1、 MIL-PRF-1/1473F 7 June 2012 SUPERSEDING MIL-PRF-1/1473E 27 March 2000 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, POWER TYPE 8189 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the electron tube described herein
2、 shall consist of this document and the latest issue of MIL-PRF-1. DESCRIPTION: Tetrode. See figure 1. Operating position: Vertical, base down or up Weight: 1.5-pound nominal (680 grams). ABSOLUTE RATINGS: Pulse modulated (R load) Parameter: F Ef Eb Ec1 Ec2 Ib ib ik Unit: MHz V ac kV dc V dc V dc mA
3、 dc a a Maximum: 110 7.9 30 -1,000 2,500 - 8.0 12.0 Minimum: - 7.1 - - - - - - Test conditions: - 7.5 2.5 Adjust 500 400 - - ABSOLUTE RATINGS: Pulse modulated (R load) Parameter: Pp Pg1 Pg2 TE T(seal) Duty Cooling Unit: W W W C C 1/ 2/ Maximum: 1,000 25 75 225 200 - - Minimum: - - - - - - - Test con
4、ditions: - - - - - - 3/ See footnotes at end of table I. _ GENERAL: Qualification: Not required. This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table III. AMSC N/A FSC 5960 INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitted wit
5、hout license from IHS-,-,-MIL-PRF-1/1473F 2 TABLE I. Testing and inspection. Inspection Method Notes Conditions Symbol Limits Unit MIL-STD-1311 Min Max Conformance inspection, part 1 Filament current 1301 - If 20.0 22.7 A ac Peak emission 1231 - eb = ec1 = ec2 = 2,500 v is +15.0 - a Electrode curren
6、t (screen) 1256 - Ic2 0 +20 mA dc Electrode voltage (1) (grid) 1261 - Ec1 -15 -35 V dc Total grid current 1266 4/ Ic1 - -25 A dc Primary grid emission (control) 1266 - Ef = 8.25 V ac; Pg1 = 30 W or Ic1 = 150 mA dc; t = 15 seconds; anode and screen grid floating Isg1 - -250 A dc Primary grid emission
7、 (screen) 1266 - Ef = 8.25 V ac; Pg2 = 90 W or Ic2 = 160 mA dc; t = 15 seconds; Ec1 = 0; anode floating Isg2 - -250 A dc Electrode voltage (2) (grid) 1261 - Eb = 30 kV dc; Ec2 = 2,500 V dc; Ec1/Ib = 30 A dc Eco - -600 V dc Operation of vacuum modulators 3269 - Ebb = 35 kV dc; Ec2 = 2,500 V dc; Ec1 =
8、 -1,000 V dc (max); tp = 10 s; prr = 2,000; egk/ib = 1.4 a; t = 5 minutes (see figure 2) - - - - Conformance inspection, part 2 Low-frequency vibration 1031 5/ - No voltages - - - - Bump 1036 - Angle = 10 - - - - Amplification factor (g1 to g2) 1316 - Ec2 = 1,000 V dc; Ic2 = 75 mA dc; Eb = 0 Mu 6.1
9、7.7 - Direct-interelectrode capacitance 1331 - Cgp Cin Cout - 23.8 6.8 0.35 32.4 9.4 pF pF pF See footnotes at end of table. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1473F 3 TABLE I. Testing and inspection - Continued. Inspection Met
10、hod Notes Conditions Symbol Limits Unit MIL-STD-1311 Min Max Conformance inspection, part 2 - Continued 5/ Current division; short pulse (method B) 1372 - Eb = 3,000 V dc; Ec2 = 2,500 V dc; Ec1 = -500 V dc; egk/ib = 5.0 a egk ic1 ic2 - - - 150 250 3.0 v ma a Conformance inspection, part 3 Life test
11、- 6/ Group C; power oscillation; t = 500 hours - - - - Life-test end points: Peak emission Primary-grid emission (control) Primary-grid emission (screen) - 1231 1266 1266 - - - is Isg1 Isg2 12.0 - - - -250 -250 a A dc A dc 1/ During operation under pulsed conditions, duty shall be maintained at low
12、enough level that average tube dissipation ratings are not exceeded. For pulse lengths in excess of 0.1 second, some reduction of electrode dissipation ratings will be required. 2/ Adequate forced-air cooling shall be provided to maintain base and anode seal temperatures below their maximum ratings.
