1、AMSC N/A FSC 5960 MIL-E-1/188J 17 September 2013 SUPERSEDING MIL-E-1/188H 26 March 2003 MILITARY SPECIFICATION SHEET ELECTRON TUBE, RECEIVING TYPES 6021W 1/ AND 6021WSPL 2/ Inactive for new design after 7 March 1997. This specification is approved for use by all Departments and Agencies of the Depar
2、tment of Defense. The requirements for acquiring the electron tube described herein shall consist of this document and MIL-PRF-1. DESCRIPTION: Twin triode, subminiature, medium Mu. Outline - 3-1 (EIA) Base - E8-10 Envelope - T3 Cathode - Coated uni-potential Base connections: Pin no. - 1 2 3 4 5 6 7
3、 8 Element - 2a 2g h 2k 1k h 1g 1a ABSOLUTE RATINGS: Parameter: Ef Eb Ec Ehk Rk/k Rg/g Ib/b Ic/c Pp/p TE Alt Unit: V V dc V dc v Ohms Meg mA dc mA dc W C ft Maximum: 6.6 165 0 200 - 1.1 22 5.5 0.7 220 3/ Minimum: 6.0 - -55 - - - - - - - 3/ Test conditions: 6.3 100 0 4/ 150 - - - - - - GENERAL: Quali
4、fication Not required This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table III. _ 1/ 6021W was formerly type 6021 2/ The additional test requirements specified for tube type 6021WSPL are intended to provide a tube that will consistently operate satisfactor
5、ily in the PRF circuit of the modulator unit of the AN/ARN-21 Tacan set. 3/ See “Reduced pressure (altitude) rating“, and altitude, maximum peak voltage in the basic document. 4/ Unless otherwise specified, the reference point for heater-cathode potential shall be the positive terminal of the cathod
6、e resistor. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-1/188J 2 TABLE I. Testing and inspection. Requirement or test MIL-STD-1311 Method Notes Conditions Symbol Limits Units Min Max Conformance inspection, part 1 Electrode curre
7、nt (1) (anode) 1256 Ib 4.5 8.5 mA dc Electrode current (2) (anode) 1256 2/ Ec = -6.5 V dc; Rk = 0 Ib - 100 A dc Electrode current (3) (anode) type 6021WSPL 1256 1/ 2/ Ec = -5.5 V dc; Rk = 0 Ib - 50 A dc Total grid current 1266 2/ 3/ Eb = 150 V dc; Rk = 300 ohms; Rg = 2.0 Meg Ic 0 -0.3 A dc Heater cu
8、rrent 1301 If 280 320 mA Transconductance (1) 1306 2/ Sm 4,450 6,350 mhos Heater-cathode leakage 1336 2/ Ihk - 5.0 A dc Short and discontinuity detection 1201 - - - - Conformance inspection, part 2 Insulation of electrodes 1211 2/ - - - - High-frequency vibration 1031 2/ Rp = 10,000 ohms; Ep - 50 mV
9、 ac Audio frequency noise 1246 4/ 5/ Esig = 65 mV ac; Rg = 0.1 Meg; Rp = 0.01 Meg; Rk = 75 ohms - - - - Electrode current (1) (anode) (difference between sections) 1256 Ib - 1.6 mA dc Grid emission 1266 2/ 6/ Ef = 7.5 V; Ec = -7.5 V dc; Eb = 150 V dc; Rk = 0; Rg = 1.0 Meg Ic 0 -0.5 A dc Transconduct
10、ance (2) 1306 2/ Ef = 5.7 V Sm Ef - 15 % Amplification factor 1316 2/ Mu 30 40 - Direct-interelectrode capacitance 1331 2/ No shield No shield No shield; section 1 No shield; section 2 No shield No shield Cgp Cin Cout Cout Cgg Cpp 1.2 1.8 0.20 0.22 - - 1.8 3.0 0.36 0.42 0.013 0.52 pF pF pF pF pF pF
11、See footnotes at end of table. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-1/188J 3 TABLE I. Testing and inspection - Continued. Requirement or test MIL-STD-1311 Method Notes Conditions Symbol Limits Units Min Max Conformance inspection, pa
12、rt 2 - Continued Pulse emission 1231 2/ 7/ Ef = 6.0 V; e pulse = 50 v; tp = 25 s; prr = 200 pps is 300 - ma Pulse cathode current (1) Type 6021WSPL - 1/ 2/ 8/ Ef = 6.3 V; eb = 150 v; Ec = -25 V dc; egk = +30 v ik ik(tp) 330 - - 10 mA % Pulse cathode current (2) Type 6021WSPL - 1/ 2/ 8/ Ef = 5.9 V; e
13、b = 150 v; Ec = -25 V dc; egk = +30 v ik 310 - mA Lead fatigue 1116 - - - - Envelope strain 2126 - - - - Shock 1041 9/ 10/ 450 G; ehk = +100 V dc; Rg = 0.1 Meg - - - - Vibration-fatigue 1031 - - - - Shock and vibration- fatigue-test end points: - High-frequency vibration 1031 2/ Rp = 10,000 ohms Ep
14、- 200 mV ac Heater-cathode leakage 1336 2/ Ihk - 20 A dc Change in transconduct- ance (1) of individual tubes 1306 2/ Sm t - 20 % Permanence of marking 1105 - - - - Conformance inspection, part 3 Heater-cycling life 1506 Ef = 7.0 V; 1 min on, 4 min off; Ehk = 140 V ac; Ec = Eb = 0 - - - - Stability
15、life 1516 Ehk = +200 V dc; Rg/g = 1.0 Meg; TA = room - - - - Stability life-test end point: (2 and 20 hours) - Change in transconduct- ance (1) of individual tubes 1306 2/ Sm t - 15 % See footnotes at end of table. Provided by IHSNot for ResaleNo reproduction or networking permitted without license
16、from IHS-,-,-MIL-E-1/188J 4 TABLE I. Testing and inspection - Continued. Requirement or test MIL-STD-1311 Method Notes Conditions Symbol Limits Units Min Max Conformance inspection, part 3 - Continued Intermittent life 1501 11/ Ehk = +200 V dc; Rg/g = 1.0 Meg - - - - Intermittent life-test end point
