The product manufacturing codes marked on the envelopes of discrete semiconductors and ICs are listed in full in specification SNW-SZ-602. For discrete semiconductors the code is a single upper-case or lower-case letter identifying the centre where the component is manufactured. For ICs the code is a single letter or figure identifying where diffusion and/or assembly and/or final (QA) test is carried out. The following lists give the codes for the most important Manufacturing Centres.
Codes for discrete semiconductors
Code D
Philips Semiconductors, Hamburg, Germany
Code E
Philips Semiconductors, Hazel Grove, UK
Code F
Philips Semiconductors, Stadskanaal, The Netherlands
Code H
Philips Semiconductors, Nijmegen, The Netherlands
Code P
Electronic Devices Ltd. (EDL), Hong Kong
Code W
Philips Semiconductors Guangdong, China
Code m
Philips Semiconductors Philippines Inc., Cabuyao, Philippines
Code t
PSS, Seremban, Malaysia.
Codes for ICs
Diffusion: B
Assembly: -
Responsible Centre: -
San Antonio
Diffusion: C/F/V
Assembly: -
Responsible Centre: C
Albuquerque (fab 4î/6î/8î)
Diffusion: D
Assembly: -
Responsible Centre: D
Hamburg
Diffusion: -
Assembly: -
Responsible Centre: G
Southampton
Diffusion: H/P/T/U
Assembly: -
Responsible Centre: H
Nijmegen (CS/MOS-3/MOS-4/MOS-2)
Diffusion: -
Assembly: -
Responsible Centre: I
Gratkorn, Austria
Diffusion: J/M
Assembly: -
Responsible Centre: J
Caen (fab 5î/6î
Diffusion: -
Assembly: -
Responsible Centre: M
Zurich
Diffusion: -
Assembly: P
Responsible Centre: -
Calamba
Diffusion: -
Assembly: S
Responsible Centre: -
Kaohsiung
Diffusion: Y
Assembly: -
Responsible Centre: -
Shanghai
Diffusion: Z
Assembly: -
Responsible Centre: -
Singapore
Diffusion: 6
Assembly: -
Responsible Centre: -
Limeil
Diffusion: b
Assembly: -
Responsible Centre: -
Boblingen
Diffusion: k
Assembly: -
Responsible Centre: -
Hsin-Chu
Diffusion: -
Assembly: -
Responsible Centre: m
Taipe
Diffusion: -
Assembly: n
Responsible Centre: -
Bangkok
Diffusion: r
Assembly: -
Responsible Centre: r
Sunnyvale
Codes for ICs
As Fig. 1 shows, the top side of an integrated circuit from Philips Semiconductors contains identification marking. This marking normally comprises three lines (A, B, and C) of text and the Philips logo.
Line A contains the commercial type number and optional designations for crystal technology and for package type.
Line B contains the diffusion lot number and a 2-digit assembly sequence number, for traceability to the assembly batch.
Line C contains three code letters designating the diffusion centre, the assembly centre, and the centre of responsibility, followed by the assembly year and week date code (YYWW), the mask layout version and the release status code (blank for released products, X for development samples or Y for qualification samples). For the code letters of the centres see "Product manufacturing codes".
IC marking examples
A typical example of IC marking is:
Line A: 74HL33534D
Line B: K3P08604
Line C: Hnn9322 A X
On very small packages the marking is condensed by truncating the information into two lines.