INCH POUND
MIL-PRF-1/28H
22 July 1997
SUPERSEDING
MIL-E-1/28G
3 December 1970
PERFORMANCE SPECIFICATION SHEET
ELECTRON TUBE, PHOTOMULTIPLIER
TYPE 1P21
This specification is approved for use by all Departments
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-1.
DESCRIPTION: 9-stage, side-on, S4 spectral response
DIMENSIONS AND PIN CONNECTIONS: See figure 1
ABSOLUTE-MAXIMUM RATINGS:
Parameter:
Ebb
Eb-Edy9
Light
Light
Ib
ib
TA
Rp
Pp
Cathode
Shock
Alt
Source
area
Unit:
V dc
V dc
---
mA
ma
Ohms
W
Lighted
G
ft
C
m
dc
sq cm
Maximum:
1,250
250
---
0.1
1.0
75
Note 3
0.25
---
200
40,000
(Note 20)
(Note 20)
Test
1,000
100
LS1
10
---
---
---
10,000
---
0.8
---
---
Conditions:
(Note 1)
(Note 2)
(Note 4)
GENERAL:
Qualification - Required
AMSC N/A
Page 1 of 6
FSC 5960
DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited.