Transistors and the use of precious metals in their production. Transistors Transistor kt819gm precious metal content

The transistor is the most common component of electronic technology - the basis of any microcircuit. Only in one processor of a modern laptop, their number exceeds one and a half billion pieces and continues to increase every year. Radio components such as the transistor are the most common of this group.

Historical reference

December 16, 1947 Walter Brattain and John Bardeen made the first model of a point transistor. This date is considered the birthday of the transistor. In 1956, Bardeen, Brattain and Shockley were awarded the Nobel Prize in Physics for this discovery (William Shockley created the theory of the p-n junction and the planar transistor).

The beginning of the use of gold in the transistor falls on the end of 1958, when the alloying of collectors with gold (Jean Erni) began to be used in transistor production technology. It was a breakthrough in transistor technology.

How many precious metals are in transistors

The use of precious metals in transistors is determined solely by technological necessity. With the expansion of knowledge about the physics of metals and the development of new technologies, the proportion of precious metals in transistors is constantly decreasing. The maximum content of precious metals in radio components and in particular in transistors falls on the middle of the 60s and until the end of the 80s of release. So the gold content in some types of transistors can reach up to 2.5%.

All these components are valued at DETALTORG and we always buy radio components from the 60s - 80s, offering a high price for them.

More gold and silver are used in military grade transistors. Distinguishing transistors for general use from the military is simple. For military acceptance, the marking begins with a number, for example: 2T342, 2T912, and the designations for general use, respectively, are KT342 and KT912.

But this statement is not a rule. We can only say that out of the entire list of transistors, one product with military acceptance (marking starts at 1, 2, 3) contains on average about twice as much gold and silver than in a general-purpose product.

You can get accurate data on the content of precious metals in radio components and their price from us at any time - call us, write to us.

Summarizing, we can only say that the content of precious metals in transistors is distributed on average as follows:

We emphasize that these are averaged data and for some series of transistors these values ​​differ significantly from those given, and in some series there are practically no precious metals. For example, in KT315, KT316 the gold content per 1000 pcs. is 0.07 g, and in KT966 gold 29.11 and silver 58.03 g.

The table shows the content of precious metals in transistors, the value of gold in which is higher than 50 g per 1000 pieces.

It is rather difficult to understand the whole variety of components, and even more so to determine their real cost. The purchase of radio components for our company is part of our professional activity and therefore DETALTORG can be trusted.

Call or write to us - we will answer any of your questions. Our prices are always favorable.

This page contains a List of radio components and products with a photo catalog that we buy on an ongoing basis and in any condition, new and used. On our site all photos of radio components are copyrighted (a lot of time was spent on their creation, while our competitors were just making money) and are not copied from free sources on the Internet, like some bureau sites for buying radio scrap at a reduced price, widely advertising themselves as "large and respectable", but not wanting to take "some kind of photo of radio elements" and exposing super-mega unrealistic prices higher than the London Stock Exchange by 30-100% for stolen photo parts.

Below the photo catalog is "", where information is given for each series of radio components, that is, what value these radio components represent.

Explanation to the List of radio components containing precious metals

It should be noted that this list is far from exhaustive. We are trying to add new purchased items to the list, which is reflected in our catalog with photos and prices for expensive Soviet and imported radio components in the relevant sections of the site.

You can sell valuable USSR radio components for radiology, new and used, containing precious metals at competitive prices for today by contacting. For more than 6 years we have been cooperating with private individuals, reliably. The exact cost of Soviet radio components depends on the quantitative content of precious metals in them, the year of manufacture, acceptance conditions (military or civilian acceptance) and the manufacturer.

It also buys modern radio components of imported and domestic production: capacitors, microcircuits, transistors, connectors, relays and other electronic components.

Capacitors

• Monolithic ceramic capacitors of the following series: KM3, KM4, KM5, + KM6, K10-17, K10-26, K10-48.
• Capacitors in a plastic case: K10-17, K10-23, K10-28, K10-43, K10-46, K10-47.
• Capacitors KM5 of the H30 group of green color are capacitors on which "H30" is clearly written.
• We buy Soviet packageless capacitors of all sizes, do not mix imports, you can immediately see.
• Imported packaged capacitors are currently not accepted.
• Capacitors are imported, of certain brands (see the photo catalog).
• Tantalum capacitors of the following series: K52-9, ET, ETN, K53-1, K53-7, K53-16, K53-18, K53-28.
• Capacitors K50-6, K50-12, K53-4, K53-14, K53-21, K71-7, K73p-2, K73-3, K73-9, K78-2 and the like are not suitable, we do not buy these.
• Silver-tantalum capacitors: K52-1, K52-2, K52-5, K52-7, IT-1, IT-2.
• Capacitive assemblies B-18, B-20, in-line filters B-23, MLZ delay lines, micromodules, GIS.

