EFM8LB10F16E-B-QFN24R Equivalent & Substitute Parts

Part Overview

The EFM8LB10F16E-B-QFN24R is a CIP-51 8051 Laser Bee microcontroller IC manufactured by Silicon Labs. This 8-bit embedded processor operates at 72MHz with 16KB FLASH program memory and is housed in a 24-QFN (3x3) surface mount package. The device integrates I2C, SMBus, SPI, and UART/USART connectivity interfaces with integrated peripherals including brown-out detection, power-on reset, PWM, and watchdog timer functionality.

The EFM8LB10F16E-B-QFN24R carries an Obsolete product status. Locating equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or maintenance requirements for systems utilizing this microcontroller.

Substiute Parts

EFM8LB10F16E-B-QFN24R

Silicon LabsIn Stock: 990EFM8LB10F16E-B-QFN24R Datasheet

Current PartRFQ

EFM8LB10F16E-C-QFN24R

Silicon LabsIn Stock: 1204EFM8LB10F16E-C-QFN24R Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the EFM8LB10F16E-B-QFN24R is determined by strict equivalence across the following critical parameters:

Core Architecture & Performance: The substitute part must utilize the identical CIP-51 8051 core processor architecture, operate at 72MHz, and maintain 8-bit core size to ensure instruction set compatibility and performance parity.

Memory Configuration: Program memory must be 16KB FLASH (16K x 8) and RAM must be 1.25K x 8 to guarantee software compatibility and functional equivalence.

Electrical Specifications: Supply voltage range must be 2.2V ~ 3.6V, and data converter specifications must match at A/D 12x14b to ensure circuit-level compatibility.

Connectivity & Peripherals: I2C, SMBus, SPI, and UART/USART interfaces must be present. Brown-out detection, power-on reset, PWM, and watchdog timer functionality must be included.

Physical Package: The 24-QFN (3x3) surface mount package with 24-VFQFN exposed pad configuration and 20 I/O pins must be maintained for PCB layout compatibility.

Operating Conditions: Operating temperature range of -40°C ~ 105°C (TA) and MSL rating of 2 (1 Year) must be preserved.

The EFM8LB10F16E-C-QFN24R qualifies as a direct substitute based on complete alignment with all specified parameters.

Parameter Comparison

Engineering Selection Recommendations

The EFM8LB10F16E-C-QFN24R is the qualified substitute for the EFM8LB10F16E-B-QFN24R. Both parts share identical electrical, functional, and physical specifications across all critical parameters.

The primary distinction between these parts is product status and packaging configuration. The main part (EFM8LB10F16E-B-QFN24R) is classified as Obsolete, while the substitute (EFM8LB10F16E-C-QFN24R) maintains Active product status. The substitute is supplied in Tape & Reel (TR) packaging, which is the standard distribution format for active production components.

The substitute part carries RoHS3 compliance certification, confirming adherence to current environmental and hazardous substance restrictions. Both parts maintain identical MSL ratings and are suitable for equivalent thermal and moisture handling requirements.

From an engineering perspective, the EFM8LB10F16E-C-QFN24R provides direct functional replacement with the added benefit of active product support and current supply chain availability.

Frequently Asked Questions (FAQ)

Q: Are the EFM8LB10F16E-B-QFN24R and EFM8LB10F16E-C-QFN24R pin-compatible?

A: Yes. Both parts utilize the identical 24-QFN (3x3) package with 20 I/O pins in the 24-VFQFN exposed pad configuration. PCB layouts and footprints are directly interchangeable.

Q: Will firmware compiled for the EFM8LB10F16E-B-QFN24R execute on the EFM8LB10F16E-C-QFN24R?

A: Yes. Both parts implement the identical CIP-51 8051 core processor architecture, instruction set, and memory configuration (16KB FLASH, 1.25K x 8 RAM). Firmware compatibility is complete.

Q: What is the difference between the "B" and "C" designations in the part numbers?

A: The "B" and "C" designations indicate different product lifecycle stages and packaging configurations. The "B" variant is Obsolete, while the "C" variant maintains Active status with Tape & Reel packaging. The electrical and functional specifications are identical.

Q: Are there any compliance or certification differences between these parts?

A: The EFM8LB10F16E-C-QFN24R carries explicit RoHS3 compliance certification. Both parts maintain identical MSL ratings of 2 (1 Year) and equivalent ECCN and HTSUS classifications.

Q: Can the EFM8LB10F16E-C-QFN24R be used as a direct drop-in replacement in existing designs?

A: Yes. Identical electrical specifications, pin configuration, package dimensions, and functional capabilities enable direct substitution without design modifications.

Q: What supply voltage range is supported by both parts?

A: Both the EFM8LB10F16E-B-QFN24R and EFM8LB10F16E-C-QFN24R operate across a supply voltage range of 2.2V to 3.6V (Vcc/Vdd).

Q: Are the connectivity interfaces identical between these parts?

A: Yes. Both parts integrate I2C, SMBus, SPI, and UART/USART interfaces. Peripheral features including brown-out detection, power-on reset, PWM, and watchdog timer are identical.