PartsTable
Technical Data Sheet
2N3971 ✓ 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_length: 0.210 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 0.500 INCHES MINIMUM IN, overall_diameter: 0.195 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: NPN, 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 5961-00-005-7008, 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
2N3971
NSN: 5961-00-005-7008
FSC: 5961
CAGE: 17856 — SILICONIX INCORPORATED DIV SILICONIX (USA)
SPECIFICATIONS
overall_length0.210 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length0.500 INCHES MINIMUM IN
overall_diameter0.195 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
features_providedHERMETICALLY SEALED CASE
precious_materialGOLD
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
terminal_circle_diameter0.100 INCHES NOMINAL IN
mounting_facility_quantity2
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
NSN5961-00-005-7008
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 2N3971 MFR OEM TRANSISTOR
KEY FEATURES
MOUNTING FACILITY QUANTITY: 2
TERMINAL LENGTH: 0.500 INCHES MINIMUM IN
POWER RATING PER CHARACTERISTIC: 0.5 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
TERMINAL TYPE AND QUANTITY: 3 UNINSULATED WIRE LEAD
MOUNTING METHOD: UNTHREADED HOLE(S)
TERMINAL CIRCLE DIAMETER: 0.100 INCHES NOMINAL IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 40.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE
INTERNAL CONFIGURATION: JUNCTION CONTACT
TECHNICAL CHARACTERISTICS (FLIS)
MOUNTING FACILITY QUANTITY2
TERMINAL LENGTH0.500 INCHES MINIMUM IN
POWER RATING PER CHARACTERISTIC0.5 WATTS MAXIMUM TOTAL DEVICE DISSIPATION
TERMINAL TYPE AND QUANTITY3 UNINSULATED WIRE LEAD
MOUNTING METHODUNTHREADED HOLE(S)
TERMINAL CIRCLE DIAMETER0.100 INCHES NOMINAL IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC40.0 MAXIMUM BREAKDOWN VOLTAGE, GATE-TO-SOURCE, WITH ALL OTHER TERMINALS SHORT-CIRCUITED TO SOURCE
INTERNAL CONFIGURATIONJUNCTION CONTACT
OVERALL DIAMETER0.230 INCHES MAXIMUM IN
SEMICONDUCTOR MATERIALSILICON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
2N3971AInterchangeable
interchangeable cross-reference
interchangeable
10195571Interchangeable
interchangeable cross-reference
interchangeable
2N3971Interchangeable
interchangeable cross-reference
interchangeable
10220020Interchangeable
interchangeable cross-reference
interchangeable
63221-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N3971?
2N3971 is a TRANSISTOR.
What parts can replace 2N3971?
There are 5 known substitutes for 2N3971: 2N3971A, 10195571, 2N3971 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2N3971?
2N3971 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-005-7008. This indicates validated use in U.S. government and defense supply chains.
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