Model: ST18S182

Non Wire Wound Variable Resistor

Special Features:

Sections 1-3 are precision variable resistors and section 4 is not

Properties:

Section Quantity
4
Body Style
Cylindrical servo mounted
Reliability Indicator
Not established
Pilot Diameter
Between 1.5610 inches and 1.5620 inches
Pilot Length
0.0620 inches
Undercut Diameter
Between 1.561 inches and 1.562 inches
Undercut Width
0.0730 inches
Body Diameter
1.750 inches
Shaft Diameter
Between 0.2494 inches and 0.2499 inches
Shaft Length
Between 0.718 inches and 0.782 inches
Body Length
2.681 inches
Mounting Lip Diameter
1.7500 inches
Mounting Lip Depth
0.0930 inches
Shaft Style
Round
Shaft Bearing Type
Ball
Actuator Type
Single shaft
Effective Electrical Rotation In Deg Angular Rotation
Between 335.0 and 337.0
Maximum Starting Torque
0.70 inch-ounces
Maximum Running Torque
0.60 inch-ounces
Shaft End Play
0.005 inches
Shaft Runout
0.001 inches
Lateral Runout
0.002 inches
Pilot Diameter Runout
0.001 inches
Shaft Radial Play
0.001 inches
Fragility Factor
Moderately rugged
Terminal Location
Radially positioned over less than half the circumference
Mounting Method
Clamp ring
Features Provided
Humidity proof
Electrical Resistance Per Section
125.0 percent, rated amperes c and better finish
Electrical Resistance Per Section
200.0 percent, rated amperes c and better v.G. Stepping
Electrical Resistance Per Section
50.0 percent, rated amperes c and better industrial clears
Electrical Resistance Per Section
50.0 percent, rated amperes c and better select
Rotary Actuator Travel In Angular Deg
360.0
Function Conformity Tolerance Per Section
-0.25/+0.25 2nd section
Function Conformity Tolerance Per Section
-0.25/+0.25 3rd section
Function Conformity Tolerance Per Section
-0.50/+0.50 1st section
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
90.0 all sections
Tempurature Coefficient Of Resistance Per Section In Ppm Per Deg Celsius
-20.0/+20.0 all sections
Power Dissipation Rating Per Section In Watts
2.5 free air all sections
Function Conformity Per Section
2nd section independent linearity
Function Conformity Per Section
3rd section independent linearity
Function Conformity Per Section
1st section independent linearity
Fixed Tap Quantity Per Section
1 all sections
Resistance Tolerance Per Section In Percent
-5.0/+5.0 all sections
Actuator Travel Control Feature
Continuous motion
Function Characteristic Per Section
10 oclock all primaries
Function Characteristic Per Section
8 oclock all primaries
Function Characteristic Per Section
9 oclock all primaries
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
60.0 all sections
Standard Taper Curve Per Section
A 4th section
Terminal Type And Quantity
16 tab, solder lug
NSN
5905-00-889-5538
Part Number
ST18S182
Description
Resistor,variable,wire Wound,non
CAGE
99957

A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity), if given, of the output is greater than plus of minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see resistor, adjustable. For items with step by step variation, see rheostat and resistor, step by step. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see attenuator, variable. Excludes resistor (1), variable, nonwire wound, nonprecision; resistor (1), variable, nonwire wound, precision; and resistor (1), variable, wire wound, precision.

Part ST18S182 NSN 5905-00-889-5538

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37406
FIIG:
A002A0
Concept No.:
1
App. Key:
A
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
B
ESD:
B
MMAC:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.8000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
03
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062960
UFC:
35140
LTL:
77.5
LCL:
--
WCC:
72D
TCC:
3
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8533390080
  • SITC: 77233
  • End Use: Electric apparatus
  • NAICS: 334416
  • USDA: 1

Freight Class: Wirewound variable resistors, nesoi

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