1、 MIL-PRF-1/1593E 15 August 2012 SUPERSEDING MIL-PRF-1/1593D 17 August 2004 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, RECEIVING TYPE 8233 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the electron tube describe
2、d herein shall consist of this document and the latest issue of MIL-PRF-1. DESCRIPTION: Pentode, sharp cutoff. Outline: See figure 1. Base: E9-23. Envelope: T9. Cathode: Coated unipotential Base connections: Pin No. 1 2 3 4 5 6 7 8 9 Element a g3 g2 h h g3 k g1 k ABSOLUTE MAXIMUM RATINGS: Parameter:
3、 Ef Ebb Eb Ecc2 Ec2 Ec3 Ecc1 Ec1 egk Unit: V V dc V dc V dc V dc V dc V dc V dc v Maximum: 6.6 400 200 350 175 - - 0, -55 0 Minimum: 6.0 - - - - - - - -110 Test conditions: 6.3 136 - 136 - 0 +8 - - ABSOLUTE MAXIMUM RATINGS: Parameter: Ehk Rk Rg1 Ik Pg2 Pp TE Alt Unit: v Ohms Meg mA dc W W C ft Maxim
4、um: 200 - 0.125 75 1.5 10 180 60,000 Minimum: - - - - - - - - Test conditions: 0 200 - - - - - - See footnotes at end of table I. _ GENERAL: Qualification: Not required. AMSC N/A FSC 5960 INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL
5、-PRF-1/1593E 2 TABLE I. Testing and inspection. Inspection Method Notes Conditions Symbol Limits Unit MIL-STD-1311 5/ Min Max Conformance inspection, part 1 Heater current 1301 - If 540 660 mA dc Heater-cathode leakage 1336 - Ihk - 15 A dc Total grid current 1266 - Ic1 0 -1.0 A dc Electrode voltage
6、(grid 1) 1261 1/ Ec1 2.3 3.7 V dc Electrode current (screen) 1256 - Ic2 - 7.0 mA dc Transconductance (1) 1306 - Sm 38,000 52,000 mhos Electrode current (anode) 1256 - Ec1= -6 V dc; Eb = 125 V dc; Ec2 = 125 V dc Ib - 1.0 mA dc Short and discontinuity detection 1201 - egk = 110 v (max) - - - - Conform
7、ance inspection, part 2 Insulation of electrodes 1211 - E (g1 to all) = -50 V dc E (a to all) = -200 V dc - - - - Transconductance (2) 1306 - Ef = 5.7 V Sm Ef - 10 % Amplification factor 1316 2/ Mu 26 34 - Grid emission 1266 3/ Ef = 7.5 V; Ecc1 = -10 V dc; Rg1 = 0.1 Meg Ic1 0 -2.0 A dc Direct-intere
8、lectrode capacitance 1331 - No shield Cin Cout Cgp 15 3.6 - 21 4.4 0.15 pF pF pF Barometric pressure, reduced 1002 - Pressure = 55 5 mmHg; voltage = 300 V ac - - - - High-frequency vibration 1031 - Rp = 2,000 ohms; Rk = 56 ohms, unbypassed; Rg = 20,000 ohms; Cg2 = 25 F; Ebb = Ecc2 = 225 V dc; Ec1 =
9、0 F = 50 Hz Ep - 50 mV ac See footnotes at end of table. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1593E 3 TABLE I. Testing and inspection - Continued. Inspection Method Notes Conditions Symbol Limits Unit MIL-STD-1311 5/ Min Max Conf
10、ormance inspection, part 2 - Continued Shock 1041 4/ 450 G; no voltages applied - - - - Vibration-fatigue 1031 4/ - - - - Shock and vibration- fatigue-test end points: High-frequency vibration - 1031 - Rp = 2,000 ohms; Rk = 56 ohms, unbypassed; Rg2 = 20,000 ohms, Cg2 = 25 F; Ebb = Ecc2 = 225 V dc; E
11、c1 = 0; F = 50 Hz Ep - 100 mV ac Heater-cathode leakage 1336 - Ihk - 25 A dc Total grid current 1266 - Ic1 0 -2.0 A dc Change in transconduc- tance (1) of individual tubes 1306 - Sm t - 20 % Envelope strain 2126 - - - - - Permanence of marking 1105 - - - - - Conformance inspection, part 3 Heater-cyc
12、ling life 1506 - Ef = 7.5 V; Ehk = 140 V ac; Ec1 = Ec2 = Eb = 0 - - - - Heater-cycling life-test end point: Heater-cathode leakage - 1336 - Ihk - 25 A dc Stability life 1516 - Ehk = -200 V dc; Rg1 = 0.1 Meg; TA = room - - - - See footnotes at end of table. Provided by IHSNot for ResaleNo reproductio
13、n or networking permitted without license from IHS-,-,-MIL-PRF-1/1593E 4 TABLE I. Testing and inspection - Continued. Inspection Method Notes Conditions Symbol Limits Unit MIL-STD-1311 5/ Min Max Conformance inspection, part 3 - Continued Stability life-test end point: Change in transcon- ductance (
