This industry standard covers the general requirements forcermet or metal film type resistor networks, primarily intended forincorporation into electronic circuits.
Classification
Networks specified herein (see 3.1) shall be identified by apart number which shall consist of the basic style and a dashnumber. Each article sheet covers a different network style. Thedash number shall be coded to provide information concerning thenetwork characteristic, resistance value, resistance tolerance andschematic.
Style
The style is identified by the three-letter symbol “RZS”followed by a three-digit Number.
Characteristic
The resistive Characteristic is identified by the single letterH, K or M.
Resistance
Equal Resistors – When all resistance values in the network areidentical, the nominal resistance expressed in ohms is identifiedby four digits. Standard values are shown in Table II. The firstthree digits represent significant figures and the last digitspecifies the number of zeros to follow. When the value ofresistance is less than 100 ohm, or when the fractional values ofan ohm are required, the letter “R” should be substituted for oneof the significant digits to represent the decimal pint. When theletter “R” is used, succeeding digits of the group representsignificant figures. The resistance value designations are shown inTables II and III. Minimum and maximum resistance values for eachstyle shall be as specified (see 3.1).
Unequal Resistors – When the resistance value within the networkvaries, then four digits should be used with the first digit beingan “A,” and the following three digits a code number indicating aresistance combination described in the applicable detail articlesheet.
- Edition:
- 87
- Published:
- 01/01/1987
- Number of Pages:
- 36
- File Size:
- 0 files
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