4-125A-4D21 — ELECTRON TUBE

✓ Government record, cited

— · COMPONENT

PRODUCT OVERVIEW

4-125A-4D21: ELECTRON TUBE.

The ELECTRON TUBE is a the manufacturer industrial component. Key specifications include tube_type: TETRODE, nondefinitive_spec/std_data: 4D21 TYPE. This part is cataloged in the U.S.

Government catalog under NSN 5960-00-188-0921, 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

4-125A-4D21

NSN: 5960-00-188-0921
FSC: 5960 — Electron Tubes and Associated Hardware
CAGE: 06980 — COMMUNICATIONS & POWER INDUSTRIES LLC DBA CPI DIV MICROWAVE POWER PRODUCTS DIVISION - EIMAC OPERATIONS (USA)

SPECIFICATIONS

tube_type	TETRODE
nondefinitive_spec/std_data	4D21 TYPE
NSN	5960-00-188-0921

COMPONENT DIAGRAM

KEY FEATURES

•

TUBE TYPE: TETRODE

•

NONDEFINITIVE SPEC/STD DATA: 4D21 TYPE

TECHNICAL CHARACTERISTICS

TUBE TYPE	TETRODE
NONDEFINITIVE SPEC/STD DATA	4D21 TYPE

SUBSTITUTES & CROSS-REFERENCES 5

MIL-PRF-1/776Reference document

Same NSN cross-reference

Reference document — Identification reference

MILE1-776Reference document

Same NSN cross-reference

Reference document — Secondary reference

4D21Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

QB3-300Reference document

Same NSN cross-reference

Reference document — Replaced / superseded reference

4-125AReference document

Same NSN cross-reference

Reference document — Advisory reference — outside the item-of-supply concept

LIFECYCLE

NSN statusCancelled· U.S. Government catalog

HAZMAT per U.S. Government catalogAcquisition advice: Normally procured from the manufacturer (OEM)Demilitarization required (F)

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FREQUENTLY ASKED QUESTIONS

What is 4-125A-4D21?

4-125A-4D21 is a ELECTRON TUBE.

What parts can replace 4-125A-4D21?

There are 5 known substitutes for 4-125A-4D21: MIL-PRF-1/776, MILE1-776, 4D21 and 2 more. Substitute compatibility should be verified for your specific system.

What is the NSN for 4-125A-4D21?

4-125A-4D21 is cataloged in the U.S. Government catalog under NSN 5960-00-188-0921. This indicates validated use in U.S. government and defense supply chains.

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4-125A-4D21 — ELECTRON TUBE

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