Equivalent & Substitute Parts: R2043L-E2

Part Overview

The R2043L-E2 is a Real Time Clock (RTC) IC manufactured by Nisshinbo Micro Devices Inc. featuring a 4-wire serial interface for clock and calendar functionality. This component is classified as Last Time Buy, indicating that the original manufacturer has discontinued or will discontinue production. The identification of equivalent and substitute parts is necessary to ensure continued availability and design continuity for applications requiring RTC functionality with compatible electrical and mechanical specifications.

Substiute Parts

R2043L-E2

Nisshinbo Micro Devices Inc.In Stock: 703R2043L-E2 Datasheet

Current PartRFQ

R2043T-E2-F

Nisshinbo Micro Devices Inc.In Stock: 22475R2043T-E2-F Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The R2043T-E2-F qualifies as a substitute for the R2043L-E2 based on the following criteria:

Shared Base Product Number: Both components are derived from the R2043 base product family, indicating common core functionality and design lineage.

Identical Manufacturer: Both parts are manufactured by Nisshinbo Micro Devices Inc., ensuring consistency in design standards and quality control.

Matching Category: Both components are classified as Clock/Timing devices, confirming functional equivalence in application domain.

Regulatory Compliance Alignment: Both parts maintain RoHS compliance status and carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, ensuring regulatory interchangeability.

Moisture Sensitivity Equivalence: Both parts share MSL Level 1 (Unlimited), indicating identical handling and storage requirements.

Interface Compatibility: Both components feature 4-wire serial interface architecture, enabling direct functional substitution in serial communication applications.

Parameter Comparison

Engineering Selection Recommendations

Active Product Status: The R2043T-E2-F maintains Active product status with 22,459 units in stock, providing assured long-term availability compared to the Last Time Buy status of the R2043L-E2.

Regulatory Compliance: Both components satisfy RoHS compliance requirements. The R2043T-E2-F carries ROHS3 certification, representing the current regulatory standard.

Supply Chain Continuity: Selection of the R2043T-E2-F ensures design continuity and eliminates obsolescence risk associated with Last Time Buy components.

Identical Regulatory Classification: Both parts share EAR99 ECCN and 8542.39.0001 HTSUS classifications, confirming export and tariff equivalence.

Moisture Handling: Matching MSL Level 1 ratings eliminate any changes to component handling, storage, or assembly procedures.

Frequently Asked Questions (FAQ)

Q: Can the R2043T-E2-F directly replace the R2043L-E2 in existing designs?

A: Yes. Both components share the same base product number (R2043), identical manufacturer, matching 4-wire serial interface, and equivalent regulatory classifications. The R2043T-E2-F is the active production equivalent.

Q: What is the significance of the Last Time Buy status for the R2043L-E2?

A: Last Time Buy indicates that the manufacturer has ceased or will cease production of this component. The R2043T-E2-F, with Active status, represents the current production alternative within the R2043 product family.

Q: Are there packaging differences between these parts?

A: Both components are supplied in Tape & Reel (TR) packaging. The R2043T-E2-F specifies a 10-TSSOPG supplier device package with 10-VFSOP, 10-MSOP (0.110", 2.80mm Width) case dimensions. Verify PCB footprint compatibility with your design specifications.

Q: Do these components have identical moisture sensitivity requirements?

A: Yes. Both parts carry MSL Level 1 (Unlimited) ratings, indicating no moisture sensitivity restrictions and identical handling requirements throughout the supply chain and assembly process.

Q: Are there regulatory or export restrictions affecting either component?

A: Both components carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming equivalent regulatory treatment for export and tariff purposes.

Q: What electrical parameters should be verified for substitution?

A: The R2043T-E2-F provides specified operating parameters: supply voltage 1.7V ~ 5.5V, operating temperature -40°C ~ 85°C, and timekeeping current 1µA @ 3V. Confirm these specifications align with your application requirements and the original R2043L-E2 design parameters.