Amperite Co Inc. · Electronic Components
3-4
Resistor, Current Regulating
Part Number3-4
ManufacturerAmperite Co Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-272-6649 (NSN)
Federal Item NameRESISTOR,CURRENT REGULATING
Federal Supply Class5905 — Resistors
Base TypeOCTAL
Resistive Element Pin Connection2 AND 7
Current TypeAC/DC
Envelope Type Per Mil E 1T6-112
Threshold Voltage In Volts4.0
Current Range In Amps+0.280 TO 0.320
Vendor Part NumbersAMP3-4
ESD/EMICode B — ESD/EMI sensitive item
Overall Length2.406 INCHES NOMINAL
Overall Diameter1.812 INCHES NOMINAL
Mounting Facility Type And Quantit1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
MaterialSTEEL
Distance From Retainer Center To C1.219 INCHES NOMINAL
Accommodated Item Securing DeviceCOMPRESSION RING
Unthreaded Mounting Hole Diameter0.138 INCHES NOMINAL SINGLE MOUNTING FACILITY
Eia Electron Tube Envelope AccommoT11
Style DesignatorPLAIN CAP HOLD DOWN W/ SCREW
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 3-4 available?
We can source 3-4 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 3-4 by Amperite Co Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 3-4 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 3-4?
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 3-4?
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.