Renesas Electronics X5043S8 Supervisor IC - Equivalent & Substitute Parts

Part Overview

The X5043S8 is a single-channel power management supervisor IC manufactured by Renesas Electronics Corporation, designed for simple reset and power-on reset applications. This component monitors a single voltage threshold at 4.38V and provides an active-low open drain or open collector output signal. The X5043S8 is classified as an obsolete product, making equivalent and substitute parts necessary for ongoing system maintenance, redesigns, and production continuity.

Substiute Parts

X5043S8

Renesas Electronics CorporationIn Stock: 3366X5043S8 Datasheet

Current PartRFQ

X5043S8Z

Renesas Electronics CorporationIn Stock: 3954X5043S8Z Datasheet

DirectRFQ

X4323S8

Renesas Electronics CorporationIn Stock: 1431X4323S8 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the X5043S8 are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Critical Matching Parameters:

• Single voltage monitoring channel
• Voltage threshold of 4.38V
• Active-low reset output configuration
• Open drain or open collector output type
• 100ms minimum reset timeout
• Operating temperature range of 0°C ~ 70°C
• 8-SOIC surface mount package with 0.154" (3.90mm) width
• Identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications

All substitute parts listed maintain these electrical and mechanical specifications, ensuring functional and physical compatibility with the original X5043S8 design.

Parameter Comparison

Engineering Selection Recommendations

X5043S8Z is a direct manufacturer equivalent with identical electrical and mechanical specifications. The primary distinction is RoHS compliance status: X5043S8Z meets ROHS3 requirements, while the original X5043S8 is RoHS non-compliant. For new designs or systems requiring regulatory compliance with modern environmental standards, X5043S8Z is the preferred selection.

X4323S8 is a parametric equivalent supervisor IC from Renesas Electronics Corporation. It maintains all critical electrical parameters and physical package specifications identical to the X5043S8. X4323S8 also meets ROHS3 compliance requirements. This part represents an alternative from a different product line within the same manufacturer's supervisor IC portfolio.

Both substitute parts maintain compatibility with existing PCB layouts and circuit designs due to identical 8-SOIC package dimensions and pinout functionality. Selection between X5043S8Z and X4323S8 depends on component availability, supply chain considerations, and regulatory compliance requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can X5043S8Z be used as a direct replacement for X5043S8?

A: Yes. X5043S8Z is a direct manufacturer equivalent with identical electrical specifications, voltage threshold (4.38V), reset timeout (100ms minimum), output configuration (active-low open drain/collector), and 8-SOIC package dimensions. The primary difference is RoHS compliance status.

Q: What is the difference between X5043S8 and X4323S8?

A: Both parts are single-channel supervisor ICs with identical voltage thresholds (4.38V), reset characteristics, operating temperature ranges (0°C ~ 70°C), and 8-SOIC packaging. X4323S8 represents a different product line within Renesas Electronics' supervisor IC portfolio but maintains full electrical and mechanical compatibility.

Q: Are all substitute parts in the same physical package?

A: Yes. X5043S8, X5043S8Z, and X4323S8 all use the 8-SOIC package with 0.154" (3.90mm) width. They are pin-compatible and can be used interchangeably on existing PCBs without layout modifications.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance status reflects manufacturing and material composition standards, not electrical functionality. X5043S8Z and X4323S8 maintain identical electrical performance to the original X5043S8 while meeting ROHS3 environmental requirements.

Q: Which substitute part should be selected for new production?

A: Selection depends on supply chain availability and regulatory requirements. X5043S8Z is the direct equivalent with improved RoHS compliance. X4323S8 is an alternative parametric equivalent also meeting ROHS3 standards. Both are suitable for new designs requiring supervisor IC functionality at 4.38V threshold with active-low reset output.

Q: Are there any temperature or moisture sensitivity differences between the parts?

A: No. All three parts share identical operating temperature ranges (0°C ~ 70°C) and moisture sensitivity levels (MSL 1 - Unlimited), ensuring equivalent performance across environmental conditions.