1、AMSC N/A FSC 5960 MIL-PRF-1/597F 26 May 2009 SUPERSEDING MIL-PRF-1/597E 16 February 1999 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, PHOTOMULTIPLIER TYPE 931VA This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the
2、 electron tube described herein shall consist of this specification sheet and MIL-PRF-1. DESCRIPTION: 9-stage, side-on, S4 spectral response. DIMENSIONS AND PIN CONNECTIONS: See figure 1. ABSOLUTE RATINGS: Parameter: Ebb Eb-Edy9 Light source Light lb TA Rp Cathode area Shock Alt Unit: V dc V dc - lm
3、 mA dc C Ohms Lighted sq cm G ft Maximum: 1,250 (notes 1 and 19) 250 (notes 2 and 19) - - 1.0 (note 10b) 75 note 3 - 200 40,000 Test conditions: 1,000 100 LS1 10-5 - - 10,000 0.8 - - GENERAL: Qualification - Not Required. INCH-POUND Provided by IHSNot for ResaleNo reproduction or networking permitte
4、d without license from IHS-,-,-MIL-PRF-1/597F 2 TABLE I. Testing and inspection. Inspection Method MIL-STD-1311 Notes Conditions Acceptance Level 20/ Symbol Limits Min Limits Max Units First Article Inspection Low-frequency (25 Hz) vibration 1031 4 No voltages; t=60 minutes - - - - - Direct-interele
5、ctrode capacitance (1) 1331 8 - C 2.0 6.0 pF Direct-interelectrode capacitance (2) 1331 9 - C 3.5 9.5 pF Low-pressure breakdown - 12,13, 14 Ebb =1,250 V dc Eb to Edy9 =125 V dc; voltages for all other stages=125 V dc per stage; Rp = 1 Meg; t = 12 - - - - - Spectral response identification 5303 - S4
6、- - - - - Base material insulating quality 1216 - - - - - - Conformance inspection, part 1 18 Cathode current - 5, 6 Light = 0.01 lm - lk 0.06 - A dc Dark current (1) 5301 - Light = 0 - Llk - 5.0 A dc Dark current (2) 5301 5, 15 - Llb - 0.05 A dc Anode current 5301 5 - lb 45 - A dc Amplification - -
7、 Amplification= lb(A/lm) lk(A/lm) - Mu 75,000 - - Dark current (3) 5301 7 Light=0 - Llb - 5.0 A dc Conformance inspection, part 2 Secureness of base, cap or insert 1101 11 - - - - - Shock 1041 16, 17 200 G 10%; no voltages applied - - - - - Base pin solder depth 1111 - - - - - - Permanence of markin
8、g 1105 - - - - - - See footnotes at end of table. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/597F 3 TABLE 1. Testing and inspection - Continued. Inspection Method MIL-STD-1311 Notes Conditions Acceptance Level 20/ Symbol Limits Min Lim
9、its Max Units Conformance inspection, part 3 Life test - 10 Group C - - - - - Life-test end point: - Amplification - - - Mu 25,000 - - NOTES: 1. Overall anode to cathode dc supply voltage. 2. Anode to 9th dynode dc supply voltage. 3. An anode load resistance of at least 10,000 ohms is recommended fo
10、r a protective resistance. 4. Vibration test is to be performed prior to other qualification inspection tests. 5. Adjust tube position to give maximum sensitivity. The light during test, except during life test, shall be incident upon the aperture approximately 0.8 inch x 0.2 inch (20.32 mm x 5.08 m
11、m) located to center of the cathode. 6. Apply 100 volts between the cathode and all other pins tied together. 7. Apply Ebb according to the range of lb in the following table: Range lb 45 to 63 63 to 88 88 to 120 120 to 162 162 to 214 214 to 284 284 to 374 374 and greater Ebb 1,600 1,550 1,500 1,450
12、 1,400 1,350 1,300 1,250 8. Capacitance between anode and dy9, all other elements grounded. 9. Capacitance between anode and all other elements. 10. Life test. (a) Life test shall be made during a cycle of 6 hours on and 18 hours off. The life test duration of 500 hours shall consist of 21 cycles. T
13、he luminous flux at the cathode shall be adjusted initially and at the end of 15 minutes operation daily to give an anode current of 2.5 mA dc. Color temperature shall be greater than 2,000K. (b) Longer tube life may be expected when operating conditions require lower anode current. 11. Omit immersi