Generator lamps of the GI, GMI, GS, GU series

• GS-23B, GS-36B, GI-19B, GMI-2B, GMI-4B, GMI-5, GMI-6, GMI-6-1, GMI-7, GMI-7-1, GMI-10, GMI- 11, GMI-14B, GMI-19B, GMI-21-1, GMI-24B, GMI-26B, GMI-27A, GMI-27B, GMI-32B, GMI-32B1, GMI-38, GMI-42B, GMI- 83V, GMI-89, GMI-90
• GU-19-1, GU-29, GU-34B, GU-34B1, GU-43A, GU-43B, GU-50, GU-70B, GU-71, GU-72, GU-73B, GU-73P, GU-74B, GU-78B, GU-84B
• GKD1-600/5, TGI1-2500/50, TGI1-2000/35, LI-604 K-1, LI-705, LI-702-1, LI-703, 5 MHz resonator, K3 quartz, RR-7 arrester, Klystron K-12, Klystron K-351, Klystron K-352
• We buy generator lamps until 01.1991 of release. The price of lamps is affected by the presence of the "rhombus" sign and a number of other factors.
• We do not buy radio tubes from USSR TVs without packaging and used radio tubes. More details on the page "".

Microcircuits

• Microcircuits of Soviet and foreign production in round, ceramic, planar, DIP, cases of certain series.
• Microcircuits in a plastic housing of domestic production 155 series and the like.
• We are currently buying Soviet microcircuits of the 580 series in a black "large" plastic case, with white leads. Price up to 500 rubles/kg
• We do not buy microcircuits in a ceramic case with nickel-plated terminals (legs), later we will buy them as nickel scrap.

transistors

• Transistors in round, flat, metal, plastic cases, power transistors.
• Imported transistors with a yellow bottom and leads, with a white bottom and internal gold plating.
• Transistors of the MP12, MP40, KT805, KT903, P416 series and the like are not suitable.

Indicators, LEDs, diodes containing precious metals.

• ALS(3LS)321, ALS324, ALS333, ALS0338, 2D908 and the like, as well as LEDs with yellow leads, light filters.

Connectors

• Connectors of domestic production of all series only with yellow contacts!
• Domestic-made connectors in plastic cases do not need to be disassembled, since the connector case is marked and the year of manufacture. This directly affects the price of connectors.
• Contacts (ligature) from domestic connectors with a yellow coating of contact parts, including from connectors of round section 2RM, ShR, SNC, ONC and similar in aluminum cases.
• All connectors with silver-plated (white) contacts must be disassembled into a ligature; in general, we do not buy these connectors. The ligature is the contacts removed from the connector housing.
• Imported connectors of certain brands with all-yellow contacts.
• We do not buy connectors from motherboards and similar connectors as a whole, we do not buy them, it is necessary to disassemble them into contacts (ligature).
• Lamellas of yellow and gray (steel) color from boards of domestic and foreign production.
• Silver-plated slats are not suitable for sale. Silver-plated lamellas, as a rule, are also partially covered with a black coating (oxide).
• For additional information on these radio components, see the page "".

Switches, toggle switches, buttons

• PG2, PG5, PG7, PR1, PR2, PM2-1, PkP2-1, PKN4-1, P2KnTA, PK1S, PK1E, PK2S, P1T3-1V, P1T4-1V, P1M9-1V, P1M11-1, P1M12-1, PT 2-40, PT 3-40V, PT 33; 55, PKn-2.4-1V, PM2-1V, PKn-4-1V, PT 8-1V, 3V, PT 8-1V, 3V, PT 8-1V, 3V, PT 8-1V, 3V, PT9- 1, PT11-1, PT13-1, PT23-1, PT25-1, PT27-1, MP-12, P1T-1-1, P2T-1-1V, P2T-1,7,14T,19, P2T- 1,7,14T,19, P2T-1,7,14T,19, OSP2T-1,2,7, PKn-8-1V, PKn-8-2V, PKn-8-3V, PKn-8-4V, PKN-19-1V, PKN-105-1V, PKN-107-8V, PKN-115-1V, PKN-125, PKN-150-1, P2Kn-1V,3V and P2KnTA-1,2,3,4V, P2Kn-1V,3V, P2KnTA-1,2,3,4V, P2Kn-1V,3V, P2KnTA-1,2,3,4V, P2KnT3V,T4V, P2KnT1,3,4V, P3PN-20, PP6, PP8, PP9, PP11, PPK-2-20, TV1-2, TV1-4, VBT, VDM, Shiv-25/4, Shiv-50/4.
• The listed switches and buttons are suitable up to a certain month and year of manufacture. Certain series of switches were made with white and yellow terminals, only suitable with yellow terminals. With white conclusions - analysis is needed.
• We do not buy switches of the MT series, certain MP series and similar ones in their entirety, they must be disassembled into silver-plated parts.
• Other switches require analysis.

