1、 MIL-PRF-1/148E 29 May 2013 SUPERSEDING MIL-PRF-1/148D 23 January 2007 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, THYRATRON TYPE C6A This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the electron tube described her
2、ein shall consist of this specification sheet and MIL-PRF-1. DESCRIPTION: Triode, xenon gas. See figure 1. Mounting position: Base down. Weight: 6 ounces nominal (170.1 grams). ABSOLUTE RATINGS: Parameter: Ef Ep epx epy Ib ib t tk TA F Unit: V ac V ac v v A dc a Minutes sec C Hz Maximum: 2.75 - 600
3、300 6.4 77 - 40 70 380 Minimum: 2.25 - - - - - - - -55 54 Test conditions: 2.5 110 - - 6.4 - 3 - - 60 (Note 1) 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 Inactive for new de
4、sign after 7 March 1997. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/148E 2 FIGURE 1. Outline drawing of electron tube type C6A. Letter Dimensions Minimum Maximum Inches mm Inches mm Conformance inspection, part 2 A 10.56 268.22 11.57 2
5、93.88 B 2.12 53.85 2.38 60.45 Conformance inspection, part 3 (see note) C 1.90 48.26 2.10 53.34 D - - 1.63 41.40 E 1.10 27.94 1.14 28.96 F .26 6.60 .30 7.62 G 1.00 25.40 1.07 27.18 H .93 23.62 1.00 25.40 J .09 2.29 .13 3.30 K .21 5.33 .29 7.37 L .40 10.16 .47 11.94 M .37 9.40 .40 10.16 N Base: Mogul
6、 screw, G2-3 (EIA) P Cap: Porcelain with anode prong marked “a“ and grid prong “g“. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/148E 3 TABLE I. Testing and inspection. Requirement or test MIL-STD-1311 method Notes Conditions Symbol Limi
7、ts Unit Min Max Conformance inspection, part 1 Operation Heater current AC starting voltage Average arc drop Peak forward voltage Grid current Peak emission by voltage drop 3206 3241 - - - 3216 1231 - - 4 5 6 - - Rg = 10,000 ohms Ecc = 3 V dc; Rg = 1,000 ohms Ecc = 3 V dc; Rg = 1,000 ohms Rg = 1,000
8、 ohms Rg = 1 Meg Grid connected to anode through 10,000 ohms; ib = 77 a Ecc If Ep Etd Ecc Ic etd 1.35 16 - - - - - -2.7520 43 10.5 -5.3 5.0 45 V dc A ac V ac V dc V dc A dc v Conformance inspection, part 2 No-load operation - 7, 8 Ep = 0; t = 100 hours - - - - Conformance inspection, part 3 Life-tes
9、t Life-test end points: Peak emission by voltage drop Operation Grid current Low-frequency vibration Shock Cold starting - - 1231 3206 3216 1031 1041 - - - - - 2, 9 9 2, 3, 9 Group D; operation; t = 500 hours Hammer angle = 24; Ef = 2.5 10% - etd Ecc Ic - - - - - +1.35 - - - - - 67 -2.75 5 - - - - v
10、 V dc A dc - - - See notes at top of next page. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/148E 4 NOTES: 1. The following circuit conditions shall apply for all tests: a. Anode and grid circuit returns to center tap of secondary of fil
11、ament transformer. b. Filament transformer terminals phased so that tip of mogul base is positive relative to shell and when anode is positive. 2. Characteristics shall be within specified limits. 3. Apply rated filament and anode voltage simultaneously for a 3-minute period with the load at 1.0 amp
12、ere dc and then allow the tube to cool for 15 minutes. This application shall be repeated 500 times. 4. The anode voltage shall be lowered until the tube cuts off. The anode voltage at the instant after the tube cuts off shall be within the limit specified. 5. Measure power loss in the tube with a w
13、attmeter. The power loss divided by the anode current (in amperes, as measured on a dc meter) shall be within the limit specified. 6. The anode voltage shall be increased to 210 V ac, with the anode current held at a value not greater than 6.4 A dc. The grid bias shall be increased in a negative dir
14、ection until the tube cuts off, and shall be within the limit specified. 7. After no-load operation, tubes shall be within specification limits for operation and grid current. In the operation test, the time of operation shall be a minimum of 30 seconds and a maximum of 120 seconds. 8. The maximum p
15、eak forward voltage shall not shift more than 120 volts. 9. This test shall be performed according to the life testing schedule given in MIL-PRF-1 paragraph 4.3.8. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/148E 5 Referenced documents.
16、 In addition to MIL-PRF-1, this document references the following: 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 assumes no liability whatsoever for an
17、y 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: Army - CR DLA - CC Navy - EC Air Forc
18、e - 85 (Project 5960-2013-010) DLA - CC Review activities: Army - AR 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.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
