10,000+ Happy Customers
20+ Years in Business
75,000+ SKUs in Stock
80+ Authorized Manufacturers
Helping Tech Companies Create What’s Next!
phoneCall +1.949.783.7300
GET A
QUOTE

Electronic Parts Search

Suntsu Electronics is your reliable source for hard-to-find and obsolete electronic components. Our advanced part search tool makes it easy to quickly find the products you need. You can search by part number, manufacturer, or specifications to instantly access a comprehensive database of electronic components.

Featured Brands

Part Search

CLEAR SEARCH
Total Products: 220,048
ImageData
Sheet		Part NumberManufacturerDescriptionCategoryDevice PackageVoltageOperating
Temp		Additional SpecificationsQtyGet A
Quote
C8051F545-IQR
C8051F545-IQRSilicon LabsIC MCU 8BIT 8KB FLASH 32LQFPMicrocontrollers32-LQFP (7x7)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
25
Program Memory Size:
8KB (8K x 8)
Program Memory Type:
FLASH
RAM Size:
1.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 25x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
32-LQFP (7×7)
Package / Case:
32-LQFP
261
GET A
QUOTE
C8051F546-IM
C8051F546-IMSilicon LabsIC MCU 8BIT 8KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
8KB (8K x 8)
Program Memory Type:
FLASH
RAM Size:
1.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
891
GET A
QUOTE
C8051F546-IMR
C8051F546-IMRSilicon LabsIC MCU 8BIT 8KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
8KB (8K x 8)
Program Memory Type:
FLASH
RAM Size:
1.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
1,124
GET A
QUOTE
C8051F547-IM
C8051F547-IMSilicon LabsIC MCU 8BIT 8KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
8KB (8K x 8)
Program Memory Type:
FLASH
RAM Size:
1.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
729
GET A
QUOTE
C8051F547-IMR
C8051F547-IMRSilicon LabsIC MCU 8BIT 8KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
8KB (8K x 8)
Program Memory Type:
FLASH
RAM Size:
1.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
721
GET A
QUOTE
C8051F550-IM
C8051F550-IMSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
1,358
GET A
QUOTE
C8051F550-IMR
C8051F550-IMRSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
317
GET A
QUOTE
C8051F551-IM
C8051F551-IMSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
1,225
GET A
QUOTE
C8051F551-IMR
C8051F551-IMRSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
32
GET A
QUOTE
C8051F552-IM
C8051F552-IMSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
1,232
GET A
QUOTE
C8051F552-IMR
C8051F552-IMRSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
219
GET A
QUOTE
C8051F553-IM
C8051F553-IMSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
271
GET A
QUOTE
C8051F553-IMR
C8051F553-IMRSilicon LabsIC MCU 8BIT 32KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
32KB (32K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
655
GET A
QUOTE
C8051F554-IM
C8051F554-IMSilicon LabsIC MCU 8BIT 16KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
16KB (16K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
616
GET A
QUOTE
C8051F554-IMR
C8051F554-IMRSilicon LabsIC MCU 8BIT 16KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
16KB (16K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
317
GET A
QUOTE
C8051F555-IM
C8051F555-IMSilicon LabsIC MCU 8BIT 16KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
16KB (16K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
125
GET A
QUOTE
C8051F555-IMR
C8051F555-IMRSilicon LabsIC MCU 8BIT 16KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), CANbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
16KB (16K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
1,070
GET A
QUOTE
C8051F556-IM
C8051F556-IMSilicon LabsIC MCU 8BIT 16KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
16KB (16K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
1,855
GET A
QUOTE
C8051F556-IMR
C8051F556-IMRSilicon LabsIC MCU 8BIT 16KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), LINbus, SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
16KB (16K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
376
GET A
QUOTE
C8051F557-IM
C8051F557-IMSilicon LabsIC MCU 8BIT 16KB FLASH 24QFNMicrocontrollers24-QFN (4x4)N/A-40°C ~ 125°C (TA)
Core Processor:
8051
Core Size:
8-Bit
Speed:
50MHz
Connectivity:
SMBus (2-Wire/I2C), SPI, UART/USART
Peripherals:
POR, PWM, Temp Sensor, WDT
Number of I/O:
18
Program Memory Size:
16KB (16K x 8)
Program Memory Type:
FLASH
RAM Size:
2.25K x 8
Voltage – Supply (Vcc/Vdd):
1.8V ~ 5.25V
Data Converters:
A/D 18x12b
Oscillator Type:
Internal
Operating Temperature:
-40°C ~ 125°C (TA)
Mounting Type:
Surface Mount
Supplier Device Package:
24-QFN (4×4)
Package / Case:
24-WFQFN Exposed Pad
1,707
GET A
QUOTE

We’ve Got You Covered!

If you can’t find the parts you’re looking for in our database, don’t worry! We’re here to help. Simply fill out the form below with the part number you need and your contact information, and we’ll locate it for you. If you prefer to speak to someone directly, our sales team is available at 949.783.7300.

























    I agree to receive newsletters and promotional emails. I can unsubscribe at any time.


    Global Sourcing Capabilities

    Tap into our global network of suppliers to find the components you need. We simplify procurement, even for hard-to-find parts, saving you time and ensuring smooth production.

    Second Sourcing  Second Sourcing Solutions

    Don’t let supply chain disruptions delay your project. We’ll help you identify alternative components and secure reliable secondary sources to keep your production on track.

    Obsolescence Management  Obsolescence Management

    Outsmart obsolescence and ensure your designs stay in production. We’ll help you navigate component lifecycles, secure long-term supply, and find smart alternatives when parts are discontinued.

    Shortage Mitigation  Shortage Mitigation

    Forget supply chain worries. Our team specializes in navigating the unpredictable component market, leveraging our global network and deep expertise to help you find the necessary components when you need them.

























      I agree to receive newsletters and promotional emails. I can unsubscribe at any time.


      keyboard_arrow_up