Search the part. Verify the offer.

STM32F103C8T6 is a mainstream Arm Cortex-M3 microcontroller from STMicroelectronics with 64 KB Flash in a 48-pin LQFP package — one of the most widely designed-in 32-bit MCUs for embedded control, motor control and industrial I/O. Its advantage for procurement is ecosystem depth: toolchains, reference designs and engineer familiarity are all mature, which shortens development and second-source risk. Selection advice: the C8 density code (64 KB) is the critical match point — firmware and memory layout are qualified against a specific density, so ordering the wrong density variant risks incompatibility; the full ordering code must match your BOM character-for-character, not just the STM32F103 base name. T6 denotes the LQFP-48 package. This is also one of the most counterfeited MCU part numbers in the open market: always require lot and date-code traceability, and confirm the exact ordering code, package and documentation requirements in your RFQ — we reply within 24 hours.

STM32F407VGT6 is a high-performance Arm Cortex-M4 microcontroller from STMicroelectronics in a 100-pin LQFP package, with DSP instructions and a floating-point unit. The Cortex-M4 with FPU is the selection point over Cortex-M3 parts: signal processing, motor-control math and floating-point algorithms run far faster, which is why this part anchors industrial control, audio processing and IoT gateways. Selection advice: the VG code denotes this Flash density and the T6 the LQFP-100 package — match the full code, since the STM32F4 family spans many densities and packages. Verify your peripheral and pinout requirements against the datasheet; high-pin-count MCUs are not drop-in interchangeable across the family. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32G030F6P6 is an entry-level Arm Cortex-M0+ microcontroller from STMicroelectronics in a 20-pin TSSOP package — for compact control designs that need 32-bit performance at an 8-bit budget. The Cortex-M0+ at this price point is the selection point: it undercuts older 8-bit designs on cost while giving modern debug and toolchain support. Selection advice: the F6P6 code denotes the Flash size and TSSOP-20 package — match the full code, since the STM32G0 family spans multiple densities and packages. Confirm your peripheral and pin-count needs against the datasheet. This family is heavily counterfeited: require lot and date-code traceability. State quantity, packing and traceability requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32L072CBT6 is an ultra-low-power Arm Cortex-M0+ microcontroller from STMicroelectronics in a 48-pin LQFP package — for battery-powered and energy-harvesting connected products. The ultra-low-power design is the selection point: sleep currents in the microamp range that stretch coin-cell life to years, which is the whole point of this family. Selection advice: the CBT6 code denotes the Flash size and LQFP-48 package — match the full code to your layout. For LoRaWAN and similar LPWAN designs this is a common host MCU; confirm your radio interface and peripheral needs against the datasheet. Require lot and date-code traceability against counterfeit stock. State quantity, packing and traceability requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

ATMEGA328P-AU is an 8-bit AVR microcontroller from Microchip Technology in a 32-pin TQFP package — for embedded control and instrumentation. This is the chip behind the Arduino Uno: the largest hobbyist and educational ecosystem of any microcontroller, which means code examples and libraries for nearly every sensor. Selection advice: the AU suffix denotes TQFP-32 — the ATMEGA328P also ships in PDIP-28 (PU suffix), so match the full ATMEGA328P-AU code to your layout. The P (picoPower) variant is the low-power pick over the non-P version. Confirm your Flash and peripheral needs against the datasheet. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

ATMEGA2560-16AU is a high-pin-count 8-bit AVR microcontroller from Microchip Technology with 256 KB Flash in a 100-pin TQFP package — for I/O-heavy embedded control. The 256 KB Flash with 100-pin I/O is the selection point: the largest AVR 8-bit device, the chip behind the Arduino Mega, for designs that outgrew smaller AVRs but want to stay in the 8-bit ecosystem. Selection advice: the 16AU suffix denotes the 16 MHz speed grade in TQFP-100 — match the full code to your layout and clock requirements. If your firmware fits in 128 KB, the ATMEGA1280 is the cheaper drop-in alternative in the same package. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

ATTINY85-20SU is a compact 8-bit AVR microcontroller from Microchip Technology in an 8-pin SOIC package — for small embedded functions like LED control, button handling and simple sensor interfaces. Five usable I/O pins in an 8-pin package is the selection point: the smallest practical microcontroller for glue-logic replacement and tiny control tasks. Selection advice: the 20SU suffix denotes the 20 MHz speed grade in SOIC-8 — the ATTINY85 also ships in PDIP-8, so match the full ATTINY85-20SU code to your layout. For new tiny designs, compare against newer ATTiny 0/1-series parts on peripherals; for existing builds, match the code exactly. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

