1、AMSC N/A FSC 5960 MIL-E-1/190K 17 September 2013 SUPERSEDING MIL-E-1/190J 21 February 2003 MILITARY SPECIFICATION SHEET ELECTRON TUBE, RECEIVING TYPE 6112 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the electron
2、tube described herein shall consist of this document and MIL-PRF-1. DESCRIPTION: Twin triode, subminiature, high Mu. Outline - 3-1 (EIA). Base - E8-10. Envelope - T3. Cathode - Coated unipotential. Base connections: Pin No. - 1 2 3 4 5 6 7 8 Element - 2a 2g h 2k 1k h 1g 1a ABSOLUTE RATINGS: Paramete
3、r: Ef Eb Ec Ehk Rk/k Rg/g Ib/a Pp/a TE Alt Unit: V V dc V dc v Ohms Meg mAdc W C ft Maximum: 6.6 165 0, -55 200 - 1.1 3.3 0.30 +220 See Note 1 Minimum: 6.0 - - - - - - - - - Test Conditions: 6.3 100 0 0 1,500 - - - - - GENERAL: Qualification Not required. First article test is required and shall con
4、sist of all tests in table I with a sample size of 2 for a lot size less than or equal to 150 units and a sample size of 4 for a lot size greater than or equal to 151 units. All samples shall pass conformance inspection part 1 of table I before continuing. Half of the samples shall then be subjected
5、 to conformance inspection part 2, and the remaining samples shall be subjected to part 3, with no test failures permitted during any testing. After first article approval, acceptance testing shall consist of conformance inspection part 1 of table I with sample size in accordance with table III, cat
6、egory XVI (acceptance level 10.0) of MIL-PRF-1. INCH-POUND Inactive for new design after 7 March 1997. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-1/190K 2 TABLE I. Testing and inspection. Requirement or test MIL-STD-1311 Method Conditions
7、Symbol Limits Units Min Max Conformance inspection, part 1 Electrode current (1) (anode) 1256 See note 2 and 3 Ib 0.5 1.10 mA dc Electrode current (2) (anode) 1256 Ec = -2.8 V dc; Rk = 0 (see note 2) Ib - 50 A dc Total grid current 1266 Eb = 150 V dc; Ec = 0; Rk/k = 820 ohms; Rg/g = 1.0 Meg (see not
8、es 2 and 3) Ic 0 -0.3 A dc Heater current 1301 If 280 320 mA Transconductance (1) 1306 See note 2 Sm 1,500 2,100 mhos Heater-cathode leakage 1336 See note 2 Ihk - 5.0 A dc Short and discontinuity detection 1201 - - - - Conformance inspection, part 2 Insulation of electrodes 1211 See note 2 - 50 - -
9、Low-frequency vibration 1031 Rp = 10,000 ohms; E = 40 Hz; 15 G (see note 2) Ep - 25 mV ac Audio frequency noise 1246 Esig = 45 mV ac; Rg = 0.5 Meg; Rp = 0.2 Meg; Rk = 750 ohms; (see note 4) EB - 17 vu Grid currents 1266 Ef = 7.5 V; Ec = -4.0 V dc; Eb = 150 V dc; Rk = 0; Rg/g = 1.0 Meg (see notes 2 a
10、nd 5) Ic 0 -0.5 A dc Transconductance (2) 1306 Ef = 5.7 V (see note 2) Sm Ef - 15 % Amplification factor 1316 See note 2 Mu 60 80 - AC amplification 1321 Ebb = 100 V dc; Ecc = 0; Esig = 0.2 V ac; Rk = 0 (see note 2) Ep 8.0 - V ac Provided by IHSNot for ResaleNo reproduction or networking permitted w
11、ithout license from IHS-,-,-MIL-E-1/190K 3 TABLE I. Testing and inspection - Continued. Requirement or test MIL-STD-1311 Method Conditions Symbol Limits Units Min Max Conformance inspection, part 2 -Continued Direct-inter-electrode capacitance 1331 No shield (see note 2) No shield (see note 2) No sh
12、ield; section 1 No shield; section 2 No shield; No shield Cgp Cin Cout Cout Cgg Cpp 0.8 1.30 0.16 0.21 - - 1.20 2.10 0.30 0.35 0.014 0.80 pF pF pF pF pF pF Lead fatigue 1116 - - - - Envelope strain 2126 - - - - Shock 1041 450 G; EhK = +100 V dc; Rg = 0.1 Meg; (see note 6) - - - - Vibration fatigue 1
13、031 2.5 G; fixed frequency; F = 25 min, 60 max - - - - Post-shock and vibration-fatigue test end points: - Low-frequency vibration 1031 Ep - 100 mV ac Heater-cathode leakage 1336 Ihk - 20 A dc Change in transconductance (1) of individual tubes 1306 Sm t - 20 % Permanence of marking 1105 Conformance
