RT0402FRE0712R4L Equivalent & Substitute Parts

Part Overview

The RT0402FRE0712R4L is a 12.4 Ohm thin film chip resistor manufactured by YAGEO in the 0402 (1005 Metric) package format. This component is rated for 0.063W (1/16W) power dissipation 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). Identifying equivalent and substitute parts becomes necessary when managing supply chain continuity, optimizing procurement costs, or accommodating design flexibility across manufacturing batches.

Substiute Parts

RT0402FRE0712R4L

YAGEOIn Stock: 867RT0402FRE0712R4L Datasheet

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CPF0402B12R4E1

TE Connectivity Passive ProductIn Stock: 2046CPF0402B12R4E1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT0402FRE0712R4L is determined by strict alignment with the following critical parameters:

• Resistance Value: Must be exactly 12.4 Ohms
• Package Format: Must be 0402 (1005 Metric) with identical footprint and termination count (2 terminations)
• Power Rating: Must support minimum 0.063W (1/16W) dissipation
• Composition: Thin film construction required for performance consistency
• Operating Temperature Range: Must encompass or exceed -55°C to 155°C
• Compliance: RoHS3 compliance and MSL 1 rating required

The CPF0402B12R4E1 qualifies as a direct substitute based on these parameters. While it offers enhanced tolerance (±0.1% versus ±1%) and improved temperature coefficient (±25ppm/°C versus ±50ppm/°C), these represent performance upgrades rather than deviations from the core substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

Both the RT0402FRE0712R4L and CPF0402B12R4E1 maintain Active product status with full regulatory compliance. Selection between these parts should be based on application-specific tolerance and stability requirements. The RT0402FRE0712R4L provides standard performance characteristics suitable for general-purpose applications. The CPF0402B12R4E1 offers tighter tolerance control and superior temperature stability, making it appropriate for precision measurement circuits or temperature-sensitive applications where the enhanced specifications provide measurable benefit. Both components satisfy identical compliance requirements (RoHS3, REACH Unaffected, MSL 1) and operate within the same thermal envelope.

Frequently Asked Questions (FAQ)

Q: Can CPF0402B12R4E1 be used as a direct replacement for RT0402FRE0712R4L in existing designs?

A: Yes. Both components share identical resistance value (12.4 Ohms), package format (0402), power rating (0.063W), and operating temperature range (-55°C to 155°C). The physical footprint and termination configuration are identical, enabling direct PCB substitution without layout modifications.

Q: What is the significance of the tolerance difference between ±1% and ±0.1%?

A: Tolerance defines the maximum deviation from the nominal resistance value. The RT0402FRE0712R4L allows ±1.24 Ohm variation around 12.4 Ohms, while the CPF0402B12R4E1 restricts variation to ±0.0124 Ohms. This distinction is relevant only in applications where precise resistance values directly impact circuit performance.

Q: Are there packaging or moisture sensitivity differences between these parts?

A: No. Both components are supplied in Tape & Reel (TR) format with MSL 1 rating (Unlimited moisture sensitivity), indicating no special storage or handling requirements beyond standard component practices.

Q: Does the temperature coefficient difference affect interchangeability?

A: The temperature coefficient (±50ppm/°C versus ±25ppm/°C) describes resistance drift over temperature. Both coefficients remain within acceptable ranges for the -55°C to 155°C operating window. Selection should reflect whether the application requires the enhanced stability of the CPF0402B12R4E1.

Q: Are both parts currently available for procurement?

A: Both components maintain Active product status. Inventory availability should be confirmed with your component supplier, as stock levels vary by distributor and time period.