Bourns 4306R-102-121 Equivalent & Substitute Parts

Part Overview

The Bourns 4306R-102-121 is a 3-resistor isolated network array in 6-SIP package configuration, rated at 120 Ohm ±2% with 300mW power per element. This through-hole component operates across -55°C to 125°C and is designed for applications requiring discrete resistor networks with isolated circuit topology. The part is currently active in production. Substitute parts are identified to address inventory availability, compliance requirements, or specific application constraints while maintaining electrical and mechanical compatibility.

Substiute Parts

4306R-102-121

Bourns Inc.In Stock: 7984306R-102-121 Datasheet

Current PartRFQ

4306R-102-121LF

Bourns Inc.In Stock: 32194306R-102-121LF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 4306R-102-121 is determined by strict equivalence across the following critical parameters:

• Resistance value: 120 Ohm (exact match required)
• Tolerance: ±2% (exact match required)
• Number of resistors: 3 (exact match required)
• Circuit topology: Isolated (exact match required)
• Power rating per element: 300mW (exact match required)
• Temperature coefficient: ±100ppm/°C (exact match required)
• Operating temperature range: -55°C to 125°C (exact match required)
• Package configuration: 6-SIP through-hole (exact match required)
• Pin count: 6 (exact match required)

The identified substitute part 4306R-102-121LF maintains full electrical and mechanical equivalence to the primary part number across all specified parameters. The suffix designation indicates a variation in RoHS compliance status and lead finish specification, with no impact on core electrical performance or package compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the 4306R-102-121 and 4306R-102-121LF are active production parts from Bourns Inc. with identical electrical specifications and mechanical compatibility. Selection between these parts is determined by regulatory and compliance requirements:

The 4306R-102-121LF is specified for applications requiring RoHS3 compliance. The 4306R-102-121 is suitable for applications where RoHS compliance is not mandated. Both parts are REACH Affected and classified under ECCN EAR99. The choice between these substitutes depends solely on the compliance framework applicable to the end application and regional regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the 4306R-102-121LF be used as a direct replacement for the 4306R-102-121?

A: Yes. The 4306R-102-121LF is electrically and mechanically equivalent. The suffix designation indicates RoHS3 compliance and lead finish specification. All electrical parameters, package dimensions, pin configuration, and performance characteristics are identical.

Q: What is the difference between the two part numbers?

A: The primary difference is RoHS compliance status. The 4306R-102-121 is RoHS non-compliant, while the 4306R-102-121LF is ROHS3 compliant. Both parts maintain identical resistance value, tolerance, power rating, temperature coefficient, and 6-SIP package configuration.

Q: Are these parts pin-compatible?

A: Yes. Both parts use the 6-SIP through-hole package with 6 pins and identical dimensional specifications (14.83mm L × 2.16mm W × 4.95mm H max). They are directly interchangeable on PCBs designed for either part number.

Q: What applications require the RoHS3 compliant variant?

A: Applications subject to European Union RoHS Directive 2011/65/EU or equivalent regional regulations require the RoHS3 compliant 4306R-102-121LF. Applications without such regulatory requirements may use either variant.

Q: Can these parts be used in high-temperature applications?

A: Yes. Both parts operate across -55°C to 125°C with a temperature coefficient of ±100ppm/°C and resistor-ratio-drift of 50ppm/°C, supporting high-temperature industrial and automotive applications within this range.

Q: What is the isolation configuration of this resistor network?

A: This is an isolated 3-resistor network, meaning each resistor element is electrically independent with no internal connections between resistor paths. This configuration is suitable for applications requiring discrete resistor functions within a single package.