Tektronix 502A

Parts List — Type 502A
ELECTRICAL PARTS LIST
Values are fixed unless marked Variable.
Tektronix
Ckt. No. Part Number
Description
Bulbs
S/N Range
B 1 24 150-027
Neon, Type NE-23
READY
B 1 67 150-027 Neon, Type NE-23
B331 M 150-027
Neon, Type NE-23
ON
B331 N
150-027
Neon, Type NE-23
UNCALIBRATED
B490 150-027 Neon, Type NE-23
B601 150-001
Incandescent, Type #47
Graticule Light
B602
150-001
Incandescent, Type #47
Graticule Light
Capacitors
Tolerance ±20% unless otherwise indicated.
Tolerance of all electrolytic capacitors are as follows (with exceptions):
3 V — 50 V
= -10%, +250%
51 V -
350 V
= -10%, +100%
351 V - 450 V = -10%, +50%
C10
283-002
.01 f Disc Type
500 v
C 11
283-000 .001 f Disc Type
500 v
C 1 3
283-001
.005 f Disc Type
500 v
C24
283-000
.001 f Disc Type
500 v
C31 285-510
.01 f
MT
400 v
C44
281-510
22 pf Cer.
500 v
C 1 31
281-510
22 pf
Cer.
500 v
C 1 37 281-503
8 pf Cer.
500v
±.5 pf
C 1 41
281-541
6.8 pf Cer.
500 v
10%
C160A
281-007
3-12 pf
Cer.
Var.
C160B
283-534
82 pf
Mica
500 v
5%
C160C
281-010
4.5-25 pf
Cer.
Var.
C160D
*291-008
.001 f
± ’ / 2 %
C160E
.01 f
.
C160F
*291 -007
.1 f
Timing Series
± ’ / 2 %
C160G
1 f
Cl 67 283-000
.001 f Disc Type
500 v
C180A
281-528
82 pf
Cer.
500 v
10%
C180B
285-501
.001 f
MT
600 v
C180C
285-510
.01 f
MT
400 v
C180D
285-526
.1 f
MT
400 v
C181
281-528
82 pf
Cer.
500 v
10%
C311
281-010
4.5-25 pf
Cer.
Var.
C312
281-521
56 pf
Cer.
500 v
10%
C350
283-001
.005 f
Disc Type
500 v
X21070-up
6-21