Allegro MicroSystems · Electronic Components
A3977SEDT
Motor Driver/Controller, Stepper, 3V to 5.5V supply, 35V/2.5 A/2 Outputs, LCC-44
Part NumberA3977SEDT
ManufacturerAllegro MicroSystems
AvailabilityAvailable to order — request a quote
Specifications
Automotive Qualification Standard-
RohscompliantYES
Hazardousfalse
RohsphthalatescompliantYES
Motor TypeStepper
Product Range-
IscanonicalY
Msl-
No Of Outputs2 Outputs
Output Voltage35 V
Operating Temperature Max85 °C
SvhcNo SVHC (07-Jul-2017)
Supply Voltage Max5.5 V
Output Current2.5 A
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 A3977SEDT available?
We can source A3977SEDT 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 A3977SEDT by Allegro MicroSystems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A3977SEDT 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 A3977SEDT?
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 A3977SEDT?
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.