RT0603FRE0721RL Equivalent & Substitute Parts

Part Overview

The RT0603FRE0721RL is a 21 Ohm ±1% thin film chip resistor manufactured by YAGEO in the 0603 (1608 Metric) package format. This surface mount device is rated for 0.1W (1/10W) power dissipation and operates across the temperature range of -55°C to 155°C. The component is actively produced and maintains full RoHS3 compliance with MSL 1 (Unlimited) moisture sensitivity rating. Equivalent and substitute parts are identified to support procurement flexibility, inventory optimization, and supply chain continuity for applications requiring 21 Ohm resistive elements in compact form factors.

Substiute Parts

RT0603FRE0721RL

YAGEOIn Stock: 952RT0603FRE0721RL Datasheet

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RP73PF1J21RBTDF

TE Connectivity Passive ProductIn Stock: 1954RP73PF1J21RBTDF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT0603FRE0721RL is determined by strict adherence to the following core parameters:

• Resistance Value: Must be 21 Ohms (exact match required)
• Package Format: Must be 0603 (1608 Metric) for mechanical and electrical compatibility
• Composition: Thin film construction ensures consistent performance characteristics
• Operating Temperature Range: Must support -55°C to 155°C minimum
• Termination Count: Must have 2 terminations for PCB footprint compatibility
• Regulatory Compliance: RoHS3 compliance and MSL 1 rating required

The RP73PF1J21RBTDF from TE Connectivity Passive Product qualifies as a direct substitute based on matching all mandatory parameters. Enhanced specifications in tolerance (±0.1% vs ±1%) and power rating (0.167W vs 0.1W) represent performance upgrades that maintain full backward compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the RT0603FRE0721RL and RP73PF1J21RBTDF are active production components with full RoHS3 compliance and MSL 1 ratings, ensuring regulatory alignment for current and future applications. The RP73PF1J21RBTDF offers enhanced performance specifications including tighter tolerance (±0.1% vs ±1%) and higher power dissipation capability (0.167W vs 0.1W), with improved temperature coefficient stability (±25ppm/°C vs ±50ppm/°C). Selection between these parts should be based on application-specific requirements for tolerance precision and thermal performance margins. Both components are suitable for direct substitution in 0603 package footprints without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the RP73PF1J21RBTDF replace the RT0603FRE0721RL in existing designs?

A: Yes. Both components share identical resistance values, package formats (0603), operating temperature ranges (-55°C to 155°C), and regulatory compliance status. The substitute part meets or exceeds all electrical and mechanical specifications of the original component.

Q: What are the key differences between these two parts?

A: The RP73PF1J21RBTDF provides superior tolerance accuracy (±0.1% vs ±1%), higher power rating (0.167W vs 0.1W), and better temperature coefficient performance (±25ppm/°C vs ±50ppm/°C). These represent performance enhancements rather than compatibility limitations.

Q: Are there any package or footprint considerations?

A: Both parts use the 0603 (1608 Metric) package with identical termination configuration (2 terminations). Physical dimensions are comparable (RT0603FRE0721RL: 1.60mm x 0.80mm; RP73PF1J21RBTDF: 1.55mm x 0.80mm), ensuring compatibility with standard 0603 PCB footprints.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the RT0603FRE0721RL and RP73PF1J21RBTDF are RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings, meeting current environmental and reliability standards.

Q: Which part should be selected for high-precision applications?

A: The RP73PF1J21RBTDF is the appropriate choice for applications requiring tighter tolerance specifications, as its ±0.1% tolerance provides superior accuracy compared to the ±1% tolerance of the RT0603FRE0721RL.