PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, RECEIVING TYPE 8233

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1 INCH-POUND MIL-PRF-1/1593E 15 Augus 2012 SUPERSEDING MIL-PRF-1/1593D 17 Augus 2004 DESCRIPTION: Penode, sharp cuoff. Ouline: See figure 1. PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, RECEIVING TYPE 8233 This specificaion is approved for use by all Deparmens and Agencies of he Deparmen of Defense. The requiremens for acquiring he elecron ube described herein shall consis of his documen and he laes issue of MIL-PRF-1. Base: E9-23. Envelope: T9. Cahode: Coaed unipoenial Base connecions: Pin No Elemen a g3 g2 h h g3 k g1 k ABSOLUTE MAXIMUM RATINGS: Parameer: Ef Ebb Eb Ecc2 Ec2 Ec3 Ecc1 Ec1 egk Uni: V V dc V dc V dc V dc V dc V dc V dc v Maximum: , Minimum: Tes condiions: ABSOLUTE MAXIMUM RATINGS: Parameer: Ehk Rk Rg1 Ik Pg2 Pp TE Al Uni: v Ohms MegΩ ma dc W W C f Maximum: ,000 Minimum: Tes condiions: See foonoes a end of able I. GENERAL: Qualificaion: No required. AMSC N/A FSC 5960

2 TABLE I. Tesing and inspecion. Inspecion Mehod Noes Condiions Symbol Limis Uni MIL-STD / Min Max Conformance inspecion, par 1 Heaer curren 1301 If ma dc Heaer-cahode leakage 1336 Ihk 15 Toal grid curren 1266 Ic Elecrode volage (grid 1) / Ec V dc Elecrode curren (screen) 1256 Ic2 7.0 ma dc Transconducance (1) Sm 38,000 52,000 µmhos Elecrode curren (anode) 1256 Ec1= -6 V dc; Eb = 125 V dc; Ec2 = 125 V dc Ib 1.0 ma dc Shor and disconinuiy deecion 1201 egk = 110 v (max) Conformance inspecion, par 2 Insulaion of elecrodes 1211 E (g1 o all) = -50 V dc E (a o all) = -200 V dc Transconducance (2) Ef = 5.7 V Ef 10 Amplificaion facor / Mu Grid emission / Ef = 7.5 V; Ecc1 = -10 V dc; Rg1 = 0.1 MegΩ Direc-inerelecrode capaciance 1331 No shield Ic Cin Cou Cgp pf pf pf Baromeric pressure, reduced 1002 Pressure = 55 ± 5 mmhg; volage = 300 V ac High-frequency vibraion 1031 Rp = 2,000 ohms; Rk = 56 ohms, unbypassed; Rg = 20,000 ohms; Cg2 = 25 µf; Ebb = Ecc2 = 225 V dc; Ec1 = 0 F = 50 Hz Ep 50 mv ac See foonoes a end of able. 2

3 TABLE I. Tesing and inspecion - Coninued. Inspecion Mehod Noes Condiions Symbol Limis Uni MIL-STD / Min Max Conformance inspecion, par 2 - Coninued Shock / 450 G; no volages applied Vibraion-faigue / Shock and vibraionfaigue-es end poins: High-frequency vibraion 1031 Rp = 2,000 ohms; Rk = 56 ohms, unbypassed; Rg2 = 20,000 ohms, Cg2 = 25 µf; Ebb = Ecc2 = 225 V dc; Ec1 = 0; F = 50 Hz Ep 100 mv ac Heaer-cahode leakage 1336 Ihk 25 Toal grid curren 1266 Ic Change in ransconducance (1) of individual ubes 20 Envelope srain 2126 Permanence of marking 1105 Conformance inspecion, par 3 Heaer-cycling life 1506 Ef = 7.5 V; Ehk = 140 V ac; Ec1 = Ec2 = Eb = 0 Heaer-cycling life-es end poin: Heaer-cahode leakage 1336 Ihk 25 Sabiliy life 1516 Ehk = -200 V dc; Rg1 = 0.1 MegΩ; TA = room See foonoes a end of able. 3

