Model: MIL-S-20708/2

Transmitter Synchro

Properties:

Body Material
Steel, stainless
Body Style
Standard round c
Shoulder Diameter
Between 0.9995 inches and 1.0000 inches
Pilot Diameter
Between 0.6245 inches and 0.6250 inches
Overall Length
Between 2.3360 inches and 2.3760 inches
Flange Diameter
Between 1.0570 inches and 1.0620 inches
Flange Thickness
0.0930 inches
Undercut Diameter
0.9750 inches
Undercut Width
0.0620 inches
Shaft Diameter
0.1198 inches single shaft and 0.1200 inches single shaft
Shaft Length
0.5460 inches single shaft and 0.5650 inches single shaft
Fragility Factor
Moderately rugged
Maximum Tempurature Rise
20.0 degrees celsius
Securing Hole Quantity
4
Body Size
11
Rotor Input Voltage Rating In Volts
115.0
Frequency In Hertz
400.0
Rotor Input Current Rating
31.0 milliamperes
Rotor Input Electrical Power Rating
490.0 milliwatts
Zro Resistance In Ohms
Between 3720.00 and 4700.00
Zss Resistance In Ohms
Between 410.00 and 500.00
Zro Impedance Magnitude In Ohms
Between 80.00 and 84.00
Zss Impedance Magnitude In Ohms
Between 17.00 and 26.00
Phase Shift Angle In Deg
4.500 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
45.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
75.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Actuator Friction Torque At Minus 55 Deg Celsius
0.07 inch-ounces
Actuator Friction Torque At Plus 25 Deg Celsius
0.07 inch-ounces
Pilot Length
Between 0.0450 inches and 0.0650 inches
Shoulder Length
Between 0.0590 inches and 0.0790 inches
Mounting Surface To Terminal End Distance
Between 1.7910 inches and 1.8110 inches
Mounting Facility Screw Thread Series Designator
Unc
Terminal Location
Rear
Shaft Slot Depth
0.0250 inches single shaft
Shaft Slot Width
0.0200 inches single shaft
Shaft Type
Round, slotted single shaft
Alignment Hole Depth
0.1250 inches
Mounting Facility Screw Thread Diameter
0.112 inches
Transformation Ratio
0.783 rotor to stator
Alignment Hole Bolt Circle Diameter
0.6250 inches
Test Data Document
81349-mil-s-20708 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).
Terminal Type And Quantity
5 screw
NSN
5990-00-206-3753
Part Number
MIL-S-20708/2
Description
Synchro,transmitter
CAGE
81349

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the stator into a receiver synchro, a control transformer or differential synchro is dependent upon the position of its rotor. Does not include variable resistors, goniometers, variable transformers, or items with dials.

Part MIL-S-20708/2 NSN 5990-00-206-3753

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
02073
FIIG:
A07800
Concept No.:
1
App. Key:
H
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:
0.3000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
062120
UFC:
34760
LTL:
RATING VARIABLE
LCL:
--
WCC:
593
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 9014900000
  • SITC: 87412
  • End Use: Marine engines, parts
  • NAICS: 334511
  • USDA: 1

Freight Class: Parts & accessories for direction finding compasses and other navigational instruments and appliances

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