RT0402FRE0721R5L Equivalent & Substitute Parts

Part Overview

The RT0402FRE0721R5L is a 21.5 Ohm thin film chip resistor manufactured by YAGEO in the 0402 (1005 Metric) package format. This component is rated at 1/16W (0.063W) with ±1% tolerance and operates across the temperature range of -55°C to 155°C. The part maintains Active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Alternative components may be required due to inventory constraints, specific tolerance requirements, or supply chain considerations.

Substiute Parts

RT0402FRE0721R5L

YAGEOIn Stock: 764RT0402FRE0721R5L Datasheet

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CPF0402B21R5E1

TE Connectivity Passive ProductIn Stock: 1117CPF0402B21R5E1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The CPF0402B21R5E1 qualifies as a direct substitute based on the following alignment of critical parameters:

• Identical resistance value: 21.5 Ohms
• Identical package format: 0402 (1005 Metric)
• Identical physical dimensions: 0.039" L x 0.020" W (1.00mm x 0.50mm)
• Identical power rating: 0.063W (1/16W)
• Identical composition: Thin Film
• Identical operating temperature range: -55°C to 155°C
• Identical termination count: 2
• Identical RoHS3 compliance status
• Identical MSL rating: 1 (Unlimited)

The substitute part offers improved tolerance (±0.1% versus ±1%) and superior temperature coefficient (±25ppm/°C versus ±50ppm/°C), making it suitable for applications requiring tighter specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RT0402FRE0721R5L and CPF0402B21R5E1 maintain Active product status with full RoHS3 compliance and identical environmental ratings. The CPF0402B21R5E1 provides enhanced performance characteristics through tighter tolerance (±0.1% versus ±1%) and lower temperature coefficient (±25ppm/°C versus ±50ppm/°C) while maintaining identical electrical and mechanical specifications. Selection between these components should be based on application-specific tolerance and stability requirements, with both parts suitable for equivalent circuit functionality.

Frequently Asked Questions (FAQ)

Q: Can the CPF0402B21R5E1 be used as a direct replacement for the RT0402FRE0721R5L?

A: Yes. Both components share identical resistance values, package formats, power ratings, operating temperature ranges, and physical dimensions. The substitute part is mechanically and electrically compatible for direct PCB substitution.

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

A: The primary differences are tolerance and temperature coefficient. The CPF0402B21R5E1 offers ±0.1% tolerance compared to ±1% for the RT0402FRE0721R5L, and a temperature coefficient of ±25ppm/°C versus ±50ppm/°C. Both parts are thin film resistors with identical package specifications.

Q: Are both parts RoHS compliant?

A: Yes. Both the RT0402FRE0721R5L and CPF0402B21R5E1 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity ratings.

Q: Will the substitute part fit the same PCB footprint?

A: Yes. Both components use the 0402 (1005 Metric) package with identical dimensions of 0.039" L x 0.020" W (1.00mm x 0.50mm) and maximum seated height of 0.014" (0.35mm).

Q: Which part should I select for precision applications?

A: The CPF0402B21R5E1 is suitable for applications requiring tighter tolerance specifications due to its ±0.1% tolerance rating and lower temperature coefficient of ±25ppm/°C.