Here I collected all information i have about replacements among western parts to the russian components i use in my constructions. The parts are divided into three tables - bipolar, field-effect transistors and digital IC's. I must apologize for the not complete lists, but the information I have is rather incomprehensive.
| Russian part |
Short description |
Western analog |
| KT3102A | general use n-p-n silicon transistor | BCY43, BC107A, BC170, BC207A, 2N4123, MPS3709 |
|
KT3102E |
npn silicon transistors with high h21e (>600) |
2N5210, for example |
| KT312A-B | general use n-p-n silicon transistor | Almost the same as KT315, excluding case type. |
| KT608A | HF middle-power silicon n-p-n transistor | BSX21, 2SC796 |
| KT606A-B | middle-power silicon n-p-n transistor for use on HF and VHF applications | Couldn't find, sorry |
| KT326 | Common general-use p-n-p silicon device. I guess, any appropriate western transistor will be able to replace it. | I wonder, why i can't find it in my databases... |
| KT602B | rather old n-p-n silicon transistor, specially designed for working in final stages of wideband amplifiers. | BSY71 |
| GT308 | Very old general-use p-n-p germanium transistor. | Can't find, sorry. |
| GT311 | Old, but still good germanium n-p-n device for working with frequencies up to 800 MHz. | Can't find, sorry. |
| KT315 | general use n-p-n silicon transistor, an old design | BC146, |
| GT402 | low-frequency germanium p-n-p transistor, old design | Do not know* |
| GT404 | complementary pair for GT402 | Do not know* |
| MP25A-B | Very old p-n-p transistor for 'draft' purposes | ACY19, ACY23, 2N190-191 |
| KT503A | general use n-p-n silicon transistor (for rather low frequencies) | 2SD762, for example |
| P214A | Very old p-n-p high-power transistor for low frequencies | AD142, for example |
| KT368A-B | Very good high-frequency n-p-n transistor with low noise factor | BFS17 , 2SC252 |
| KT812A | high-power transistor for low frequencies (n-p-n) | KU601, KU602 |
| KT815 | Middle-power n-p-n silicon transistor for use in low-frequency circuits | BD165 |
| KT814 | Complementary pair (p-n-p) for KT815 | BD170 |
| KT818G | High-power p-n-p transistor, widely used in power supplies and output stages of AF amplifiers. | AD142 |
| KT819G | The same as KT 818G, but with n-p-n structure | BDY20, BDY23 |
| KT940A | high-voltage transistor for final stages of video-amplifiers in TV | BF338 |
|
* - I suppose, any general use germanium transistor will work instead. |
|
Russian part |
Short description |
Western analog |
| KP303A | n-channel JFET with rather low amplification | haven't found* |
| KP307B | n-channel JFET, general use | 2N3819 |
| KP302A | the same as above | haven't found* |
| KP303E | the same as above | MPF102 |
| KP350A | two-gate n-channel MOSFET transistor | 2SK39 |
| * Though I haven't found a direct equivalent for this device in my databases, it seems to me,that they are replaceable to 2N3819 and other general-use JFETs (may be, with a slight correction of DC conditions) |
| Russian part |
Short description |
Western analog |
| K544UD1 | General-use operational amplifier with high input impedance | CA740 |
| K155LA3 | four TTL 2&-not elements | SN7400 |
| K155LA12 | the same as LA3, but with more powerful outputs | SN7437 |
| K155IE2 | Asynchronous TTL counter.. Has two counters inside - one counts up to 2, the second - up to 5. They may be used separately or connected in series forming a decade. | SN7490 |
| K155TM2 | Two dynamical TTL triggers of 'D'-type. Also has external 'set' and 'reset' inputs. | SN7474 |
| K155TM7 | Four TTL triggers of 'D'-type. Ideal for using as a 4-bit storage device | SN7475 |
| K155ID6 | A simple 4 -> 10 decoder | SN7442 |
| K514ID2 | 4 -> 7 decoder with blanking input for a 7-segment indicator (LED, for example) | MSD101 |
| K500LP116 | Three differential ECL receivers/amplifiers | MC10116 |
| K500TM131 | Two ECL D-triggers | MC10131 |
Valentin Gvozdev, Moscow
Remarks, Addition:
the KT818 is a silicon-type which can not replaced by a germanium-type. Too many differences, mainly the B-E-threshold-voltage.
Second:
GT402/GT404
these transistors can be easily replaced by AC187/AC188 which are very common
in western europe devices.
(The main difference is the uncommon housing of he russian types.)