RT0805FRE0740R2L Equivalent & Substitute Parts

Part Overview

The RT0805FRE0740R2L is a 40.2 Ohm ±1% thin film chip resistor in 0805 (2012 Metric) package format, rated for 0.125W (1/8W) power dissipation. Manufactured by YAGEO under the RT series, this component is actively produced and ROHS3 compliant. Substitute parts are identified based on matching resistance value, package format, and electrical performance within acceptable tolerance and power rating parameters.

Substiute Parts

RT0805FRE0740R2L

YAGEOIn Stock: 1111RT0805FRE0740R2L Datasheet

Current PartRFQ

RT0805DRE0740R2L

YAGEOIn Stock: 10533RT0805DRE0740R2L Datasheet

UpgradeRFQ

RP73PF2A40R2BTDF

TE Connectivity Passive ProductIn Stock: 7908RP73PF2A40R2BTDF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RT0805FRE0740R2L are qualified based on the following criteria:

Mandatory matching parameters:

• Resistance value: 40.2 Ohms
• Package format: 0805 (2012 Metric)
• Composition: Thin Film
• Operating temperature range: -55°C ~ 155°C minimum
• RoHS3 compliance

Allowable parameter variations:

• Tolerance: Equal to or tighter than ±1%
• Power rating: Equal to or greater than 0.125W
• Temperature coefficient: Equal to or lower absolute value
• Moisture sensitivity level: 1 (Unlimited)

Two substitute parts meet these criteria: RT0805DRE0740R2L (YAGEO, tighter tolerance upgrade) and RP73PF2A40R2BTDF (TE Connectivity, higher power rating with superior tolerance).

Parameter Comparison

Engineering Selection Recommendations

RT0805DRE0740R2L (YAGEO): Direct upgrade within the same manufacturer series. Maintains identical power rating and package specifications while providing tighter tolerance (±0.5% vs ±1%). Suitable for applications requiring improved accuracy without additional thermal headroom. ROHS3 compliant with unlimited moisture sensitivity rating.

RP73PF2A40R2BTDF (TE Connectivity): Cross-manufacturer substitute offering superior tolerance (±0.1%) and doubled power capacity (0.25W vs 0.125W). Temperature coefficient is improved (±25ppm/°C vs ±50ppm/°C). Physical dimensions remain compatible with 0805 package footprint. ROHS3 compliant. Appropriate for designs requiring enhanced performance margins or higher dissipation capability within the same package envelope.

All three parts maintain active production status and full regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can RT0805DRE0740R2L be used as a direct replacement for RT0805FRE0740R2L?

A: Yes. Both parts are YAGEO RT series thin film resistors with identical 40.2 Ohm resistance, 0805 package, and 0.125W power rating. The substitute has tighter tolerance (±0.5% vs ±1%), making it functionally compatible and superior in accuracy.

Q: What are the physical compatibility considerations for RP73PF2A40R2BTDF?

A: RP73PF2A40R2BTDF uses the same 0805 (2012 Metric) package footprint. Maximum seated height is 0.026" (0.65mm) compared to 0.024" (0.60mm) for the original part. This 0.01mm difference is within standard PCB assembly tolerances and does not affect board-level compatibility.

Q: When should RP73PF2A40R2BTDF be selected over RT0805DRE0740R2L?

A: Select RP73PF2A40R2BTDF when circuit design requires higher power dissipation capacity (0.25W vs 0.125W), superior tolerance accuracy (±0.1%), or lower temperature coefficient (±25ppm/°C). The TE Connectivity part provides enhanced performance margins within the same package size.

Q: Are all three parts ROHS3 compliant?

A: Yes. RT0805FRE0740R2L, RT0805DRE0740R2L, and RP73PF2A40R2BTDF are all ROHS3 compliant with moisture sensitivity level 1 (unlimited).

Q: What is the resistance tolerance impact on circuit performance?

A: Tolerance determines maximum resistance deviation from the 40.2 Ohm nominal value. RT0805FRE0740R2L allows ±0.402 Ohm variation (±1%), RT0805DRE0740R2L allows ±0.201 Ohm variation (±0.5%), and RP73PF2A40R2BTDF allows ±0.0402 Ohm variation (±0.1%). Select based on circuit sensitivity to resistance variation.