This specification specifies the detailed requirements for FM24 type coil-sealed tubes. This specification applies to FM24 type coil-sealed tubes. FM24 type coil-sealed tubes are mainly used for L-band broadband pulse power amplifiers of digital transmission and navigation equipment. SJ 20018-1992 Detailed Specifications for FM24 Type Coil-Sealed Tubes SJ20018-1992 Standard Download Decompression Password: www.bzxz.net
This specification specifies the detailed requirements for FM24 type coil-sealed tubes. This specification applies to FM24 type coil-sealed tubes. FM24 type coil-sealed tubes are mainly used for L-band broadband pulse power amplifiers of digital transmission and navigation equipment.
GB/T 3789-1991 Test method for electrical properties of transmitting tubes
GB 7273-1987 Test method for electrical properties of coiled sealed tubes
GB 7274-1987 Test method for inter-electrode capacitance of electron tubes
GB 11486-1989 Test method for current and voltage of hot wire or filament of electron tubes
GJB 616-1988 Test method for electron tubes
GJB 922-1990 General specification for electron tubes
GJB 921-1990 General specification for electron tube packaging
Some standard content:
1 Scope Military standard electronic tubes for the electronics industry of the People's Republic of China Detail specification for disk-seal tube of type FM241.1 Subject content This specification specifies the detailed requirements for disk-seal tube of type FM24. 1.2 Scope of application This specification applies to disk-seal tube of type FM24 SJ20018-92 FM24 disk-seal tube is mainly used for L-band broadband pulse power amplifier of data transmission and navigation equipment. 1.3 Structural characteristics Structure: metal ceramic triode. Installation position: vertically upward or downward. Cooling method: conduction forced air cooling. Mass: maximum 7g. 1.4 Dimensions For dimensions, see Figure A1 in Appendix A (Supplement). 1.5 Absolute Ratings Hot Wire Voltage Voltage between Hot Wire and Cathode Anode Pulse Voltage Grid Voltage Anode Pulse Current Grid Pulse Current Anode Dissipated Power Published by China Electronics Industry Corporation on February 1, 1992 Minimum Value Maximum Value Implemented on May 1, 1992 Pulse Width Duty Ratio| |tt||Shell temperature 1.6 Test conditions (TC) Hot wire voltage Cathode preheating time Anode voltage Anode current Grid voltage Typical characteristics Hot wire current Amplification factorwww.bzxz.net Transconductance (la=21mA) Inter-electrode capacitance: Anode and grid Anode and cathode Cathode and grid Reference documents GB/T3789-91 GB 7273—87 GB7274—87 GB11486-89 GJB616—88 GJB922—90 GJB92190 SJ20018--92 Continued Table 1 Minimum value Minimum value Maximum value Nominal value Maximum value Anode with radiator and air cooling, radiator root temperature below 60C (radiator see Appendix D) Table 3 Minimum value||t t||Test method for electrical performance of transmitting tube Test method for electrical performance of coil-sealed tube Test method for inter-electrode capacitance of electron tube Nominal value Test method for current and voltage of hot wire or filament of electron tubeTest method for electron tube General specification for electron tube General specification for packaging of electron tube Maximum value 3 Requirements 3.1 Detailed requirements SJ20018--92 All requirements for FM24 coil-sealed tube shall comply with the provisions of this specification and GJB922 "General Specification for Electron Tubes". 3.2 Marking Model: FM24; Military mark: J; Manufacture date and serial number; Manufacturer's trademark. 4 Quality Assurance Provisions Identification Inspection Inspection or Test Constant Damp Heat Low-Temperature Pulse Emission 4.2 Quality Conformity Inspection Test Ca GJB616.1013 GJB616.1018 GB/T3789.3 4.2.1 Quality Conformity Inspection Part 1 Test Conditions Non-Working State t=40±2℃ Relative Humidity 90%~95% Test After the test, let it stand at room temperature Non-working state a=100m/s2 Factory-50~80 times/min Radial and axial directions Upward 5000 times each tkyr=5min Up=Up=75V r=lμs fep=50Hz t=-55℃ t=30min Test requirements Minimum value Maximum value See C1 and C2 in Appendix C See Appendix C C1, C2 See C1 in Appendix C Inspection or test Visual inspection Dimensional inspection Hot wire current Grid voltage Grid reverse current Insulation resistance between anode and cathode Pulse radiation Leakage between hot wire and cathode GB11486 GB/T3789.21 GB/T3789.6 GB/T3789.2 SJ20018-92 Test Test conditions Non-working state Non-working state Inspect with gauge, see Figure A2 GB/T3789.12 Non-working state Measure with 500V megohmmeter GB/T3789.3 GB/T3789.12 Quality consistency inspection Inspection or test Interchangeable size Magnification factor Inter-electrode capacitance: Anode and grid Anode and cathode Cathode and grid Part 2 Uap-Ugp=75V r=lμs fep-50Hz Test conditions Inspection requirements Minimum value maximum value unit See Appendix B The measured pipe can