Resistors variable

• SP5-1, SP5-2, SP5-3, SP5-4, SP5-14, SP5-15, SP5-16, SP5-17, SP5-18, SP5-20, SP5-21, SP5-22, SP5- 24, SP5-37, SP5-39, SP5-44.
• SP3-19, SP3-37, SP3-39, SP3-44.
• PP3-40, PP3-41, PP3-43, PP3-44, PP3-45, PP3-47.
• We buy the listed series of resistors, except for PP3-40 and the like, until 1990, after which a suitability check is necessary, since not all are suitable.
• Resistors SP3-39 must be disassembled, we buy with a steel-colored slider. They don’t fit with a copper slider, we don’t buy these.
• We do not buy all other resistors with markings that start with SP3-0, SP3-3, and so on.
• Resistors PP3-40, PP3-43 and the like are suitable until 03.92, after this date a check is necessary, many are not suitable.
• We do not currently buy MLT, OMLT and the like resistors.

Potentiometers

• PPML-M, PPML-I, PPML-IM, PPML-F, PPMF-M, PPBL-V, RPP, PTP-1, PTP-2, PTP-5, PLP-1, PLP-2.
• Some potentiometers are not suitable for sale, since the wire inside is found in nichrome or manganin.

Relay

Domestic and imported production containing precious metals.

• RES7, RES8, RES9, RES10, RES14, RES15, RES22, RES32, RES34, RES37, RES48, RES78.
• RP3, RP4, RP5, RP7, RPS3, RPS4, RPS5, RPS7, RPS11, RPS15, RPS18, RPS20, RPS24, RPS32, RPS34, RPS36.
• DP12, RKN, RKNM, RKM-1, RKM-1T, RKM-P, REK43, REN-33, TRA, TRV, TRL, TRM, TRN, TRP, TRT, RTN, TRSM-1, TRSM-2, RVMU- 1, RKP E-506, SK-594, RV-5A, RTS-5.
• The listed relays are not suitable for all, but only with certain passports and up to a certain month and year of manufacture.
• Relays RES-6, RES-22, RES-32 with white contacts are generally not suitable for sale, remove the aluminum case (cover) and check the color of the contacts. If white, then cut off the contacts.
• Relay RES-22, RES-32 as a whole we buy only with yellow contacts. There is no need to cut the contacts, send or bring the relay with whole cases, as there is a marking on the case. And this, in turn, directly affects the price of the relay.
• Relay RES-9 with passports 00 01 and 200 cost 2 rubles / unit.
• For the RES-10 relay, external terminals (legs) must be retained during dismantling. Without conclusions, this relay is much cheaper.
• Relays RES-47, RES-49, RES-60 as a whole are bought by weight, sending by Russian Post is not particularly cost-effective. It is possible to disassemble these relays into yellow plate contacts and send them in this form. The price in this case will be high.

Printed circuit boards with radio components suitable for scrap

• We do not buy all the cutting from the boards in a row, only suitable radio components.
• Boards with only 155 series microcircuits (black plastic, white leads) are not particularly cost-effective to send via Russian Post. If these boards are few (up to 10 units), then send them along with other radio components, we will consider it.
• When with suitable radio components, remove unnecessary heavy parts, such as transformers, capacitors K50-6, K50-12 and other radio components that are not suitable for sale for scrap.

The company "Astrea-Radiodetali" buys transistors at the best prices in Moscow and the Moscow region. We cooperate with the regions of the Russian Federation through the services "". You can also send a large volume of radio components by the transport company "Business Lines".

Also, our imported gold-plated transistors of various series for more than 6 years from individuals, reliable and safe. The price for large batches of radio components is always higher by 5-7%, and in some cases we are ready to buy your radio components 10% more expensive than competitors, calculation immediately after the transaction. When working with regular customers, the accumulative system "Bonus +3" operates.

We buy on an ongoing basis the following transistors:

• In round, flat, metal, plastic cases, power transistors.
• New, used and after dismantling.
• Domestic and imported production.

We will also buy other radio components in any condition that contain precious metals. The calculation of the price for purchased transistors is made in exact dependence on the content of precious metals in transistors, marking, year of issue and depends on the London Stock Exchange rate. All the contents of precious metals in various transistors have been studied for a long time, so our specialists can easily accurately calculate the cost using digital markings, which are located on the body of the part.