This standard specifies the detailed requirements for MZ11A positive temperature coefficient thermistors. This specification applies to MZ11A thermistors with a resistance ratio of 10 and an allowable error of ±20%. The resistor is mainly used for temperature compensation in DC or low-frequency circuits. The lead wire is S-type SJ 20276-1993 MZ11A positive temperature coefficient thermistor detailed specification SJ20276-1993 Standard download decompression password: www.bzxz.net

Military standard for electronic industry of the People's Republic of China SJ20276-93
MZ11A type
Detail specification for positive tempratureCoefficient therrmistors STYLE MZiiA1993-05-11 issued
1993-07-01 implemented
The Ministry of Machinery and Electronics Industry of the People's Republic of China issued the military standard for electronic industry of the People's Republic of China MZ11A type positive temperature coefficient thermistor
Detail specification
Detail specification for positive tempraturecoefficient therrmistors STYLE MZ11A1 Scope
1.1 Contents
This standard specifies the detailed requirements for MZ.1IA type positive temperature coefficient thermistor. 1.2 Scope of application
SJ 20276—93
This specification applies to MZ11A type thermistors with a resistance ratio of 10 and an allowable error of ±20%. The resistor is mainly used for temperature compensation in DC or low-frequency circuits, and the lead wire is S-type. 1.3 Classification
1.3.1 Model Specifications
The model specifications of thermistors in this specification shall conform to the following examples: MZ11A
2 Referenced Documents
Resistance ratio is 10
Allowable deviation ±20%bzxz.net
Nominal zero power resistor
GB2471-81 Nominal resistance series of resistors for electronic equipment SJ20275—93 Positive temperature 3.1 Detailed requirements
Nominal zero power resistance
Allowable deviation ±20%
Shall comply with the provisions of SJ20275 Positive temperature coefficient thermistor general specification and this detailed specification. 3.2 Design and structure
The design structure and dimensions of the thermistor shall comply with the provisions of Figure 1. Approved by the Ministry of Machinery and Electronics Industry of the People's Republic of China on November 19, 1992
Implementation on May 1, 1993
SJ 20276-93
3.3MZ11A The main parameters of the temperature coefficient thermistor shall comply with the provisions of Table 1, and the zero power resistance at 25°C shall comply with the EG and IE12 series.
Nominal zero power resistance
3.4 ​​Quality
Resistance range
1002~10ko
Permissible deviation of resistance
Apparent power
MZ11A positive temperature coefficient thermistor The maximum value is 0.5g3.5 Standard zero power resistance value
Time constant
Rated power
When inspected according to 4.6.3 of SJ20275, the nominal zero power estimation and allowable deviation shall comply with the provisions of Table 1. 3.6 Electric group ratio and resistance Permissible deviation
The resistance ratio of the MZ.11A thermistor is 10, and the permissible deviation is ±10%, ±20%, ±30%: 3.7 Thermistor overflow characteristics
The resistance humidity characteristics of thermistors are determined according to the coefficients given in Table 2: Table 2
For example: The zero-power resistance value of the thermistor under test is 220Ω at a temperature of 25\℃. It is necessary to obtain the resistance value at 75°℃. The corresponding coefficient of 75℃ in the table is 3.42. Multiplying 2202 by 3.42 gives the resistance value of the thermistor at 75°℃, which is 752.4Ω. 3.8 Appearance quality of thermistor
The insulation encapsulation layer of the thermistor should be complete, smooth, free of bubbles and pores, the label should be clear, and the coating of the lead-out terminal should be intact without oxidation and scars. According to SJ20275+4.6.7, the insulation should also be greater than 100MΩ2 and according to 4.6.8, the dielectric withstand test should meet the requirements.
3.9 Solderability
SJ 20276—93
After the test according to 4.6.5 of SJ20275, the impregnated surface of the lead should be coated with at least 95% of the new short material, and the remaining 5% of the surface is only allowed to have small and concentrated pinholes or pores. 3.10 Short-term load
When tested according to 4.6.6 of SJ20275, there should be no arcing, burning, scorching or breaking, and the resistance value change after the test should not exceed ±10%.
3.11 Low filtration storage
When tested according to 4.6.9 of SJ20275, there should be no mechanical damage, and the resistance change after the test should not exceed -5%. 3.12 High temperature storage
Inspect according to 4.6.10 of S20275, T=100+2cC and keep 1001, the resistance change after the test should be ≤15%
3.13 Terminal strength
When tested according to 4.6.13 of SJ20275, a pull of 5N is applied to the terminal of the thermistor. After holding for 5-~10s, there should be no breakage or loosening of the thermistor, and the resistance change should not exceed ±5%. 3.14 Wet temperature shock
Perform a secondary shock between -55°C and 100°C according to 4.6.15 of SJ20275: 1: There should be no mechanical damage after the test, and the resistance value change should not exceed ±10%: 3.15 Welding heat resistance
After the test according to 4.6.16 of SJ20275, there should be no mechanical damage, and the resistance value change should not exceed +5% 3.16 Moisture resistance
After the test according to 4.6.17 of SJ20275: There should be no mechanical damage, and the resistance value change should not exceed ±5%. 3.17 Bearing life
After the test according to 4.6.18 of SJ20275, the resistance value change should not exceed =20%. 3.18 Long-term high temperature exposure
After the test according to 4.6.19 of SJ20275, after 100h and 1000h test, the resistance value change should not exceed +10% and ±20% respectively
3.19 High frequency vibration
After the test according to 4.6.20 of SJ20275, there should be no mechanical damage, and the resistance value change should not exceed 15% 3.20 Shock
After the test according to 4.6.21 of SJ20275, there should be no mechanical damage, and the resistance value change should not exceed ±5% 3.21 Water immersion
After the test according to 4.6.22 of SJ20275, there should be no corrosion and other mechanical damage, and the resistance value change should not exceed ±5% 4 Quality assurance regulations
The polishing inspection shall be in accordance with the provisions of Chapter 4 of SJ20275. 5 Delivery preparation
Delivery preparation shall comply with the provisions of Article 5 of SJ20275. 6 Explanation
The explanations in SJ20275 shall also apply to this specification. 3-
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Additional explanation:
SJ20276—93
This specification is proposed by the Science and Technology Quality Bureau of China Electronics Corporation. This specification is under the jurisdiction of China Electronics Technology Standardization Institute. This specification was drafted by the Seventh Five-Year Plan (main sponsor) and China Electronics Technology Standardization Institute (deputy director). The main drafters of this specification are: Xia Pengcheng Qianyuan, Wang Dianqi, and Yang Jingyi. Project code: B01028.
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