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Transmitter Synchro

NSN: 5990-01-013-4569 | Model: M20708/78-02C

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.

NSN Properties and Flags
NATO Stock Number
5990-01-013-4569
DEMIL
NO
Body Material
Aluminum
Body Style
Standard round a
Pilot Diameter
0.5000 inches
Overall Length
1.7900 inches
Flange Diameter
0.7500 inches
Flange Thickness
0.0620 inches
Undercut Diameter
0.6870 inches
Undercut Width
0.0620 inches
Shaft Diameter
0.0900 inches single shaft
Shaft Length
0.5000 inches single shaft
Fragility Factor
Moderately rugged
Maximum Tempurature Rise
8.5 degrees celsius
Body Size
8
Rotor Input Voltage Rating In Volts
26.0
Frequency In Hertz
400.0
Rotor Input Current Rating
153.0 milliamperes
Rotor Input Electrical Power Rating
70.0 milliwatts
Zro Impedance Magnitude In Ohms
Between 170.00 and 215.00
Zro Impedance Angle In Deg
Between 77.50 and 80.50
Zss Impedance Magnitude In Ohms
Between 11.00 and 15.00
Zss Impedance Angle In Deg
Between 9.00 and 15.00
Phase Shift Angle In Deg
8.500 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
20.00 output
Maximum Total Null Voltage Output In Millivolts Per Volt
30.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Actuator Friction Torque At Minus 55 Deg Celsius
0.04 inch-ounces
Pilot Length
0.0400 inches
Mounting Surface To Terminal End Distance
1.2400 inches
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
Transformation Ratio
0.454 rotor to stator
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 wire lead
Specification Data
81349-mil-s-20708/78 government specification

Inventory Check

The last inventory check on this NSN was done on 08/22/2022. Due to rapid changes in inventory this may not be the current stock qty.

  • New Surplus: 2
  • New: 1
  • Serviceable: 1

Pricing and Availability

Send us a request for quote using the form below. Our team will contact you with an up to date pricing and availability quote ASAP.

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NSN 5990-01-013-4569 Datasheet

Supply Class (FSC):
Synchros And Resolvers
Cross Reference:
  • M20708/78-02C
  • MIL-S-20708/78
  • 26V-08CX4C
  • M20708/78D-002
Cage Codes:
  • Military Specifications (CAGE 81349)
Schedule B & Trade:
  • Schedule B: 9014900000 (NAICS 334511)

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

  • SITC: 87412

    Parts and accessories of navigational instruments and appliances

  • End Use: 22220

    Marine engines, parts

Identification:
HMIC

N - Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

PMIC

U - Precious metal content is unknown

CRITL

- The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Freight Information:
  • NMFC:

    062120 - Generators/motors/parts noi

  • WCC:

    593 - Motors and parts, (machinery and parts),(less than 35 feet)

  • SHC:

    9 - Other or no special handling required (sh)

  • ADC:

    A - Shipment is not a consolidation and does not exceed 84 inches in any dimension.

  • ACC:

    H - Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)

  • LTL:

    W - Rating variable

  • TCC:

    Z - No special type of cargo code applicable

NSN Management Codes:
  • SOS
    S9e
  • AAC
    V
  • Quantity per pack
    No qup
  • Unit of Measure
    Ea
  • Shelf Life
    N/A
  • Classification Control
    U
  • MGMT_CTL
    9n-----
  • Repariability

Questions & Answers:
What are the historical prices recorded for this stock number?
Historical data shows pricing from $496.45 to $827.42..
Does NSN 5990-01-013-4569 have a shelf life?
No. There is no shelf life applicable for this NSN.
What NATO entities are users of this NSN?
Australia
What is the NIIN of NSN 5990-01-013-4569?
010134569 or 01-013-4569
Does NSN 5990-01-013-4569 require demilitarization?
Yes - ITAR Controlled
What is the most recent solicitation for NSN 5990-01-013-4569?
No solicitations for this NSN.
When was this national stock number assigned to the federal catalog?
Dec 05, 1975