Rockwell Automation, Inc. · Electronic Components
BB1255
Resistor, Fixed, Composition
Part NumberBB1255
ManufacturerRockwell Automation, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5905-00-617-8031 (NSN)
Federal Item NameRESISTOR,FIXED,COMPOSITION
Federal Supply Class5905 — Resistors
Body Diameter0.062 INCHES NOMINAL
Body Length0.145 INCHES NOMINAL
Power Dissipation Rating In Watts0.125 FREE AIR
Terminal TypeWIRE LEAD
Ambient Temp At Full Rated Power70.0 CELSIUS
Ambient Temp In Deg Celsius At Zer130.0
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeENCAPSULATED
Style DesignatorAXIAL TERMINAL EACH END
Resistance Tolerance In Percent-5.000 TO 5.000
Electrical Resistance1.200 MEGOHMS
Vendor Part Numbers40-524-2135-12
Cancelled NSN5905-00-912-2947 (cancelled)
ESD/EMICode A — ESD/EMI sensitive item
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 BB1255 available?
We can source BB1255 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 BB1255 by Rockwell Automation, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If BB1255 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 BB1255?
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 BB1255?
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.