NBC12430AFN PLL Clock Generator IC Equivalent & Substitute Parts

Part Overview

The NBC12430AFN is a PLL Clock Generator IC manufactured by onsemi, designed for 800MHz clock generation applications with PECL output. This Surface Mount device operates across a supply voltage range of 3.135V to 5.25V and temperature range of -40°C to 85°C. The part is classified as Obsolete, making identification of suitable substitutes essential for ongoing system support and new design implementations. Alternative parts must maintain functional equivalence in clock generation architecture, output characteristics, and physical packaging to ensure seamless integration into existing or new applications.

Key Parameters

Parameter	Specification
Manufacturer Part Number	NBC12430AFN
Manufacturer	onsemi
Category	Clock/Timing
Type	PLL Clock Generator
Frequency - Max	800MHz
Input Type	Crystal
Output Type	PECL
Number of Circuits	1
Ratio - Input:Output	1:1
Voltage - Supply	3.135V ~ 5.25V
Operating Temperature	-40°C ~ 85°C
Package / Case	28-LCC (J-Lead)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the NBC12430AFN are identified based on strict parameter alignment within the following critical categories:

Functional Parameters (Must Match):

Type: PLL Clock Generator
Input: Crystal
Output: PECL
Number of Circuits: 1
Ratio - Input:Output: 1:1
Differential - Input:Output: No/Yes

Physical Parameters (Must Match):

Package / Case: 28-LCC (J-Lead)
Mounting Type: Surface Mount
Supplier Device Package: 28-PLCC (11.51x11.51)

Electrical Parameters (Must Match or Exceed):

Voltage - Supply: 3.135V ~ 5.25V
Operating Temperature: -40°C ~ 85°C

Frequency Consideration: Substitutes may operate at different maximum frequencies provided the application requirement does not exceed the substitute part's maximum frequency specification. The NBC12429AFNG operates at 400MHz maximum, suitable only for applications requiring frequencies up to 400MHz.

Parameter Comparison

Parameter	NBC12430AFN	NBC12430AFNG	NBC12429AFNG
Manufacturer	onsemi	onsemi	onsemi
Type	PLL Clock Generator	PLL Clock Generator	PLL Clock Generator
Frequency - Max	800MHz	800MHz	400MHz
Input Type	Crystal	Crystal	Crystal
Output Type	PECL	PECL	PECL
Number of Circuits	1	1	1
Ratio - Input:Output	1:1	1:1	1:1
Voltage - Supply	3.135V ~ 5.25V	3.135V ~ 5.25V	3.135V ~ 5.25V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	-40°C ~ 85°C
Package / Case	28-LCC (J-Lead)	28-LCC (J-Lead)	28-LCC (J-Lead)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	3 (168 Hours)	3 (168 Hours)

Engineering Selection Recommendations

NBC12430AFNG (Direct Manufacturer Equivalent): This part is the direct equivalent to NBC12430AFN with identical electrical and functional specifications. The primary distinction is packaging format (Tube vs. unspecified) and improved compliance status. NBC12430AFNG is ROHS3 Compliant, addressing regulatory requirements where the original part does not. This part maintains the 800MHz maximum frequency specification and is classified as Obsolete. Selection of this part is appropriate for applications requiring exact frequency performance matching and where RoHS3 compliance is mandated.

NBC12429AFNG (Parametric Equivalent): This part shares identical functional architecture, package, and electrical specifications with the exception of maximum frequency capability, which is rated at 400MHz. NBC12429AFNG is classified as Active product status, providing superior long-term availability and supply chain stability. This part is ROHS3 Compliant and carries MSL3 rating. Selection of this part is appropriate only for applications where the required clock frequency does not exceed 400MHz, as it provides the advantage of active product status and ongoing manufacturer support.

Frequently Asked Questions (FAQ)

Q: Can NBC12430AFNG be used as a direct replacement for NBC12430AFN? A: Yes. NBC12430AFNG is functionally and electrically equivalent to NBC12430AFN. Both parts operate at 800MHz maximum frequency, share identical PECL output characteristics, and are housed in the same 28-LCC (J-Lead) package. The primary difference is improved RoHS3 compliance status of the AFNG variant.

Q: What is the key limitation when considering NBC12429AFNG as a substitute? A: NBC12429AFNG operates at a maximum frequency of 400MHz, compared to 800MHz for NBC12430AFN. This part is suitable only for applications requiring clock frequencies up to 400MHz. If your application requires frequencies above 400MHz, NBC12429AFNG is not a valid substitute.

Q: Why is product status relevant to part selection? A: Product status indicates manufacturer support and supply availability. NBC12430AFN and NBC12430AFNG are both classified as Obsolete, meaning production has ceased and inventory is limited. NBC12429AFNG is classified as Active, indicating ongoing production and superior long-term availability. For new designs or long-term production requirements, Active status parts are preferred.

Q: Are there packaging differences between these substitutes? A: All three parts use the same physical package: 28-LCC (J-Lead) with supplier device package 28-PLCC (11.51x11.51). Mounting type is Surface Mount for all variants. The only packaging distinction noted is that NBC12430AFNG is supplied in Tube format, while packaging format for NBC12430AFN and NBC12429AFNG is not specified in available data.

Q: What compliance considerations apply to these parts? A: NBC12430AFN is RoHS non-compliant. Both NBC12430AFNG and NBC12429AFNG are ROHS3 Compliant. If your application or market requires RoHS3 compliance, NBC12430AFN cannot be used; selection must be limited to AFNG or AFNG variants. Moisture Sensitivity Level (MSL) differs: NBC12430AFN carries MSL1 (Unlimited), while both AFNG variants carry MSL3 (168 Hours), requiring controlled storage and handling procedures.

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