PartsTable
Technical Data Sheet
1221643 ✓ Verified by PartsTable
· SFP TRANSCEIVER
WHAT YOU NEED TO KNOW
SR = Short Range (multimode, 300m) | LR = Long Range (single-mode, 10km) DOM = Digital Optical Monitoring — most enterprise SFPs support it
MATCH ALL THREE: Speed + Wavelength + Brand compatibility
PRODUCT OVERVIEW

The MOUNTING KIT is a the manufacturer industrial 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 5961-00-421-5571, 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
1221643
NSN: 5961-00-421-5571
FSC: 5961
CAGE: 16758 — GENERAL MOTORS CORP DELCO ELECTRONICS DIV (USA)
SPECIFICATIONS
general_characteristics_item_descriptionCONSISTS OF 1 MICA INSULATOR,1 INSULATING BUSHING,1 MICA WASHER,1 METALWASHER,1 SOLDER LUG,1 HEX NUT,APPLICABLE TO TO-36 CASE
NSN5961-00-421-5571
COMPONENT DIAGRAM
BAIL LATCH 10G SFP+ 850nm · SR (MMF, 300m) DOM: Digital Optical Monitoring TX RX LC DUPLEX 20-PIN EDGE CONNECTOR ~56.5 mm ~13.4mm SFP+ TRANSCEIVER | 10G | 850nm | SR (MMF, 300m) Hot-swappable | LC duplex fiber | DDM/DOM supported TITLE SFP+ XCVR PN 1221643 MFR OEM MOUNTING KIT
KEY FEATURES
GENERAL CHARACTERISTICS ITEM DESCRIPTION: CONSISTS OF 1 MICA INSULATOR,1 INSULATING BUSHING,1 MICA WASHER,1 METALWASHER,1 SOLDER LUG,1 HEX NUT,APPLICABLE TO TO-36 CASE
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONCONSISTS OF 1 MICA INSULATOR,1 INSULATING BUSHING,1 MICA WASHER,1 METALWASHER,1 SOLDER LUG,1 HEX NUT,APPLICABLE TO TO-36 CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
51079Interchangeable
interchangeable cross-reference
interchangeable
MK30Interchangeable
interchangeable cross-reference
interchangeable
NCG030Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1221643?
1221643 is a MOUNTING KIT.
What parts can replace 1221643?
There are 3 known substitutes for 1221643: 51079, MK30, NCG030. Substitute compatibility should be verified for your specific system.
What is the NSN for 1221643?
1221643 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-421-5571. This indicates validated use in U.S. government and defense supply chains.
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