13、 In all cases of operation, it is recommended that a heat-radiating connector, EIMAC HR-8, or equivalent, be installed on the anode terminal, and that a socket and chimney be employed which provide for cooling of the seals. The following table applies to the sockets referenced on Drawings 259-JAN an
14、d 293-JAN, with the chimney as referenced on Drawing 293-JAN, at sea level, and with air at 25C, and should be considered as minimum cooling requirements. The approximate pressure drop values given for the socket referenced on Drawing 259-JAN are as measured in the socket; those for the socket as re
15、ferenced on Drawing 293-JAN are measured in the equivalent of a pressurized chassis or plenum chamber. The data applies with maximum rated anode dissipation. Frequency Socket and chimney (see Drawing 259-JAN) Socket and chimney (see Drawing 293-JAN) Airflow (cfm) Approximate pressure drop (In.H20) A
16、irflow (cfm) Approximate pressure drop (In.H20) 30 to 110 MHz Below 30 MHz 35 20 1.9 0.6 35 20 1.0 0.42 Cooling air shall be supplied before or simultaneously with the application of filament voltage and may be removed simultaneously with filament voltage. Operation at higher altitudes or higher amb
17、ient temperatures will require an increase in cooling airflow. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1473F 4 TABLE I. Testing and inspection - Continued. 3/ During all electrical tests involving application of filament power, forc
18、ed-air cooling of the tube is allowable and a heat-dissipating connector (EIMAC Type HR-8, or equivalent) may be used on the anode terminal. 4/ This test is to be the first test performed at the conclusion of the holding period. 5/ When type 8166 of MIL-PRF-1/37 and type 8189 are physically identica
19、l, and have been made in the same production period, differing only in high voltage processing and testing of type 8189, then one sample may represent both types insofar as the listed tests are identical. 6/ When type 8166 of MIL-PRF-1/37 and type 8189 are physically identical and have been made in
20、the same production run, differing only in high voltage processing and testing of type 8189, then one life-test sample may represent both types. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1473F 5 NOTE: Dimensions listed under conforman
21、ce inspection, part 3, shall be checked annually, using an accept on zero defect sampling plan on a sample of four tubes. In case of failure, the failing dimension(s) shall become a part of conformance inspection, part 2, for three consecutive successful submissions, at which time the test may rever
22、t to the conformance inspection, part 3, basis. FIGURE 1. Outline drawing of electron tube type 8189. Dimensions Ltr Inches Millimeters Min Max Min Max Conformance inspection, part 2 A 8.875 9.625 225.43 244.48 B - 5.250 - 133.35 C 8.000 8.750 203.20 222.225 E - .313 - 7.95 Conformance inspection, p
23、art 3 (see note) D - 3.625 - 92.08 F .825 .925 20.96 23.50 G Cap: C1-26 (EIA) N 1.495 1.505 37.97 38.23 P .371 .377 9.42 9.58 Reference dimensions K 60 L 30 M 30 Pin connections Pin No. Element 1 and 5 2 and 4 3 Cap f g2 g1 a Provided by IHSNot for ResaleNo reproduction or networking permitted witho
24、ut license from IHS-,-,-MIL-PRF-1/1473F 6 FIGURE 2. Operation test circuit. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/1473F 7 Referenced documents. In addition to MIL-PRF-1, this specification sheet references: MIL-STD-1311 Drawing 25
25、9-JAN Drawing 293-JAN MIL-PRF-1/37 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 assumes no liability whatsoever for any inaccuracies in these notations. Bidders and
26、 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. Custodian: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5960-2012-027) DLA - CC Review
27、activities: Navy - AS, CG, MC, OS, SH 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.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
