RLP73N2AR39FTDF Equivalent & Substitute Parts

Part Overview

The RLP73N2AR39FTDF is a 390 mOhms ±1% thick film chip resistor manufactured by TE Connectivity Passive Product, rated for 0.25W (1/4W) power dissipation in a 0805 (2012 Metric) surface mount package. This component is designed for current sensing applications and operates across the temperature range of -55°C to 155°C. The part is currently active in production status and is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Equivalent and substitute parts are identified when alternative manufacturers produce resistors that satisfy the same electrical specifications, mechanical dimensions, and functional requirements for current sensing applications. Substitute parts enable procurement flexibility, supply chain continuity, and design optimization while maintaining circuit performance and reliability.

Substiute Parts

RLP73N2AR39FTDF

TE Connectivity Passive ProductIn Stock: 1350RLP73N2AR39FTDF Datasheet

Current PartRFQ

RCWE0805R390FKEA

Vishay DaleIn Stock: 59835RCWE0805R390FKEA Datasheet

UpgradeRFQ

RL0805FR-7W0R39L

YAGEOIn Stock: 5443RL0805FR-7W0R39L Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RLP73N2AR39FTDF is determined by the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 390 mOhms
• Tolerance: ±1%
• Power rating: 0.25W (1/4W)
• Package: 0805 (2012 Metric)
• Composition: Thick Film
• Application: Current Sense
• Operating temperature range: -55°C to 155°C (minimum)
• RoHS3 compliance
• MSL 1 rating

Allowable Variations:

• Temperature coefficient: May differ (±100ppm/°C to ±300ppm/°C acceptable)
• Physical dimensions: Minor variations within 0805 package specification tolerance
• Additional features: Automotive AEC-Q200 qualification is compatible but not required
• Moisture resistance: Enhanced moisture resistance is compatible

The identified substitute parts meet all mandatory parameters and are therefore electrically and mechanically interchangeable with the RLP73N2AR39FTDF in current sensing applications.

Parameter Comparison

Engineering Selection Recommendations

RLP73N2AR39FTDF (TE Connectivity Passive Product) is the primary specification. This part is active in production with full RoHS3 compliance and MSL 1 rating, suitable for standard current sensing applications across the full -55°C to 155°C temperature range.

RCWE0805R390FKEA (Vishay Dale) is an upgrade substitute with enhanced specifications. This part provides a lower temperature coefficient (±100ppm/°C versus ±300ppm/°C), additional moisture resistance, and AEC-Q200 automotive qualification. The operating temperature range matches the primary part (-55°C to 155°C). This substitute is suitable for applications requiring improved temperature stability and automotive-grade reliability.

RL0805FR-7W0R39L (YAGEO) is a compatible substitute with automotive AEC-Q200 qualification and moisture resistance. The temperature coefficient matches the primary part (±300ppm/°C). The operating temperature range is -55°C to 125°C, which is 30°C lower than the primary part at the upper limit. This substitute is suitable for applications operating within the -55°C to 125°C range and requiring automotive-grade qualification.

All three parts are active in production status, RoHS3 compliant, and carry MSL 1 ratings. Selection between these parts depends on application temperature requirements and whether automotive AEC-Q200 qualification is necessary.

Frequently Asked Questions (FAQ)

Q: Can RCWE0805R390FKEA replace RLP73N2AR39FTDF in all applications?

A: Yes. RCWE0805R390FKEA meets all electrical and mechanical specifications of RLP73N2AR39FTDF. The lower temperature coefficient (±100ppm/°C) provides improved temperature stability. The part operates across the same temperature range (-55°C to 155°C) and carries equivalent RoHS3 and MSL 1 compliance.

Q: What is the temperature limitation of RL0805FR-7W0R39L?

A: RL0805FR-7W0R39L operates from -55°C to 125°C, which is 30°C lower than RLP73N2AR39FTDF at the upper temperature limit (155°C). This part is suitable only for applications where the maximum operating temperature does not exceed 125°C.

Q: Are all three parts physically identical in the 0805 package?

A: All three parts conform to the 0805 (2012 Metric) package specification. Minor dimensional variations exist within tolerance: RLP73N2AR39FTDF and RL0805FR-7W0R39L measure 0.079" L x 0.049" W, while RCWE0805R390FKEA measures 0.079" L x 0.051" W. Height differences are also minimal (0.024" to 0.026" maximum seated height). These variations are within standard 0805 package tolerances and do not affect PCB layout or assembly compatibility.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. RCWE0805R390FKEA and RL0805FR-7W0R39L carry this certification, indicating compliance with automotive reliability and environmental stress testing requirements. RLP73N2AR39FTDF does not specify AEC-Q200 qualification.

Q: Which substitute offers the best temperature stability?

A: RCWE0805R390FKEA provides the best temperature stability with a temperature coefficient of ±100ppm/°C, compared to ±300ppm/°C for both RLP73N2AR39FTDF and RL0805FR-7W0R39L.

Q: Are all parts RoHS3 compliant?

A: Yes. RLP73N2AR39FTDF, RCWE0805R390FKEA, and RL0805FR-7W0R39L are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Can these parts be used interchangeably in production?

A: Yes, within the specified operating temperature ranges. RLP73N2AR39FTDF and RCWE0805R390FKEA are fully interchangeable across -55°C to 155°C. RL0805FR-7W0R39L is interchangeable only for applications operating within -55°C to 125°C. All three parts are active in production and carry equivalent compliance certifications.