RL73H2AR75FTDF Equivalent & Substitute Parts

Part Overview

The RL73H2AR75FTDF is a 750 mOhms ±1% thick film chip resistor manufactured by TE Connectivity Passive Product, rated at 0.125W (1/8W) in an 0805 (2012 Metric) package. 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 compliance certifications align with the original component, enabling direct replacement in circuit designs without functional degradation.

Substiute Parts

RL73H2AR75FTDF

TE Connectivity Passive ProductIn Stock: 801RL73H2AR75FTDF Datasheet

Current PartRFQ

RCWH0805R750FKEA

Vishay DaleIn Stock: 21055RCWH0805R750FKEA Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RL73H2AR75FTDF is determined by the following critical parameters:

Electrical Specifications:

• Resistance value: 750 mOhms
• Tolerance: ±1%
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C ~ 155°C

Mechanical Specifications:

• Package type: 0805 (2012 Metric)
• Physical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm)
• Height - Seated (Max): 0.026" (0.65mm)
• Number of terminations: 2

Compliance & Environmental:

• RoHS3 compliance
• Moisture Sensitivity Level: 1 (Unlimited)
• Composition: Thick Film
• Application: Current Sense

Substitute parts must satisfy all electrical parameters, maintain mechanical compatibility within the 0805 package envelope, and meet or exceed the compliance certifications of the original component.

Parameter Comparison

Engineering Selection Recommendations

The RCWH0805R750FKEA (Vishay Dale) qualifies as a direct substitute for the RL73H2AR75FTDF based on the following criteria:

Electrical Compatibility: Both components share identical resistance (750 mOhms), tolerance (±1%), temperature coefficient (±100ppm/°C), and operating temperature range (-55°C ~ 155°C). The substitute part features a higher power rating (0.333W vs. 0.125W), which provides additional thermal margin without affecting circuit performance in applications designed for the original 0.125W specification.

Mechanical Compatibility: Both parts conform to the 0805 (2012 Metric) package standard with matching termination count (2) and maximum seated height (0.026" / 0.65mm). Width variation (0.049" vs. 0.051") remains within standard package tolerance and does not impact PCB layout compatibility.

Compliance & Certification: Both components are RoHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, meeting identical environmental and regulatory requirements. The substitute part includes additional moisture-resistant features without compromising the original specifications.

Product Status: Both components maintain Active product status, ensuring continued availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the RCWH0805R750FKEA replace the RL73H2AR75FTDF in all applications?

A: Yes. The substitute part meets all critical electrical parameters (resistance, tolerance, temperature coefficient, operating range) and maintains mechanical compatibility within the 0805 package envelope. The higher power rating (0.333W vs. 0.125W) provides additional thermal capability without introducing incompatibility.

Q: What is the significance of the higher power rating on the substitute part?

A: The RCWH0805R750FKEA is rated at 0.333W compared to the original 0.125W. This higher rating indicates greater thermal dissipation capability. In applications where the original part operates at or below its 0.125W specification, the substitute part will operate at lower junction temperature, extending component life and improving reliability margins.

Q: Are there dimensional differences between these parts?

A: Both parts conform to the 0805 (2012 Metric) package standard. Width differs by 0.002" (0.05mm), which falls within standard package tolerance and does not affect PCB footprint compatibility. Length and maximum seated height are identical.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the RL73H2AR75FTDF and RCWH0805R750FKEA are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating. Both carry identical ECCN (EAR99) and HTSUS (8533.21.0030) classifications.

Q: What additional features does the substitute part provide?

A: The RCWH0805R750FKEA includes moisture-resistant characteristics in addition to the current sense functionality present in the original part. This enhancement does not alter electrical performance and provides additional environmental protection.

Q: Are packaging formats identical?

A: Both components are supplied in Tape & Reel (TR) packaging format, maintaining supply chain compatibility and automated assembly compatibility.