
6
70 Insulated mounting boards
71 -
72 Master bill of material
73 Engineering data sheets
74 -
75 Reworked or exchanged assemblies
The middle six digits describe a basic type of part, such
as physical or electrical characteristics of a group or
family of parts. As an example, a resistor family of 1/2
watt carbon resistors have the number 000045. The part
number of one specific resistor in this family is a 54-
000045-0102.
The last four digits describe a specific part within the
family and may be assigned in numerical sequence or
may describe the specific part value. The following table
lists those part categories where the last four digits have
a significant meaning to the technician.
Category
Part Name
Parameter Described
23
Capacitor
Capacitance
32
Fuses
Ampere rating
49
Potentiometer Resistance
54
Resistors
Resistance
55
Power diodes Peak reverse voltage
and SCR’s
Last 4 digits
Numeric Value
2593
.025
2592
.25
2591
2.5
0250
25.
0251
250.
0252
2500.
0253
25000.
Summary of Contents for CES
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