ROHM Semiconductor · Electronic Components
UMT3904
Bipolar (BJT) Single Transistor, NPN, 40 V, 200 mA, 200 mW, SOT-323, Surface Mount
Part NumberUMT3904
ManufacturerROHM Semiconductor
AvailabilityAvailable to order — request a quote
Specifications
RohscompliantYES
Power Dissipation Pd200 mW
Hazardousfalse
RohsphthalatescompliantYES
Product Range-
IscanonicalY
Transistor Case StyleSOT-323
MslMSL 1 - Unlimited
Collector Emitter Voltage Max40 V
Operating Temperature Max150 °C
SvhcNo SVHC (25-Jun-2025)
Collector Emitter Voltage V Br Ceo40 V
Transition Frequency300 MHz
Transistor PolarityNPN
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 UMT3904 available?
We can source UMT3904 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 UMT3904 by ROHM Semiconductor obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If UMT3904 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 UMT3904?
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 UMT3904?
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.