This standard specifies the detailed requirements for MF11 type negative temperature coefficient thermistors, with a resistance ratio of A and B, only S type for lead terminals, resistance temperature characteristic error levels of F, G, J and K, and a temperature range of -55 to 125°C. SJ 20047-1992 Detailed Specification for MF11 Type Negative Temperature Coefficient Thermistors SJ20047-1992 Standard download decompression password: www.bzxz.net
This standard specifies the detailed requirements for MF11 type negative temperature coefficient thermistors, with a resistance ratio of A and B, only S type for lead terminals, resistance temperature characteristic error levels of F, G, J and K, and a temperature range of -55 to 125°C.

GJB 601-1988 General Specification for Thermistors
GB 2471-1981 Nominal resistance series of fixed resistors and nominal capacitance series of fixed capacitors for electronic equipment and their allowable deviation series

Military standard for the electronics industry of the People's Republic of China FL5911
SJ20047—92
MF11 type negative temperature coefficient thermistor
Detail specification
Detail specification for MF11 directly heated negatice temperature
coefficientthermistor
Published on February 1, 1992
China Electronics Industry Corporation
Implementation on May 1, 1992
1 Scope
Military standard for the electronics industry of the People's Republic of China MF11 type negative temperature coefficient thermistor
Detail specification
Detail specificationfor MF11 directly heated negatice temperature
coefficient thermistor
SJ20047-92
1.1 This standard specifies the detailed requirements for MF11 type negative temperature coefficient thermistor, with resistance ratio of A and B, only S type for lead terminals, resistance temperature characteristic error levels of F, G, J and K, and a temperature range of -55125℃. Reference documents
GJB601-88
GB2471—81
and its allowable deviation series.
3 Requirements
General specification for thermistors
The nominal resistance series of fixed resistors and the nominal capacitance series of fixed capacitors for electronic equipment 3.1 shall comply with the provisions of GJB601 and this specification. 3.2 Design and structure The design structure and dimensions of the thermistor shall comply with the provisions of Figure 1. +6.5ma
China Electronics Industry Corporation 1992-02-01 released Figure 1
0.5±0.07
1992-05-01 implemented
SJ20047—92
3.3 Time constant The maximum time constant should be 30s3.4 Dissipation constant The minimum dissipation constant should be 5mW/℃. 3.5 Rated power
The maximum power of thermistor at 25℃ is 0.5W, and its load reduction characteristics should comply with Figure 2. Pmax%
3.6 Resistance
3.6.1 Zero power resistance value at 25℃
The series of zero power resistance values ​​at 25℃ should comply with the provisions of GB2471. 125
Table 1 R25 for each resistance ratio
Resistance ratio A
220~6800
Resistance ratio B
36015000
3.6.2 The temperature characteristics of resistance shall comply with the provisions of Table 2. The resistance value at a temperature other than 25℃ in the relevant resistance ratio shall be determined by multiplying the factor given in Table 2 by the zero-power resistance value at 25℃. Table 2 Temperature characteristics of resistance Factor
Temperature℃
3.7 Short-term load
Resistance ratio A
Maximum allowable change in zero-power resistance value after short-term load test3.8 Low-temperature storage
Maximum allowable change in zero-power resistance value after low-temperature storage3.9 High-temperature storage
Maximum allowable change in zero-power resistance value after high-temperature storage3.10 Terminal strength
±2%.
±2%.
±1%.
Resistance ratio B
SJ20047—92
After applying a 10N pulling force directly to the lead end, the thermistor should have no mechanical damage, and the maximum allowable change of zero-power resistance value is ±1%.
3.11 Temperature shock
After temperature shock, the maximum allowable change of zero-power resistance value3.12 Resistance to welding heat
After the resistance to welding heat test, the maximum allowable change of zero-power resistance value is ±2%.
±1%.
3.13 Moisture resistance
After the test at 40℃ relative humidity (95±3)%, the maximum allowable change of zero-power resistance value3.14 Load life
After the load life test, the maximum allowable change of zero-power resistance value3.15 High temperature exposure
After the high temperature exposure test, the maximum allowable change of zero-power resistance value: 100 hours is
1000 hours is
3.16 High frequency vibration
±1%;
±2%.
After the high frequency vibration test, the maximum allowable change of zero-power resistance value3.17 Impact
After the impact test, the maximum allowable change of zero-power resistance value3.18 Immersion
After the immersion test, the maximum allowable change of zero-power resistance value4 Quality assurance regulations
4.1 Sampling and inspection shall comply with the provisions of Chapter 4 of GJB601. 5 Delivery preparation
5.1 Delivery preparation shall comply with the provisions of Chapter 5 of GJB601. 6 Notes
6.1 It shall comply with the provisions of Chapter 6 of GJB601. Additional notes:
This standard was proposed by the Military Industry Department of the Ministry of Machinery and Electronics Industry. This standard is under the jurisdiction of the China Electronics Technology Standardization Institute. This standard was drafted by the 715 Factory.
Participating drafters: Zhang Changren, Wang Pengcheng. Project code: B01028.
±5%. www.bzxz.net
±2%.
±2%.
±3%.
±5%.
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