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Technical Data Sheet
2N4428 ✓ 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: 0.250 INCHES NOMINAL IN, mounting_method: TERMINAL, terminal_length: 0.500 INCHES MINIMUM IN, overall_diameter: 0.360 INCHES NOMINAL 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 5961-00-252-1329, 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
2N4428
NSN: 5961-00-252-1329
FSC: 5961
CAGE: 31338 — SEMITRONICS CORP (USA)
SPECIFICATIONS
overall_length0.250 INCHES NOMINAL IN
mounting_methodTERMINAL
terminal_length0.500 INCHES MINIMUM IN
overall_diameter0.360 INCHES NOMINAL IN
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
terminal_circle_diameter0.200 INCHES NOMINAL IN
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
specification/standard_data80131-RELEASE5388 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
power_rating_per_characteristic3.5 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
NSN5961-00-252-1329
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 2N4428 MFR OEM TRANSISTOR
KEY FEATURES
POWER RATING PER CHARACTERISTIC: 200.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
OVERALL DIAMETER: 0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
MOUNTING METHOD: TERMINAL
SPECIFICATION/STANDARD DATA: 80131-RELEASE5388 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 200.0 CELSIUS JUNCTION DEGC
SEMICONDUCTOR MATERIAL: SILICON
TERMINAL TYPE AND QUANTITY: 3 UNINSULATED WIRE LEAD
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESJUNCTION PATTERN ARRANGEMENT: NPN
POWER RATING PER CHARACTERISTIC200.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
OVERALL DIAMETER0.350 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
MOUNTING METHODTERMINAL
SPECIFICATION/STANDARD DATA80131-RELEASE5388 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT200.0 CELSIUS JUNCTION DEGC
SEMICONDUCTOR MATERIALSILICON
TERMINAL TYPE AND QUANTITY3 UNINSULATED WIRE LEAD
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC55.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-BASE, EMITTER OPEN AND 3.5 MAXIMUM BREAKDOWN VOLTAGE, EMITTER-TO-BASE, COLLECTOR OPEN AND 35.0 MAXIMUM BREAKDOWN VOLTAGE, COLLECTOR-TO-EMITTER, BASE OPEN
OVERALL LENGTH0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
2N4430Interchangeable
interchangeable cross-reference
interchangeable
RELEASE5388Interchangeable
interchangeable cross-reference
interchangeable
912479-4Interchangeable
interchangeable cross-reference
interchangeable
2N4431Interchangeable
interchangeable cross-reference
interchangeable
2N4429Interchangeable
interchangeable cross-reference
interchangeable
SM-B-596219-8Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2N4428?
2N4428 is a TRANSISTOR.
What parts can replace 2N4428?
There are 13 known substitutes for 2N4428: 2N4430, RELEASE5388, 912479-4 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2N4428?
2N4428 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-252-1329. This indicates validated use in U.S. government and defense supply chains.
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