This standard specifies the model naming method of fixed resistors and fixed capacitors for electronic equipment. This standard applies to the model naming of fixed resistors and fixed capacitors for electronic equipment. GB/T 2470-1995 Model naming method of fixed resistors and fixed capacitors for electronic equipment GB/T2470-1995 Standard download decompression password: www.bzxz.net

GB/T2470---1995
This standard is the first revision of GB2470-81 "Nomenclature of resistors and capacitors for electronic equipment". Due to the continuous development of electronic technology, the materials used for fixed resistors and fixed capacitors for electronic equipment are also constantly developing. The original standard is no longer suitable for this change, and it is necessary to revise the original standard. The revisions of this standard to the previous version are as follows: 1. Added 1 scope, 1.1 subject content; 1.2 scope of application. 2. Added examples of product model composition. 3. Added 3 types of ceramic dielectrics in the S row of the capacitor column. 4. Added AC in Table 2, and subdivided the non-sealed and sealed in the organic dielectric capacitor column into two categories: metal foil and metallized.
5. Deleted Table 3. The letter G in the original Table 3 was merged into Table 2. This standard starts from the actual filling and replaces GB2470-81. This standard is proposed by the Ministry of Electronics Industry of the People's Republic of China. This standard is under the jurisdiction of the Standardization Institute of the Ministry of Electronics Industry. The unit of this standard reform: the Standardization Institute of the Ministry of Electronics Industry. The main drafters of this standard are Sha Guang and Liu Kuan. This standard was first issued in July 1981.
1 Scope
National Standard of the People's Republic of China
Type designation system for fixed resistors andfixed capacitors for use In electronic equipment1.1 Subject content
This standard specifies the model designation system for fixed resistors andfixed capacitors for use In electronic equipment. 1.2 Scope of application
GB/T 2470-1995
Replaces GB2470··81
This standard applies to the model designation of fixed resistors and fixed capacitors (hereinafter referred to as products) used in electronic equipment. 2 Product model
The product model consists of the following four parts:
Part 1 Part 2 Part 3
Part 4
Serial number (see 2.4)
Features (see 2.3)
Material (see 2.2)
Main name (see 2.1)
2.1 Part 1
The first part is the main name of the product, represented by letters. The main name of the resistor is represented by R:
The main name of the capacitor is represented by C.
2.2 Part 2
The second part is usually the main material of the product, generally represented by one letter, see Table 1. Table 1 Model Part 2 Material Letter Code Word Code
Resistors
State Administration of Technical Supervision 1995-12-22 Approved crude electrolysis
non-polar organic thin film dielectric
Class 1 ceramic dielectric
1996-08-01 implementation
letter code
resistor
synthetic film
corrugated glaze film
metal film (registration)
inorganic solid
organic solid
ammoniation film
GB/T2470—1995
PEI 1 (complete)
aluminum electrolysis
other material electrolysis
composite Gold electrolysis
Composite medium
Glass glaze medium
Metalized paper medium
Polar organic valve medium
Saw electrolysis
Glass film medium
Paint film medium
Class 3 ceramic medium
Class 2 ceramic medium
Mica paper medium
Mica medium
Paper medium
1) B is used to represent polystyrene film medium. When other film media are used, a letter is added after B to distinguish the specific materials used. The letters to distinguish the specific materials are specified by the relevant specifications. For example, when the medium material is polypropylene film medium, "BB\" is used to represent it. 2) L is used to represent ester film medium. When other film media are used, a letter is added after L to distinguish the specific materials used. The letters to distinguish the specific materials are specified by the relevant specifications. For example, when the medium material is polycarbonate film medium, "LS\" is used to represent it. 2.3 Part 3
The third part is the main features of the product, generally represented by a number or a letter, see Table 2. Table 2 Model Part 3 Characteristic digital or letter code Digital or letter
Resistors
UHF
Ceramic capacitors
Tubular (round)
Multilayer (monolith)
Mica capacitors
Non-sealed
Non-sealed
Organic dielectric capacitors
Non-sealed (metal foil)
Non-phosphorus sealed (metallized)
Sealed (metal foil)
Sealed (metallized)
Electrolytic capacitors
Sintered powder non-solid
Sintered powder solid
Digits or letters
2.4 Part 4
Resistors bZxz.net
Power type
GB/T 2470—1995
Table 2 (end)
Ceramic dielectric capacitors
Pillar type
High power
The fourth part is the serial number, which is generally expressed in numbers. Note
Mica capacitors
Organic dielectric capacitors
1 For products with similar materials and characteristics, only the size and performance indicators are slightly different, but the interchangeability is basically not affected, and the same serial number can be given. Electrolytic capacitors
Non-polar
2 For products with similar materials and characteristics, only the size and performance indicators are different, which obviously affects the interchangeability (but the difference is not essential, but belongs to the problem of unification in technical standards), the same serial number is still given, but a letter is used after the serial number as a distinguishing code. At this time, the letter is used as a component of the model, but when the technical mark of the product is unified, the distinguishing code should be cancelled. 3 Model naming example
3.1RJ71 precision metal film resistor
3.2CCG1 bottle-shaped high-power ceramic capacitor C
3.3CBB10 polypropylene capacitor
GB/T 2470-1995
3.4CA31 non-solid electrolyte sintered molybdenum capacitor C
3.5CA11A molybdenum foil electrolytic capacitor
First serial number
Distinguishing code
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