PIC16F877A-I/PT is an 8-bit PIC microcontroller from Microchip Technology in a 44-pin TQFP package, with integrated analog and serial peripherals — for embedded control, instrumentation and education. This is the classic teaching PIC: decades of textbooks, examples and programmer support make it the default for PIC-based learning and legacy industrial designs. Selection advice: the I/PT suffix denotes the industrial temperature grade in TQFP-44 — the PIC16F877A also ships in PDIP-40, so match the full PIC16F877A-I/PT code to your layout. For new designs, compare against newer PIC16F1xxx parts on peripherals and price; for existing builds and coursework, match the code exactly. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

PIC18F4550-I/PT is an 8-bit PIC18 microcontroller from Microchip Technology in a 44-pin TQFP package, with full-speed USB connectivity — for USB device designs, data acquisition and human-interface devices. The integrated USB 2.0 device peripheral is the selection point: native USB without an external bridge chip, which is why this part anchored countless DIY and industrial USB projects. Selection advice: the I/PT suffix denotes the industrial temperature grade in TQFP-44 — match the full PIC18F4550-I/PT code to your layout. Confirm your USB class and driver needs against the datasheet, and note the 5 V-tolerant I/O for mixed-voltage designs. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

ATSAMD21G18A-AU is a Microchip SAM D21 Arm Cortex-M0+ microcontroller in TQFP-48 — for low-power embedded control, USB devices and capacitive-touch interfaces. The G18A variant carries 256 KB Flash and 32 KB SRAM, runs at up to 48 MHz from 1.62 to 3.63 V, and the AU code breaks down as A = TQFP package with U = −40 to +85 °C package grade with matte Sn plating, supplied in tray. Selection advice: if your board uses the QFN-48 footprint, order ATSAMD21G18A-MU instead — it is not pin-compatible with this TQFP part — and choose the -AF grade only if you need the −40 to +125 °C rating. Ordering codes verified against the Microchip SAM D21 datasheet DS40001882, Ordering Information and Table 3-4. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

NRF52840-QIAA-R is Nordic’s flagship multiprotocol SoC — 32-bit Arm Cortex-M4F at 64 MHz with 1 MB flash and 256 KB RAM, 2.4 GHz transceiver supporting Bluetooth 5 (2 Mbps, long range, advertising extensions), 802.15.4 (Thread/Zigbee), ANT and proprietary protocols — in a 7 × 7 mm aQFN-73 package. The 1.7–5.5 V supply range runs it from a single coin cell to USB 5 V without intermediate regulators, and the on-chip USB controller plus 48 GPIOs make it a single-chip wireless product core. Selection advice: the ‘-R’ suffix is tape-and-reel packing (3,000/reel); for prototyping order cut tape. The QIAA is the 73-pin aQFN — the QFAA 48-pin variant trades GPIOs for a smaller footprint, so match the package to your I/O count before layout. Lifecycle note: Nordic’s ordering table marks this non-F QIAA variant ‘Not recommended for new designs’ — it stays listed for existing builds; the AA-F variant NRF52840-QIAA-F-R7 on this site is the aQFN-73 orderable recommended for new designs. For Bluetooth-only cost-down designs the nRF52832 or nRF52810 cover most use cases; choose the 52840 when you need the full 1 MB flash, USB, or 802.15.4 multiprotocol. Active at distribution. Parameters trace to the manufacturer datasheet; state quantity, packing and date-code requirements in your RFQ — we reconfirm the offered lot before quotation and reply within 24 hours.

NRF52832-QFAA-R is a Nordic Semiconductor multiprotocol Bluetooth Low Energy SoC in QFN-48 — for Bluetooth LE, ANT and 2.4 GHz proprietary wireless products. This QFAA variant provides 512 KB Flash and 64 KB RAM around a 64 MHz Arm Cortex-M4 with FPU, with NFC-A, 12-bit ADC and SPI, TWI, UART, PDM and I2S interfaces, developed with the nRF5 SDK and SoftDevice stacks. Selection advice: specify the exact order code in your RFQ — Nordic lists the non-G builds including NRF52832-QFAA-R as not recommended for new designs in the nRF52832 Product Specification ordering table, with the -G- builds as the current orderable equivalents; the QFAB variant differs in memory (256 KB Flash, 32 KB RAM) and is not interchangeable in firmware assumptions. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

