What standard is gold in Radio Components?

Gold is used when it is necessary to minimize the risk of sparks and even the slightest corrosion. Here are the main forms of using gold in radio components and devices: Use of gold foil. Installation of gold coatings - sputtering, galvanic gilding. The gold used in radio components was 999 samples (99.9%), and the thickness of their deposition on radio components is extremely small and is measured in microns. Of course, there are a number of radio components where they are found in their pure form, but there are so few of them; examples of such parts are a number of: relays, generator tubes, triodes and klystrons.

How much does 1 gram of gold cost in a jewelry store?

Prices in pawn shops

Company	Price per gram 585 samples	Gold price per 1 gram 999 standard
Alpha metal	1363 rub.	2351 rub.
Region gold	1360 rub.	2330 rub.
Vardogold	1230 rub.	2150 rub.
Advisor	1500 rub.	2500 rub.

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Method for extracting gold metal from memory cards

The precious metal is often mined at home from memory cards and motherboards. In this case, gold refining is carried out in the following sequence:

The number of different precious metals, including gold, in a mobile phone

The material is prepared - the gold-plated contacts are cut off (should be about 0.5 kg).
4 parts of hydrochloric acid are combined with 1 part of hydrogen peroxide.
Place the material in a glass container and fill it with solution.
Leave it to separate the gilding, which completely settles to the bottom after 24 hours.
After another 48 hours, the solution is drained, filtered, and dissolved in aqua regia.
A mixture of sodium pyrosulfite and distilled water is used to precipitate gold particles.
The resulting precipitate is fused in a crucible using a burner (you should get a piece weighing approximately 2.9 gm).

Microcircuits

The use of gold in microcircuits is due to the high electrical conductivity of this metal. Its use makes it possible to achieve miniature sizes and reliability of contacts, soldering and other types of connections.

Precious metal in microcircuits is necessary to create corrosion-resistant, thin, low-resistance conductive lines.

Modern technologies make it possible to create such elements in the form of the thinnest coatings. The percentage of gold in microcircuits is low, but working with large quantities of such raw materials becomes cost-effective and profitable.

The table below shows which microcircuits contain gold (grades in which it is used) and how much it is.

Chip brand	Gold content in milligrams
KR531KP12	0.55
1109KT5	25.54
KR1005ХА4	0.80
K1108PA15	35.25
K101KT1V	17.97

Instruments and equipment

Gold is used in precision equipment, especially in older models .

Here are some examples of devices and instruments powered by electricity, indicating the amount of precious metal:

Type or model of equipment or device	Estimated amount of recoverable gold in grams
Oscilloscope C 9 - 1	3,439
Programmer 815	21,4845
Milliohmmeter E 6-18/1	0,333
Frequency meter ChZ-68	8,1
Generator G 2-59	11,09334

Precious metal in devices is most often used for coatings, but parts made from this metal are also found.

Disposing of devices after repeated use is a profitable activity.

Collection and operations with radio components

When doing recycling, you don’t have to perform the full cycle of work:

Collection of raw materials.
Sorting and primary processing.
Gold recovery and refining.
Melting and sale of ingots.

Cooperation with a specialized company makes it possible to limit yourself to those works that conditions allow. Many individual enthusiasts limit themselves only to collecting and sorting radio components.

Here are several channels for searching and collecting such raw materials:

collection from ownerless abandoned industrial and other facilities;
collection from the population.

The photo above shows some parts containing gold, and the table shows a list of them with some average prices for them in Russia:

Type of radio components	Cost per unit of weight or quantity, rub.
Microcircuit 153UD1 new	RUB 36.1 each
Microcircuit 153UD1 used	RUR 25.05 per piece
New M85 chip	129.52 rubles per piece
Microcircuit M85 used	111.36 rubles per piece
Transistors KT301, 306, 312, 316 new	RUR 26.90 per piece
Transistors KT301, 306, 312, 316 used	18.00 RUR per piece
Transistors KT930, 958, 960, 970 new	90.67 rub. per piece
Transistors KT930, 958, 960, 970 used	74.96 RUR per piece
Lamp GS-36B	196.47 rubles per piece
Lamp GMI-29B-1	RUB 7,841.04 per piece

Gold is found not only in radio components. Read about where else you can find it here.

List of radio equipment and gold-containing elements installed before 1985-1986

Soviet electronics produced before 1985-1986 deserve special attention. Such devices contain the maximum amount of precious metal, so there is no need to rush to part with old equipment from the USSR era.

Many devices, such as televisions, tape recorders, radios, contain gold “filling”.

