1、 MIL-PRF-1/943E 19 January 2012 SUPERSEDING MIL-PRF-1/943D 23 July 1999 PERFORMANCE SPECIFICATION SHEET ELECTRON TUBE, PHOTOMULTIPLIER TYPE 5819 This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the electron tube descr
2、ibed herein shall consist of this document and the latest issue of MIL-PRF-1. DESCRIPTION: 10-stage, head-on, S11 spectral response. DIMENSIONS AND PIN CONNECTIONS: See figure 1. ABSOLUTE RATINGS: Parameter: Ebb Eb-Edy10 Light source Light Ib TA Rp Cathode area Alt Unit: V dc V dc - m mA dc C Ohms L
3、ighted sq. in. ft Maximum: 1,250 250 - - 0.75 75 3/ - 40,000 18/ 1/ 18/ 2/ Test conditions: 1,000 4/ 4/ LS1 10-5 - - 10,000 0.12 - See footnotes at end of table I. _ GENERAL: Qualification: Not required. Holding period (MIL-STD-1311): 336 hours. This specification sheet uses accept on zero defect sa
4、mpling 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-PRF-1/943E 2 TABLE I. Testing and inspection. Inspection Method Notes Conditions Symbol Limits Unit MIL-STD-1311 Min Max
5、First Article inspection Low-pressure breakdown - 4/ 17/ 19/ 20/ Ebb = 1,250 V dc; Eb to Edy10 = 18/; Rp = 1 Meg; t = 120 - - - - Direct-interelectrode capacitance (1) 1331 13/ C 2.7 5.7 pF Direct interelectrode capacitance (2) 1331 14/ C 5.0 8.0 pF Spectral response identification 5303 - S11 - - -
6、- Base material insulating quality 1216 - - - - - Conformance inspection, part 1 Cathode current - 21/ 6/ 7/ Light = 0.01 m Ik 0.40 - A dc Dark current (1) 5301 8/ LIb - 0.04 A dc Anode current 5301 6/ Rp = 10 K Ib 100 - A dc Dark current (2) 5301 10/ Light = 0 LIb - 5.0 A dc Blue sensitivity - 6/ 7
7、/ 11/ Ik 0.040 - A dc Signal-to-noise ratio 5306 12/ Light = 10-7m Rp = 0.1 Meg S/N 42 - dB Conformance inspection, part 2 Secureness of base, cap, or insert 1101 5/ - - - - Base pin solder depth 1111 - - - - - Permanence of marking 1105 - - - - - See footnotes at end of table. Provided by IHSNot fo
8、r ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/943E 3 TABLE I. Testing and inspection - Continued. Inspection Method Notes Conditions Symbol Limits Unit MIL-STD-1311 Min Max Conformance inspection, part 3 Life-test - 15/ Group D; t = 500 hours - - - - Life-tes
9、t end point: Anode current - 16/ - - - - 1/ DC supply voltage between anode and 10th dynode. 2/ Averaged over a period of 30 seconds maximum. Longer tube life may be expected when operating conditions require lower anode current. 3/ An anode load resistance of at least 10,000 ohms is recommended for
10、 a protective resistance. 4/ Overall supply voltage is across a voltage divider providing 16.67% of the voltage between cathode and dynode No. 1 and 8.33% of the voltage for each succeeding state including dynode No. 10 to anode. 5/ Omit immersion in water and test dry. Apply torque test with 40.0 p
11、ound-inches minimum. 6/ Light source shall be a projection lamp operated at 2,870K. Use a light aperture 0.172 inch x 0.70 inch (4.37 mm x 17.78 mm) centered with respect to the cathode. 7/ Apply 167 volts dc between cathode and all other pins tied together. 8/ With 10-5lumens incident on the cathod
12、e vary the overall voltage to give Ib = 200 A; exclude the light and read the dark current. 9/ Anode current ratio. In addition to Ib test at center of photocathode, check Ib at four places spaced 90 apart. The spots shall be exposed one at a time in such a manner that no overlap of outer spots exis
13、t (if all were exposed at the same time). The ratio between maximum and minimum anode currents (including center reading) will be the anode current ratio. Place aperture between light source and tube such that the outer spots (on the photocathode) will lie on a .875 inch .047 inch (22.23 mm 0.79 mm)
14、 diameter circle centered on the photocathode. The diameter of the outer spots on the photocathode shall be .50 inch (12.7 mm) 5 percent. All spots including center spot shall have equal area. 10/ Apply Ebb according to the range of Ib in the following table: Range Ib Overall supply voltage 100 to 1
15、60 160 to 240 240 and up 1,350 1,300 1,250 11/ With unfiltered light flux of 0.01 lumens, insert blue filter (Corning, Glass Code No. 5113 polished to one-half stock thickness, or equivalent) in place between the cathode and light source. Provided by IHSNot for ResaleNo reproduction or networking pe
