ECS-H1DC475R Equivalent & Substitute Parts

Part Overview

The ECS-H1DC475R is a 4.7 µF molded tantalum capacitor rated at 20 V, manufactured by Panasonic Electronic Components in the TEH series. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity. The part is designed for surface mount applications in the 2312 (6032 Metric) package format, suitable for general-purpose filtering and energy storage applications across industrial and consumer electronics.

Substiute Parts

ECS-H1DC475R

Panasonic Electronic ComponentsIn Stock: 1178ECS-H1DC475R Datasheet

Current PartRFQ

TAJC475M020RNJ

KYOCERA AVXIn Stock: 1166TAJC475M020RNJ Datasheet

DirectRFQ

TAJC475K035RNJ

KYOCERA AVXIn Stock: 15432TAJC475K035RNJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-H1DC475R is determined by strict alignment of the following electrical and mechanical parameters:

• Capacitance Value: Must be 4.7 µF (no tolerance variation acceptable)
• Voltage Rating: Minimum 20 V (higher ratings are acceptable for backward compatibility)
• Package / Case: Must be 2312 (6032 Metric) for PCB footprint compatibility
• Mounting Type: Must be Surface Mount
• Type: Molded Tantalum construction
• Operating Temperature Range: Must support -55°C to 125°C minimum
• Tolerance: ±20% or tighter (±10% is acceptable)

Two substitute parts meet these criteria with varying compliance and availability profiles. The TAJC475M020RNJ provides a direct electrical and mechanical equivalent with active product status and modern compliance certifications. The TAJC475K035RNJ offers higher voltage rating (35 V) and tighter tolerance (±10%), providing enhanced performance margin while maintaining identical physical dimensions and package compatibility.

Parameter Comparison

Engineering Selection Recommendations

TAJC475M020RNJ is the primary direct substitute for the ECS-H1DC475R. This part maintains identical electrical specifications (4.7 µF, 20 V, ±20% tolerance) and physical package dimensions. The component carries active product status with ROHS3 compliance and REACH unaffected certification, providing long-term supply assurance and regulatory alignment for new designs and production continuity.

TAJC475K035RNJ serves as an alternative substitute with enhanced performance characteristics. The 35 V voltage rating provides additional safety margin above the original 20 V specification, and the ±10% tolerance offers tighter capacitance control compared to the ±20% original specification. Physical dimensions remain identical, ensuring PCB compatibility. This part is also active with ROHS3 compliance. Selection of this variant is appropriate when design margins permit the higher voltage rating and improved tolerance specification.

Both substitute parts are manufactured by KYOCERA AVX with identical package geometry (2312 / 6032 Metric) and mounting type, ensuring direct PCB footprint compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can TAJC475M020RNJ be used as a direct replacement for ECS-H1DC475R?

A: Yes. The TAJC475M020RNJ matches all critical electrical parameters (4.7 µF, 20 V, ±20% tolerance) and physical dimensions (2312 package, 6.00mm x 3.20mm). Both are molded tantalum surface mount capacitors with identical operating temperature range (-55°C to 125°C) and moisture sensitivity level (MSL 1).

Q: What is the difference between TAJC475M020RNJ and TAJC475K035RNJ?

A: The primary differences are voltage rating and tolerance. TAJC475M020RNJ is rated 20 V with ±20% tolerance, matching the original specification. TAJC475K035RNJ is rated 35 V with ±10% tolerance, providing higher voltage margin and tighter capacitance control. Both maintain identical physical dimensions and package compatibility.

Q: Are there height differences between the main part and substitutes?

A: The ECS-H1DC475R has a maximum seated height of 0.106" (2.70mm), while both KYOCERA AVX substitutes have a maximum seated height of 0.110" (2.80mm). This 0.004" (0.10mm) difference is within typical PCB assembly tolerances and does not affect standard surface mount assembly processes.

Q: Do the substitute parts meet current compliance requirements?

A: Yes. Both TAJC475M020RNJ and TAJC475K035RNJ are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The original ECS-H1DC475R is RoHS non-compliant due to its obsolete status.

Q: Can TAJC475K035RNJ be used in applications originally designed for 20 V operation?

A: Yes. The 35 V rating of TAJC475K035RNJ is compatible with 20 V circuit designs. Higher voltage-rated capacitors operate safely at lower applied voltages and provide additional design margin. The identical physical package ensures PCB compatibility without modification.

Q: What packaging options are available for the substitute parts?

A: TAJC475M020RNJ is supplied in Tape & Reel (TR) packaging. TAJC475K035RNJ is supplied in Cut Tape (CT) & Digi-Reel® packaging. Both packaging formats are standard for surface mount assembly operations.