RB-3 Radio components
The list of gold-containing parts of radio equipment will be as follows:

Transistors. A large content of precious metal is found in the KT101, KT103, KT117, KT603, KT613 series, its main concentration is under the crystal or on the legs.
Connectors. They are covered with the thinnest layers of solar metal.
Radio tubes. The models GMI-11, 12P17L, 6V1P are especially different. Radio tubes, in addition to gold, may contain platinum, silver, tantalum, and palladium.
Semiconductors. A little precious metal is contained in diodes, light-emitting diodes, and zener diodes.
Capacitors. They contain the largest volume of solar metal.
Wrist watch. The body of the product was sometimes covered with gold.
Computer parts. Gold-containing parts can be part of processors, connectors, etc.

The older the Soviet product, the more valuable materials may be inside. The metal used in radio components is 999 fine. The thickness of gold surfacing on radio components is extremely small and is measured in microns.

Transistors

From one Soviet-made transistor you can extract significantly less gold than is in one relay. But in terms of the percentage of precious metal, the comparison will not be in favor of the switches: in some transistors up to 2% of the mass is gold.

In addition, transistors have another advantage: unlike relays, they can be found in ordinary household appliances and in fairly large quantities.

A transistor can have 3 areas covered with gold:

Contact terminals (“legs” for conventional transistors and “wings”, “blades”, “plates” or “bolt” for power brands).
External area under the crystal (“belly”).
Internal area under the crystal (visible after cutting the case).

To determine which radio components contain gold, simply inspect the indicated areas and, if they are yellow, feel free to hand them over to the buyer. An error is extremely unlikely, since the gold plating is immediately visible.

If we talk about specific brands, then the following transistors definitely have gold plating:

KT-201, KT-203, KP-201, KP-203, KT-301, KT-306, KT-312, KT-316, KU-104G, KP-302, KT-325, KT-618, 2T- 618, KPS-104G, AOT-110, GT-311, KT-601, KT-603, KT-605, KT-608, KT-505, KT-630, KT-830, KT-831 and similar with long and short golden leads;
P-307, P-308, P-309, KT-607B, KT-602, KT-604, 2T-602, 2T-604 and the like, visually without gold plating;
KT-610, KT-613, KT-913, 2P-907, KT-920, KT-922, 2T-920, 2T-922, KT-951, 2T-951, KT-957, 2T-957, KT- 911, 2T-911 and similar “helicopters” with gold blades;
KT-606, KT-902, KT-921, KP-901, KT-904, KT-907 and similar gold “bolts”;
KT-948, 2T-948, KT-965, 2T-965, KT-866, 2T-866, KT-9105, 2T-9105, 2T-930, 2T-958, 2T-960, 2T-970, M- 45304 and similar ones with gold-plated cases;
2T-704, 2T-912, 2T-926, KT-704, KT-912, KT-926, KT-944, KT-947, 2P-904, visually without gold plating, issued before 12.1991.

Given the high percentage of gold content, the listed transistors are purchased by refining companies from 8 to 150 rubles per piece.

New and well-preserved transistors with gold-plated terminals or housings are best sold as electronic components rather than for precious metal recovery.

Useful recommendations in the field of purchasing and selling radio components

We have described how gold can be extracted from radio components, but in addition to the above methods, there are quite a few methods for making a profit in this industry. One of the simplest ways is to sell or buy up equipment containing precious metals. However, even in this area it is necessary to be extremely careful in order to avoid troubles with the law, as well as to avoid bankruptcy.

With the right skills, such a business can be put on stream and it will be quite profitable.

So, if you plan to purchase devices and equipment from the population that contain impurities of precious metals, advertisements should be written as follows; “I’ll buy radio components. Phone XXXXXXX . What's the catch? You should not indicate exactly what kind of radio components you are going to purchase (meaning, those containing precious metals). It will be very useful to notify your loved ones, friends and acquaintances that you are interested in equipment of this kind; it is a good idea to negotiate with local collection points for non-ferrous metals (it will be very good if they agree to advertise a higher price for radio components). You must act extremely carefully, otherwise you can get yourself into trouble.

Already finished gold (extracted from radio components) should be sold in accordance with current legislation. Here it is advisable to establish business relationships with one or two buyers. Even better is to sell the extracted precious metal through jewelry stores.

Gold can be melted into small bars of a standard weight, but it is much more convenient to melt it into jewelry (rings, bracelets, chains or earrings).

But for this you will have to buy a special burner or assemble a portable electrolysis unit yourself.

To avoid trouble, precious metals must be sold in accordance with current legislation.

How to buy the reagents necessary to remove gold from radio components? To do this, you just need to contact a specialized store. You can also negotiate with nearby chemical industry enterprises. Don’t forget about the possibilities of the global network - the Internet is full of stores that specialize in selling goods designed for extracting gold from radio components.