rotate freely in the gauge Inspection requirements Minimum value maximum value unit Non-working state GB/T3789.6 GB7274 Non-working state See Figure A1 4.2.3 Quality I Conformity inspection Part 3 Inspection or test Dimensions to be controlled Vibration stability Noise voltage Hot wire cycle life test Life test Test after life test: Pulse output power Note: AQL Qualified quality level IL——Inspection level D Destructive items 5 Delivery preparation 5.1 Packaging SJ20018—92 Test conditions Non-industrial Working state GJB616.1008 Anode loop resistance Ra=1kn a=60m/s2 F=50 times/min t=3min When the voltage is connected and disconnected t=1~2.5min Cycle 1000 times Pulse oscillation state Inspection requirements Minimum value Maximum value Unit See Figure A1, C1 in Appendix C See C1 in Appendix C No short circuit in hot wire cathode Hot No broken wire See C1 and C3 in Appendix C See C1 in Appendix C f=1100~1300MHz Uap=1000V R, adjust Ip≤2A r=4μs fcp-250Hz 5.1.1 Packaging requirements SJ20018—92 a. Packaging should comply with the provisions of GJB921 "General Specification for Electronic Tube Packaging"; b. Packaging drawing number ××××××; c Product certificate, factory inspection form. 5.1.2 Packaging mark The packaging box mark should comply with GB191 "Packaging Storage and Transportation Pictorial Marking". 5.1.3 Packaging test The packaging quality is assessed by drop test. Drop test: The packaged coil-sealed tube is dropped freely from a height of 90cm on the cement floor for 4 times (once on the bottom, cover, and adjacent sides). The coil-sealed tube after the test should not have mechanical damage, and the electrical parameters of the first part of the quality consistency test should comply with the provisions of the detailed specifications. The packaging test of the coil-sealed tube is carried out during product identification or structural changes, as well as changes in packaging structure and materials. The sampling plan is n=4, c=1. 5.2 Storage Electronic tubes should be stored in a dry, ventilated warehouse without the influence of corrosive gases at an ambient temperature of -5℃ to +40℃ and a relative humidity of no more than 80%. 5.3 Transportation The packaged coil-sealed tube is allowed to be transported by any tool. During transportation, it should be avoided from intense vibration, impact, mechanical impact, direct rain and corrosion. 6 Notes 6.1 Contents of ordering documents FM24 coil-sealed pipe; Detailed specification number; Manufacturer code or name; d. Quantity. 6.2 Precautions for use When the coil-sealed pipe is stored for a long time or the storage warehouse is relatively humid, the preheating time should be appropriately extended when using it. The preheating time should be a. not less than 30 minutes. b. It must be equipped with a good heat dissipation or blowing device when using it. The temperature gradient between ceramic insulators is limited to below 100℃. c View in direction A SJ20018-92 Appendix A Appearance drawings of FM24 type coil seal tube (Supplement) Appearance drawings of FM24 type coil seal tube Quality consistency inspection Part 1, Use the gauge in Figure A2 to check the coaxiality. Quality consistency inspection Part 2 Consistency inspection Part 3 Reference size SJ20018—92 1.54±0.02 3.5±0.02 1.8±0.02 3.24+0.04 14.34+0.04 19.64+0.04 8.96+0.04 15.84+0.04 Unit: mm Figure A2FM24 Coil Sealed Tube Appearance Gauge Appendix B Visual inspection (Supplement) The coil sealed tube label should comply with the regulations and be clear and firm. The weld of the coiled tube should be smooth and flat. The surface of the coiled tube should be clean. The pins of the coiled tube should be straight Appendix C Supplement to the sampling plan and inspection requirements (Supplement) C1 Sampling plan for environmental test and life test Batch 26-100 Number of sampling (times) Sample size Number of qualified judgments C2 Inspection after environmental test: Hot wire current, transconductance, leakage current between hot wire and cathode parameters shall meet the requirements of part 1 of quality consistency inspection. C3 Except for non-working and defective hot wire and cathode defective products, other unqualified electrical performance tubes can be used for this test. 8 SJ20018-92 Appendix D Anode radiator (Supplement) This appendix specifies the shape and size of the anode radiator for the FM24 type coil sealed tube test. 98 Figure D1FM24 coil sealed tube anode radiator Additional notes: This standard is proposed by the Science and Technology Quality Bureau of China Electronics Industry Corporation. This standard is under the jurisdiction of China Electronics Technology Standardization Institute. This standard was drafted by China Electronics Standardization Institute and the State-owned 774 Factory. The main drafters of this standard are: Hong Zheng, Duan Ruiyan, Zhang Quanshun, Liang Qin, Lai Wanqiong. Project code: B91038. Material: Brass Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.