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Technical Data Sheet
PartsTable / COMPONENT / AT-2120
AT-2120 ✓ Verified by PartsTable
— · COMPONENT
WHAT YOU NEED TO KNOW
Verify manufacturer and server generation compatibility Check if Option PN or Spare PN — same part, different channel
Confirm exact part number — similar PNs may be different parts
PRODUCT OVERVIEW

The TELETYPEWRITER SUBASSEMBLY is a the manufacturer industrial component. Key specifications include body_width: 1.000 INCHES MAXIMUM IN, body_height: 1.375 INCHES MAXIMUM IN, body_length: 1.000 INCHES MAXIMUM IN, inclosure_type: HERMETICALLY SEALED, mounting_method: THREADED HOLE(S) SINGLE GROUP, frequency_rating: 300.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-978-2552, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AT-2120
NSN: 5950-00-978-2552
FSC: 5950
CAGE: 29525 — HYTRONICS CORP. (USA)
SPECIFICATIONS
body_width1.000 INCHES MAXIMUM IN
body_height1.375 INCHES MAXIMUM IN
body_length1.000 INCHES MAXIMUM IN
inclosure_typeHERMETICALLY SEALED
mounting_methodTHREADED HOLE(S) SINGLE GROUP
frequency_rating300.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
nominal_thread_size0.138 INCHES SINGLE GROUP IN
reliability_indicatorNOT ESTABLISHED
thread_quantity_per_inch32 SINGLE GROUP
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
winding_operating_current40.0 MILLIAMPERES AC MAXIMUM SINGLE COMPONENT SINGLE SECONDARY
winding_operating_voltage300.00 AC VOLTS NOMINAL SINGLE COMPONENT ALL PRIMARY
NSN5950-00-978-2552
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TELETYPEWRITER SUBASSEMBLY TITLE COMPONENT PN AT-2120 MFR TELETYPEWRITER SUBASSE
KEY FEATURES
•
RELIABILITY INDICATOR: NOT ESTABLISHED
•
FREQUENCY RATING: 300.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
•
INPUT-OUTPUT PHASE RELATIONSHIP: SINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
•
WINDING OPERATING VOLTAGE: 600.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
•
MOUNTING METHOD: THREADED HOLE(S) SINGLE GROUP
•
BODY LENGTH: 1.000 INCHES MAXIMUM IN
•
TERMINAL TYPE AND QUANTITY: 7 TAB, SOLDER LUG
TECHNICAL CHARACTERISTICS (FLIS)
RELIABILITY INDICATORNOT ESTABLISHED
FREQUENCY RATING300.0 HERTZ MINIMUM AND 3.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
INPUT-OUTPUT PHASE RELATIONSHIPSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
WINDING OPERATING VOLTAGE600.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE SECONDARY
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
MOUNTING METHODTHREADED HOLE(S) SINGLE GROUP
BODY LENGTH1.000 INCHES MAXIMUM IN
TERMINAL TYPE AND QUANTITY7 TAB, SOLDER LUG
INCLOSURE TYPEHERMETICALLY SEALED
BODY WIDTH1.000 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
150 5/16Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYBCL1Interchangeable
interchangeable cross-reference
interchangeable
312475Interchangeable
interchangeable cross-reference
interchangeable
44020Interchangeable
interchangeable cross-reference
interchangeable
868961-2Interchangeable
interchangeable cross-reference
interchangeable
10-378175-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is AT-2120?
AT-2120 is a TELETYPEWRITER SUBASSEMBLY.
What parts can replace AT-2120?
There are 11 known substitutes for AT-2120: 150 5/16, GGG-D-751 TYBCL1, 312475 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for AT-2120?
AT-2120 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5950-00-978-2552. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026