RT0402FRE0737R4L Equivalent & Substitute Parts

Part Overview

The RT0402FRE0737R4L is a 37.4 Ohm thin film chip resistor manufactured by YAGEO in the 0402 (1005 Metric) package format. This component is rated at ±1% tolerance with 0.063W (1/16W) power dissipation capability 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). Identifying equivalent and substitute parts becomes necessary when managing supply chain continuity, optimizing procurement costs, or accommodating design flexibility across manufacturing batches.

Substiute Parts

RT0402FRE0737R4L

YAGEOIn Stock: 1154RT0402FRE0737R4L Datasheet

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CPF0402B37R4E1

TE Connectivity Passive ProductIn Stock: 3128CPF0402B37R4E1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT0402FRE0737R4L is determined by the following critical parameters:

• Resistance Value: Must be 37.4 Ohms
• Package Format: Must be 0402 (1005 Metric)
• Composition: Must be Thin Film
• Power Rating: Must support minimum 0.063W (1/16W)
• Operating Temperature Range: Must encompass -55°C to 155°C
• Compliance: Must maintain RoHS3 compliance and MSL 1 rating

The CPF0402B37R4E1 qualifies as a direct substitute based on matching all critical parameters. While this substitute exhibits superior tolerance (±0.1% versus ±1%) and lower temperature coefficient (±25ppm/°C versus ±50ppm/°C), these represent performance enhancements rather than deviations from the original specification.

Parameter Comparison

Engineering Selection Recommendations

Both the RT0402FRE0737R4L and CPF0402B37R4E1 maintain Active product status with full regulatory compliance across RoHS3, REACH, and ECCN EAR99 classifications. Selection between these components should be based on application-specific requirements:

The RT0402FRE0737R4L remains the primary choice for standard applications where ±1% tolerance and ±50ppm/°C temperature coefficient meet circuit requirements. The CPF0402B37R4E1 serves applications demanding tighter tolerance control (±0.1%) and improved temperature stability (±25ppm/°C), such as precision analog circuits or temperature-sensitive measurement systems. Both components are suitable for high-reliability applications given their unlimited moisture sensitivity rating and compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can CPF0402B37R4E1 be used as a direct replacement for RT0402FRE0737R4L?

A: Yes. Both components share identical resistance values, package formats, power ratings, and operating temperature ranges. The CPF0402B37R4E1 offers improved tolerance and temperature coefficient specifications, making it functionally compatible and performance-equivalent for all applications where the original part is specified.

Q: What are the physical compatibility considerations?

A: Both parts use the 0402 (1005 Metric) package with identical maximum seated height of 0.014" (0.35mm). PCB footprints, reflow profiles, and assembly processes remain unchanged between these components.

Q: How do tolerance differences affect circuit performance?

A: The RT0402FRE0737R4L operates at ±1% tolerance, while the CPF0402B37R4E1 operates at ±0.1% tolerance. For a 37.4 Ohm resistor, this represents a tolerance band of ±0.374 Ohms versus ±0.0374 Ohms respectively. Applications requiring tighter resistance accuracy should specify the CPF0402B37R4E1.

Q: Are there supply chain or cost considerations?

A: Supply availability and pricing are external factors not addressed by this technical specification. Consult with component distributors for current inventory and cost comparisons.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both components maintain ROHS3 compliance, REACH Unaffected status, and ECCN EAR99 classification. Moisture sensitivity level remains at MSL 1 (Unlimited) for both parts.