14、1) of individual tubes - 1306 - Sm t - 10 % Intermittent life 1501 6/ Ehk = -200 V dc; Rg1 = 0.1 Meg - - - - Intermittent life-test end points (500 hours) Total grid current Heater current Change in transcon- ductance (1) of individual tubes Transconductance (2) Heater-cathode leakage Insulation of
15、electrodes Transconductance (1), average change - 1266 1301 1306 1306 1336 1211 1306 7/ - - - - - - - Ef = 5.7 V E (g1 to all) = -50 V dc E (a to all) = -200 V dc Ic1 If Sm t Sm Ef Ihk - Avg Sm t 0 530 - - - - - -2.0 670 20 15 30 - 15 A dc mA % % A dc - % Intermittent life-test end points (1,000 hou
16、rs) Total grid current Change of transcon- ductance (1) of individual tubes Heater-cathode leakage Insulation of electrodes - 1266 1306 1336 1211 8/ - - - - E (g1 to all) = -50 V dc E (a to all) = -200 V dc Ic1 Sm t Ihk - 0 - - - -2.0 25 30 - A dc % A dc - See footnotes at top of next page. Provided
17、 by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1593E 5 TABLE I. Testing and inspection - Continued. 1/ This voltage shall be read with a high-impedance voltmeter connected between grid and cathode. 2/ The screen grid shall be utilized as the anode
18、 (output is in screen grid circuit). Anode voltage = 136 V dc. 3/ Prior to this test, tubes shall be preheated 5 minutes at the conditions indicated below. The 3-minute test is not permitted. Test at specified conditions within 3 seconds after preheating. Grid emission shall be the last test perform
19、ed on the sample selected for grid emission test. Ef Ebb Ecc2 Ecc1 Rg1 Rk V V dc V dc V dc Meg Ohms 7.5 136 136 +8 0.125 200 4/ This test shall be conducted on the initial lot and thereafter on a lot approximately every 12 months. When one lot has passed, the 12-month rule shall apply. In the event
20、of lot failure, the lot shall be rejected and the succeeding lots shall be subjected to this test until a lot passes (see 5/). 5/ This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table III. 6/ The life-test sample shall consist of 20 tubes per lot and no tub
21、e failures shall be permitted. In the event of rejection of the first sample, a second sample of 40 tubes shall be selected from the lot. Acceptance shall then be based on the combined first and second samples and shall not exceed a total of two tube failures. 7/ No defectives per characteristic sha
22、ll be allowed for the first sample. Total defectives shall be not greater than 1 for combined samples. 8/ No defectives per characteristic shall be allowed for the first sample. Total defectives shall be not greater than 2 for combined samples. 9/ Marginal notations are not used in this revision to
23、identify changes with respect to the previous issue, due to the extensiveness of the changes. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1593E 6 NOTES: 1. Dimensions are in inches. 2. Metric equivalents are given for general informatio
24、n only and are based on 1 inch = 25.4 mm. 3. The minimum measurement should be made in the area included between .375 inch (9.53 mm) from the bottom of bulb to the top of bulb body. FIGURE 1. Outline drawing of electron tube type 8233. Dimensions Ltr Inches Millimeters Min Max Min Max A - 1.189 DIA
25、- 30.20 DIA B - 2.800 - 71.12 C - 2.461 - 62.51 D - 1.189 DIA - 30.20 DIA E .250 - 6.35 - F - .375 - 9.53 G .0485 DIA .0530 DIA 1.232 DIA 1.346 DIA H 36 TYP 36 TYP J .682 DIA .692 DIA 17.32 DIA 17.58 DIA Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
26、,-MIL-PRF-1/1593E 7 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 a
27、ssumes 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 previous issue. Custodian: Preparing activity: Army -
28、 CR DLA - CC Navy - EC Air Force - 85 (Project 5960-2012-048) DLA - CC Review activities: Army - CR4 Navy - AS, CG, MC, OS, SH Air Force - 19, 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-,-,-
