Aavid Thermalloy · Electronic Components
251
THERMAL GREASE, CAN, 1LB
Part Number251
ManufacturerAavid Thermalloy
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-110-1008 (NSN)
Federal Item NameTRANSFORMER,POWER AUTOTRANSFORME
Federal Supply Class5950 — Coils and Transformers
Body Length2.813 INCHES NOMINAL
Frequency Rating60.0 HERTZ NOMINAL SINGLE COMPONENT
Terminal Type And Quantity3 TAB, SOLDER LUG
Winding Power Rating330.0 VOLTS-AMPERES SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Winding Operating Voltage0.00 AC VOLTS MINIMUM AND 132.00 AC VOLTS MAXIMUM SINGLE COMPONENT SINGLE PRIMARY OUTPUT
Input Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Inclosure TypeOPEN
Body Outside Diameter2.563 INCHES NOMINAL
Winding Function And Quantity1 PRIMARY, VARIABLE AUTOTRANSFORMER TYPE SINGLE COMPONENT
Reliability IndicatorNOT ESTABLISHED
Winding Operating Current2.5 AMPERES AC NOMINAL SINGLE COMPONENT SINGLE PRIMARY INPUT
Vendor Part Numbers250BU, 4018394-0701
Cancelled NSN5950-00-052-0692 (cancelled)
Resistance Scale Range+0.000001 TO 2000.000000 KILOHMS
Inductance Scale Range+0.0000001 TO 200.0000000 HENRY
Inductance Scale Overall Accuracy-0.25 TO 0.25
Overall Width8.500 INCHES NOMINAL
Furnished Items And QuantityCABLE SET 1
Ac Voltage Rating115.0 VOLTS NOMINAL AND 250.0 VOLTS NOMINAL
Capacitance Scale Range+0.0000001 TO 200.0000000 MICROFARADS
Resistance Scale Overall Accuracy-0.25 TO 0.25
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 251 available?
We can source 251 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 251 by Aavid Thermalloy obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 251 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 251?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 251?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.