RL73H2AR18FTD Equivalent & Substitute Parts

Part Overview

The RL73H2AR18FTD is a 180 mOhms ±1% thick film chip resistor manufactured by TE Connectivity Passive Product. This current sense resistor is designed for precision low-resistance applications requiring accurate current measurement in electronic circuits. The component is packaged in 0805 (2012 Metric) form factor and rated for 0.125W (1/8W) power dissipation across an operating temperature range of -55°C to 155°C. The part maintains Active product status and carries ROHS3 compliance certification. Substitute parts are identified to provide alternative sourcing options while maintaining identical electrical and mechanical specifications.

Substiute Parts

RL73H2AR18FTD

TE Connectivity Passive ProductIn Stock: 1089RL73H2AR18FTD Datasheet

Current PartRFQ

RL73H2AR18FTDF

TE Connectivity Passive ProductIn Stock: 2388RL73H2AR18FTDF Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RL73H2AR18FTD are identified based on strict equivalence across all critical electrical and mechanical parameters. The substitution logic requires exact matching of the following parameters:

• Resistance value: 180 mOhms
• Tolerance: ±1%
• Power rating: 0.125W (1/8W)
• Package type: 0805 (2012 Metric)
• Composition: Thick Film
• Temperature coefficient: ±100ppm/°C
• Operating temperature range: -55°C to 155°C
• Current sense functionality
• RoHS3 compliance status
• Moisture sensitivity level: 1 (Unlimited)

Parts meeting all these criteria are classified as direct equivalents and may be substituted without circuit redesign or performance degradation.

Parameter Comparison

Engineering Selection Recommendations

The RL73H2AR18FTDF is a direct equivalent substitute for the RL73H2AR18FTD. Both parts are manufactured by TE Connectivity Passive Product within the RL73 and CGS series and maintain identical electrical specifications, mechanical dimensions, and regulatory compliance certifications. Selection between these parts may be based on inventory availability, lead time, or procurement requirements, as they are functionally interchangeable in all applications requiring a 180 mOhms ±1% current sense resistor in 0805 package format. Both parts carry Active product status and ROHS3 compliance, ensuring continued availability and regulatory adherence for new designs and production runs.

Frequently Asked Questions (FAQ)

Q: Can RL73H2AR18FTDF be used as a direct replacement for RL73H2AR18FTD?

A: Yes. The RL73H2AR18FTDF is a direct equivalent substitute. All electrical parameters, mechanical dimensions, package specifications, and regulatory certifications are identical between the two parts.

Q: What are the key parameters that determine substitutability for this resistor?

A: Substitutability is determined by exact matching of resistance value (180 mOhms), tolerance (±1%), power rating (0.125W), package type (0805), composition (thick film), temperature coefficient (±100ppm/°C), operating temperature range (-55°C to 155°C), and current sense functionality. Regulatory compliance (ROHS3, REACH) and moisture sensitivity level (MSL 1) must also match.

Q: Are there any differences in the physical dimensions between these parts?

A: No. Both parts have identical dimensions: 0.079" L x 0.049" W (2.00mm x 1.25mm) with a maximum seated height of 0.026" (0.65mm). They are mechanically interchangeable on PCB layouts.

Q: What is the operating temperature range for these resistors?

A: Both parts operate across -55°C to 155°C with a temperature coefficient of ±100ppm/°C, ensuring stable performance across industrial and extended temperature applications.

Q: Are both parts RoHS compliant?

A: Yes. Both RL73H2AR18FTD and RL73H2AR18FTDF are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the moisture sensitivity level for these components?

A: Both parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements during storage and handling.

Q: Can these resistors be used in high-precision current sensing applications?

A: Yes. Both parts are specified as current sense resistors with ±1% tolerance and ±100ppm/°C temperature coefficient, suitable for precision current measurement circuits requiring stable, low-resistance performance.