PRECISION
MIL Style RV8
Precision Series SPR -
1/2 Watt 1/8" shaft diameter
Precision series SPR/RV8 potentiometers are for PCB
applications requiring a rugged potentiometer.
FEATURES:
•
•
•
•
•
hot molded carbon element
board washable
stainless steel shaft
compact size
quality meeting or exceeding MIL-R-94 - QPL listed
OPTIONS:
•
•
•
•
custom shafts and bushings
special tapers
customer specified marking
location tab position
ELECTRICAL SPECIFICATIONS:
Resistance range, linear taper:
100
Ω
to 5 Meg
Ω
Resistance range, logarithmic taper:
150
Ω
to 1 Meg
Ω
Resistance tolerance:
±10% or ±20%
Resistance taper:
linear, logarithmic, reverse logarithmic;
other tapers by special order
Power rating:
0.5 watts at 70°C derated to 0 watts at 120°C
Insulation resistance:
dry:
10K Meg
Ω
wet:
100K Meg
Ω
Dielectric strength:
750 V RMS at sea level
Operating voltage:
350 V, subject to power rating
MECHANICAL SPECIFICATIONS:
Mechanical rotation:
295°
Operating torque:
0.5 oz/in to 6 oz/in
Rotational life:
25,000 cycles
ENVIRONMENTAL SPECIFICATIONS:
Operating temperature:
−
65°C to +125°C
Resistance to soldering heat:
350°C for 5 seconds
Humidity range:
per MIL-R-94
Vibration range:
per MIL-R-94
Shock resistance:
per MIL-R-94
Load life:
1000 hours at 70°C
PRECISION
MIL Style RV8
ORDERING INFORMATION:
Ordering Information - Commercial Part Numbers
Series
SPR
= series SPR
Bushing
Bushing
Length
Blank
=
Blank
= 1/4"
standard
6
= 3/8"
L
= locking
W
= panel &
shaft seal
Taper
U
= linear
A
=
logarithmic
B
= reverse
logarithmic
Resistance Value
Total resistance value in
Ω:
first 2 digits significant,
third digit = number of
zeroes
Tolerance Shaft Style
1
= 10% of
R
= round
nominal
S
= slotted
2
= 20% of
F
= flatted
nominal
Shaft
Length
16
= 1/2"
20
= 5/8"
24
= 3/4"
28
= 7/8"
32
= 1"
Example: SPRU2521R20
note:
not all part number combinations are valid
Ordering Information - Military Part Numbers
Temperature & Moisture
Characteristics
Y
= as per MIL-R-94
Shaft
Length
L
= 3/8"
B
= 1/2"
A
= 5/8"
D
= 7/8"
Style
RV8
= MIL style RV8
Bushing
N
= standard
L
= locking
S
= panel &
shaft seal
Switch
A
= without
switch
Shaft Style
S
= slotted
F
= flatted
Resistance Value
Total resistance value
in
Ω:
first 2 digits
significant, third digit =
number of zeroes
Taper & Tolerance
A
= linear 10%
B
= linear 20%
C
= logarithmic 10%
D
= logarithmic 20%
E
= reverse logarithmic
10%
F
= reverse logarithmic
20%
Example: RV8NAYSD252A
note:
not all part number combinations are valid
Series SPR Cross Reference
Precision
SPR
SPRL
Military
RV8NAY
RV8LAY
Clarostat
392
392
Allen Bradley
W or G
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