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Technical Data Sheet
19978 ✓ Verified by PartsTable
Trust · MRO · MRO_GENERAL
WHAT YOU NEED TO KNOW
Always quote matching pair — mixed wattage causes throttling Platinum/Titanium = higher efficiency = lower power cost over time
AC or DC input? Verify customer site power
PRODUCT OVERVIEW

Easily backup photos and files from your tablet/smartphone Micro-SD card. High speed copy movies and music to your tablet/smartphone Micro-SD card. Up to 10x faster than file transfer with a cable.

Ultra small, easy to take with you. Also works with SDHC, SDXC & UHS cards. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 6130-00-484-9289, 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
MRO MRO_GENERAL 19978
NSN: 6130-00-484-9289
FSC: 6130
CAGE: 09004 — TRANSISTOR DEVICES INC DIV ASTRODYNE TDI HIGH POWER BUSINESS UNIT (USA)
SPECIFICATIONS
switch_typeROTARY
overall_width2.180 INCHES MAXIMUM IN
inclosure_typeFULLY INCLOSED
overall_height1.888 INCHES NOMINAL IN
overall_length4.000 INCHES NOMINAL IN
mounting_methodBRACKET(S) AND HOLE
major_componentsRECTIFIER 1,TRANSFORMER 1
precious_materialGOLD
controlling_agencyLINK DIVISION SINGER-GENERAL PRECISION INC
identifying_numberS27 DRAWING NO.
inclosure_materialPLASTIC
mounting_configurationFOUR 0.140 IN. DIA MTG HOLES ON 3.575 IN. BY 1.565 IN. MTG CENTERS IN
NSN6130-00-484-9289
COMPONENT DIAGRAM
PULL TAB AIRFLOW —W PLATINUM 100-240V~ 50/60Hz Trust BACKPLANE CONN ~200 mm HOT-PLUG POWER SUPPLY | —W | Platinum AC input 100-240V | Redundant pair required | Match wattage in same chassis TITLE PSU —W PN 19978 MFR Trust Platinum
KEY FEATURES
MAJOR COMPONENTS: RECTIFIER 1,TRANSFORMER 1
MOUNTING CONFIGURATION: FOUR 0.187 IN. DIA MTG HOLES ON 2.437 IN. BY 2.406 IN. MTG CENTERS IN
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH3.620 INCHES NOMINAL IN
MAJOR COMPONENTSRECTIFIER 1,TRANSFORMER 1
OVERALL WIDTH3.120 INCHES NOMINAL IN
OVERALL HEIGHT1.620 INCHES NOMINAL IN
END ITEM IDENTIFICATIONPOWER SUPPLY P/N 2129460-1
MOUNTING CONFIGURATIONFOUR 0.187 IN. DIA MTG HOLES ON 2.437 IN. BY 2.406 IN. MTG CENTERS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
S27-1Interchangeable
interchangeable cross-reference
interchangeable
19978Interchangeable
interchangeable cross-reference
interchangeable
5906Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 19978?
19978 is a SWITCH,SENSITIVE manufactured by Trust. It is classified as a MRO (MRO_GENERAL).
What parts can replace 19978?
There are 3 known substitutes for 19978: S27-1, 19978, 5906. Substitute compatibility should be verified for your specific system.
What is the NSN for 19978?
19978 is cataloged in the Federal Logistics Information System (FLIS) under NSN 6130-00-484-9289. This indicates validated use in U.S. government and defense supply chains.
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