SX1262IMLTRT is a Semtech long-range, low-power sub-GHz LoRa transceiver in QFN-24 — for LoRaWAN and proprietary LPWAN end nodes in metering, sensing, tracking and building automation. It covers 150 MHz to 960 MHz (including the 868 and 915 MHz ISM bands), transmits up to +22 dBm from its integrated power amplifier and is controlled over SPI, with integrated DC-DC and LDO regulation options and TCXO support for the 32 MHz reference. Selection advice: budget link margin on the conditioned sensitivity figures in the Semtech datasheet — −137 dBm for LoRa at 125 kHz bandwidth, SF12, Rx Boosted gain, and −148 dBm only at 10.4 kHz bandwidth, SF12 — and choose SX1262 over SX1261 when the link needs more than the SX1261's +15 dBm maximum output power. Semtech datasheet DS.SX1261-2 Rev. 2.1 lists SX1262IMLTRT as the sole SX1262 order code, tape-and-reel in the QFN 24 package. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

DW1000-I-TR13 is a Qorvo (Decawave) ultra-wideband wireless transceiver in QFN-48 — for centimeter-accurate indoor positioning, RTLS tags and secure ranging. The UWB time-of-flight measurement is the selection point: ~10 cm positioning accuracy that Bluetooth RSSI and Wi-Fi cannot deliver. Selection advice: the I-TR13 suffix denotes tape and reel for production; this is a single-chip UWB radio — plan for a UWB-capable antenna and the Decawave/Qorvo ranging software stack in your firmware budget. For simple presence detection rather than precise ranging, a cheaper Bluetooth solution may suffice. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

TMC2209-LA-T is a Trinamic (Analog Devices) two-phase stepper motor driver in QFN-28 (5 x 5 mm), tape-and-reel packing (T) — 4.75 V to 29 V motor supply, up to 1.4 A RMS continuous coil current (2 A RMS range with external sense resistors), stealthChop2 and spreadCycle chopper modes, up to 1/256 microstepping with interpolation, single-wire UART plus STEP/DIR control, stallGuard4 sensorless stall detection, coolStep adaptive current control, −40 to +125 °C. The combination of stealthChop2 and the UART interface is the selection point: near-silent motion plus full register-level tuning (current, microsteps, chopper mode, diagnostics) from the host controller, replacing the dip-switch guesswork of legacy drivers in 3D printers, automation axes and precision positioning. Selection advice: the LA code is the 5 x 5 mm QFN-28; the -T suffix is tape and reel. For standalone STEP/DIR boards pick the MS1/MS2 pin-strap microstep setting, or drive it from UART for the full feature set — note that 1.4 A RMS is the internal-sense ceiling, so above that you need external sense resistors (2 A RMS range). Trinamic/ADI lists TMC2209-LA-T as recommended for new designs. Evidence: TMC2209 datasheet (Rev. 1.09) and distributor listings confirm 4.75–29 V, 1.4 A RMS, stealthChop2, stallGuard4, QFN-28 and tape-and-reel packing. Match the full TMC2209-LA-T code. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

