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Technical Data Sheet
ST1056 ✓ 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: 0.235 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN, mounting_method: TERMINAL, terminal_length: 1.500 INCHES MINIMUM IN, overall_diameter: 0.340 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN, features_provided: HERMETICALLY SEALED CASE, internal_configuration: JUNCTION CONTACT. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-807-7878, 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
ST1056
NSN: 5961-00-807-7878
FSC: 5961
CAGE: 03877 — GILBERT ENGINEERING CO INC/INCON SUB OF TRANSITRON ELECTRONIC CORP (USA)
SPECIFICATIONS
overall_length0.235 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
mounting_methodTERMINAL
terminal_length1.500 INCHES MINIMUM IN
overall_diameter0.340 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
terminal_circle_diameter0.200 INCHES NOMINAL IN
terminal_type_and_quantity3 UNINSULATED WIRE LEAD
internal_junction_configurationNPN
power_rating_per_characteristic150.0 MILLIWATTS MAXIMUM COLLECTOR POWER DISSIPATION
current_rating_per_characteristic25.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
NSN5961-00-807-7878
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 ST1056 MFR OEM TRANSISTOR
KEY FEATURES
INTERNAL JUNCTION CONFIGURATION: NPN
CURRENT RATING PER CHARACTERISTIC: 25.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
TERMINAL LENGTH: 1.500 INCHES MINIMUM IN
INTERNAL CONFIGURATION: JUNCTION CONTACT
TERMINAL TYPE AND QUANTITY: 3 UNINSULATED WIRE LEAD
FEATURES PROVIDED: HERMETICALLY SEALED CASE
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT: 175.0 CELSIUS AMBIENT AIR DEGC
OVERALL DIAMETER: 0.340 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
TECHNICAL CHARACTERISTICS (FLIS)
INTERNAL JUNCTION CONFIGURATIONNPN
CURRENT RATING PER CHARACTERISTIC25.00 MILLIAMPERES MAXIMUM COLLECTOR CURRENT, DC
TERMINAL LENGTH1.500 INCHES MINIMUM IN
INTERNAL CONFIGURATIONJUNCTION CONTACT
TERMINAL TYPE AND QUANTITY3 UNINSULATED WIRE LEAD
FEATURES PROVIDEDHERMETICALLY SEALED CASE
MAXIMUM OPERATING TEMP PER MEASUREMENT POINT175.0 CELSIUS AMBIENT AIR DEGC
OVERALL DIAMETER0.340 INCHES MINIMUM AND 0.370 INCHES MAXIMUM IN
OVERALL LENGTH0.235 INCHES MINIMUM AND 0.260 INCHES MAXIMUM IN
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC45.0 MAXIMUM COLLECTOR TO BASE VOLTAGE/STATIC/EMITTER OPEN AND 45.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE/STATIC/BASE OPEN AND 1.0 MAXIMUM EMITTER TO BASE VOLTAGE, STATIC, COLLECTOR OPEN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
358-1040-000Interchangeable
interchangeable cross-reference
interchangeable
B35272Interchangeable
interchangeable cross-reference
interchangeable
A219Interchangeable
interchangeable cross-reference
interchangeable
J300Interchangeable
interchangeable cross-reference
interchangeable
W300AInterchangeable
interchangeable cross-reference
interchangeable
4JX4C812Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is ST1056?
ST1056 is a TRANSISTOR.
What parts can replace ST1056?
There are 6 known substitutes for ST1056: 358-1040-000, B35272, A219 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for ST1056?
ST1056 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-00-807-7878. This indicates validated use in U.S. government and defense supply chains.
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