R5F51138ADFP#3A Equivalent & Substitute Parts

Part Overview

The R5F51138ADFP#3A is a 32-bit single-core RX microcontroller manufactured by Renesas Electronics Corporation, designed for embedded applications requiring moderate processing capability and integrated connectivity. This device features 512KB of FLASH program memory, 64KB of RAM, and 8KB of EEPROM, operating at 32MHz with a supply voltage range of 1.8V to 3.6V. The part is housed in a 100-LFQFP surface mount package and maintains Active product status with full RoHS3 compliance. Substitute parts are identified when electrical specifications, memory configurations, package type, and operational parameters remain identical across manufacturing lots or packaging variants.

Substiute Parts

R5F51138ADFP#3A

Renesas Electronics CorporationIn Stock: 1222R5F51138ADFP#3A Datasheet

Current PartRFQ

R5F51138ADFP#1A

Renesas Electronics CorporationIn Stock: 1725R5F51138ADFP#1A Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The R5F51138ADFP#1A qualifies as a parametric equivalent to the R5F51138ADFP#3A based on strict alignment of the following critical parameters:

Core electrical specifications remain identical: 32-bit single-core RX processor architecture, 32MHz clock speed, 512KB FLASH memory, 64KB RAM, and 8KB EEPROM configuration. Supply voltage range, data converter specifications (A/D 17x12b and D/A 2x12b), and I/O count (82 pins) are unchanged. The 100-LFQFP surface mount package, pin configuration, and mechanical dimensions are identical. Both parts maintain Active product status, ROHS3 compliance, and identical moisture sensitivity classification. The substitution is based solely on packaging lot designation differences (suffix #3A versus #1A), which do not alter functional or electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both the R5F51138ADFP#3A and R5F51138ADFP#1A maintain Active product status with identical compliance certifications. Selection between these parts is determined by availability and supply chain requirements rather than functional differentiation. The R5F51138ADFP#1A currently maintains higher inventory availability (1655 units) compared to the R5F51138ADFP#3A (1151 units). Both parts satisfy ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment for industrial and consumer applications. Moisture sensitivity level 3 classification applies uniformly, requiring standard dry storage and handling protocols for both variants.

Frequently Asked Questions (FAQ)

Q: Are R5F51138ADFP#3A and R5F51138ADFP#1A electrically interchangeable?

A: Yes. Both parts are identical in electrical specifications, memory configuration, clock speed, I/O count, and data converter capabilities. The suffix designation reflects packaging lot differences only and does not affect functional performance.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. Both parts use the 100-LFQFP surface mount package with identical pin configuration, mechanical dimensions (14x14mm), and pinout. No PCB layout modifications are required when substituting between these variants.

Q: What is the significance of the #3A and #1A suffix?

A: The suffix designates the packaging lot or manufacturing batch identifier assigned by Renesas Electronics Corporation. These designations do not indicate functional, electrical, or performance differences between parts.

Q: Are there any supply voltage or temperature rating differences?

A: No. Both parts operate across the identical supply voltage range of 1.8V to 3.6V and maintain the same operating temperature range of -40°C to 85°C (TA).

Q: Do both parts require identical handling and storage conditions?

A: Yes. Both parts carry Moisture Sensitivity Level 3 (168 Hours) classification, requiring equivalent dry storage, handling protocols, and reflow soldering procedures.

Q: Which part should be selected for new designs?

A: Selection is based on current availability and supply chain logistics. Both parts are Active status and fully supported by Renesas Electronics Corporation. Verify current inventory levels with your component supplier for procurement decisions.