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Technical Data Sheet
PartsTable / COMPONENT / 1N3666A
1N3666A ✓ 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: GERMANIUM SEMICONDUCTOR, overall_length: 0.300 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 1.000 INCHES MINIMUM IN, overall_diameter: 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 5961-00-403-5457, 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
1N3666A
NSN: 5961-00-403-5457
FSC: 5961
CAGE: C7191 — ADELCO ELEKTRONIK GMBH (DEU)
SPECIFICATIONS
materialGERMANIUM SEMICONDUCTOR
overall_length0.300 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length1.000 INCHES MINIMUM IN
overall_diameter0.107 INCHES MAXIMUM IN
features_providedHERMETICALLY SEALED CASE
terminal_type_and_quantity2 UNINSULATED WIRE LEAD
specification/standard_data80131-RELEASE4021 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
current_rating_per_characteristic30.00 MILLIAMPERES MAXIMUM FORWARD CURRENT, DC
voltage_rating_in_volts_per_characteristic80.0 MAXIMUM REVERSE VOLTAGE, PEAK
joint_electronic_device_engineering_council/jedec/case_outline_designationDO-7
NSN5961-00-403-5457
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 1N3666A MFR OEM SEMICONDUCTOR DEVICE,DIODE
KEY FEATURES
•
SPECIFICATION/STANDARD DATA: 80131-RELEASE4021 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
•
OVERALL DIAMETER: 0.107 INCHES MAXIMUM IN
•
MOUNTING METHOD: TERMINAL
•
CURRENT RATING PER CHARACTERISTIC: 30.00 MILLIAMPERES MAXIMUM FORWARD CURRENT, DC
•
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATION: DO-7
•
FEATURES PROVIDED: HERMETICALLY SEALED CASE
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 80.0 MAXIMUM REVERSE VOLTAGE, PEAK
TECHNICAL CHARACTERISTICS (FLIS)
SPECIFICATION/STANDARD DATA80131-RELEASE4021 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
OVERALL DIAMETER0.107 INCHES MAXIMUM IN
MOUNTING METHODTERMINAL
CURRENT RATING PER CHARACTERISTIC30.00 MILLIAMPERES MAXIMUM FORWARD CURRENT, DC
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATIONDO-7
OVERALL LENGTH0.300 INCHES MAXIMUM IN
FEATURES PROVIDEDHERMETICALLY SEALED CASE
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC80.0 MAXIMUM REVERSE VOLTAGE, PEAK
TERMINAL LENGTH1.000 INCHES MINIMUM IN
MATERIALGERMANIUM SEMICONDUCTOR
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
538139-15Interchangeable
interchangeable cross-reference
interchangeable
5E4810/14-0003Interchangeable
interchangeable cross-reference
interchangeable
720660-27Interchangeable
interchangeable cross-reference
interchangeable
1N835Interchangeable
interchangeable cross-reference
interchangeable
RELEASE4021Interchangeable
interchangeable cross-reference
interchangeable
1N1344BInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1N3666A?
1N3666A is a SEMICONDUCTOR DEVICE,DIODE.
What parts can replace 1N3666A?
There are 13 known substitutes for 1N3666A: 538139-15, 5E4810/14-0003, 720660-27 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1N3666A?
1N3666A is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-403-5457. This indicates validated use in U.S. government and defense supply chains.
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Last verified: July 2026