● ISO 9001:2015 · ANSI/ESD S20.20-2021 · ERAI Member · GIDEP · Woman-Owned Small Business 760.724.2800 · 855.RH.HAS.IT · info@rhelectronics.com
Extech Instruments  · Electronic Components

MA445

Ammeter — Test Instruments

Part NumberMA445
ManufacturerExtech Instruments
AvailabilityAvailable to order — request a quote

Specifications

Federal Item NameAMMETER
Federal Supply Class6625 — Test Instruments
Indicator TypeDIGITAL DISPLAY
Circuit Current For Which DesignedDC
Power SourceINTERNAL
Display Digit Quantity4
Operating Voltage Rating In Volts9.0 DC NOMINAL
Installation DesignHANDHELD
Display TypeLIQUID CRYSTAL
Vendor Part NumbersDC400, 13017745
ESD/EMICode A — ESD/EMI sensitive item
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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

Frequently asked

Is MA445 available?
We can source MA445 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 MA445 by Extech Instruments obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MA445 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 MA445?
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 MA445?
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.