R5F104LEDFB#50 Equivalent & Substitute Parts

Part Overview

The R5F104LEDFB#50 is a 16-bit RL78/G14 microcontroller manufactured by Renesas Electronics Corporation, featuring 64KB FLASH memory, 5.5KB RAM, and 4KB EEPROM. This device operates at 32MHz with integrated connectivity options including CSI, I2C, LINbus, and UART/USART interfaces. The part is actively produced and maintains ROHS3 compliance with REACH unaffected status. Substitute parts are identified when electrical specifications, memory configurations, and core functionality remain identical while packaging or supply chain parameters differ.

Substiute Parts

R5F104LEDFB#50

Renesas Electronics CorporationIn Stock: 1108R5F104LEDFB#50 Datasheet

Current PartRFQ

R5F104LEAFA#50

Renesas Electronics CorporationIn Stock: 2003R5F104LEAFA#50 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the R5F104LEDFB#50 is determined by strict equivalence across the following critical parameters: RL78 core processor architecture, 16-bit core size, 32MHz operating frequency, 64KB FLASH memory capacity, 5.5KB RAM, 4KB EEPROM, 48 I/O pins, identical connectivity interfaces (CSI, I2C, LINbus, UART/USART), and matching peripheral set (DMA, LVD, POR, PWM, WDT). The substitute part R5F104LEAFA#50 maintains all electrical and functional specifications identical to the main part. Variations in physical package dimensions (10x10mm versus 12x12mm LQFP footprint) and packaging format (tube versus tape & reel) do not affect electrical compatibility or functional operation. Both parts share the same base product number R5F104, confirming core equivalence.

Parameter Comparison

Engineering Selection Recommendations

Both R5F104LEDFB#50 and R5F104LEAFA#50 are functionally equivalent and maintain active product status from Renesas Electronics Corporation. Selection between these parts should be based on supply chain availability and packaging requirements. The R5F104LEDFB#50 is supplied in tube packaging with a 10x10mm LQFP footprint, while the R5F104LEAFA#50 is supplied in tape & reel format with a 12x12mm LQFP footprint. Both parts satisfy ROHS3 compliance and REACH unaffected requirements. PCB layout considerations must account for the physical package dimension differences when transitioning between these parts, as the 2mm difference in package size may affect board routing and component placement. Electrical functionality, memory configuration, and operational characteristics remain identical across both variants.

Frequently Asked Questions (FAQ)

Q: Are R5F104LEDFB#50 and R5F104LEAFA#50 electrically identical? A: Yes. Both parts feature identical core processor architecture, clock speed, memory configuration (64KB FLASH, 5.5KB RAM, 4KB EEPROM), I/O count, connectivity interfaces, and peripheral sets. All electrical specifications and operating parameters are equivalent.

Q: What is the difference between these two part numbers? A: The primary differences are physical package dimensions and supply format. R5F104LEDFB#50 uses a 10x10mm LQFP package in tube packaging, while R5F104LEAFA#50 uses a 12x12mm LQFP package in tape & reel format. Both are 64-pin LQFP packages with different footprint sizes.

Q: Can I substitute R5F104LEAFA#50 for R5F104LEDFB#50 on an existing PCB? A: Direct PCB substitution requires layout verification. The 2mm difference in package dimensions (10x10mm versus 12x12mm) may affect component placement and routing. PCB redesign may be necessary to accommodate the larger footprint of the R5F104LEAFA#50.

Q: Do both parts have the same pin configuration? A: Both parts are 64-pin LQFP packages with 48 I/O pins. Pin configuration and functionality are identical. The difference is only in the physical package body size.

Q: What are the compliance certifications for both parts? A: Both R5F104LEDFB#50 and R5F104LEAFA#50 are ROHS3 compliant and REACH unaffected. Both maintain Moisture Sensitivity Level 3 (168 Hours).

Q: Which part should I choose for new designs? A: Selection depends on supply chain strategy and manufacturing capabilities. Tape & reel packaging (R5F104LEAFA#50) is typically preferred for high-volume automated assembly. Tube packaging (R5F104LEDFB#50) may be suitable for lower-volume or manual assembly operations. Verify availability and lead times with your supplier.