Bourns 4606X-102-270 Equivalent & Substitute Parts

Part Overview

The Bourns 4606X-102-270 is a 27 Ohm isolated 3-resistor network array in 6-SIP package configuration, rated for 300mW power per element with ±1Ohm tolerance and ±250ppm/°C temperature coefficient. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Substitute parts must maintain identical electrical specifications and mechanical compatibility within the 6-SIP through-hole form factor.

Substiute Parts

4606X-102-270

Bourns Inc.In Stock: 8634606X-102-270 Datasheet

Current PartRFQ

4606X-102-270LF

Bourns Inc.In Stock: 20354606X-102-270LF Datasheet

DirectRFQ

4306R-102-270

Bourns Inc.In Stock: 10394306R-102-270 Datasheet

SimilarRFQ

4306R-102-270LF

Bourns Inc.In Stock: 9564306R-102-270LF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: resistance value (27 Ohm), tolerance (±1Ohm), circuit isolation topology, power rating (300mW per element), temperature coefficient (±250ppm/°C), operating temperature range (-55°C to 125°C), pin count (6), and package type (6-SIP through-hole). Parts are grouped into two categories: direct functional equivalents and similar alternatives with minor dimensional variations.

Direct Equivalent Category: Parts maintaining identical electrical and mechanical specifications with only packaging or compliance status differences.

Similar Alternative Category: Parts meeting all electrical specifications with minor dimensional variations and different resistor-ratio-drift characteristics that do not affect primary circuit function.

Parameter Comparison

Engineering Selection Recommendations

4606X-102-270LF (Direct Equivalent - Recommended): This part is the active production equivalent of the obsolete 4606X-102-270. It maintains identical electrical specifications and mechanical dimensions while providing ROHS3 compliance. Selection of this part eliminates obsolescence risk and aligns with current regulatory requirements.

4306R-102-270LF (Similar Alternative - Secondary Option): This part meets all core electrical specifications with ROHS3 compliance and active product status. Minor dimensional variations (0.36mm length reduction, 0.33mm width reduction, 0.13mm height reduction) are within typical PCB layout tolerances for through-hole components. The 50ppm/°C resistor-ratio-drift specification provides enhanced matching characteristics compared to the primary part.

4306R-102-270 (Similar Alternative - Legacy Compliance): This part provides electrical equivalence with active status but lacks ROHS3 compliance. Selection is appropriate only for applications where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can 4606X-102-270LF be used as a direct replacement for 4606X-102-270?

A: Yes. The 4606X-102-270LF is electrically and mechanically identical to the obsolete 4606X-102-270, with the addition of ROHS3 compliance. Pin configuration, resistance value, tolerance, power rating, and temperature coefficient are identical. This is the recommended substitute for obsolescence mitigation.

Q: What are the dimensional differences between 4606X and 4306R series parts?

A: The 4306R series has slightly smaller footprint dimensions: 0.36mm shorter in length (14.83mm vs 15.19mm), 0.33mm narrower (2.16mm vs 2.49mm), and 0.13mm lower in seated height (4.95mm vs 5.08mm). These variations are within standard PCB layout tolerances for through-hole components and do not affect electrical performance.

Q: Does the 50ppm/°C resistor-ratio-drift specification on 4306R parts affect compatibility?

A: No. The resistor-ratio-drift parameter describes matching characteristics between individual resistors within the array and does not affect substitution compatibility. All parts maintain the specified ±250ppm/°C temperature coefficient for individual resistor elements.

Q: Are there RoHS compliance considerations for part selection?

A: Yes. The 4606X-102-270LF and 4306R-102-270LF are ROHS3 compliant, meeting current regulatory requirements. The original 4606X-102-270 and 4306R-102-270 are non-compliant. For new designs and applications subject to RoHS regulations, select compliant variants (LF suffix).

Q: Can these parts be used interchangeably in existing PCB designs?

A: The 4606X-102-270LF is a direct mechanical and electrical replacement requiring no PCB modifications. The 4306R series parts have minor dimensional variations that may require PCB layout verification, particularly for tight spacing applications, though standard through-hole tolerances typically accommodate these differences.