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Technical Data Sheet
PartsTable / MRO / 40-109
40-109 ✓ Verified by PartsTable
— · MRO · MRO_GENERAL
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 TELETYPEWRITER SUBASSEMBLY is a the manufacturer industrial component. Key specifications include special_features: WIRE HARNESS 1; CODE-BOARD 1. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-070-3364, 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
MRO→ MRO_GENERAL→ 40-109
NSN: 5961-00-070-3364
FSC: 5961
CAGE: 49671 — LOCKHEED MARTIN CORPORATION DBA LOCKHEED MARTIN DIV LOCKHEED MARTIN (USA)
SPECIFICATIONS
special_featuresWIRE HARNESS 1; CODE-BOARD 1
NSN5961-00-070-3364
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 40-109 MFR OEM TELETYPEWRITER SUBASSEMBLY
KEY FEATURES
•
MATERIAL: SILICON SEMICONDUCTOR
•
TERMINAL TYPE AND QUANTITY: 2 TAB, SOLDER LUG
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSILICON SEMICONDUCTOR
TERMINAL TYPE AND QUANTITY2 TAB, SOLDER LUG
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
5028-376Interchangeable
interchangeable cross-reference
interchangeable
40109Interchangeable
interchangeable cross-reference
interchangeable
43941Interchangeable
interchangeable cross-reference
interchangeable
254619146-272Interchangeable
interchangeable cross-reference
interchangeable
PEI8574Interchangeable
interchangeable cross-reference
interchangeable
40-109CPInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40-109?
40-109 is a TELETYPEWRITER SUBASSEMBLY. It is classified as a MRO (MRO_GENERAL).
What parts can replace 40-109?
There are 13 known substitutes for 40-109: 5028-376, 40109, 43941 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 40-109?
40-109 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-070-3364. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026