RNA51958AFP#H0 Equivalent & Substitute Parts

Part Overview

The RNA51958AFP#H0 is a supervisor integrated circuit manufactured by Renesas Electronics Corporation, designed for power management applications. This device functions as a single-channel power-on reset supervisor with push-pull output configuration, operating across the industrial temperature range of -40°C to 85°C. The part is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and new design implementations.

Substiute Parts

RNA51958AFP#H0

Renesas Electronics CorporationIn Stock: 3223RNA51958AFP#H0 Datasheet

Current PartRFQ

REAR56958BSGM

Renesas Electronics CorporationIn Stock: 1186REAR56958BSGM Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RNA51958AFP#H0 is determined by the following critical parameters:

• Functional Type: Single-channel supervisor with power-on reset capability
• Output Stage: Push-pull, totem pole configuration
• Voltage Monitoring: Single voltage threshold at 1.25V
• Reset Behavior: Active high reset with adjustable/selectable timeout
• Package Compatibility: 8-SOIC surface mount form factor
• Temperature Range: Industrial grade (-40°C to 85°C)
• Regulatory Compliance: ROHS3 and REACH compliance status

The REAR56958BSGM qualifies as a functional equivalent based on matching supervisor architecture, single-channel monitoring, and identical package specification. Both devices are manufactured by Renesas Electronics Corporation and maintain equivalent regulatory compliance profiles.

Parameter Comparison

Engineering Selection Recommendations

The REAR56958BSGM serves as the active production equivalent for the obsolete RNA51958AFP#H0. Both devices maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for industrial and commercial applications.

The primary distinction between these parts is product lifecycle status: the RNA51958AFP#H0 is obsolete with limited inventory availability (3132 pcs), while the REAR56958BSGM is in active production with current supply (1116 pcs). The REAR56958BSGM also features MSL-3 moisture sensitivity versus MSL-1 for the original part, requiring appropriate handling protocols during storage and assembly.

For new designs and ongoing system support where the RNA51958AFP#H0 is no longer procurable, the REAR56958BSGM provides functional continuity within the Renesas supervisor product family.

Frequently Asked Questions (FAQ)

Q: Can the REAR56958BSGM directly replace the RNA51958AFP#H0 in existing designs?

A: Both devices are single-channel supervisors manufactured by Renesas Electronics Corporation with identical SOIC packaging and surface mount configuration. Functional compatibility is established through matching supervisor architecture and single-channel monitoring capability. Verify specific threshold voltage and reset timeout settings against your application requirements.

Q: What is the significance of the different MSL ratings?

A: The RNA51958AFP#H0 carries MSL-1 (unlimited moisture exposure tolerance), while the REAR56958BSGM carries MSL-3 (168-hour moisture exposure limit). MSL-3 components require controlled storage conditions and have defined shelf life windows. Ensure your supply chain and assembly processes accommodate MSL-3 handling requirements.

Q: Are both parts compliant with current regulatory standards?

A: Both the RNA51958AFP#H0 and REAR56958BSGM are ROHS3 compliant and REACH unaffected, meeting current environmental and hazardous substance regulations for industrial electronics.

Q: Why is the RNA51958AFP#H0 listed as obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. Remaining inventory is limited to existing stock. The REAR56958BSGM represents the current active production alternative within the Renesas supervisor product line.

Q: Are there any package dimension differences between these parts?

A: Both devices use 8-SOIC packaging with 0.173" (4.40mm) width specification, ensuring mechanical and electrical compatibility in PCB layouts designed for either part number.