NBC12429AFAG PLL Clock Generator Equivalent & Substitute Parts

Part Overview

The NBC12429AFAG is a PLL Clock Generator IC manufactured by onsemi, designed for 400MHz clock generation applications in a 32-LQFP surface mount package. This component features PECL output, crystal input, and operates across a supply voltage range of 3.135V to 5.25V. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

NBC12429AFAG

onsemiIn Stock: 1145NBC12429AFAG Datasheet

Current PartRFQ

NBC12429FAR2G

onsemiIn Stock: 5097NBC12429FAR2G Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The NBC12429FAR2G qualifies as a direct substitute for the NBC12429AFAG based on the following critical parameters:

• Identical manufacturer (onsemi)
• Identical functional type (PLL Clock Generator)
• Identical maximum frequency specification (400MHz)
• Identical input/output configuration (Crystal input, PECL output)
• Identical number of circuits (1)
• Identical input:output ratio (1:1)
• Identical supply voltage range (3.135V ~ 5.25V)
• Identical package and pinout (32-LQFP, 7x7mm)
• Identical mounting type (Surface Mount)
• Identical MSL rating (2, 1 Year)

The primary distinction between these parts is product status and operating temperature range, with NBC12429FAR2G being an active product with a narrower operating temperature specification.

Parameter Comparison

Engineering Selection Recommendations

The NBC12429FAR2G is the direct substitute for the obsolete NBC12429AFAG. Selection between these parts should be based on the following criteria:

For NBC12429FAR2G (Recommended for new designs):

• Active product status ensures ongoing manufacturer support and availability
• ROHS3 compliance provides environmental regulatory alignment
• Tape & Reel packaging supports automated assembly processes
• Suitable for applications operating within 0°C to 70°C temperature range

For NBC12429AFAG (Legacy system support only):

• Retain only for existing systems requiring the extended -40°C to 85°C operating range
• Obsolete status limits future availability; transition planning is advised
• Current inventory of 1130 pieces available for legacy applications

Temperature range represents the only functional limitation when substituting NBC12429FAR2G for NBC12429AFAG. Applications requiring operation below 0°C or above 70°C must retain the original NBC12429AFAG specification.

Frequently Asked Questions (FAQ)

Q: Can NBC12429FAR2G replace NBC12429AFAG in all applications?

A: NBC12429FAR2G is functionally equivalent for applications operating within 0°C to 70°C. Applications requiring the extended -40°C to 85°C temperature range of the NBC12429AFAG require the original part.

Q: What is the difference between bulk and Tape & Reel packaging?

A: Bulk packaging (NBC12429AFAG) is suitable for manual assembly and small-volume applications. Tape & Reel packaging (NBC12429FAR2G) is designed for automated pick-and-place assembly processes and high-volume production.

Q: Are the pinouts identical between NBC12429AFAG and NBC12429FAR2G?

A: Yes. Both parts use the 32-LQFP (7x7mm) package with identical pinout configuration, enabling direct PCB-level substitution.

Q: What does the MSL rating of 2 (1 Year) mean?

A: Moisture Sensitivity Level 2 indicates the component requires controlled storage conditions. The part maintains full performance characteristics when stored in dry conditions for up to one year from the date of manufacture.

Q: Why is NBC12429AFAG classified as obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. NBC12429FAR2G represents the active equivalent for ongoing procurement and new design implementations.

Q: Are there compliance differences between these parts?

A: NBC12429FAR2G carries ROHS3 compliance certification. Both parts maintain REACH Unaffected status and EAR99 export classification.