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Technical Data Sheet
2N3878 ✓ 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: 0.700 INCHES MAXIMUM IN, overall_height: 0.340 INCHES MAXIMUM IN, overall_length: 0.250 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN, mounting_method: UNTHREADED HOLE(S), overall_diameter: 0.620 INCHES MAXIMUM IN, special_features: JUNCTION PATTERN ARRANGEMENT: NPN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-105-1967, 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
2N3878
NSN: 5961-00-105-1967
FSC: 5961
CAGE: 34371 — RENESAS ELECTRONICS AMERICA INC (USA)
SPECIFICATIONS
overall_width0.700 INCHES MAXIMUM IN
overall_height0.340 INCHES MAXIMUM IN
overall_length0.250 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN
mounting_methodUNTHREADED HOLE(S)
overall_diameter0.620 INCHES MAXIMUM IN
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
mounting_facility_quantity2
terminal_type_and_quantity1 CASE AND 2 PIN
specification/standard_data81349-MIL-S-19500/526 GOVERNMENT SPECIFICATION
NSN5961-00-105-1967
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 2N3878 MFR OEM TRANSISTOR
KEY FEATURES
FEATURES PROVIDED: HERMETICALLY SEALED CASEHERMETICALLY SEALED CASE
CURRENT RATING PER CHARACTERISTIC: 4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 4.00 AMPERES MAXIMUM BASE CURRENT, DC4.00 AMPERES MAXIMUM BASE CURRENT, DC
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASE: COLLECTORCOLLECTOR
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
SEMICONDUCTOR MATERIAL: SILICONSILICON
OVERALL DIAMETER: 0.620 INCHES MAXIMUM0.620 INCHES MAXIMUM IN
POWER RATING PER CHARACTERISTIC: 35.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION35.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
INTERNAL JUNCTION CONFIGURATION: NPNNPN
TECHNICAL CHARACTERISTICS (FLIS)
FEATURES PROVIDEDHERMETICALLY SEALED CASEHERMETICALLY SEALED CASE
CURRENT RATING PER CHARACTERISTIC4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 4.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 4.00 AMPERES MAXIMUM BASE CURRENT, DC4.00 AMPERES MAXIMUM BASE CURRENT, DC
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASECOLLECTORCOLLECTOR
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 120.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 50.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN AND 7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN7.0 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN
SEMICONDUCTOR MATERIALSILICONSILICON
OVERALL DIAMETER0.620 INCHES MAXIMUM0.620 INCHES MAXIMUM IN
POWER RATING PER CHARACTERISTIC35.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION35.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
INTERNAL JUNCTION CONFIGURATIONNPNNPN
MOUNTING FACILITY QUANTITY22
INTERNAL CONFIGURATIONJUNCTION CONTACTJUNCTION CONTACT
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
2N3878Interchangeable
interchangeable cross-reference
interchangeable
7000555-001Interchangeable
interchangeable cross-reference
interchangeable
T065-509-0001Interchangeable
interchangeable cross-reference
interchangeable
6L.5512.400.00-513866Interchangeable
interchangeable cross-reference
interchangeable
2N3879Interchangeable
interchangeable cross-reference
interchangeable
40364Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N3878?
2N3878 is a TRANSISTOR.
What parts can replace 2N3878?
There are 13 known substitutes for 2N3878: 2N3878, 7000555-001, T065-509-0001 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2N3878?
2N3878 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-105-1967. This indicates validated use in U.S. government and defense supply chains.
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