DDR Interposers

Interposers Available from Astek

The following Probe Interposers are available for purchase from Astek and sold to customers by Keysight’s Application Engineering Organization (AEO). Select a memory type below for datasheets, user guides, and correction files.

Memory  Type	BGA Balls	Speed (MT/s)	Pitch (mm)	Memory Channels	Scope	Logic	Riser
DDR5	78	4800	0.8	1×8	√	√	√
DDR5	102		0.8	1 X 16	√	√	√
LPDDR5	315		0.8	2 X 32	√	√	√
LPDDR5	496		0.4	4 X 16	√		√
GDDR5	170		0.8	1×32	√
LPDDR4	200	1833	0.65 / 0.8	2×16	√		√
LPDDR4	200	2400	0.65 / 0.8	2×16		√	√
LPDDR4	295	1600/ 2100	0.4	2×16	*	*	*
LPDDR4	366	1600/ 2100	0.4	4×16	*	*	*
LPDDR4	366	1600/ 2400	0.5	4×16	√	√	*
LPDDR2	121		0.5	1×16	√	√
LPDDR2	134	1066	0.65	1×16 / 1×32	√	√	√
LPDDR2/3	168	1066	0.5	1×32	√	√	√
eMMC	153/169	400	0.5	N/A		√	√
ONFI	316		0.8	4×8		√

* Contact Astek Corp

Download a Selection Guide for off-line use.

Download a Rigid Interposer Soldering Guideline and Flex-Wing Interposer Guidelines for off-line use.

Download a Digital BGA Interposer Catalog for off-line use.

Interposers on the Keysight CPL

The following Probe Interposers are available on the Keysight CPL and are purchased directly from Keysight.

Memory  Type		BGA Balls	Speed (MT/s)	Pitch (mm)	Memory Channels	Scope	Logic	Riser
eDDR3		96	2400	0.8	1×16	Link!	Link!
eDDR3					4×8		Link!
DDR4		78	3200	0.8	1×4 / 1×8	Link!	Link!	Link!
DDR4		96	3200	0.8	1×16	Link!	Link!	Link!
eDDR4		96	2400	0.8	1×16		Link!
LPDDR3		178	1600	0.8×0.65	1×32
LPDDR4		200	1833	0.8×0.65	2×16

Customized interposers are also available for LPDDR2, LPDDR3, and LPDDR4 technologies. For more information on customized interposers, please contact Astek (orders@astekcorp.com ) or  Chuck Small (csmall@astekcorp.com) for inquiries.

– Custom Interposer Questionnaire

– 2nd Generation Interposer Load Model

The following equipment complements the use of Interposers

Part Number	Description
U4154-66410	Analog Adapter for Nemo Logic Analyzers. Allows scope probing of signals on a Nemo cable.