STMicroelectronics · Electronic Components
STM32F103RB
Mainstream Performance line, Arm Cortex-M3 MCU with 128 Kbytes of Flash memory, 72 MHz CPU, motor control, USB and CAN
Part NumberSTM32F103RB
ManufacturerSTMicroelectronics
AvailabilityAvailable to order — request a quote
Specifications
SeriesSTM32F1
PackageLQFP 64 10x10x1.4 mm, TFBGA 64 5x5x1.2 P 0.5 mm
CoreArm Cortex-M3
Frequency Mhz72
Flash Kb128.0
Ram Kb20.0
InterfacesI2C: 2; SPI: 2; USART: 3; USB: USB Device; CAN2.0: 1
AnalogADC12: 2 conv / 16 ch
Timers16-bit timers: 4; Other: Dual Watchdog, RTC, SysTick
Supply Voltage2.0–3.6 V
Temp Range-40.0 to 105.0 °C
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 STM32F103RB available?
We can source STM32F103RB 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 STM32F103RB by STMicroelectronics obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If STM32F103RB 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 STM32F103RB?
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 STM32F103RB?
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.