RLP73K3AR82FTDF Equivalent & Substitute Parts

Part Overview

The RLP73K3AR82FTDF is an 820 mOhms ±1% 2W chip resistor manufactured by TE Connectivity Passive Product in the 2512 (6432 Metric) package. This thick film current sense resistor operates across a temperature range of -55°C to 155°C and is designed for applications requiring precision current measurement and sensing functionality. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific application requirements such as automotive qualification or enhanced performance characteristics.

Substiute Parts

RLP73K3AR82FTDF

TE Connectivity Passive ProductIn Stock: 1658RLP73K3AR82FTDF Datasheet

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RCWE2512R820FKEA

Vishay DaleIn Stock: 12584RCWE2512R820FKEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution between the RLP73K3AR82FTDF and RCWE2512R820FKEA is valid based on the following alignment of critical electrical and mechanical parameters:

Matching Parameters:

• Resistance value: 820 mOhms
• Tolerance: ±1%
• Power rating: 2W
• Package designation: 2512 (6432 Metric)
• Composition: Thick Film
• Operating temperature range: -55°C to 155°C
• Termination count: 2
• RoHS compliance: ROHS3
• Moisture sensitivity: MSL 1 (Unlimited)

Differentiation Factors: The RCWE2512R820FKEA substitute introduces automotive AEC-Q200 qualification and moisture-resistant characteristics, with an improved temperature coefficient of ±100ppm/°C compared to the main part's ±200ppm/°C. Physical dimensions show minor variations within the 2512 package specification envelope.

Parameter Comparison

Engineering Selection Recommendations

Both the RLP73K3AR82FTDF and RCWE2512R820FKEA are Active status products meeting identical electrical specifications for resistance, tolerance, power rating, and operating temperature range. Selection between these parts is determined by application-specific requirements:

RLP73K3AR82FTDF Selection Criteria:

• Standard industrial and commercial current sensing applications
• Applications without automotive qualification requirements
• Designs where temperature coefficient of ±200ppm/°C is acceptable

RCWE2512R820FKEA Selection Criteria:

• Automotive applications requiring AEC-Q200 qualification
• Designs benefiting from improved temperature coefficient performance (±100ppm/°C)
• Applications requiring enhanced moisture resistance characteristics
• Supply chain continuity when primary part availability is constrained

Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), ensuring compatibility with standard manufacturing and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can RCWE2512R820FKEA directly replace RLP73K3AR82FTDF in existing designs?

A: Yes. Both parts share identical electrical specifications (820 mOhms ±1%, 2W, -55°C to 155°C) and are packaged in the 2512 (6432 Metric) form factor. Physical dimensions are within acceptable tolerance for PCB footprint compatibility. The RCWE2512R820FKEA offers enhanced temperature coefficient performance and automotive qualification as additional benefits.

Q: What is the significance of the temperature coefficient difference?

A: The RLP73K3AR82FTDF operates at ±200ppm/°C while the RCWE2512R820FKEA operates at ±100ppm/°C. The lower temperature coefficient of the substitute part indicates superior resistance stability across the operating temperature range, resulting in more predictable current sensing accuracy in temperature-variable environments.

Q: Are there packaging differences between these parts?

A: Both parts are supplied in Tape & Reel (TR) packaging in the 2512 (6432 Metric) package. Minor dimensional variations exist: the RCWE2512R820FKEA is 0.002" shorter in length and 0.005" lower in seated height. These variations remain within the 2512 package specification envelope and do not affect PCB assembly compatibility.

Q: What does AEC-Q200 qualification mean?

A: AEC-Q200 is an automotive industry standard qualification for passive components. The RCWE2512R820FKEA meets this qualification, making it suitable for automotive applications. The RLP73K3AR82FTDF does not carry this designation and is appropriate for non-automotive applications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RLP73K3AR82FTDF and RCWE2512R820FKEA are ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements for commercial and industrial applications.

Q: What is the moisture sensitivity level (MSL) for these parts?

A: Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. These parts do not require special moisture control during storage, handling, or assembly processes.