Notation systems for semiconductor devices of foreign production. Scheme, description

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Notation systems for semiconductor devices of foreign production. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Reference materials

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At present, three systems of designation of semiconductor devices have developed in world practice: American (JEDEC), European (Pro-Electron), Japanese (JIS). Let's take a look at each of these systems.

JEDEC system

The JEDEC (Joint Electron Device Engineering Council) system gives the following format for designating electronic devices: number - letter - number - suffix.

The number indicates the number of pn junctions in a semiconductor device. If the first digit is 1, then it is a diode; 2 - transistor; 3 (for example) - a field effect transistor with two gates. In any case, the figure indicates the number of device leads minus one.

The letter N does not carry a semantic load, it is simply a separator between two digital designations.

The number does not carry information about the device, it is just the registration number of the device.

The suffix is used when designating transistors: A - low gain transistor, B - medium gain transistor, C - high gain transistor.

For example, 2N3061B is a medium gain transistor.

Pro-Electron System

This system gives the following format: two letters - letter - number - suffix.

The first letter denotes a semiconductor material: A - germanium; B - silicon; C - gallium arsenide; R - composite material.

The second letter indicates the type of device:

A - low power diode or signal;

B - diode with variable capacitance (varicap);

C - low-power low-frequency transistor;

D - low-frequency powerful transistor;

E - tunnel diode;

F - low power high-frequency transistor;

G - various devices;

H - magnetically sensitive diodes;

K - Hall effect devices;

L - high-frequency powerful transistors;

N - optocouplers;

P - photodetectors;

Q - light emitters;

R - switching devices (thyristors, dinistors, unijunction transistors, etc.);

S - low power switching transistors;

T - powerful switching devices (thyristors, triacs, etc.);

U - high power switching transistors;

W - devices on surface acoustic waves;

X - diodes-multipliers (varactors);

Y - rectifier diodes;

Z - zener diodes.

The third letter indicates that the instrument is intended for industrial or military applications (not commercial).

The number does not carry information about the device, it is just the registration number of the device.

The suffix is used when designating transistors:

A is a low gain transistor, B is a medium gain transistor, C is a high gain transistor.

For example, the BFY51B is a silicon low power high frequency transistor for industrial applications with a medium gain.

JIS system (Japanese Industrial Standard - Japanese industrial standard).

This system gives the following format: digit - two letters - number - suffix.

The number matches the designation in the JEDEC code, i.e. This is the number of device leads minus one.

The letters indicate the application of the device:

SA - high-frequency transistor of the pnp structure;

SB - low-frequency transistor of the pnp structure;

SC - high-frequency transistor of npn structure;

SD - low-frequency transistor of npn structure;

SE - diode;

SF - thyristor;

SG - Gann device;

SH - unijunction transistor;

SJ - p-channel field effect transistor;

SK - n-channel field-effect transistor;

SM - triac;

SQ - light emitting diode;

SR - rectifier;

SS - low power (signal) diode;

ST - diodes;

SV - varicaps;

SZ - zener diodes.

The number does not carry information about the device, it is just the registration number of the device.

The suffix can be used by various Japanese firms as they see fit.

For example, 2SC2335C is a pnp high-frequency transistor.

However, many large firms use their own designations for transistors:

MJ - powerful transistors from Motorola in a metal case;

MJE - powerful transistors from Motorola in a plastic case;

MPS - low-power transistors from Motorola in a plastic case;

MRF - high-frequency and superhigh-frequency transistors of Motorola company;

TIP - powerful transistors from Texas Instruments;

TIPL are Texas Instruments high power planar transistors.

See other articles Section Reference materials.

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