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Technical Data Sheet
PartsTable / COMPONENT / TD55191
TD55191 ✓ 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 SEMICONDUCTOR DEVICE,DIODE is a the manufacturer industrial component. Key specifications include material: SILICON SEMICONDUCTOR, overall_length: 0.140 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 1.000 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN, overall_diameter: 0.056 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN, features_provided: HERMETICALLY SEALED CASE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-019-4955, 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
TD55191
NSN: 5961-01-019-4955
FSC: 5961
CAGE: 15818 — TELCOM SEMICONDUCTOR INC (USA)
SPECIFICATIONS
materialSILICON SEMICONDUCTOR
overall_length0.140 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length1.000 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
overall_diameter0.056 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
features_providedHERMETICALLY SEALED CASE
terminal_type_and_quantity2 UNINSULATED WIRE LEAD
specification/standard_data81349-MIL-PRF-19500/231 GOVERNMENT SPECIFICATION
current_rating_per_characteristic200.00 MILLIAMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE AND 4.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT
voltage_rating_in_volts_per_characteristic75.0 MAXIMUM BREAKDOWN VOLTAGE, DC AND 50.0 MAXIMUM WORKING PEAK REVERSE VOLTAGE
maximum_operating_temp_per_measurement_point175.0 CELSIUS JUNCTION DEGC
NSN5961-01-019-4955
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 TD55191 MFR OEM SEMICONDUCTOR DEVICE,DIODE
KEY FEATURES
•
SPECIFICATION/STANDARD DATA: 81349-MIL-PRF-19500/231 GOVERNMENT SPECIFICATION
•
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 175.0 CELSIUS JUNCTION DEGC
•
FEATURES PROVIDED: HERMETICALLY SEALED CASE
•
TERMINAL LENGTH: 1.000 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
•
OVERALL DIAMETER: 0.056 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 75.0 MAXIMUM BREAKDOWN VOLTAGE, DC AND 50.0 MAXIMUM WORKING PEAK REVERSE VOLTAGE
•
CURRENT RATING PER CHARACTERISTIC: 200.00 MILLIAMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE AND 4.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA81349-MIL-PRF-19500/231 GOVERNMENT SPECIFICATION
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT175.0 CELSIUS JUNCTION DEGC
FEATURES PROVIDEDHERMETICALLY SEALED CASE
TERMINAL LENGTH1.000 INCHES MINIMUM AND 1.500 INCHES MAXIMUM IN
OVERALL DIAMETER0.056 INCHES MINIMUM AND 0.107 INCHES MAXIMUM IN
OVERALL LENGTH0.140 INCHES MINIMUM AND 0.300 INCHES MAXIMUM IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC75.0 MAXIMUM BREAKDOWN VOLTAGE, DC AND 50.0 MAXIMUM WORKING PEAK REVERSE VOLTAGE
CURRENT RATING PER CHARACTERISTIC200.00 MILLIAMPERES MAXIMUM AVERAGE FORWARD CURRENT AVERAGED OVER A FULL 60-HZ CYCLE AND 4.00 AMPERES MAXIMUM PEAK FORWARD SURGE CURRENT
MOUNTING METHODTERMINAL
MATERIALGLASS ENCLOSURE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
000-8002-764Interchangeable
interchangeable cross-reference
interchangeable
S600 1005AInterchangeable
interchangeable cross-reference
interchangeable
1N4150Interchangeable
interchangeable cross-reference
interchangeable
479-1239-004Interchangeable
interchangeable cross-reference
interchangeable
10133094Interchangeable
interchangeable cross-reference
interchangeable
MIL-PRF-19500/231Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is TD55191?
TD55191 is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace TD55191?
There are 31 known substitutes for TD55191: 000-8002-764, S600 1005A, 1N4150 and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for TD55191?
TD55191 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-019-4955. 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