4 TABLE I. Tesing and inspecion - Coninued. Inspecion Mehod Noes Condiions Symbol Limis Uni MIL-STD / Min Max Conformance inspecion, par 3 - Coninued Sabiliy life-es end poin: Change in ransconducance (1) of individual ubes 10 Inermien life / Ehk = -200 V dc; Rg1 = 0.1 MegΩ Inermien life-es end poins (500 hours) 7/ Toal grid curren Heaer curren Change in ransconducance (1) of individual ubes Transconducance (2) Heaer-cahode leakage Insulaion of elecrodes Transconducance (1), average change Ef = 5.7 V E (g1 o all) = -50 V dc E (a o all) = -200 V dc Ic1 If Ef Ihk Avg ma Inermien life-es end poins (1,000 hours) 8/ Toal grid curren Change of ransconducance (1) of individual ubes Heaer-cahode leakage Insulaion of elecrodes E (g1 o all) = -50 V dc E (a o all) = -200 V dc Ic1 Ihk See foonoes a op of nex page. 4

5 TABLE I. Tesing and inspecion - Coninued. 1/ This volage shall be read wih a high-impedance volmeer conneced beween grid and cahode. 2/ The screen grid shall be uilized as he anode (oupu is in screen grid circui). Anode volage = 136 V dc. 3/ Prior o his es, ubes shall be preheaed 5 minues a he condiions indicaed below. The 3-minue es is no permied. Tes a specified condiions wihin 3 seconds afer preheaing. Grid emission shall be he las es performed on he sample seleced for grid emission es. Ef Ebb Ecc2 Ecc1 Rg1 Rk V V dc V dc V dc MegΩ Ohms / This es shall be conduced on he iniial lo and hereafer on a lo approximaely every 12 monhs. When one lo has passed, he 12-monh rule shall apply. In he even of lo failure, he lo shall be rejeced and he succeeding los shall be subjeced o his es unil a lo passes (see 5/). 5/ This specificaion shee uses accep on zero defec sampling in accordance wih MIL-PRF-1, able III. 6/ The life-es sample shall consis of 20 ubes per lo and no ube failures shall be permied. In he even of rejecion of he firs sample, a second sample of 40 ubes shall be seleced from he lo. Accepance shall hen be based on he combined firs and second samples and shall no exceed a oal of wo ube failures. 7/ No defecives per characerisic shall be allowed for he firs sample. Toal defecives shall be no greaer han 1 for combined samples. 8/ No defecives per characerisic shall be allowed for he firs sample. Toal defecives shall be no greaer han 2 for combined samples. 9/ Marginal noaions are no used in his revision o idenify changes wih respec o he previous issue, due o he exensiveness of he changes. 5

6 Dimensions Lr Inches Millimeers Min Max Min Max A DIA DIA B C D DIA DIA E F G.0485 DIA.0530 DIA DIA DIA H 36 TYP 36 TYP J.682 DIA.692 DIA DIA DIA NOTES: 1. Dimensions are in inches. 2. Meric equivalens are given for general informaion only and are based on 1 inch = 25.4 mm. 3. The minimum measuremen should be made in he area included beween.375 inch (9.53 mm) from he boom of bulb o he op of bulb body. FIGURE 1. Ouline drawing of elecron ube ype

7 Referenced documens. In addiion o MIL-PRF-1, his specificaion shee references MIL-STD The margins of his specificaion are marked wih verical lines o indicae where changes from he previous issue were made. This was done as a convenience only and he Governmen assumes no liabiliy whasoever for any inaccuracies in hese noaions. Bidders and conracors are cauioned o evaluae he requiremens of his documen based on he enire conen irrespecive of he marginal noaions and relaionship o he previous issue. Cusodian: Preparing aciviy: Army - CR DLA - CC Navy - EC Air Force - 85 (Projec ) DLA - CC Review aciviies: Army - CR4 Navy - AS, CG, MC, OS, SH Air Force - 19, 99 NOTE: The aciviies lised above were ineresed in his documen as of he dae of his documen. Since organizaions and responsibiliies can change, you should verify he currency of he informaion above using he ASSIST Online daabase a hps://assis.dla.mil/. 7

PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, NEGATIVE GRID (MICROWAVE) TYPE 8727

INCH-POUND MIL-PRF-1/1657E 30 September 2009 SUPERSEDING MIL-PRF-1/1657D 1 October 2003 DESCRIPTION: Triode, pencil, ceramic-metal. See figure 1. PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, NEGATIVE