CS3351YD14 Equivalent & Substitute Parts

Part Overview

The CS3351YD14 is a Darlington alternator regulator IC manufactured by onsemi, designed for 3-phase alternator applications in automotive environments. This Surface Mount device operates within a 9V to 17V supply range and is housed in a 14-SOIC package. The CS3351YD14 is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

CS3351YD14

onsemiIn Stock: 2025CS3351YD14 Datasheet

Current PartRFQ

CS3351YDR14G

onsemiIn Stock: 4939CS3351YDR14G Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CS3351YD14 is determined by strict equivalence across the following parameters:

• Base Product Number: CS3351
• Package / Case: 14-SOIC (0.154", 3.90mm Width)
• Voltage - Supply: 9V ~ 17V
• Current - Supply: 12mA
• Operating Temperature: -40°C ~ 125°C
• Grade: Automotive
• Mounting Type: Surface Mount
• Applications: Alternator, 3-Phase

The CS3351YDR14G meets all electrical and mechanical requirements for direct substitution. The primary difference is product status and packaging format, with the substitute part being active in production and available in Tape & Reel packaging.

Parameter Comparison

Engineering Selection Recommendations

The CS3351YDR14G is the direct substitute for the obsolete CS3351YD14. Both parts share identical electrical specifications, thermal ratings, and package geometry, ensuring pin-for-pin compatibility and functional equivalence in 3-phase alternator regulator applications.

The CS3351YDR14G offers the advantage of active product status with current manufacturing availability. Additionally, the substitute part carries ROHS3 compliance, whereas the original part is RoHS non-compliant. For new designs or system refreshes, the CS3351YDR14G is the appropriate selection. The Tape & Reel packaging of the substitute part is standard for automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the CS3351YDR14G be used as a direct replacement for the CS3351YD14?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical supply voltage ranges (9V ~ 17V), current specifications (12mA), operating temperature range (-40°C ~ 125°C), and 14-SOIC package geometry. Pin-for-pin substitution is valid.

Q: What is the difference between the CS3351YD14 and CS3351YDR14G?

A: The primary differences are product status and packaging format. The CS3351YD14 is obsolete and supplied in bulk packaging, while the CS3351YDR14G is an active product available in Tape & Reel format. The CS3351YDR14G also carries ROHS3 compliance.

Q: Are there any compatibility concerns when switching from CS3351YD14 to CS3351YDR14G?

A: No compatibility concerns exist. The identical package footprint (14-SOIC), electrical ratings, and automotive grade specification ensure seamless integration into existing PCB designs and system applications.

Q: What packaging formats are available for these parts?

A: The CS3351YD14 is supplied in bulk packaging. The CS3351YDR14G is supplied in Tape & Reel (TR) format, which is standard for high-volume automated assembly operations.

Q: Is the CS3351YDR14G suitable for automotive applications?

A: Yes. The CS3351YDR14G carries an Automotive grade designation and operates across the full automotive temperature range of -40°C to 125°C, meeting automotive reliability and environmental requirements.