RT1206FRE074K12L Equivalent & Substitute Parts

Part Overview

The RT1206FRE074K12L is a 4.12 kOhms ±1% thin film chip resistor in 1206 (3216 Metric) package format, rated for 0.25W (1/4W) power dissipation. Manufactured by YAGEO under the RT series, this component is actively produced and ROHS3 compliant. Substitute parts are identified to provide alternatives with improved performance characteristics or enhanced reliability ratings while maintaining core electrical and mechanical compatibility.

Substiute Parts

RT1206FRE074K12L

YAGEOIn Stock: 1050RT1206FRE074K12L Datasheet

Current PartRFQ

ERA-8AEB4121V

Panasonic Electronic ComponentsIn Stock: 2551ERA-8AEB4121V Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT1206FRE074K12L is determined by the following core parameters:

• Resistance value: 4.12 kOhms (exact match required)
• Package format: 1206 (3216 Metric) (mechanical compatibility)
• Power rating: 0.25W minimum (functional requirement)
• Composition: Thin film (electrical performance class)
• Operating temperature range: -55°C ~ 155°C minimum (environmental compatibility)
• RoHS3 compliance (regulatory requirement)

The identified substitute ERA-8AEB4121V meets all mandatory substitution criteria. Enhanced specifications (±0.1% tolerance, ±25ppm/°C temperature coefficient, AEC-Q200 automotive qualification) represent performance upgrades rather than compatibility restrictions.

Parameter Comparison

Engineering Selection Recommendations

Both the RT1206FRE074K12L and ERA-8AEB4121V are active production components with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Selection between these parts depends on application-specific requirements:

The RT1206FRE074K12L is suitable for general-purpose applications where ±1% tolerance and ±50ppm/°C temperature coefficient meet circuit specifications.

The ERA-8AEB4121V provides enhanced precision (±0.1% tolerance) and improved temperature stability (±25ppm/°C) with AEC-Q200 automotive qualification. This substitute is appropriate for precision analog circuits, automotive applications, or systems requiring tighter tolerance control.

Physical dimensions differ slightly: the ERA-8AEB4121V is 0.004" (0.10mm) longer and 0.002" (0.05mm) taller. PCB layout verification is necessary to confirm clearance compatibility in space-constrained designs.

Frequently Asked Questions (FAQ)

Q: Can ERA-8AEB4121V directly replace RT1206FRE074K12L in existing designs?

A: Yes, for electrical function. Both components share identical resistance value (4.12 kOhms), power rating (0.25W), package format (1206), and operating temperature range (-55°C ~ 155°C). Physical dimensions differ by 0.10mm in length and 0.05mm in height; PCB layout must accommodate these variations.

Q: What is the significance of the tolerance difference (±1% vs ±0.1%)?

A: Tolerance defines the maximum deviation from the nominal 4.12 kOhms value. The RT1206FRE074K12L allows ±41.2 ohms deviation; the ERA-8AEB4121V allows ±4.12 ohms deviation. Applications requiring tighter resistance accuracy benefit from the substitute's enhanced precision.

Q: Does AEC-Q200 qualification affect general-purpose applications?

A: No. AEC-Q200 is an automotive reliability standard that the ERA-8AEB4121V exceeds. This qualification does not restrict use in non-automotive applications; it indicates additional qualification testing and reliability assurance.

Q: Are both components suitable for high-temperature environments?

A: Yes. Both operate across -55°C ~ 155°C. The ERA-8AEB4121V maintains tighter tolerance (±0.1%) and lower temperature coefficient (±25ppm/°C) across this range, providing superior performance stability at temperature extremes.

Q: What is the impact of the ±50ppm/°C vs ±25ppm/°C temperature coefficient?

A: Temperature coefficient defines resistance change per degree Celsius. At 100°C temperature swing, the RT1206FRE074K12L experiences up to ±0.5% resistance drift; the ERA-8AEB4121V experiences up to ±0.25% drift. Precision analog circuits benefit from the substitute's lower coefficient.

Q: Are both components RoHS3 compliant?

A: Yes. Both RT1206FRE074K12L and ERA-8AEB4121V are ROHS3 compliant with unlimited moisture sensitivity (MSL 1), meeting current environmental and regulatory requirements.