PartsTable
Technical Data Sheet
J4303 ✓ 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 TRANSISTOR is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY BODY, nut_style: HEXAGON, nut_height: 0.125 INCHES NOMINAL IN, thread_class: 3B, thread_series: UNF, connection_type: THREADED INTERNAL PIPE ALL ENDS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-190-9021, 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
J4303
NSN: 5961-01-190-9021
FSC: 5961
CAGE: 15818 — TELCOM SEMICONDUCTOR INC (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
nut_styleHEXAGON
nut_height0.125 INCHES NOMINAL IN
thread_class3B
thread_seriesUNF
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorCROSS
thread_directionRIGHT-HAND
surface_treatmentPASSIVATE OVERALL
width_across_flats0.495 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN
nominal_thread_size0.375 INCHES IN
NSN5961-01-190-9021
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 J4303 MFR OEM TRANSISTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
44393Interchangeable
interchangeable cross-reference
interchangeable
40542Interchangeable
interchangeable cross-reference
interchangeable
7030110Interchangeable
interchangeable cross-reference
interchangeable
MS14311-1R-PWInterchangeable
interchangeable cross-reference
interchangeable
MS14311Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is J4303?
J4303 is a TRANSISTOR.
What parts can replace J4303?
There are 5 known substitutes for J4303: 44393, 40542, 7030110 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for J4303?
J4303 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-190-9021. This indicates validated use in U.S. government and defense supply chains.
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