Equivalent & Substitute Parts for 4308R-102-301LF

Part Overview

The Bourns 4308R-102-301LF is a 300 Ohm isolated 4-resistor network array in 8-SIP through-hole packaging. This component is designed for applications requiring matched resistor elements with controlled tolerance and temperature stability. The part is currently active in production with full RoHS3 compliance. Substitute parts may be required due to packaging preferences, inventory availability, or specific application constraints while maintaining electrical and mechanical compatibility.

Substiute Parts

4308R-102-301LF

Bourns Inc.In Stock: 8224308R-102-301LF Datasheet

Current PartRFQ

4608X-102-301LF

Bourns Inc.In Stock: 23134608X-102-301LF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The 4608X-102-301LF qualifies as an equivalent substitute for the 4308R-102-301LF based on the following critical parameters:

• Identical resistance value: 300 Ohm
• Matching tolerance: ±2%
• Same number of resistor elements: 4
• Identical circuit configuration: Isolated
• Equivalent power rating: 300mW per element
• Matching temperature coefficient: ±100ppm/°C
• Same operating temperature range: -55°C to 125°C
• Identical pin count and package class: 8-SIP through-hole

The primary difference between these parts is packaging format (Tube versus Bulk) and minor dimensional variations within the 8-SIP envelope. Both parts maintain electrical equivalence for circuit design purposes.

Parameter Comparison

Engineering Selection Recommendations

Both the 4308R-102-301LF and 4608X-102-301LF are active production components with full RoHS3 compliance and identical export classification (EAR99). Selection between these parts should be based on:

Packaging requirements: The 4308R is supplied in Tube packaging, while the 4608X is supplied in Bulk packaging. Choose based on your procurement and assembly workflow.

Dimensional tolerance: The 4608X exhibits slightly larger dimensions (length +0.36mm, width +0.33mm, height +0.13mm). Verify clearance in space-constrained PCB layouts.

Inventory availability: The 4608X currently has higher stock levels (2217 pcs versus 784 pcs), which may influence lead time considerations.

Both parts are electrically and functionally interchangeable for circuit design purposes. PCB footprint compatibility should be confirmed for the minor dimensional differences before final design release.

Frequently Asked Questions (FAQ)

Q: Can the 4608X-102-301LF be used as a direct replacement for the 4308R-102-301LF?

A: Yes. Both parts share identical electrical specifications including resistance value, tolerance, power rating, temperature coefficient, and operating range. The primary differences are packaging format and minor dimensional variations within the 8-SIP envelope.

Q: What is the difference between Tube and Bulk packaging?

A: Tube packaging (4308R) is used for smaller quantity orders and manual assembly processes. Bulk packaging (4608X) is typically used for high-volume automated assembly. Both contain the same component.

Q: Are there any PCB layout considerations when switching between these parts?

A: The 4608X is slightly larger in all dimensions. Verify that the additional 0.36mm length, 0.33mm width, and 0.13mm height do not create clearance issues in your specific PCB layout, particularly in space-constrained applications.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the 4308R-102-301LF and 4608X-102-301LF are RoHS3 compliant, classified as EAR99 for export purposes, and share the same HTSUS commodity code.

Q: Which part should I select for new designs?

A: Either part is suitable for new designs. Selection should be based on your packaging preference, assembly process requirements, and current inventory availability. Both are active production components with equivalent electrical performance.