SIL09E122J Equivalent & Substitute Parts

Part Overview

The SIL09E122J is an 8-resistor network array manufactured by TE Connectivity Passive Product, featuring 1.2k Ohm resistors in a 9-SIP through-hole package. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing production and maintenance applications. The bussed circuit topology and 200mW power per element rating define its functional role in electronic assemblies requiring integrated resistor networks.

Substiute Parts

SIL09E122J

TE Connectivity Passive ProductIn Stock: 1140SIL09E122J Datasheet

Current PartRFQ

4609X-101-122LF

Bourns Inc.In Stock: 36554609X-101-122LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SIL09E122J is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 1.2k Ohm
• Number of resistors: 8
• Circuit type: Bussed
• Power per element: 200mW
• Number of pins: 9
• Package / Case: 9-SIP
• Mounting type: Through Hole
• Operating temperature range: -55°C ~ 125°C

Allowable Variation Parameters:

• Tolerance: May improve from ±5% to ±2%
• Temperature coefficient: May improve from ±200ppm/°C to ±100ppm/°C
• Product status: Active substitutes acceptable for obsolete main part
• Compliance certifications: Must maintain ROHS3 and REACH compliance

The substitute part 4609X-101-122LF meets all mandatory parameters while providing improved tolerance and temperature coefficient specifications, making it a direct functional equivalent.

Parameter Comparison

Engineering Selection Recommendations

The 4609X-101-122LF from Bourns Inc. serves as the direct substitute for the obsolete SIL09E122J. Selection of this substitute is supported by the following factors:

Compliance and Regulatory Status: Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory continuity in applications subject to environmental directives.

Product Lifecycle: The 4609X-101-122LF is classified as active, providing assured long-term availability and supply chain stability compared to the obsolete SIL09E122J.

Electrical Performance: The substitute part delivers improved electrical characteristics through tighter tolerance (±2% versus ±5%) and reduced temperature coefficient (±100ppm/°C versus ±200ppm/°C), resulting in enhanced circuit stability and precision without compromising functional compatibility.

Physical Compatibility: Dimensional specifications are equivalent within manufacturing tolerances, confirming direct pin-for-pin and footprint compatibility for through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can the 4609X-101-122LF directly replace the SIL09E122J in existing designs?

A: Yes. Both parts share identical resistance values, pin counts, package types, and operating temperature ranges. The 9-SIP through-hole footprint and bussed circuit topology are identical, enabling direct substitution without PCB redesign.

Q: What are the advantages of using the 4609X-101-122LF substitute?

A: The substitute provides improved tolerance (±2% versus ±5%) and lower temperature coefficient (±100ppm/°C versus ±200ppm/°C), resulting in tighter resistance accuracy and reduced drift across the operating temperature range. Additionally, active product status ensures ongoing availability.

Q: Are there any electrical performance differences between these parts?

A: Both parts deliver 200mW power per element and operate across -55°C to 125°C. The substitute exhibits superior tolerance and temperature stability, which may improve circuit performance in precision applications but does not create incompatibility with designs specified for the original part.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SIL09E122J and 4609X-101-122LF are ROHS3 compliant and REACH unaffected, maintaining equivalent regulatory status for applications subject to environmental directives.

Q: What is the physical size difference between these parts?

A: Dimensions are functionally equivalent. The SIL09E122J measures 22.86mm x 2.50mm with 5.08mm seated height, while the 4609X-101-122LF measures 22.81mm x 2.49mm with identical 5.08mm seated height. These minor variations fall within standard manufacturing tolerances and do not affect PCB compatibility.

Q: Can the substitute be used in high-precision applications?

A: The 4609X-101-122LF is suitable for applications requiring improved accuracy due to its ±2% tolerance and ±100ppm/°C temperature coefficient. Applications originally designed for the ±5% tolerance SIL09E122J will experience enhanced performance with the substitute.