Model: S278

Audio Frequency Transformer

Properties:

Reliability Indicator
Not established
Center To Center Distance Between Mounting Facilities Parallel To Length
1.593 inches single mounting facility single center group
Center To Center Distance Between Mounting Facilities Parallel To Width
1.312 inches single mounting facility single center group
Mounting Hole Diameter
0.159 inches single group
Transformer Function
Line
Impedance Rating In Ohms
280.0 single component single primary
Impedance Rating In Ohms
420.0 single component single secondary
Frequency Rating
100.0 hertz single component and 20.0 kilohertz single component
Primary To Secondary Turn Ratio
1 to 1 single component
Body Length
2.063 inches
Body Width
1.875 inches
Body Height
2.500 inches
Inclosure Type
Fully enclosed
Mounting Facility Quantity
4 single group
Mounting Method
Unthreaded hole single group
Winding Function And Quantity
1 primary single component and 1 secondary single component
Winding Operating Current
35.0 milliamperes dc single component single primary
Winding Operating Current
25.0 milliamperes dc single component single secondary
Terminal Type And Quantity
4 tab, solder lug
NSN
5950-00-858-6044
Part Number
S278
Description
Transformer,audio Frequency
CAGE
90095

A transformer which is designed so that part or all of its range of operating frequencies is 20 kilohertz (kilocycles) and below. The maximum value may extend into the radio frequency range. It is generally used in the input, output, amplifier, or oscillator stages of audio and sonar devices.

Part S278 NSN 5950-00-858-6044

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00780
FIIG:
A058B0
Concept No.:
1
App. Key:
F
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:
P
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:
--
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:
063420
UFC:
35355
LTL:
RATING VARIABLE
LCL:
--
WCC:
595
TCC:
Z
SHC:
9
ACC:
Instruments/Radio

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Schedule B and Export
  • Schedule B: 8548900100
  • SITC: 77813
  • End Use: Electric apparatus
  • NAICS: 335999
  • USDA: 1

Freight Class: Electrical parts of machinery or apparatus not specified or included elsewhere in chapter 85

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