNICAL INFORMATION
ELECTRICAL PERFORMANCE
Low level contact resistance: 10mΩ initial, △10mΩ
Insulation resistance: 1MΩ min.
Dielectric withstanding voltage: 250VAC.
Current rating: 0.75A/pin De-rate
ENVIRONMENTAL
Flammability: UL 94 V-0
Low halogen: 1000ppm max. Cl, 1000ppm max Br.
Compliant with RoHS directive 2011/65/EU
Operating Temperature: -55°C to + 85°C
SPECIFICATION
JEDEC SPEC:
DDR4 288pin: SO-016 (DIP), SO-018(SMT)
/ MO-309 (Module)
DDR5 288pin: SO-023 / MO-369
DEREN PRODUCT SPEC:
DDR4: DR-PS-0046
DDR5: DR-PS-0115
MECHANICAL PERFORMANCE
Insertion force (module to connector): 106.8N max
Terminal retention force: 300gf min.
Durability: 25cycles.
APPLICATION SPEC
Wave solder peak temperature: Max. 265°C , 10S
Reflow temperature profile:
Recommended SMT stencil thickness: 0.15mm
http://www.deren.com.cn
E-mail: sales@deren.com
Tel:0755-3326000
3
CARD EDGE PRODUCT FAMILY
DDR DIMM
High Temperature Warpage Performance of SMT Type
TECHNICAL INFORMATION
Pass JEDEC high temperature warpage evaluation
(Company D = Deren)
Coplanarity measurement before and after reflow (3 times)