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ICS9FG104DFILF Equivalent & Substitute Parts
Part Overview
The ICS9FG104DFILF is a Clock/Frequency Synthesizer IC manufactured by Renesas Electronics Corporation, designed for Intel CPU Server, PCI Express (PCIe), and SATA applications. This 28-SSOP surface mount device generates a 400MHz output from clock or crystal input using a Phase-Locked Loop (PLL) architecture with spread spectrum capability.
The ICS9FG104DFILF is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity and ensure component availability for production, maintenance, and legacy system support.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Renesas Electronics Corporation |
| Category | Clock/Timing |
| Package / Case | 28-SSOP (0.209", 5.30mm Width) |
| Mounting Type | Surface Mount |
| Frequency - Max | 400MHz |
| Output Type | HCSL |
| Input Type | Clock, Crystal |
| Ratio - Input:Output | 1:5 |
| Differential - Input:Output | No/Yes |
| Voltage - Supply | 3.135V ~ 3.465V |
| Operating Temperature | -40°C ~ 85°C |
| Number of Circuits | 1 |
| PLL | Yes |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the ICS9FG104DFILF are determined by strict equivalence across the following critical parameters:
- Identical base product number (9FG104 series)
- Matching package type (28-SSOP)
- Identical electrical specifications (400MHz output, 1:5 input:output ratio, HCSL output, 3.135V ~ 3.465V supply)
- Identical operating temperature range (-40°C ~ 85°C)
- Same functional purpose (Intel CPU Server, PCIe, SATA clock generation)
- Identical PLL architecture and spread spectrum capability
The substitute parts differ only in product status (active vs. obsolete) and packaging format (Tube vs. Tape & Reel), which do not affect electrical or mechanical compatibility.
Parameter Comparison
| Parameter | ICS9FG104DFILF | 9FG104EFILF | 9FG104EFILFT |
|---|---|---|---|
| Manufacturer | Renesas Electronics Corporation | Renesas Electronics Corporation | Renesas Electronics Corporation |
| Product Status | Obsolete | Active | Active |
| Package / Case | 28-SSOP (0.209", 5.30mm Width) | 28-SSOP (0.209", 5.30mm Width) | 28-SSOP (0.209", 5.30mm Width) |
| Packaging Format | Standard | Tube | Tape & Reel (TR) |
| Frequency - Max | 400MHz | 400MHz | 400MHz |
| Output Type | HCSL | HCSL | HCSL |
| Input Type | Clock, Crystal | Clock, Crystal | Clock, Crystal |
| Ratio - Input:Output | 1:5 | 1:5 | 1:5 |
| Differential - Input:Output | No/Yes | No/Yes | No/Yes |
| Voltage - Supply | 3.135V ~ 3.465V | 3.135V ~ 3.465V | 3.135V ~ 3.465V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C | -40°C ~ 85°C |
| Number of Circuits | 1 | 1 | 1 |
| PLL | Yes | Yes | Yes |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| RoHS Status | Not specified | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
Both 9FG104EFILF and 9FG104EFILFT are direct electrical and mechanical equivalents to the ICS9FG104DFILF. Selection between these active alternatives should be based on the following factors:
9FG104EFILF (Tube Packaging): Suitable for lower-volume applications, prototype development, and component evaluation where individual unit handling is required.
9FG104EFILFT (Tape & Reel Packaging): Recommended for production environments requiring automated assembly processes. This variant offers higher inventory availability (3562 units) and is optimized for high-volume manufacturing workflows.
Both substitute parts carry ROHS3 compliance certification, providing regulatory advantage over the obsolete ICS9FG104DFILF. The electrical performance, thermal characteristics, and functional specifications are identical across all three part numbers.
Frequently Asked Questions (FAQ)
Q: Can 9FG104EFILF and 9FG104EFILFT be used interchangeably with ICS9FG104DFILF?
A: Yes. Both parts are electrically and mechanically identical to the ICS9FG104DFILF. The differences are limited to packaging format (Tube vs. Tape & Reel) and product status (Active vs. Obsolete). PCB layout, schematic integration, and performance characteristics remain unchanged.
Q: What is the primary reason to substitute the ICS9FG104DFILF?
A: The ICS9FG104DFILF is classified as obsolete. The active alternatives (9FG104EFILF and 9FG104EFILFT) ensure long-term component availability and supply chain continuity.
Q: Are there any compliance differences between the substitute parts?
A: The substitute parts (9FG104EFILF and 9FG104EFILFT) are ROHS3 compliant, whereas the ICS9FG104DFILF compliance status is not specified. Both substitutes maintain REACH Unaffected status. For applications requiring RoHS certification, the active alternatives are preferred.
Q: Which packaging format should be selected for production?
A: Tape & Reel (9FG104EFILFT) is standard for automated assembly and high-volume production. Tube packaging (9FG104EFILF) is appropriate for manual assembly, prototyping, and lower-volume builds.
Q: Are the electrical specifications identical across all three part numbers?
A: Yes. Frequency output (400MHz), supply voltage range (3.135V ~ 3.465V), operating temperature (-40°C ~ 85°C), input/output ratios (1:5), and all other electrical parameters are identical.
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