RT1206FRE0746R4L Equivalent & Substitute Parts

Part Overview

The RT1206FRE0746R4L is a 46.4 Ohm ±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 widely used in precision analog circuits, signal conditioning, and measurement applications where stable resistance values are required across extended temperature ranges.

Substitute parts are identified when equivalent electrical performance can be maintained while potentially offering improved specifications, enhanced reliability certifications, or better availability. The ERA-8AHD46R4V from Panasonic represents an upgrade option with tighter tolerance and automotive-grade qualification.

Substiute Parts

RT1206FRE0746R4L

YAGEOIn Stock: 725RT1206FRE0746R4L Datasheet

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ERA-8AHD46R4V

Panasonic Electronic ComponentsIn Stock: 8427ERA-8AHD46R4V Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RT1206FRE0746R4L is determined by strict adherence to the following critical parameters:

Mandatory Matching Parameters:

• Resistance value: 46.4 Ohms (exact match required)
• Package type: 1206 (3216 Metric) form factor
• Power rating: 0.25W minimum
• Composition: Thin film technology
• Temperature coefficient: ±50ppm/°C or better
• Operating temperature range: -55°C to 155°C minimum coverage
• Number of terminations: 2 (standard SMD configuration)

Allowable Variation Parameters:

• Tolerance: May be equal or tighter (±1% or better)
• Packaging format: Tape & Reel acceptable
• Compliance certifications: May include additional qualifications (e.g., AEC-Q200)

The ERA-8AHD46R4V qualifies as a direct substitute because it maintains all mandatory parameters while offering improved tolerance specification (±0.5% versus ±1%) and automotive-grade reliability certification.

Parameter Comparison

Engineering Selection Recommendations

RT1206FRE0746R4L (YAGEO): Select this part for standard industrial and consumer applications where ±1% tolerance meets circuit requirements and cost optimization is prioritized. Active production status and unlimited MSL rating ensure reliable supply and simplified handling.

ERA-8AHD46R4V (Panasonic): Select this part for applications requiring tighter tolerance control (±0.5%) or automotive-grade reliability certification per AEC-Q200. The improved tolerance specification reduces circuit calibration drift and enhances long-term stability. Suitable for automotive, industrial control, and precision measurement applications. Both parts maintain identical thermal performance and temperature range coverage.

Both parts are ROHS3 compliant and carry MSL 1 rating, eliminating moisture-related handling constraints. Physical dimensions show negligible variation within standard manufacturing tolerances and present no PCB layout compatibility issues.

Frequently Asked Questions (FAQ)

Q: Can ERA-8AHD46R4V replace RT1206FRE0746R4L in existing designs?

A: Yes. Both parts share identical resistance value, power rating, package footprint, temperature range, and thermal coefficient. The Panasonic part offers tighter tolerance (±0.5% vs ±1%) and AEC-Q200 automotive qualification, making it a direct substitute with potential performance improvement.

Q: What is the significance of the ±0.5% tolerance improvement in the Panasonic part?

A: Tighter tolerance reduces initial resistance variation from ±1% to ±0.5%, lowering circuit calibration requirements and improving measurement accuracy in precision applications. This is particularly beneficial in analog signal conditioning and sensor interface circuits.

Q: Are the physical dimensions identical between these parts?

A: Both parts use the 1206 (3216 Metric) package with identical width (0.063"). Length varies by 0.004" (0.10mm) and height by 0.002" (0.05mm), representing negligible differences within standard manufacturing tolerances. PCB footprints and reflow profiles remain compatible.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive electronics reliability qualification standard. The Panasonic ERA-8AHD46R4V meets this specification, indicating suitability for automotive applications with enhanced reliability testing and temperature cycling validation.

Q: Are both parts available in Tape & Reel packaging?

A: Yes. Both RT1206FRE0746R4L and ERA-8AHD46R4V are supplied in Tape & Reel (TR) format, standard for automated assembly processes.

Q: Do these parts require special handling due to moisture sensitivity?

A: No. Both parts carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity constraints. Standard handling procedures apply without special drying or storage requirements.

Q: Which part should be selected for new designs?

A: Selection depends on application requirements. For standard applications, either part is acceptable. For automotive or precision measurement applications, the ERA-8AHD46R4V is preferred due to tighter tolerance and AEC-Q200 qualification. For cost-optimized designs, the RT1206FRE0746R4L remains a valid choice.