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Technical Data Sheet
PartsTable / COMPONENT / 401291-01
401291-01 ✓ 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 CAPACITOR,FIXED,ELECTROLYTIC is a the manufacturer cache protection component designed to preserve data integrity during power loss events in enterprise server and storage controller environments. Key specifications include overall_width: 0.420 INCHES MAXIMUM IN, overall_height: 0.190 INCHES MAXIMUM IN, overall_length: 0.675 INCHES MAXIMUM IN, mounting_method: TERMINAL, 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 5961-01-012-4268, 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
401291-01
NSN: 5961-01-012-4268
FSC: 5961
CAGE: 12344 — TALLY PRINTER CORPORATION (USA)
SPECIFICATIONS
overall_width0.420 INCHES MAXIMUM IN
overall_height0.190 INCHES MAXIMUM IN
overall_length0.675 INCHES MAXIMUM IN
mounting_methodTERMINAL
special_featuresJUNCTION PATTERN ARRANGEMENT: NPN
features_providedHERMETICALLY SEALED CASE
internal_configurationJUNCTION CONTACT
semiconductor_materialSILICON
terminal_type_and_quantity3 TAB, SOLDER LUG
power_rating_per_characteristic2.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
current_rating_per_characteristic1.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 0.60 AMPERES MAXIMUM BASE CURRENT, DC
voltage_rating_in_volts_per_characteristic350.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC
NSN5961-01-012-4268
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 401291-01 MFR OEM CAPACITOR,FIXED,ELECTROLYTIC
KEY FEATURES
•
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASE: COLLECTOR
•
POWER RATING PER CHARACTERISTIC: 2.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
•
CURRENT RATING PER CHARACTERISTIC: 1.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 0.60 AMPERES MAXIMUM BASE CURRENT, DC
•
MOUNTING METHOD: TERMINAL
•
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC: 350.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC
TYPICAL APPLICATIONS
  • RAID cache protection during power loss events
  • Write-back cache enablement for storage controllers
  • Enterprise server data integrity assurance
  • Hot-swap battery/capacitor replacement in production
TECHNICAL CHARACTERISTICS (FLIS)
ELECTRODE INTERNALLY-ELECTRICALLY CONNECTED TO CASECOLLECTOR
POWER RATING PER CHARACTERISTIC2.0 WATTS MAXIMUM COLLECTOR POWER DISSIPATION
OVERALL WIDTH0.420 INCHES MAXIMUM IN
OVERALL LENGTH0.675 INCHES MAXIMUM IN
CURRENT RATING PER CHARACTERISTIC1.00 AMPERES MAXIMUM COLLECTOR CURRENT, DC AND 0.60 AMPERES MAXIMUM BASE CURRENT, DC
OVERALL HEIGHT0.190 INCHES MAXIMUM IN
MOUNTING METHODTERMINAL
VOLTAGE RATING IN VOLTS PER CHARACTERISTIC350.0 MAXIMUM COLLECTOR TO BASE VOLTAGE, DC AND 250.0 MAXIMUM COLLECTOR TO EMITTER VOLTAGE, DC AND 5.0 MAXIMUM EMITTER TO BASE VOLTAGE, DC
SPECIAL FEATURESJUNCTION PATTERN ARRANGEMENT: NPN
SEMICONDUCTOR MATERIALSILICON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
1854-0838Interchangeable
interchangeable cross-reference
interchangeable
HAT30AInterchangeable
interchangeable cross-reference
interchangeable
29-030Interchangeable
interchangeable cross-reference
interchangeable
441-1029-030Interchangeable
interchangeable cross-reference
interchangeable
57120-0029-00Interchangeable
interchangeable cross-reference
interchangeable
TIP147Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99ESD SensitiveNot HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 401291-01?
401291-01 is a CAPACITOR,FIXED,ELECTROLYTIC.
What parts can replace 401291-01?
There are 12 known substitutes for 401291-01: 1854-0838, HAT30A, 29-030 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 401291-01?
401291-01 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5961-01-012-4268. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026