This 1МД5 (latin 1MD5) is from the series that the document about Zelenograd describes as the 'first series (of) IC in the USSR'. It is a thick-film hybrid integrated circuit in a 12-pin square package. The 1МД5 is shown on www.155la3.ru which displays its circuit of five transistors with common base bias and common emitter connection. I believe it was intended for use in logic gate circuits. The manufacturer is NII TT in Zelenograd, now Angstrem. The series was also made by Exiton in Pavlovsky Posad, Moscow.
I don't have any original data book or sheet for the 1MDn types. If you know where I can find such data, please
The types from this series were renumbered twice, as various Soviet naming standards were developed (see below). Firstly they became the 2ЛБ01n (latin 2LB01n) series. Marsden 1970 lists 2LB011 to 2LB017, and then about 29 higher-numbered 2LBnnn types. Then they were renumbered (again) as the so-called 201 series with part numbers 201ЛБn (latin 201LBn). Devices in both these series can be prefixed with a 'К', which indicates an integrated circuit for commercial and consumer applications (as opposed to military acceptance).
They use an unpainted packaging rather similar to the contemporary IBM SLT ('solid logic technology') hybrids shown here on a card from an unknown IBM device (probably a System/360 component).I am seeking examples of hybrids (not limited to 2ЛБ types) in this outline, if you know where I can find any, please
Angstrem made a second series of hybrids, the 1ММ (latin 1MM) series, in the same outline. www.155la3.ru has pages for 1ММ1, 1ММ2 and 1ММ3. They became 2НТ011 to 2НТ013 and then part of the 201 series. These are assemblies of four n-p-n transistors, differing in their current gain.
Angstrem made another series of hybrids, the 4МД (latin 4MD) series, this time in an unusual 14-wire DIL outline. Rather than pins, they have very thin wires about 1cm long.
As with the 1МДn series, these types were renumbered twice, ending as the 204 series:
- 4МД1 RST flipflop -> 2ТК041 -> 204ТК1 (plus prefix К versions)
- 4МД2 dual NAND/NOR -> 2ЛБ041 -> 204ЛБ1 (plus prefix К versions)
- 4МД3 dual NAND/NOR -> 2ЛБ042 -> 204ЛБ2 (plus prefix К versions)
- 4МД4 'set of elements' -> 2НК041 -> 204НК1 (plus prefix К versions)
- 4МД5 AND gate -> 2ЛИ041 -> 204ЛИ1 (plus prefix К versions) : my image shows a 2ЛИ041 made by Exiton in Pavlovsky Posad, Moscow.
These types were made by a number of manufacturers.
www.155la3.ru reveals that Angstrem made another series of hybrids, the 2МД (latin 2MD) series, which became the 203 series. These use a round outline and seem to be very rare.
The wikipedia article on naming standards implies that from 1968 to 1973 new devices were named according to standard NP0.034.000, for example the 2ЛБ01n series mentioned above. The structure of the name is:
- An optional initial 'К' which indicates an integrated circuit for commercial and consumer applications (as opposed to military acceptance).
- A digit, usually '1' or '2'. The first of those means 'monolithic' and the second 'hybrid'.
- Two letters that denote the functional group of the circuit.
- Three digits that specify the number and variant within the the series.
- An optional letter that denotes the version of the circuit.
For example, 2ЛБ012 is a military-grade hybrid IC, NAND gates or NOR gates, series 01, variant 2.
Turning to Marsden 1970, he lists about 150 monolithic types with part numbers starting with either '1' or 'К1'. Because of the naming standard, it's difficult to know which series was first. Some come in a small flatpack outline like this 1ИР865 (latin 1IR865). It seems to be impossible to find original data for this chip, but data for the renumbered version 186ИР5 shows it is a 90-bit (!) shift register. This one was made by Gamma in Zaporizhia, Ukraine.
There are also examples in a round metal can. This 1УТ401Б (latin 1UT401B) has a 12-pin can rather like TO-101. The functional group УТ contains DC amplifiers and the series 140 contains operational amplifiers that were very long-lived. My example was made by KNIIMP in Kiev, Ukraine.
Later ones use familiar plastic DIL packaging like this К1ЛБ552 (latin K1LB552) dated June 1976. It is a non-military-standard TTL 8-input NAND gate, similar to SN7430, made by Iskra in Ulyanovsk.
According to the wikipedia article a new naming standard came into force in 1973. Most USSR ICs developed after this date have a part number starting with three digits (again, possibly prefixed by 'K'). There are exceptions. These types don't really interest me.
That still leaves it unclear which was the first USSR monolithic IC. We might guess that the first to conform to the 1968 standard would be a logic circuit, and therefore might be 1ЛБ011. However Web searches reveal no such low-numbered types; the lowest-numbered 1ЛБ device in Marsden 1970 is the series 4 type 1ЛБ041 which is a DTL device. Marsden does list some RTL types, which might be presumed to be older, for example 1КП191 and 1ЛБ111.
However, www.155la3.ru contains a document called 'oldtimers'. It has three columns, titled from left to right 'new designation', 'old designation' and 'series'. The middle column contains the part numbers of many early USSR integrated circuits. Perhaps the most interesting is the first: ИП-1 (with multiple suffixes) which became 1КТ011 and is the only member of series 101. A little searching of www.155la3.ru reveals that this was in fact the first USSR monolithic IC (translated version here), made from 1965 onwards.
Obviously I would like to obtain examples of either ИП-1 or 1КТ011. If you can help, please