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CH77 — Technical Data Sheet

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— · COMPONENT
WHAT YOU NEED TO KNOW
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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 material: STEEL, top_till: NOT PROVIDED, body_width: 0.938 INCHES NOMINAL IN, body_height: 0.688 INCHES NOMINAL IN, body_length: 1.062 INCHES NOMINAL IN, panel_front: NOT PROVIDED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5140-00-498-8772, 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
CH77
NSN: 5140-00-498-8772
FSC: 5140
CAGE: 80063 — US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR (USA)
SPECIFICATIONS
materialSTEEL
top_tillNOT PROVIDED
body_width0.938 INCHES NOMINAL IN
body_height0.688 INCHES NOMINAL IN
body_length1.062 INCHES NOMINAL IN
panel_frontNOT PROVIDED
overall_width8.500 INCHES NOMINAL IN
tray_quantity1
inclosure_typeFULLY INCLOSED
overall_height7.375 INCHES NOMINAL IN
overall_length21.000 INCHES NOMINAL IN
removable_trayPROVIDED
NSN5140-00-498-8772
COMPONENT DIAGRAM
COMPONENT MAIN IC EDGE CONNECTOR No detailed specs available TRANSFORMER,AUDIO FREQUENCY TITLE COMPONENT PN CH77 MFR TRANSFORMER,AUDIO FREQ
KEY FEATURES
•
REMOVABLE TRAY: PROVIDED
•
HANDLE QUANTITY: 2
•
SURFACE TREATMENT: ENAMEL
•
TOP TILL: NOT PROVIDED
•
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND 3 CLASS
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH21.000 INCHES NOMINAL IN
OVERALL WIDTH8.500 INCHES NOMINAL IN
OVERALL HEIGHT7.375 INCHES NOMINAL IN
REMOVABLE TRAYPROVIDED
HANDLE QUANTITY2
SURFACE TREATMENTENAMEL
TOP TILLNOT PROVIDED
NONDEFINITIVE SPEC/STD DATA2 TYPE AND 3 CLASS
TRAY QUANTITY1
PANEL FRONTNOT PROVIDED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
GSA-8910Interchangeable
interchangeable cross-reference
interchangeable
PD5140-00-289-8910Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-558 TY2CL1Interchangeable
interchangeable cross-reference
interchangeable
GSA-8911Interchangeable
interchangeable cross-reference
interchangeable
5140-00-289-8911Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-558 TY2CL3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is CH77?
CH77 is a TRANSFORMER,AUDIO FREQUENCY.
What parts can replace CH77?
There are 23 known substitutes for CH77: GSA-8910, PD5140-00-289-8910, GGG-T-558 TY2CL1 and 20 more. Substitute compatibility should be verified for your specific system.
Is CH77 still available?
CH77 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: September 2026