MIL-SPEC · Electronic Components
PC39J121
Capacitor, Variable, Glass Dielect
Part NumberPC39J121
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5910-00-942-0389 (NSN)
Federal Item NameCAPACITOR,VARIABLE,GLASS DIELECT
Federal Supply Class5910 — Capacitors
Nonderated Operating Temp-55.0 CELSIUS MINIMUM AND 125.0 CELSIUS MAXIMUM
Capacitance Drift In Picofarads0.08 SINGLE SECTION
Capacitance Range In Picofarads+1.0 TO 120.0 SINGLE SECTION
Bushing Width0.167 INCHES NOMINAL
Adjustment Device Drive Type And Q1 SHAFT
Bushing ShapeROUND W/FLAT
Test Data Document81349-MIL-C-14409/5 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE
Shaft Length0.125 INCHES MAXIMUM SINGLE SHAFT
Bushing Diameter0.190 INCHES NOMINAL
Bushing Length0.281 INCHES NOMINAL
Body StylePISTON
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 PC39J121 available?
We can source PC39J121 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 PC39J121 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If PC39J121 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 PC39J121?
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 PC39J121?
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.