Difference between revisions of "DEC part number"

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m (Jnc moved page DEC part number to DEC part numbers: Better as plural)
m (→‎External links: Category:DEC Naming/Numbering Schemes added)
 
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'''DEC part numbers''' are generally of the form 'xx-yyyyy-zz' (sometimes the first hyphen is omitted); [[Digital Equipment Corporation|DEC]] had a system for their part numbers, such that looking at a part number will generally tell you (based on the leading two-digit 'xx' field) what ''kind'' of part it is: [[integrated circuit|chip]], cable, etc.
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'''DEC part numbers''' are generally of the form 'ww-xxxxx-yy zzzz' (sometimes the first hyphen is omitted). [[Digital Equipment Corporation|DEC]] had a system for their part numbers, such that looking at a part number will generally tell you (based on the leading two-digit field, the 'class code') what ''kind'' of part it is: [[integrated circuit|chip]], cable, etc. The next field is a 'basic identifier', then comes a 'variation identifier'; the final, optional, field is the 'revision identifier'.
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It should be noted that DEC had several other [[namespace]]s for things produced by the company (such as [[DEC engineering drawing numbers]]; and the identification numbers of [[FLIP CHIP]]s and later component [[printed circuit board|PCBs]], of the form 'Xyyyy', where 'X' is a capital letter, and 'yyyy' are digits), but these numbers are ''not'' 'DEC part numbers', as defined by the applicable DEC specifications (below).
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This table lists the major class codes:
  
 
{| class="wikitable"
 
{| class="wikitable"
 
! Class !! Type
 
! Class !! Type
 
|-
 
|-
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| 19 || Interface chips
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| 10 || [[Capacitor]]s
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|-
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| 11 || [[Diode]]s
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|-
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| 12 || Mechanical and electro-mechanical items ([[connector]]s, [[connector|pins]], bearings, belts, fans, etc)
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|-
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| 13 || [[Resistor]]s
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|-
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| 15 || [[Transistor]]s
 
|-
 
|-
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| 21 || Processing chips ([[Central Processing Unit|CPUs]], etc
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| 16 || [[Transformer]]s and [[inductor]]s
 
|-
 
|-
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| 23 || Programmed chips ([[Read-only memory|ROMs]], etc)
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| 17 || Wire and [[fiber optic]] cables
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|-
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| 18 || [[Crystal]]s and other oscillators                                                                     
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|-
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| 19 || [[Bipolar]] [[integrated circuit]]s
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|-
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| 21 || [[Metal Oxide Semiconductor|MOS]] chips ([[Central Processing Unit|CPUs]], etc)
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|-
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| 23 || Fixed memory chips ([[Read-only memory|ROMs]], etc)
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|-
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| 24 || Fiber-optic components
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|-
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| 30 || [[Core memory]] stacks, major components
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|-
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| 36 || [[Paper tape]], [[punched card]]s, labels
 
|-
 
|-
 
| 50 || [[Printed circuit board]]s
 
| 50 || [[Printed circuit board]]s
 
|-
 
|-
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| 54 || Assemblies
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| 52 || Pulse transformers
 
|-
 
|-
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| 70 || Cables
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| 54 || Assemblies (circuit cards, [[DEC indicator panel|display panels]], etc)
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|-
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| 70 || Cables/[[harness]]es/[[backplane]]s
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|-
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| 74 || 'Manufactured non-electrical parts' (includes decals, etc)
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|-
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| 90 || Fastener hardware (nuts, bolts, screws, washers, ties etc)
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|-
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| 91 || Hook up wire and tubing
 
|}
 
|}
  
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==See also==
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<!-- ==See also==
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-->
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*[[FLIP CHIP]]
 
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==External links==
 
==External links==
  
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* [https://manx-docs.org/collections/antonio/dec/standards/el-00012-00-0000.pdf DEC STD 012-0 Part Identfication Standard]
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* [https://manx-docs.org/collections/antonio/dec/standards/el-00012-02-0000.pdf DEC STD 012-2 Unfied Numbering Code for Part Identifier Class Codes]
 
* [https://how-to.fandom.com/wiki/How_to_identify_computer_chips_or_integrated_circuits_on_circuit_boards How to identify computer chips or integrated circuits on circuit boards]
 
* [https://how-to.fandom.com/wiki/How_to_identify_computer_chips_or_integrated_circuits_on_circuit_boards How to identify computer chips or integrated circuits on circuit boards]
  
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[[Category: DEC Hardware]]
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[[Category: Digital Equipment Corporation]]
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[[Category:DEC Naming/Numbering Schemes]]

Latest revision as of 20:30, 1 October 2024

DEC part numbers are generally of the form 'ww-xxxxx-yy zzzz' (sometimes the first hyphen is omitted). DEC had a system for their part numbers, such that looking at a part number will generally tell you (based on the leading two-digit field, the 'class code') what kind of part it is: chip, cable, etc. The next field is a 'basic identifier', then comes a 'variation identifier'; the final, optional, field is the 'revision identifier'.

It should be noted that DEC had several other namespaces for things produced by the company (such as DEC engineering drawing numbers; and the identification numbers of FLIP CHIPs and later component PCBs, of the form 'Xyyyy', where 'X' is a capital letter, and 'yyyy' are digits), but these numbers are not 'DEC part numbers', as defined by the applicable DEC specifications (below).

This table lists the major class codes:

Class Type
10 Capacitors
11 Diodes
12 Mechanical and electro-mechanical items (connectors, pins, bearings, belts, fans, etc)
13 Resistors
15 Transistors
16 Transformers and inductors
17 Wire and fiber optic cables
18 Crystals and other oscillators
19 Bipolar integrated circuits
21 MOS chips (CPUs, etc)
23 Fixed memory chips (ROMs, etc)
24 Fiber-optic components
30 Core memory stacks, major components
36 Paper tape, punched cards, labels
50 Printed circuit boards
52 Pulse transformers
54 Assemblies (circuit cards, display panels, etc)
70 Cables/harnesses/backplanes
74 'Manufactured non-electrical parts' (includes decals, etc)
90 Fastener hardware (nuts, bolts, screws, washers, ties etc)
91 Hook up wire and tubing

External links

Retrieved from "https://gunkies.org/w/index.php?title=DEC_part_number&oldid=35281"