16、rmitted without license from IHS-,-,-MIL-PRF-1/943E 4 TABLE I. Testing and inspection - Continued. 12/ For this test, the light source shall be a square wave modulated at 90 Hz. Diameter of the light spot shall be 1.25 inch (31.75 mm). Output of the tube shall be fed into a low-pass amplifier, the b
17、andwidth of which is 1,000 Hz. The amplifier output shall be read with a vu meter calibrated in dB. Amplifier attenuator is also calibrated in dB. Prior to testing, tubes shall be held at an ambient temperature of 75F 5F for not less than 1 hour in the dark. a. Signal: With light on, adjust attenuat
18、or so that vu meter is at zero. Read attenuator setting. b. Noise: Read as above with light off. c. S/N ratio = Signal (dB) - Noise (dB). 13/ Capacitance between anode and dynode No. 10, all other elements grounded. 14/ Capacitance between anode and all other elements. 15/ Ebb = 1,000 volts, adjust
19、luminous flux at the cathode initially to obtain Ib = 0.75 mA dc. Color temperature shall be greater than 2,000K. 16/ Life-test end-point is either an Ib of 20 A or a decrease of 5% of the initial Ib, whichever is reached first. 17/ Test circuit and test equipment requirements. A bleeder network to
20、provide 16.67% of the overall voltage between cathode and dynode No. 1 and 8.33% of the overall voltage for each succeeding stage; 8-megohm series resistance for cathode, and all dynodes excluding the last dynode (10th); 1-megohm series resistance for last dynode (10th) and anode; a regulated (0.1 p
21、ercent) 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-megohm) to monitor noise and breakdown; base pins of phot
22、omultiplier 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 sandblasted glass. Test method. Mask tube with light proof material. The light-source should be located so
23、that light from it is striking the cathode of the photomultiplier. (Light from the light source should be the only light striking the cathode.) The opening of the iris is varied to obtain approximately 10 microamperes of anode current. Observe the tube-noise signal as displayed by the oscilloscope.
24、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 pressure reduction, the tube noise signal, as displayed by the oscilloscope, should be observed to determine tube breakdown. When breakdown occurs, the sig
25、nal being monitored by the oscilloscope will resemble the following: When continuous breakdown occurs, a change in anode current will result. 18/ An ac supply voltage may be used having a peak value equal to this maximum value. Provided by IHSNot for ResaleNo reproduction or networking permitted wit
26、hout license from IHS-,-,-MIL-PRF-1/943E 5 TABLE I. Testing and inspection - Continued. 19/ Vary light to obtain approximately 10 microamperes of anode current. 20/ Tube shall operate without indication of breakdown in an evacuated chamber in which the pressure does not exceed 130 mmHg absolute. 21/
27、 All conformance inspection, part 1, tests to be performed at the conclusion of the holding period. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/943E 6 NOTES: 1. Diameter C refers to the cathode diameter. 2. Centerline of bulb shall not
28、deviate more than 2 in any direction from the perpendicular erected at center of bottom of base. 3. The base shall be a medium shell diheptal 14-pin base, B14-38. FIGURE 1. Outline drawing of electron tube types 5819. Dimensions Ltr Inches Millimeters Min Max Min Max First Article inspection C 1.688
29、 - 42.88 - E 3.000 R 76.20 R F 0.150 R 3.81 R Conformance inspection, part 2 A 5.375 5.875 136.53 149.23 B 4.625 5.125 117.48 130.18 D 1.938 2.063 49.23 52.40 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1/943E 7 Referenced documents. In a
30、ddition to MIL-PRF-1, this specification sheet references 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 any inaccur
31、acies 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 Force - 85 (P
32、roject 5960-2011-020) DLA - CC Review activities: Navy - AS, 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 https:/assist.daps.dla.mil/. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
