MIL-PRF-1/7J
TABLE I. Inspection tests.
Limits
MIL-STD-
Unit
1311
Requirement or test
Conditions
Acceptance
Symbol
method
level
(see note 11)
Min
Max
Conformance inspection,
part 1
1301
Heater current
0.4
If
275
325
mA
μA dc
1336
Heater-cathode leakage
See note 3
0.4
Ihk
---
5
1353
Operation of rectifiers
See notes 4 and 5
0.4
Io
16.0
20.0
mA dc
1231
Emission (1)
Eb = 10 V dc
0.4
Is
40
---
mA dc
(see notes 3 and 5)
1201
Short and discontinuity
0.4
---
---
---
---
detection
Conformance inspection,
part 2
1211
Insulation of electrodes
E(a-all) = -300 V dc
MegΏ
E(sd-all) = -300 V dc
2.5
R
200
---
(see note 3)
ΔIs
1231
Emission (2)
See notes 3 and 6
2.5
---
15
%
Ef
μA dc
1256
Electrode current (anode)
Ebb = 0; Rp = 40,000 ohms
2.5
Ib
2
20
(see note 3)
μA dc
---
Electrode current (anode)
Ebb = 0; Rp = 40,000 ohms
2.5
Ib
---
5
(difference between diodes)
(see note 3)
---
Hum
Ef = 7.0 V ac
2.5
E
---
10
mV ac
(see note 7)
1331
Direct-interelectrode
Shield No. 316
capacitance
all measurements
1a to 2a
C
---
0.026
pF
1a to h + 1k + shields
C
2.4
4.0
pF
2a to h +2k + shields
6.5
C
2.4
4.0
pF
1k to h +1a + shields
C
3.1
4.7
pF
2k to h +2a + shields
C
3.1
4.7
pF
See notes at end of table.
2
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business