DLA MIL-PRF-1 66C-1999 ELECTRON TUBE CATHODE RAY TYPE 7BP7A.pdf

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1、I INCH-POUND I MIL-PRF-1166C Parameter: Unit: Maximum : Minimum: Test conditions 6 Julv 1999 SUPERSEDING Ef Ecl Ec2 Ebl Ehk Rgl Alt 6.9 O 770 8,800 -125 note 1 10,000 V Vdc Vdc Vdc Vdc Meg ft _ _ 5.7 -1 80 _ 4,000 - - - _ _ 63 Ad 250 4000 - MIL-E-1166B 14 January 1975 PERFORMANCE SPECIFICATION SHEET

2、 ELECTRON TUBE, CATHODE RAY TYPE 7BP7A This specification is approved for use by all Depart- ments and Agencies of the Department of Defense. The requirements for acquiring the electron tube described herein shall consist of this document and the latest issue of MIL-PRF-I. GEN ERAL: Qualification -

3、Required. See note 2 AMSC NIA 1 Of5 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. FSC 5960 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1166C TABLE 1. Testins and inspection. Inspection Qualification ins

4、pection Neck and bulb alignment (magnetic types) Face tilt Cathode illumination Direct-interelectrode capacitance Pressure (implosion) Vi bration Base material insulating quality Conformance inspection, Voltage breakdown Voltage breakdown (magnetic types) Gas ratio Neck straightness Bulb, screen, an

5、d faceplate quality Modulation Spot position (magnetic deflection) Zero bias anode current (magnetic deflection) Grid cutoff voltage Grid No. 1 leakage current Aperture alignment Method 5101 5101 521 6 1331 1141 5111 1216 5201 5201 5206 5101 5106 5223 5231 5236 5241 5251 _ Notes Conditions Cathode t

6、o all Control grid to all Grid No. 2 to all Zone 5, minimum Ib = 200 pA dc Symbol Unit See notes at end of table. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1166C TABLE I. Testinq and inspection - Continued Inspection Conformance inspe

7、ction, u Heater current Electrode current (grid No. 2) Side terminal and base alignment Stray light emission (conventional types) Screens Line width A Line width C Focusing ampere turns Heater-cathode leakage current Grid No. 2 leakage current Secureness of base, cap or inseri Base pin solder depth

8、Permanence of marking Conformance inspection, w Life test Life-test end points: Line width A Line width C Modulation Method 1301 5201 51 O1 521 6 5221 5226 5226 5246 5251 5251 1101 1111 1105 _ _ 5226 5226 5223 Notes Conditions Ecl =O Pin No. 5 Eb = 8,800 V dc; Ec2 = 770 V dc Ib = 200 pA dc Ib = 200

9、pA dc Ib = 200 pA dc D = 2.75 inches Group C; Eb = 8,800 V dc; Ec2 = 770 V dc; Ib = 60 pA dc; t = 500 hours (minimum) Ib = 200 pA dc Ib = 200 pA dc Ib = 200 pA dc Symbol _ Width Width AEcl Limits Max 660 50 _ _ _ 0.65 0.75 459 _ _ _ _ _ 0.75 0.85 38 Unit _ mm mm V dc See notes at end of table 3 Prov

10、ided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1166C TABLE I. Testinq and inspection - Continued NOTES: 1. When Ec2 is greater than 330 V dc, Rgl shall not exceed 0.5 Meg. When Ec2 is less than 330 V dc, Rgl shall not exceed 1.5 Meg. 2. A limiti

11、ng aperture type of gun shall be used. The amount of limiting permitted shall be between 15 percent and 45 percent when Ib = 200 pA dc and the secondary electron current from the screen to the limiting aperture is zero. 3. The distance between the center of the unfocused, undeflected spot at low int

12、ensity (Ecl near cutoff) and the center of the image of the masking aperture observed at high intensity of the unfocused, undeflected spot shall not exceed the limit specified. Ecl should not be held at zero for more than approximately 30 seconds to prevent damage to the screen. 4. This test to be p

13、erformed at the conclusion of the holding period 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-1166C Ltr r 1 Millimeters Inches Min I Max I Min I Max NC k NOTES: 1. 2. 3. 4. The minimum useful screen radius shall not be less than 3.00 inc

14、hes (76.20 mm). The bulb shall be a J56D or J56R type. Applies to entire length of neck below reference line. The reference line is determined by point where gage 1.430 f. 003 inches (36.32 f 0.08 mm) inside diameter and 2 inches (50.80 mm) in length will stop against bulb body. The base shall be a

15、medium shell octal 8-pin (B8-1 1) type or a medium long shell octal 8-pin type (this is identical with the medium shell octal 8-pin type except that the shell is 1.375 inches (34.93 mm) high nominal) or a small wafer octal with sleeve 8-pin (B8-26) type. Reference dimensions are for information only

16、 and are not required for inspection purposes. 5. FIGURE 1. Outline drawinq for electron tube tvpe 7BP7A Custodians: Army - CR Navy - EC Air Force - 11 DLA - CC Preparing activity: DLA - CC (Project 5960-3470) Review activities: Army - CR4 Navy -AS, CG, MC, OS, SH Air Force - 17, 99 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-