RT0805FRE0743R2L Equivalent & Substitute Parts

Part Overview

The RT0805FRE0743R2L is a 43.2 Ohm thin film chip resistor manufactured by YAGEO in the 0805 (2012 Metric) package format. This component is rated for 0.125W (1/8W) power dissipation with ±1% tolerance and operates across the temperature range of -55°C to 155°C. The part maintains Active product status and is RoHS3 compliant with MSL Level 1 rating, indicating suitability for standard PCB assembly processes without moisture sensitivity constraints.

Equivalent and substitute parts are identified to address inventory availability, lead time requirements, or application-specific performance needs while maintaining functional compatibility within the specified electrical and mechanical parameters.

Substiute Parts

RT0805FRE0743R2L

YAGEOIn Stock: 835RT0805FRE0743R2L Datasheet

Current PartRFQ

8-1625868-8

TE Connectivity Passive ProductIn Stock: 20698-1625868-8 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT0805FRE0743R2L is determined by the following critical parameters:

• Resistance Value: Must be 43.2 Ohms
• Package Format: Must be 0805 (2012 Metric) to ensure PCB footprint compatibility
• Composition: Thin film construction for consistent performance characteristics
• Operating Temperature Range: Must support -55°C to 155°C minimum
• Compliance: RoHS3 compliance and MSL Level 1 rating required

The substitute part 8-1625868-8 (TE Connectivity Passive Product) meets all critical substitution criteria. While this part offers enhanced specifications in tolerance (±0.1% versus ±1%) and power rating (0.25W versus 0.125W), these represent performance improvements rather than deviations, making it a valid substitute for applications where the original part is unavailable.

Parameter Comparison

Engineering Selection Recommendations

Both the RT0805FRE0743R2L and 8-1625868-8 are Active status components with full RoHS3 compliance and MSL Level 1 rating. The substitute part 8-1625868-8 provides superior tolerance performance (±0.1% versus ±1%) and higher power dissipation capability (0.25W versus 0.125W) within an identical 0805 package footprint. The marginal height difference (0.026" versus 0.024") remains within standard PCB assembly tolerances and does not impact board-level compatibility.

Selection between these parts should be based on inventory availability and application requirements. The substitute part is suitable for direct replacement in circuits where the original RT0805FRE0743R2L is unavailable, with the understanding that enhanced specifications provide additional design margin.

Frequently Asked Questions (FAQ)

Q: Can the 8-1625868-8 be used as a direct replacement for the RT0805FRE0743R2L?

A: Yes. Both parts share identical resistance value (43.2 Ohms), package format (0805), composition (thin film), and operating temperature range (-55°C to 155°C). The substitute part meets all mechanical and electrical compatibility requirements for direct PCB substitution.

Q: What is the significance of the tolerance difference between ±1% and ±0.1%?

A: Tolerance defines the acceptable resistance variation from the nominal 43.2 Ohm value. The ±0.1% tolerance of the substitute part provides tighter resistance control, resulting in improved circuit accuracy. This represents an enhancement over the original ±1% specification.

Q: Does the higher power rating of the substitute part affect circuit operation?

A: No. The 0.25W (1/4W) power rating of the substitute part exceeds the 0.125W (1/8W) requirement of the original design. Higher power rating provides additional thermal margin and does not alter electrical performance in the circuit.

Q: Are there package compatibility concerns between these parts?

A: Both parts use the 0805 (2012 Metric) package with identical footprint dimensions (0.079" L x 0.049" W). The seated height difference (0.026" versus 0.024") is negligible for standard PCB assembly and does not create clearance or compatibility issues.

Q: Do both parts meet the same compliance and environmental standards?

A: Yes. Both the RT0805FRE0743R2L and 8-1625868-8 are RoHS3 compliant with MSL Level 1 rating, REACH Unaffected status, and ECCN EAR99 classification. They meet identical regulatory and environmental requirements.