RLP73K2AR91FTDF Equivalent & Substitute Parts

Part Overview

The RLP73K2AR91FTDF is a 910 mOhms ±1% 0.25W thick film chip resistor in 0805 (2012 Metric) package manufactured by TE Connectivity Passive Product. This component is designed for current sense applications and is classified as Active product status. The part is RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and package compatibility are maintained across manufacturers while meeting or exceeding the performance characteristics of the original component.

Substiute Parts

RLP73K2AR91FTDF

TE Connectivity Passive ProductIn Stock: 1217RLP73K2AR91FTDF Datasheet

Current PartRFQ

RCWE0805R910FKEA

Vishay DaleIn Stock: 29937RCWE0805R910FKEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RLP73K2AR91FTDF is determined by the following critical parameters:

Electrical Equivalence Requirements:

• Resistance value: 910 mOhms
• Tolerance: ±1%
• Power rating: 0.25W minimum
• Operating temperature range: -55°C to 155°C minimum

Mechanical Compatibility Requirements:

• Package type: 0805 (2012 Metric)
• Number of terminations: 2
• Physical dimensions compatible with 0805 footprint

Compliance Requirements:

• RoHS3 compliance
• MSL 1 rating or equivalent
• Active product status

The RCWE0805R910FKEA from Vishay Dale meets all substitution criteria with identical electrical specifications and package compatibility. This part additionally qualifies as an automotive-grade component with AEC-Q200 certification and moisture-resistant properties, providing enhanced reliability characteristics beyond the base requirements.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (RLP73K2AR91FTDF): The TE Connectivity RLP73K2AR91FTDF is the original specification component. Selection is appropriate for applications where the RL73 series is explicitly required or where existing supply chain qualification is established.

Substitute Selection (RCWE0805R910FKEA): The Vishay Dale RCWE0805R910FKEA is a direct electrical and mechanical equivalent with enhanced performance characteristics. This part is suitable for applications requiring automotive-grade reliability through AEC-Q200 certification. The improved temperature coefficient (±100ppm/°C versus ±200ppm/°C) provides superior stability across the operating temperature range. Moisture-resistant properties offer additional environmental protection. Both parts maintain identical RoHS3 compliance and MSL 1 ratings.

Selection between these parts depends on application requirements and supply chain considerations rather than electrical or mechanical constraints, as both parts satisfy all functional specifications for current sense resistor applications in the 0805 package format.

Frequently Asked Questions (FAQ)

Q: Can the RCWE0805R910FKEA replace the RLP73K2AR91FTDF in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent with identical resistance values (910 mOhms), tolerance (±1%), power rating (0.25W), package type (0805), and operating temperature range (-55°C to 155°C). The RCWE0805R910FKEA meets or exceeds all specifications of the RLP73K2AR91FTDF.

Q: What is the difference in temperature coefficient between these parts?

A: The RLP73K2AR91FTDF has a temperature coefficient of ±200ppm/°C, while the RCWE0805R910FKEA has ±100ppm/°C. The lower temperature coefficient of the Vishay Dale part indicates superior resistance stability across temperature variations, which may be beneficial in precision current sensing applications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the RLP73K2AR91FTDF and RCWE0805R910FKEA are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.

Q: What does AEC-Q200 certification on the RCWE0805R910FKEA indicate?

A: AEC-Q200 is an automotive electronics qualification standard. The RCWE0805R910FKEA meets automotive-grade reliability requirements, making it suitable for automotive and high-reliability applications. The RLP73K2AR91FTDF does not carry this certification.

Q: Are the physical dimensions identical between these parts?

A: Both parts use the 0805 (2012 Metric) package. The RLP73K2AR91FTDF measures 0.079" L x 0.049" W (2.00mm x 1.25mm), while the RCWE0805R910FKEA measures 0.079" L x 0.051" W (2.00mm x 1.30mm). Both have a maximum seated height of 0.026" (0.65mm). These minor dimensional variations are within standard 0805 package tolerances and do not affect PCB footprint compatibility.

Q: Can these parts be used interchangeably in current sense applications?

A: Yes. Both parts are specifically designed for current sense applications with identical electrical specifications and package compatibility. The substitution is direct for current sensing circuits.