The TD-1251/U is a the manufacturer industrial component. This part is cataloged in the U.S. Government catalog under NSN 6645-01-063-0399, 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
TD-1251/U
NSN:6645-01-063-0399 FSC:6645 — Time Measuring Instruments CAGE:80058 — JOINT ELECTRONICS TYPE DESIGNATION SYSTEM (USA)
SPECIFICATIONS
Part Number
TD-1251/U
NSN
6645-01-063-0399
COMPONENT DIAGRAM
TECHNICAL CHARACTERISTICS
SPECIAL FEATURES
OUTPUTS:SECOND MARK, REAL TIME DATA (RTD), RTD TRANSFER CLOCK, REAL TIME TRANSFER GATE, 1 MHZ SINUSOIDAL, 1 FRONT, 5 MHZ SINUSOIDAL, 1 FRONT, 3 MHZ SQUARE WAVE; 3.01 0.5 VOLTS, PEAT-TO-PEAK INTO A 75 OHM LOAD, USES CESIUM BEAM FREQUENCY STANDARD AND INTERNAL BATTERY IN PORTABLE CASE MHz
OTHER ITEMS IN FSC 6645 — Time Measuring Instruments
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
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FREQUENTLY ASKED QUESTIONS
What is TD-1251/U?
TD-1251/U is a TD-1251/U.
What parts can replace TD-1251/U?
There are 2 known substitutes for TD-1251/U: 21750-6200, FE-5440A. Substitute compatibility should be verified for your specific system.
What is the NSN for TD-1251/U?
TD-1251/U is cataloged in the U.S. Government catalog under NSN 6645-01-063-0399. This indicates validated use in U.S. government and defense supply chains.
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