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PartsTable / COMPONENT / 40-666-5161
40-666-5161 ✓ 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 overall_height: 0.450 INCHES MAXIMUM IN, overall_length: 0.375 INCHES MAXIMUM IN, mounting_method: UNTHREADED HOLE(S), overall_diameter: 0.875 INCHES MAXIMUM IN, features_provided: HERMETICALLY SEALED CASE, internal_configuration: JUNCTION CONTACT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-904-2021, 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
40-666-5161
NSN: 5961-00-904-2021
FSC: 5961
CAGE: K0801 — HENSOLDT UK (GBR)
SPECIFICATIONS
overall_height0.450 INCHES MAXIMUM IN
overall_length0.375 INCHES MAXIMUM IN
mounting_methodUNTHREADED HOLE(S)
overall_diameter0.875 INCHES MAXIMUM IN
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
mounting_facility_quantity2
terminal_type_and_quantity2 UNINSULATED WIRE LEAD AND 1 CASE
specification/standard_data80131-RELEASE5031 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
internal_junction_configurationPNP
power_rating_per_characteristic150.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
NSN5961-00-904-2021
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 40-666-5161 MFR OEM TRANSISTOR
KEY FEATURES
•
MOUNTING FACILITY QUANTITY: 2
•
INTERNAL CONFIGURATION: JUNCTION CONTACT
•
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 200.0 CELSIUS JUNCTION DEGC
•
OVERALL DIAMETER: 0.875 INCHES MAXIMUM IN
•
MOUNTING METHOD: UNTHREADED HOLE(S)
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
•
INTERNAL JUNCTION CONFIGURATION: PNP
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY QUANTITY2
OVERALL LENGTH0.375 INCHES MAXIMUM IN
INTERNAL CONFIGURATIONJUNCTION CONTACT
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT200.0 CELSIUS JUNCTION DEGC
OVERALL DIAMETER0.875 INCHES MAXIMUM IN
MOUNTING METHODUNTHREADED HOLE(S)
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC80.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 60.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
INTERNAL JUNCTION CONFIGURATIONPNP
SEMICONDUCTOR MATERIALSILICON
TERMINAL TYPE AND QUANTITY2 UNINSULATED WIRE LEAD AND 1 CASE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 29
C11362-0002Interchangeable
interchangeable cross-reference
interchangeable
2859656Interchangeable
interchangeable cross-reference
interchangeable
3008259-018-101Interchangeable
interchangeable cross-reference
interchangeable
38237130-1001Interchangeable
interchangeable cross-reference
interchangeable
2136596G001Interchangeable
interchangeable cross-reference
interchangeable
2N3713Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 40-666-5161?
40-666-5161 is a TRANSISTOR.
What parts can replace 40-666-5161?
There are 29 known substitutes for 40-666-5161: C11362-0002, 2859656, 3008259-018-101 and 26 more. Substitute compatibility should be verified for your specific system.
Is 40-666-5161 still available?
40-666-5161 is currently cancelled.
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Last verified: July 2026