Bev,

Refer him to  IPC's component ID desk reference manual DRM-18.
For more definition/explanation of reference designators see ANSI
Y32.16/IEEE std. 200.
For more definition/explanation of component class letters see ANSI
Y32.2/IEEE std 315 section 22.

Thanks,
Kathy Palumbo

-----Original Message-----
From: Bev Christian [mailto:[log in to unmask]]
Sent: Friday, October 29, 1999 7:35 AM
To: [log in to unmask]
Subject: [TN] Standard IPC Component Designated Abbreviations for Test



Dear friends,
I received this e-mail from one of our fellows in France and it is out of my
field of expertise.  Does anyone know which document I should be pointing
him towards?

regards,
Bev Christian
Nortel Networks



1.      DEVICE & NODE NAMING CONVENTION


        In order to facilitate our compatibility drive with the rest of
Nortel, we request that the following device & node naming convention is
adhered to:

        1.1.    Power and only Power signals must start with '+' or '-'.
1.2.    Valid ground names are: 'GND', 'AGND', 'LGND', 'FGND', 'PGND', &
'SGND'.


        If additional ground names are desired please seek agreement from
the Board Test Group.

        1.3.    All ICs and only ICs must begin with either IC or U, e.g
IC2, U6.
1.4.    Node names must not exceed 40 characters in length.
1.5.    The following rules regarding other device names should be adhered
to where possible:

1.      Capacitors should begin with C.
2.      Inductors should begin with L.
3.      Resistors should begin with R.
4.      Resistor packs should begin with RU.
5.      Connectors should begin with either PL or SK.
6.      Transistors should begin with either TR or Q.
7.      Diodes should begin with D.
8.      Diode packs should begin with DU.
9.      Jumpers should begin with J.
10.     Fuses should begin with F.
11.     Switches should begin with SW.
12.     Relays should begin with RLY.
13.     Zeners should begin with ZR.
14.     FETs should begin with FET.
15.     LEDs should begin with LED.
16.     Crystals should begin with XL.
17.     Oscillators should begin with OSC.
18.     Modules should begin with MOD.

 which IPC STANDARD describes that ?.

   Best regards


  stephane ROUSSEL
        NORTEL NETWORKS
       rue des 13 langues
       28200 chateaudun

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