The FBGA package was designed as a cost-effective CSP solution specifically for high frequency memory devices (ex:DDR II). The structure provides the shortest wire length and outstanding electrical performance for the central-pad device layout through the use of low-cost wire bonding and BGA technologies. Generally, FBGA is defined to have the thickness of 1.2 mm and 1.0 - 0.8 mm ball pitch. ChipMOS offers several packages, including:

Type Packae Size Connections
FBGA 7.5 x 13 mm 96
8 x 11.5 mm 78
8 x 12.5 mm 84
8 x 13 mm 60/84/96
9 x 10.5 mm 78
9 x 13 mm 96
10 x 12.5 mm 60/84
10 x 13 mm 96
10 x 14 mm 78/96
10.5 x 13 mm 60/84
11 x 13 mm 60/84

Structure of FBGA

Applications

The FBGA package is an ideal IC package for devices such as SDRAM, SGRAM, DDR SDRAM, DDR II/III/IV/V SDRAM, RAMBUS DRAM and next generation memory products.

Features

ChipMOS' FBGA packaging provides:

  • Die-down structure
  • Thin core substrate material (BT)
  • Low profile (1.2 mm max. total thickness)
  • Low stress die attach adhesive
  • Ball pitch range from 0.75 to 1.0 mm
  • Customer substrate design available
Reliability
Moisture sensitivity JEDEC Level 3 -
High Temp. Storage Test 150°C 1000 hr.
Temperature Cycling -55°C/125°C 1000 cycles
Pressure Cooker Test 121°C/100% RH/2 atm 168 hr.
Temp. & Humidity Test 85°C/85% RH 1000 hr.
Process Highlights
Wafer Backside grinding Available
Die Thickness 10 ± 0.5 mil
Ball diameter 0.45 mm
Marking Laser
Coplanarity < 4 mil
Ball Inspection Optical
Packing/Shipping Bar code, dry packing

Shipping
JEDEC standard tray

Back