ECH-S1H473JZ Equivalent & Substitute Parts

Part Overview

The ECH-S1H473JZ is a 0.047 µF film capacitor manufactured by Panasonic Electronic Components, rated for 50V DC operation with ±5% tolerance. This radial through-hole component utilizes polyphenylene sulfide (PPS) dielectric material and is designed for high-frequency and switching applications. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and maintenance.

Substiute Parts

ECH-S1H473JZ

Panasonic Electronic ComponentsIn Stock: 879ECH-S1H473JZ Datasheet

Current PartRFQ

ECH-U1H393JX5

Panasonic Electronic ComponentsIn Stock: 3160ECH-U1H393JX5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECH-S1H473JZ is determined by the following critical parameters:

• Capacitance Value: 0.047 µF (±5% tolerance acceptable)
• Voltage Rating - DC: Minimum 50V
• Dielectric Material: Polyphenylene Sulfide (PPS) or equivalent high-frequency dielectric
• Operating Temperature Range: Must support -40°C ~ 125°C minimum
• Tolerance: ±5% or tighter

The ECH-U1H393JX5 is listed as a substitute part. However, this part exhibits a capacitance value of 0.039 µF, which falls outside the ±5% tolerance band of the original 0.047 µF specification. This represents a 17% deviation and does not qualify as a direct electrical equivalent under standard engineering substitution criteria.

Parameter Comparison

Engineering Selection Recommendations

The ECH-U1H393JX5 cannot serve as a direct electrical substitute for the ECH-S1H473JZ due to multiple incompatibilities:

1. Capacitance Mismatch: The 0.039 µF value deviates 17% from the required 0.047 µF specification, exceeding acceptable tolerance limits for most circuit applications.

2. Mounting Incompatibility: The main part is through-hole radial; the substitute is surface-mount 1210 package. These require different PCB layouts and assembly processes.

3. Package Incompatibility: Radial and 1210 packages have fundamentally different footprints and cannot be interchanged without PCB redesign.

For applications requiring the ECH-S1H473JZ, direct replacement should be sourced from Panasonic's active product lines with matching specifications: 0.047 µF capacitance, 50V DC rating, PPS dielectric, through-hole radial package, and -40°C ~ 125°C operating range. The ECH-U1H393JX5 is suitable only for applications where capacitance value, mounting type, and package form can be modified during redesign.

Frequently Asked Questions (FAQ)

Q: Can the ECH-U1H393JX5 replace the ECH-S1H473JZ in an existing circuit?

A: No. The substitute differs in capacitance value (0.039 µF vs. 0.047 µF), mounting type (surface-mount vs. through-hole), and package form (1210 vs. radial). These differences prevent direct substitution without circuit redesign and PCB layout changes.

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

A: Both parts have ±5% tolerance. However, the ECH-U1H393JX5 nominal value of 0.039 µF is 17% lower than the required 0.047 µF, placing it outside the acceptable substitution range regardless of tolerance specifications.

Q: Are both parts manufactured from the same dielectric material?

A: Both use polyphenylene sulfide (PPS) dielectric. The ECH-U1H393JX5 specifies "Metallized - Stacked" construction, which is a variant within the PPS material family. This difference, combined with the capacitance mismatch, prevents direct equivalence.

Q: What is the operating temperature range difference?

A: The ECH-S1H473JZ operates from -40°C to 125°C. The ECH-U1H393JX5 operates from -55°C to 125°C, providing a wider low-temperature range. This is compatible but does not offset other incompatibilities.

Q: Why is the main part listed as obsolete?

A: The ECH-S1H473JZ is obsolete, indicating Panasonic has discontinued this product line. Replacement parts must be sourced from active product inventories or equivalent alternatives that meet all electrical and mechanical specifications.