Thermistor model composition

Thermistors produced in China are modeled according to the ministerial standard SJ1155-82, which consists of four parts.
The first part: the main name, with the letter 'M' representing the sensitive element.
The second part: the category, with the letter 'Z' representing a positive temperature coefficient thermistor, or the letter 'F' representing a negative temperature coefficient thermistor.
The third part: the purpose or characteristics, represented by a single digit (0-9). Generally, the number
'1' indicates general use;
'2' indicates voltage stabilization use (negative temperature coefficient thermistor);
'3' indicates microwave measurement use (negative temperature coefficient thermistor);
'4' indicates indirect heating type (negative temperature coefficient thermistor);
'5' indicates temperature measurement use;
'6' indicates temperature control use;
'7' indicates demagnetization use (positive temperature coefficient thermistor);
'8' indicates linear type (negative temperature coefficient thermistor);
'9' indicates constant temperature type (positive temperature coefficient thermistor;
'0' indicates special type (negative temperature coefficient thermistor). The
fourth part: serial number, also represented by numbers, represents specifications and performance.
Often, manufacturers add a 'derived serial number' after the serial number to distinguish the special needs of this series of products, which is composed of letters, numbers and '-'.
Example: MZ 1 1
serial number general use positive temperature coefficient thermistor sensitive element