14、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 life 1516 Eb = 150 V dc; Ehk = +200 V dc; Rg/g = 1.0 Meg; Rk/k = 820 ohms; TA = room (see note 2) - - - - Stability life-test end point: - Change in transconductance (1) of
15、individual tubes 1306 Sm t - 10 % Intermittent life (room temperature) 1501 Stability life test, or equivalent conditions; TA = room Intermittent life-test end point (room temperature) (500 hours): - Insulation of electrodes 1211 R 50 - Meg Provided by IHSNot for ResaleNo reproduction or networking
16、permitted without license from IHS-,-,-MIL-E-1/190K 4 TABLE I. Testing and inspection - Continued. Requirement or test MIL-STD-1311 Method Conditions Symbol Limits Units Min Max Conformance inspection, part 3 -Continued Intermittent life-test end point (room temperature) (1,000 hours): - Insulation
17、of electrodes 1211 R 25 - Meg Intermittent life (high temperature) 1501 Stability life-test conditions; TE = +220C (min) (see notes 2 and 7) - - - - Intermittent life-test end points (500 hours) (high temperature): - Total grid current 1266 Ic 0 -0.9 A dc Heater current 1301 If 276 328 mA Change in
18、transconductance (1) of individual tubes 1306 Sm t - 20 % Transconductance (2) 1306 Sm Ef - 15 % Heater-cathode leakage 1336 Ihk - 10 A dc Insulation of electrodes 1211 R 50 - Meg Transconductance (1) average change 1306 Avg Sm t - 15 % Intermittent life-test end points (1,000 hours) (high temperatu
19、re): - Total grid current 1266 Ic 0 -0.9 A dc Heater current 1301 Il 276 328 mA Change in transconductance (1) of individual tubes 1306 Sm t - 25 % Transconductance (2) 1306 Sm Ef - 20 % Heater-cathode leakage 1336 Ihk - 10 A dc Insulation of electrodes 1211 R 25 - Meg NOTES: 1. See “Reduced pressur
20、e (altitude) rating”, and altitude, maximum peak voltage in the basic document. 2. Test each unit separately. 3. This test to be performed at the conclusion of the holding period. 4. Tie 1k to 2k; 1g to 2g; and 1a to 2a. Provided by IHSNot for ResaleNo reproduction or networking permitted without li
21、cense from IHS-,-,-MIL-E-1/190K 5 NOTES: - Continued. 5. Prior to this test, tubes shall be preheated a minimum of 5 minutes with all sections operating at the conditions specified below. The 3-minute test is not permitted. Test at specified conditions within 3 seconds after preheating. Grid emissio
22、n shall be the last test performed on the sample selected for the grid-emission test. Ef Ec1 Eb Rk Rg V V dc V dc Ohms Meg 7.5 0 150 820 1.0 6. A grid resistor of 0.1 megohm shall be added; however, this resistor shall not be used when a thyratron type short indicator is used. 7. Envelope temperatur
23、e (TE) requirements, when measured in accordance with the temperature by conduction-band measurement (MIL-STD-1311, method 1226), will be satisfied if a tube having bogey Ib (5 percent) under normal test conditions, is determined to operate at or above minimum specified temperature at any position i
24、n the life-test rack. Referenced 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 indicate where changes from the previous issue were made. This was done as a convenience only and the Government
25、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 irrespective of the marginal notations and relationship to the last previous issue. Custodians: Preparing activity:
26、 Army - CR DLA - CC Navy - EC Air Force - 85 DLA - CC (Project 5960-2013-026) Review activities: Army - AR, MI Navy - AS, CG, MC, OS Air Force - 99 NOTE: The activities listed above 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-,-,-
