Model: T1557A

Audio Frequency Transformer

Properties:

Reliability Indicator
Not established
Overall Height
2.010 inches
Impedance Rating In Ohms
381.0 single component single primary
Impedance Rating In Ohms
381.0 single component single secondary
Frequency Rating
4.0 kilohertz single component
Maximum Transformer Power Rating
2.0 watts single component
Primary To Secondary Turn Ratio
1 to 1 single component
Body Length
1.140 inches
Body Width
0.800 inches
Body Height
1.390 inches
Distance Between Mounting Facility Centers
0.440 inches single mounting facility single center group
Inclosure Type
Hermetically sealed
Mounting Facility Quantity
2 single group
Mounting Method
Threaded hole single group
Winding Function And Quantity
1 primary single component and 1 secondary single component
Thready Qty Per Inch (tpi)
32 single group
Thread Size
0.138 inches single group
Winding Operating Current
26.0 milliamperes dc single component single primary
Winding Operating Current
26.0 milliamperes dc single component single secondary
Thread Series Designator
Unc single group
Terminal Type And Quantity
5 standoff, solder lug
NSN
5950-00-864-9397
Part Number
T1557A
Description
Transformer,audio Frequency
CAGE
98330

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 T1557A NSN 5950-00-864-9397

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:
EH
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
2.0 X 1.4 X 1.1
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:
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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