17、: (1,000 hours) - Insulation of electrodes 1211 - - - - Intermittent life (high temperature) 1501 11/ Ehk = +200 V dc; Rg/g = 1.0 Meg; TE = 220C (min) - - - - Intermittent life (high temperature) - test end points: (1,000 hours) - Total grid current 1266 2/ Eb = 150 V dc; Rk = 300 ohms; Rg = 1.0 Meg
18、 Ic 0 -0.9 A dc Heater current 1301 If 276 328 mA Change in transconduct- ance (1) of individual tubes 1306 2/ Sm T - 25 % Transconductance (2) 1306 2/ Ef = 5.7 V Sm Ef - 20 % Heater-cathode leakage 1336 2/ Ihk - 10 A dc Insulation of electrodes 1211 2/ - - - - NOTES: 1/ The additional test requirem
19、ents specified for tube type 6021WSPL are intended to provide a tube that will consistently operate satisfactorily in the PRF circuit of the modulator unit of the AN/ARN-21 Tacan set. 2/ Test each unit separately. 3/ This test shall be performed at the conclusion of the holding period. 4/ Tie 1k to
20、2k; 1g to 2g; and 1a to 2a. 5/ The rejection level shall be set at the VU meter reading obtained during calibration. 6/ Prior to this test, the TUT shall be preheated a minimum of 5 minutes with both sections operating at the conditions specified below. The 3-minute test shall not be permitted. Test
21、 at specified conditions within 3 seconds after preheating. Grid emission shall be the last test performed on the sample selected for the grid emission test. Ef Ec Eb Rk Rg V V dc V dc Ohms Meg 7.5 0 150 500 1.0 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
22、m IHS-,-,-MIL-E-1/188J 5 TABLE I. Testing and inspection - Continued. 7/ The pulse is essentially a square wave with 1.0-s rise time and 0.8-s fall. The pulse shall be applied to anode and grid tied together. Pulse emission shall be measured in terms of voltage, developed across a 1.0-ohm resistor i
23、n the cathode circuit. Limit shall be tested as measured by the leading edge of a calibrated oscilloscope trace, the amplitude of the trailing edge of which shall not vary by more than 20 percent from the value of the leading edge. 8/ The grid pulse shall be a square wave meeting the pulse shape req
24、uirements of method 1296, and in addition, the maximum amplitude shall occur within the first 20 percent of tp, tp = 10 s, and prr = 1,000 pps. The pulse shall be applied to the grid by means of a driving circuit which produces the specified peak pulse voltage directly at the grid terminal with resp
25、ect to the cathode. Grid resistance, not exceeding 50 ohms, may be inserted to prevent oscillation, provided readjustment of grid drive is made to maintain the specified pulse amplitude directly at the grid terminal. Peak currents shall be measured by means of a high-impedance oscilloscope, or equiv
26、alent device, connected across a cathode resistor of 1.0 0.01 ohm. The specified limit refers to the maximum of the pulse amplitude. The variation of the output pulse amplitude between 20 and 80 percent tp shall not exceed the specified limits for ik(tp). Peak cathode current shall be read after 10
27、seconds or in the case of slumping peak cathode current, when a stable reading is obtained. 9/ Leads may be clipped for application of voltages during impact. 10/ A grid resistor of 0.1 Meg shall be added to each section, except when a thyratron-type short indicator is used. 11/ Envelope temperature
28、 (TE) requirements, when measured in accordance with the temperature by conduction-band measurement (MIL-STD-1311 method 1226), will be satisfied if a TUT having bogey Ib (5 percent) under normal test conditions, is determined to operate at or above minimum specified temperature at any position in t
29、he life-test rack. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-1/188J 6 Reference documents. In addition to MIL-PRF-1 this specification sheet references MIL-STD-1311. The margins of this specification are marked with vertical lines to indi
30、cate where changes from the previous issue were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned to evaluate the requirements of this document based on the entire content irresp
31、ective of the marginal notations and relationship to the last previous issue. Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5960-2013-025) DLA - CC Review activities: Army - AR, AV, CR4, MI Navy - AS, CG, MC, OS, SH Air Force - 99 NOTE: The activities listed ab
32、ove were interested in this document as of the date of this document. Since organizations and responsibilities can change, you should verify the currency of the information above using the ASSIST Online database at https:/assist.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
