Model: SB673-21

Control Transformer Synchro

Properties:

Body Material
Steel, corrosion resisting
Body Style
Standard round a
Pilot Diameter
0.5000 inches
Overall Length
1.5880 inches
Flange Diameter
0.7500 inches
Flange Thickness
0.0620 inches
Undercut Diameter
0.6910 inches
Undercut Width
0.0620 inches
Shaft Diameter
0.0900 inches single shaft
Shaft Length
0.3750 inches single shaft
Fragility Factor
Moderately rugged
Body Size
8
Stator Input Voltage Rating In Volts
26.0
Stator Input Current Rating
81.0 milliamperes
Stator Input Electrical Power Rating
200.0 milliwatts
Frequency In Hertz
400.0
Zro Resistance In Ohms
250.00
Zso Resistance In Ohms
35.00
Zrs Resistance In Ohms
325.00
Rotor Dc Resistance In Ohms
225.00
Stator Dc Resistance In Ohms
25.00
Phase Shift Angle In Deg
4.000 input to output
Maximum Fundamental Null Voltage In Millivolts Per Volt
30.00 input
Maximum Total Null Voltage Output In Millivolts Per Volt
70.00
Electrical Error Angular Range In Minutes
-7.0/+7.0
Actuator Friction Torque At Minus 55 Deg Celsius
6.0 centimeter-grams
Actuator Friction Torque At Plus 25 Deg Celsius
3.0 centimeter-grams
Shaft Maximum Radial Play
0.0006 inches
Pilot Length
0.0430 inches
Mounting Surface To Terminal End Distance
1.2410 inches
Terminal Location
Rear
Plus J Zro Reactance In Ohms
625.00
Shaft Slot Depth
0.0250 inches single shaft
Plus J Zso Reactance In Ohms
140.00
Shaft Slot Width
0.0200 inches single shaft
Plus J Zrs Reactance In Ohms
65.00
Shaft Type
Round, slotted single shaft
Transformation Ratio
0.465 rotor to stator
Terminal Type And Quantity
5 wire lead
NSN
5990-00-121-2134
Part Number
SB673-21
Description
Synchro,control Transformer
CAGE
06989

A synchro consisting of a stator and rotor inductively coupled. The electrical output of the rotor is dependent upon both the position of the rotor and the electrical input to the stator from a transmitter synchro or a differential synchro. Does not include variable resistors, goniometers, or variable transformers.

Part SB673-21 NSN 5990-00-121-2134

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15289
FIIG:
A07800
Concept No.:
1
App. Key:
B
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:
M
SPI No.:
SPI Rev.:
SPC Mkg:
LVL_A:
E
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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