9FGL0841BKILF Equivalent & Substitute Parts

Part Overview

The 9FGL0841BKILF is a PCI Express (PCIe) Clock/Frequency Generator IC manufactured by Renesas Electronics Corporation. This Surface Mount device operates at 100MHz with a single output, housed in a 48-VFQFN (6x6) package with exposed pad. The part is classified as Obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and procurement planning.

Substiute Parts

9FGL0841BKILF

Renesas Electronics CorporationIn Stock: 36579FGL0841BKILF Datasheet

Current PartRFQ

9FGL0841CKILF

Renesas Electronics CorporationIn Stock: 21389FGL0841CKILF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 9FGL0841BKILF is determined by the following critical parameters:

Mandatory Matching Parameters:

• Package / Case: 48-VFQFN Exposed Pad (ensures PCB footprint compatibility)
• Mounting Type: Surface Mount (maintains assembly process compatibility)
• Main Purpose: PCI Express (PCIe) (functional application requirement)
• Voltage - Supply: 3.135V ~ 3.465V (power supply compatibility)
• Operating Temperature: -40°C ~ 85°C (thermal operating range)
• Output Type: HCSL, LVCMOS (signal integrity and interface compatibility)
• Frequency - Max: 100MHz (timing specification)
• PLL: Yes (internal architecture requirement)

Allowable Variation Parameters:

• Input Type: Crystal or Clock input (functional flexibility)
• Ratio - Input:Output: Variation permitted (1:9 vs 1:8 acceptable within PCIe specification)
• Packaging: Tray or other standard packaging formats

The substitute part 9FGL0841CKILF meets all mandatory matching criteria while introducing minor variations in input flexibility and frequency ratio, both of which remain within acceptable PCIe clock generator specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 9FGL0841BKILF and 9FGL0841CKILF are classified as Obsolete products. Selection between these parts should be based on the following criteria:

Compliance & Certification: Both parts maintain ROHS3 compliance and REACH Unaffected status, meeting current environmental and regulatory requirements. MSL ratings are identical at Level 3 (168 Hours), requiring equivalent moisture control during storage and assembly.

Functional Compatibility: The 9FGL0841CKILF provides expanded input flexibility by accepting both Clock and Crystal inputs, compared to the 9FGL0841BKILF which accepts Crystal input only. This additional input option may provide system design flexibility without compromising PCIe clock generation performance.

Frequency Ratio Consideration: The input-to-output frequency ratio differs between parts (1:9 vs 1:8). This variation reflects different internal PLL configurations but does not affect the maximum output frequency of 100MHz or PCIe compliance.

Inventory & Availability: Current stock levels show 3610 units of 9FGL0841BKILF and 2100 units of 9FGL0841CKILF available as New Original stock.

Frequently Asked Questions (FAQ)

Q: Can the 9FGL0841CKILF directly replace the 9FGL0841BKILF on existing PCBs?

A: Yes. Both parts share identical package specifications (48-VFQFN Exposed Pad), mounting type (Surface Mount), electrical operating ranges (3.135V ~ 3.465V supply, -40°C ~ 85°C operating temperature), and output characteristics (HCSL, LVCMOS at 100MHz). PCB footprints are compatible without modification.

Q: What is the significance of the different input-to-output frequency ratios (1:9 vs 1:8)?

A: The ratio reflects the internal PLL multiplication factor. Both configurations produce the same maximum output frequency of 100MHz and maintain PCIe specification compliance. The ratio difference does not affect substitutability for applications requiring 100MHz PCIe clock generation.

Q: Does the expanded input flexibility of the 9FGL0841CKILF (Clock or Crystal) affect compatibility?

A: No. The 9FGL0841CKILF accepts both Clock and Crystal inputs, providing a superset of input options compared to the 9FGL0841BKILF (Crystal only). Systems designed for Crystal input operation will function identically with either part.

Q: Are there any thermal or environmental differences between these parts?

A: No. Both parts operate across the identical temperature range (-40°C ~ 85°C) and carry the same MSL rating (Level 3, 168 Hours). Thermal management and moisture control requirements are equivalent.

Q: What is the impact of both parts being classified as Obsolete?

A: Obsolete status indicates these parts are no longer in active production. For new designs, evaluation of current-generation PCIe clock generator alternatives from Renesas Electronics Corporation is recommended. For legacy system support, both parts remain functionally equivalent and are available from current inventory stocks.