RT0402FRE0738R3L Equivalent & Substitute Parts

Part Overview

The RT0402FRE0738R3L is a 38.3 Ohm ±1% thin film chip resistor in 0402 (1005 Metric) package manufactured by YAGEO. This component is rated for 0.063W (1/16W) power dissipation with an operating temperature range of -55°C to 155°C. The part maintains Active product status and is RoHS3 compliant with MSL Level 1 rating.

Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

RT0402FRE0738R3L

YAGEOIn Stock: 756RT0402FRE0738R3L Datasheet

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CPF0402B38R3E1

TE Connectivity Passive ProductIn Stock: 22821CPF0402B38R3E1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT0402FRE0738R3L is determined by the following criteria:

• Resistance value: 38.3 Ohms (exact match required)
• Package type: 0402 (1005 Metric) form factor
• Power rating: Minimum 0.063W (1/16W)
• Composition: Thin film construction
• Operating temperature range: Must support -55°C to 155°C minimum
• Compliance: RoHS3 and REACH requirements

The CPF0402B38R3E1 meets all substitution criteria with identical resistance, package, power rating, and temperature range specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the RT0402FRE0738R3L and CPF0402B38R3E1 are Active products with full RoHS3 compliance and REACH unaffected status. The CPF0402B38R3E1 offers tighter tolerance (±0.1% versus ±1%) and lower temperature coefficient (±25ppm/°C versus ±50ppm/°C), providing enhanced precision characteristics while maintaining identical mechanical and thermal specifications. Selection between these parts depends on application-specific tolerance and stability requirements within the specified operating range.

Frequently Asked Questions (FAQ)

Q: Can the CPF0402B38R3E1 directly replace the RT0402FRE0738R3L?

A: Yes. Both parts share identical resistance value (38.3 Ohms), package type (0402), power rating (0.063W), and operating temperature range (-55°C to 155°C). Mechanical and electrical compatibility is maintained.

Q: What is the difference in tolerance between these parts?

A: The RT0402FRE0738R3L has ±1% tolerance, while the CPF0402B38R3E1 has ±0.1% tolerance. The substitute provides tighter tolerance specifications.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.039" L x 0.020" W (1.00mm x 0.50mm) with maximum seated height of 0.014" (0.35mm), ensuring identical PCB footprint compatibility.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both are RoHS3 compliant, REACH unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity ratings.

Q: What is the temperature coefficient difference?

A: The RT0402FRE0738R3L has ±50ppm/°C temperature coefficient, while the CPF0402B38R3E1 has ±25ppm/°C. The substitute exhibits superior temperature stability.