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Technical Data Sheet
TR181 ✓ 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 TRANSFORMER,AUDIO FREQUENCY is a the manufacturer industrial component. Key specifications include body_width: 2.000 INCHES NOMINAL IN, mouthpiece: INCLUDED, body_height: 2.500 INCHES NOMINAL IN, body_length: 2.250 INCHES NOMINAL IN, inclosure_type: HERMETICALLY SEALED, mounting_method: THREADED STUD(S) SINGLE GROUP. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 7710-00-195-1027, 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
TR181
NSN: 7710-00-195-1027
FSC: 7710
CAGE: 29193 — HOLTON FRANK AND CO (USA)
SPECIFICATIONS
body_width2.000 INCHES NOMINAL IN
mouthpieceINCLUDED
body_height2.500 INCHES NOMINAL IN
body_length2.250 INCHES NOMINAL IN
inclosure_typeHERMETICALLY SEALED
mounting_methodTHREADED STUD(S) SINGLE GROUP
frequency_rating5.0 KILOHERTZ MINIMUM AND 600.0 KILOHERTZ MAXIMUM SINGLE COMPONENT
surface_treatmentLACQUER OR SILVER
nominal_thread_size0.138 INCHES SINGLE GROUP IN
key_change_valve_typeDOUBLE ROTARY VALVE,KEY OF B-FLAT/F/G-FLAT
reliability_indicatorNOT ESTABLISHED
impedance_rating_in_ohms10000.0 NOMINAL SINGLE COMPONENT SINGLE PRIMARY
NSN7710-00-195-1027
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN TR181 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
SURFACE TREATMENT: LACQUER OR SILVER
MOUTHPIECE: INCLUDED
KEY CHANGE VALVE TYPE: DOUBLE ROTARY VALVE,KEY OF B-FLAT/F/G-FLAT
LYRE: INCLUDED
INCLOSURE TYPE: CASE
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTLACQUER OR SILVER
MOUTHPIECEINCLUDED
KEY CHANGE VALVE TYPEDOUBLE ROTARY VALVE,KEY OF B-FLAT/F/G-FLAT
LYREINCLUDED
SPECIAL FEATURESPROFESSIONAL,DOUBLE ROTARY VALVE KEY OF B-FLAT/F/G-FLAT,CHROME PLATED,NICKEL-SILVER,SEAMLESS INNER SLIDE; BRASS OUTER SLIDE; WIRE-REINFORCED BELL; 2 INDEPENDANT ROTARY VALVES; CONVENTIONAL OR OPEN WRAP TUBING; BORE SIZE 0.562 IN.,BELL SIZE 9.500 IN. TO 10.500 IN.,MOUTH PIECE; LYRE; LUBRICANTS; CLEANING ROD OR SNAKE IN
INCLOSURE TYPECASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
42BInterchangeable
interchangeable cross-reference
interchangeable
MS39256B42Interchangeable
interchangeable cross-reference
interchangeable
78-585Interchangeable
interchangeable cross-reference
interchangeable
GUN47AP23Interchangeable
interchangeable cross-reference
interchangeable
TR181Interchangeable
interchangeable cross-reference
interchangeable
KG2107Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TR181?
TR181 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace TR181?
There are 7 known substitutes for TR181: 42B, MS39256B42, 78-585 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TR181?
TR181 is cataloged in the Federal Logistics Information System (FLIS) under NSN 7710-00-195-1027. This indicates validated use in U.S. government and defense supply chains.
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