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Products > Packages > Outline drawing information >

QFP outline drawing codes


NEC system of QFP outline drawing codes

S 256 GD - 40 - 8EV - 1
(1) (2) (3)   (4)   (5)   (6)

(1) Internal administrative code: Example S (2) Number of terminals: Example 256-PIN (3) Package division code: Example GD (Package size: 28x28mm)
(4) Terminal pitch: Example 40 (0.40mm) (5) Package subcode: Example 8EV (6) Number of revisions: Example 1 (2nd version)


Details of QFP outline drawing codes
Items Actual notation Possible Values/Descriptions
(1) Internal administrative code 1-letter code Internal administrative symbols:P, S, K
(2) Number of terminals 2- to 3-digit number Number of terminals in a package
(3) Package division code G Control code used before fiscal 1986
Division symbols and package size used from fiscal 1987 onward
GA 7x7 mm
GB 10x10 mm
GC 14x14 mm
GD 28x28 mm
GE 7x10 mm
GF 14x20 mm
GH 10x14 mm
GJ 20x20 mm
GK 12x12 mm
GL 40x40 mm
GM 24x24 mm
GN 32x32 mm
GP 36x36 mm
(4) Terminal pitch 2- to 3-digit number Show terminal pitch in units of 10µm. For example:
1.00mm-100
  0.80mm- 80
  0.65mm- 65
  0.50mm- 50
  0.40mm- 40
(5) Package subcode 3-character code 1st character: Package thickness
2nd character: Length of flat section of terminal/forming in alphabet
3rd character: Number of terminals/pitch
(6) Number of revisions 1- to n-digit number
1st version: No description
2nd version onward: 1, 2, 3, ...