Model: 78WS338-1

Pre Wire Wound Variable Resistor

Properties:

Section Quantity
3
Body Style
Cylindrical servo mounted
Reliability Indicator
Not established
Pilot Diameter
0.7500 inches
Pilot Length
0.0620 inches
Overall Length
1.739 inches
Undercut Diameter
0.791 inches
Undercut Width
0.0620 inches
Body Diameter
0.875 inches
Shaft Diameter
0.125 inches
Shaft Length
0.259 inches
Body Length
1.480 inches
Overall Diameter
1.094 inches
Mounting Lip Diameter
0.8750 inches
Mounting Lip Depth
0.0620 inches
Shaft Style
Round
Shaft Bearing Type
Ball
Actuator Type
Single shaft
Effective Electrical Rotation In Deg Angular Rotation
320.0
Maximum Starting Torque
0.25 inch-ounces
Maximum Running Torque
0.25 inch-ounces
Shaft End Play
0.001 inches
Shaft Runout
0.001 inches
Lateral Runout
0.001 inches
Pilot Diameter Runout
0.001 inches
Shaft Radial Play
0.001 inches
Fragility Factor
Moderately delicate
Terminal Location
Longitudinally positioned on the circumference
Mounting Method
Clamp ring
Cubic Measure
1.133 cubic inches
Electrical Resistance Per Section
100.0 kilohms all sections
Tap Location From Ccw Terminal Per Section In Deg Of Effective Electrical Rotation
180.0 1st section
Tap Location From Ccw Terminal Per Section In Deg Of Effective Electrical Rotation
180.0 2nd section
Rotary Actuator Travel In Angular Deg
360.0
Function Conformity Tolerance Per Section
-0.50/+0.50 all sections
Ambient Tempurature In Deg Celsius Per Section At Zero Percent Rated Power
125.0 all sections
Power Dissipation Rating Per Section In Watts
2.0 free air all sections
Function Conformity Per Section
All sections absolute linearity
Fixed Tap Quantity Per Section
1 1st section
Fixed Tap Quantity Per Section
1 2nd section
Tap Location Tolerance Per Section
-2.0/+2.0 degrees angular rotation 1st section
Tap Location Tolerance Per Section
-2.0/+2.0 degrees angular rotation 2nd section
Resistance Tolerance Per Section In Percent
-1.0/+1.0 all sections
Actuator Travel Control Feature
Continuous motion
Function Characteristic Per Section
All sections linear
Tempurature Coefficient Of Resistance Wire Per Section In Ppm Per Deg Celsius
-20.0/+20.0 all sections
Ambient Tempurature In Deg Celsius Per Section At Full Rated Power
70.0 all sections
Unpackaged Unit Weight
2.00 ounces
Terminal Type And Quantity
11 turret
NSN
5905-00-972-8672
Part Number
78WS338-1
Description
Resistor,variable,wire Wound,pre
CAGE
08815

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) of the output is equal to or less than plus or munus 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, nonprecision.

Part 78WS338-1 NSN 5905-00-972-8672

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
37408
FIIG:
A002A0
Concept No.:
1
App. Key:
D
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:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
ZZ
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:
658
TCC:
Z
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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