Model: ST-257

Radio Frequency Transformer

Special Features:

Terminals 3 and 4 connected and grounded to inclosure

Properties:

Reliability Indicator
Not established
Hazardous Locations/environmental Protection
Humidity resistant and salt spray resistant and
Hazardous Locations/environmental Protection
Vibration resistant
Overall Length
0.275 inches
Frequency Rating
500.0 kilohertz single component and 150.0 megahertz single component
Coil Form Type
Solid single component
Winding Shielding Method
Core grounded single component and inclosure grounded single component
Overall Diameter
0.360 inches
Maximum Operating Temp
125.0 degrees celsius
Inclosure Type
Fully enclosed
Mounting Method
Terminal single group
Winding Function And Quantity
1 primary, fixed autotransformer type single component
Terminal Type And Quantity
3 pin
NSN
5950-01-058-6558
Part Number
ST-257
Description
Transformer,radio Frequency
CAGE
05375

An item having either a single tapped winding (autotransformer type), or two or more windings designed to furnish inductive reactance and/or transfer electrical energy in circuits by means of a magnetic field. It is so designed that its entire intended range of operations is above 20 kilohertz (kilocycles). The minimum value may extend into the audio frequency range (below 20 kilohertz). It may include integral capacitors, coils, resistors, and adjustable tuning cores. For items having only two active terminals see coil, radio frequency. Includes types having windings which may be moved with respect to each other. Excludes transformer, discriminator.

Part ST-257 NSN 5950-01-058-6558

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
00777
FIIG:
A058B0
Concept No.:
App. Key:
L
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:
A
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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