CS5171ED8G Equivalent & Substitute Parts

Part Overview

The CS5171ED8G is a multi-configuration adjustable switching regulator IC manufactured by onsemi, designed for buck, boost, flyback, forward converter, and SEPIC topologies. This component supports positive or negative adjustable output configurations with a 1.5A switch current rating and operates across a 2.7V to 30V input range. The CS5171ED8G is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing production requirements.

Substiute Parts

CS5171ED8G

onsemiIn Stock: 1224CS5171ED8G Datasheet

Current PartRFQ

CS5171EDR8G

onsemiIn Stock: 39108CS5171EDR8G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS5171ED8G is determined by strict equivalence across the following critical parameters:

• Base product number (CS5171)
• Package type and dimensions (8-SOIC, 0.154", 3.90mm Width)
• Functional topology (Buck, Boost, Flyback, Forward Converter, SEPIC)
• Output configuration (Positive or Negative Adjustable)
• Electrical specifications (Input voltage 2.7V–30V, output 1.28V–40V, 1.5A switch current, 280kHz switching frequency)
• Operating temperature range (-40°C ~ 125°C)
• Mounting type (Surface Mount)

The CS5171EDR8G qualifies as a direct substitute based on identical electrical and mechanical parameters. The primary distinction is packaging format: the CS5171ED8G uses tube packaging, while the CS5171EDR8G uses Tape & Reel (TR) format. Both share the same base product number, package footprint, and functional specifications.

Parameter Comparison

Engineering Selection Recommendations

The CS5171EDR8G is the direct active equivalent for the obsolete CS5171ED8G. Both parts share identical electrical specifications, functional capabilities, and physical package dimensions. The CS5171EDR8G maintains active product status with ROHS3 compliance certification, making it suitable for new designs and production applications requiring the CS5171 switching regulator functionality.

Selection between these parts is determined by supply chain and manufacturing requirements. The CS5171ED8G in tube packaging is obsolete and should not be specified for new designs. The CS5171EDR8G in Tape & Reel format is the recommended selection for active production, offering superior availability and compliance with current environmental standards.

Frequently Asked Questions (FAQ)

Q: Can the CS5171EDR8G replace the CS5171ED8G in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The CS5171EDR8G operates across the same input voltage range (2.7V–30V), delivers the same output current (1.5A), and supports identical topologies and output configurations. PCB layout and schematic designs require no modification.

Q: What is the difference between CS5171ED8G and CS5171EDR8G?

A: The primary difference is packaging format. The CS5171ED8G uses tube packaging, while the CS5171EDR8G uses Tape & Reel (TR) format. Electrically and functionally, both parts are identical. The CS5171EDR8G also carries ROHS3 compliance certification and maintains active product status.

Q: Why is the CS5171ED8G classified as obsolete?

A: The CS5171ED8G has been discontinued by onsemi. The CS5171EDR8G in Tape & Reel packaging is the active production equivalent and should be used for all new designs and ongoing manufacturing.

Q: Are there any compliance differences between these parts?

A: The CS5171EDR8G is ROHS3 compliant. Both parts share identical REACH status (REACH Unaffected), ECCN classification (EAR99), and HTSUS code (8542.39.0001). Moisture sensitivity level is 1 (Unlimited) for both.

Q: Can I use CS5171EDR8G in high-temperature applications?

A: Both parts operate across the same temperature range: -40°C to 125°C (junction temperature). Application suitability depends on circuit design and thermal management, not on part selection between these equivalents.

Q: Does packaging format affect circuit performance?

A: No. Packaging format (tube versus Tape & Reel) affects only supply chain logistics and manufacturing automation compatibility. Electrical performance and functional characteristics are identical.