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Technical Data Sheet
2N6121 ✓ 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_width: 0.420 INCHES MAXIMUM IN, overall_height: 0.190 INCHES MAXIMUM IN, overall_length: 0.650 INCHES MAXIMUM IN, mounting_method: UNTHREADED HOLE(S), 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 5961-01-102-7808, 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
2N6121
NSN: 5961-01-102-7808
FSC: 5961
CAGE: 80131 — ELECTRONIC INDUSTRIES ASSOCIATION
SPECIFICATIONS
overall_width0.420 INCHES MAXIMUM IN
overall_height0.190 INCHES MAXIMUM IN
overall_length0.650 INCHES MAXIMUM IN
mounting_methodUNTHREADED HOLE(S)
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
mounting_facility_quantity1
terminal_type_and_quantity3 TAB, SOLDER LUG
specification/standard_data80131-RELEASE6295 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
power_rating_per_characteristic40.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
NSN5961-01-102-7808
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 2N6121 MFR OEM TRANSISTOR
KEY FEATURES
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASE: COLLECTOR
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 150.0 CELSIUS JUNCTION DEGC
CURRENT RATING PER CHARACTERISTIC: 4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 AMPERES MAXIMUM BASE CURRENT, DC
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATION: TO-220AB
INTERNAL CONFIGURATION: JUNCTION CONTACT
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 45.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN AND 45.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN
TECHNICAL CHARACTERISTICS (FLIS)
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASECOLLECTOR
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT150.0 CELSIUS JUNCTION DEGC
CURRENT RATING PER CHARACTERISTIC4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 1.00 AMPERES MAXIMUM BASE CURRENT, DC
JOINT ELECTRONIC DEVICE ENGINEERING COUNCIL/JEDEC/CASE OUTLINE DESIGNATIONTO-220AB
OVERALL HEIGHT0.190 INCHES MAXIMUM IN
INTERNAL CONFIGURATIONJUNCTION CONTACT
OVERALL WIDTH0.420 INCHES MAXIMUM IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC45.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN AND 45.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN
MOUNTING METHODUNTHREADED HOLE(S)
SPECIAL FEATURESJUNCTION PATTERN ARRANGEMENT: NPN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
2N6107Interchangeable
interchangeable cross-reference
interchangeable
A127142-07Interchangeable
interchangeable cross-reference
interchangeable
99094951Interchangeable
interchangeable cross-reference
interchangeable
2N6123Interchangeable
interchangeable cross-reference
interchangeable
RELEASE6295Interchangeable
interchangeable cross-reference
interchangeable
2N6124Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N6121?
2N6121 is a TRANSISTOR.
What parts can replace 2N6121?
There are 7 known substitutes for 2N6121: 2N6107, A127142-07, 99094951 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2N6121?
2N6121 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-102-7808. This indicates validated use in U.S. government and defense supply chains.
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