14、on in water and test dry. Apply torque test with 20.0 pound-inches minimum. 12. Test circuit and test equipment requirements. A bleeder network to provide equal voltage per stage; 8-Meg series resistance for cathode, and all dynodes excluding the last dynode (9th); 1-Meg series resistance for last d
15、ynode (9th) and anode; a regulated (0.1 percent) power supply with low-ripple (0.05 volts peak-to-peak maximum) as a voltage source; a sensitive dc microammeter to determine anode current; an oscilloscope, with a low-capacity divider, is connected across the anode load resistance (1-Meg) to monitor
16、noise and breakdown; base pins of photomultiplier under test connected so that the degradation of breakdown characteristic is minimized; a vacuum pump, low-pressure chamber and manometer; a light source with an adjustable iris and sand-blasted glass. Provided by IHSNot for ResaleNo reproduction or n
17、etworking permitted without license from IHS-,-,-MIL-PRF-1/597F 4 Test method. Mask tube with light-proof material. The light-source should be located so that light from it is striking the cathode of the photomultiplier. (Light from the light source should be the only light striking the cathode.) Th
18、e opening of the iris is varied to obtain approximately 10 microamperes of anode current. Observe the tube noise signal as displayed by the oscilloscope. Reduce pressure of vacuum chamber to 130 millimeters of mercury. The tube should be subjected to this pressure for a period of 2 minutes. During p
19、ressure reduction, the tube noise signal, as displayed by the oscilloscope, should be observed to determine tube breakdown. When breakdown occurs, the signal being monitored by the oscilloscope will resemble the following: When continuous breakdown occurs, a change in anode current will result. 13.
20、Vary light to obtain approximately 10 microamperes of anode current. 14. The tube shall operate without indication of breakdown in an evacuated chamber in which the pressure does not exceed 130 mmHg absolute. 15. With 10-5lumen incident on the cathode, vary the overall voltage (Ebb) to obtain an ano
21、de current of 200 A dc. Exclude light and read the dark current. 16. The clamp shall be as specified in Drawing 216-JAN. 17. After the socket test is performed, the tube shall meet the requirements of all the tests specified in conformance inspection, part 1. 18. All conformance inspection, part 1,
22、tests to be performed at the conclusion of the holding period. 19. An ac supply voltage may be used having a peak value equal to this maximum value. 20. This specification sheet uses accept on zero defect sampling in accordance with MIL-PRF-1, table III. Provided by IHSNot for ResaleNo reproduction
23、or networking permitted without license from IHS-,-,-MIL-PRF-1/597F 5 NOTES: 1. Centerline of bulb shall not deviate more than 2 in any direction from the perpendicular erected at center of bottom of base. 2. Dimensions B, E and F refer to the usable cathode area. FIGURE 1. Outline drawing for elect
24、ron tube type 931VA. Dimensions Ltr Inches Millimeters Min Max Min Max Qualification inspection C 3.125 79.38 E 0.312 7.92 F 0.937 23.80 Conformance inspection, part 2 A 1.187 30.15 B 1.843 2.031 46.81 51.59 D 3.687 93.65 Provided by IHSNot for ResaleNo reproduction or networking permitted without l
25、icense from IHS-,-,-MIL-PRF-1/597F 6 Referenced documents. In addition to MIL-PRF-1, this document references the following: MIL-STD-1311 JETEC DWG 216-JAN 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
26、 convenience 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 i
27、ssue. Custodians: Preparing activity: Army - CR DLA - CC Navy - EC Air Force - 85 (Project 5960-2009-003) Review activities: Navy - CG, MC, OS 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 http:/assist.daps.dla.mil. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