6N137 is a 10 MBd logic-gate optocoupler from Broadcom in a DIP-8 package, for high-speed digital isolation — isolated data interfaces, gate-drive feedback and industrial fieldbus nodes. Its advantage over transistor-output optocouplers is speed and logic compatibility: the integrated detector delivers clean 10 MBd logic-level output, where a PC817-class part tops out at kilohertz speeds. Selection advice: high-speed optocouplers need proper bypassing and layout to reach their rated speed — follow the datasheet recommendations. The 6N137 is a second-source-compatible industry type, but manufacturer datasheets differ in detail, so qualify against the Broadcom datasheet for this record. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32F407VET6 is an Arm Cortex-M4 microcontroller from STMicroelectronics with 512 KB Flash in a 100-pin LQFP package — the mid-density option of the high-performance F4 line for DSP and floating-point workloads. The 512 KB Flash with full peripheral set is the selection point: enough code space for serious firmware with the maximum pin count for I/O-heavy designs. Selection advice: the VE code denotes 512 KB Flash and T6 the LQFP-100 package — match the full code. For larger firmware, step up to the 1 MB VGT6 variant in the same package without a layout change. Require lot and date-code traceability against counterfeit stock. State quantity, packing and traceability requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32F405RGT6 is an Arm Cortex-M4 microcontroller from STMicroelectronics with 1 MB Flash in a 64-pin LQFP package — for embedded control with large firmware and DSP workloads. The 1 MB Flash in LQFP-64 is the selection point: maximum code space without moving to the 100-pin package, for feature-rich industrial and IoT firmware. Selection advice: the RG code denotes 1 MB Flash and T6 the LQFP-64 package — match the full code, since the STM32F4 family spans many densities. Like all STM32F4 parts, verify peripheral and pinout requirements against the datasheet. This family is heavily counterfeited: require lot and date-code traceability. State quantity, packing and traceability requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32F103CBT6 is a mainstream Arm Cortex-M3 microcontroller from STMicroelectronics with 128 KB Flash in a 48-pin LQFP package — the higher-density sibling of the STM32F103C8T6 for embedded control with larger firmware. Its advantage is the same mature ecosystem as the C8 with double the Flash, which suits feature-rich firmware without moving to a larger package. Selection advice: the CB density code (128 KB) is the critical match point — firmware qualified for one density must not be assumed compatible with another; match the full STM32F103CBT6 code to your BOM, not just the STM32F103 base name. Like the C8, this is a heavily counterfeited part number family: require lot and date-code traceability. State quantity, packing and traceability requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32F103RCT6 is a 32-bit Arm Cortex-M3 microcontroller from STMicroelectronics in LQFP-64 — the classic "Blue Pill" MCU for industrial control, motor drives and instrumentation. The Cortex-M3 at 72 MHz with 256 KB Flash is the selection point: a huge code and community base that keeps development fast and engineers easy to hire. Selection advice: the RC denotes 256 KB Flash / 48 KB SRAM; the T6 denotes LQFP-64. This line is mature, but ST has steered new designs toward the STM32G0/G4 families — for new products, compare the G-series before locking the BOM. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32F030C8T6 is a 32-bit Arm Cortex-M0 microcontroller from STMicroelectronics in LQFP-48 — for cost-sensitive control tasks like appliance logic, sensor hubs and simple motor control. The value-line positioning is the selection point: 32-bit performance near 8-bit pricing, so it displaces legacy 8-bit MCUs in new designs. Selection advice: the C8 denotes 64 KB Flash / 8 KB SRAM; the T6 denotes LQFP-48. For designs needing USB, CAN or more analog, step up within the STM32F0/F3 families rather than adding external chips. Widely stocked and multi-sourced through distribution. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32F030F4P6TR is a 32-bit Arm Cortex-M0 microcontroller from STMicroelectronics in TSSOP-20 — for space-constrained control tasks like small appliances, LED drivers and sensor nodes. The TSSOP-20 footprint is the selection point: 32-bit control where only an 8-pin or 20-pin device fits. Selection advice: the F4 denotes 16 KB Flash / 4 KB SRAM — the smallest STM32F0; the P6TR denotes TSSOP-20 in tape and reel. If your code outgrows 16 KB, step to the F030C8 before re-spinning the board. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32H743VIT6 is a 32-bit Arm Cortex-M7 microcontroller from STMicroelectronics in LQFP-100 — for high-performance control: motor drives, HMIs and edge processing. The 480 MHz Cortex-M7 with 2 MB Flash is the selection point: MCU simplicity with near-MPU compute for DSP-heavy control loops. Selection advice: the VIT6 denotes LQFP-100; the H743 is the performance line — for cost-sensitive designs without the DSP load, an STM32F4 or G4 delivers similar control at lower cost and power. Thermal design matters at these clock speeds; follow ST's power and decoupling guidance. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.

STM32H573IIK3Q is a 32-bit Arm Cortex-M33 microcontroller from STMicroelectronics in UFBGA — for connected devices needing hardware security: smart meters, gateways and access control. The TrustZone isolation is the selection point: secure and non-secure code run in hardware-separated worlds, a requirement class that plain Cortex-M parts cannot meet. Selection advice: the Q suffix denotes the UFBGA package — confirm your assembly house handles fine-pitch BGA. For designs without hard security requirements, the STM32H5 without TrustZone provisioning (or an STM32G4) is simpler to bring up. State quantity, packing and date-code requirements in your RFQ; we reconfirm the offered lot before quotation and reply within 24 hours.