1、 MIL-E-1/63C 17 September 2013 SUPERSEDING MIL-E-1/63B 11 May 1970 MILITARY SPECIFICATION SHEET ELECTRON TUBES, RECEIVING TYPES 12SN7GT AND 12SX7GT Inactive for new design after 21 July 1997. This specification is approved for use by all Departments and Agencies of the Department of Defense. The req
2、uirements for acquiring the electron tube described herein shall consist of this specification sheet and MIL-PRF-1. DESCRIPTION: Twin triode, medium Mu Outline: 9-11 or 9-41 (EIA) Base: B8-6, B8-46, B8-58, or B8-251 6/ Envelope: T9 Cathode: Coated unipotential Base connections: Pin No. 1 2 3 4 5 6 7
3、 8 Element 2g 2a 2k 1g 1a 1k h h ABSOLUTE RATINGS: Parameter: Ef Eb Ec Ik/k Pp/a Ehk Alt Unit: V Vdc Vdc mAdc W v ft Maximum: 13.8 330 - 20 2.75 100 (See note 4) Minimum: 11.4 28 - - - - Test conditions: 12.6 250 -8 - - - - GENERAL: Qualification Required This specification sheet uses accept on zero
4、 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 without license from IHS-,-,-MIL-E-1/63C 2 TABLE I. Testing and inspection. Requirement or test MIL-STD-1311 Conditions Symbol Limits Unit Metho
5、d Min Max Conformance inspection, part 1 Total grid current 1266 1/ 2/ Ic 0 -2.0 Adc Transconductance (1) 1306 3/ Sm 2,075 3,125 mhos Transconductance (3) Type 12SX7GT 1306 Eb=28 Vdc;Ec=0; Rg=0.05 Meg 3/ 5/ Sm 1,400 2,200 mhos Audio frequency noise 1246 Esig=70 mVac; Rp=10,000 ohms 1/ EB - 17 vu Emi
6、ssion 1231 Eb=Ec=30 Vdc 2/ 3/ Is 40 - mAdc Short and discontinuity detection 1201 - - - - Electrode current (1) (anode) 1256 3/ Ib 5.5 12.5 mAdc Conformance inspection, part 2 Low-frequency vibration 1031 Rp= 2,000 ohms 1/ Ep - 150 mVac Heater current 1301 If 275 325 mA Heater-cathode leakage 1336 1
7、/ Ihk 0 30 Adc Transconductance (2) 1306 Eb=90 Vdc; Ec= 0 3/ Sm 2,400 3,600 mhos Electrode current (2) (anode) 1256 Ec= -24 Vdc 3/ Ib 0 20 Adc Amplification factor 1316 3/ Mu 18 23 - Secureness of base, cap, or insert 1101 - - - - Permanence of marking 1105 - - - - Insulation of electrodes 1211 R 10
8、 - Meg Conformance inspection, part 3 Life-test provisions - Group A: Ehk=100 V 1/ - - - - Life-test end point (500 hours) - Transconductance (1) Sm 1,550 - mhos See notes at end of table. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-E-1/63C 3
9、 NOTES: 1/ Test units connected in parallel. 2/ This test to be performed at the conclusion of the holding period. 3/ Test each unit separately. 4/ See “Reduced pressure (altitude) rating”, and altitude, maximum peak voltage. 5/ Grid resistor shall be properly by-passed. 6/ With the use of Base B8-2
10、51, paragraph 3.5.3 of MIL-PRF-1 shall not apply. Referenced documents. 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 con
11、venience 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 irrespective of the marginal notations and relationship to the last previous issue
12、. Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5960-2013-022) DLA - CC Review activities: Army - AR, CR4, MI 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-,-,-
