ECH-S1H183JZ Equivalent & Substitute Parts

Part Overview

The ECH-S1H183JZ is a 0.018 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 part is currently obsolete, making identification of functionally equivalent alternatives essential for design continuity and component sourcing in legacy system maintenance and repair.

Substiute Parts

ECH-S1H183JZ

Panasonic Electronic ComponentsIn Stock: 862ECH-S1H183JZ Datasheet

Current PartRFQ

ECH-U1H183GX5

Panasonic Electronic ComponentsIn Stock: 1051ECH-U1H183GX5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECH-S1H183JZ is determined by the following critical parameters:

• Capacitance Value: Must be 0.018 µF (exact match required)
• Voltage Rating: Minimum 50V DC to maintain circuit safety margins
• Dielectric Material: Polyphenylene sulfide (PPS) or metallized PPS variants maintain electrical performance characteristics
• Operating Temperature Range: Must support the application's thermal environment
• Tolerance: ±2% or tighter tolerance is acceptable as a superior alternative to ±5%

The ECH-U1H183GX5 qualifies as a functional substitute based on matching capacitance, voltage rating, dielectric material composition, and operating temperature capability. However, this substitute introduces a change in mounting technology from through-hole radial to surface-mount 1210 package format, which requires PCB redesign consideration.

Parameter Comparison

Engineering Selection Recommendations

The ECH-U1H183GX5 is the identified substitute for the obsolete ECH-S1H183JZ based on electrical parameter equivalence. Selection of this substitute requires evaluation of the following factors:

Electrical Compatibility: Both parts maintain 0.018 µF capacitance and 50V DC rating. The substitute offers improved tolerance (±2% versus ±5%), which may enhance circuit performance in precision applications.

Thermal Performance: The ECH-U1H183GX5 extends the lower operating temperature limit to -55°C, providing broader environmental coverage compared to the -40°C minimum of the original part.

Compliance Status: The substitute is ROHS3 compliant and carries active product status, ensuring long-term availability and regulatory alignment. The original part's compliance status is not specified.

Physical Integration: The transition from through-hole radial to surface-mount 1210 package requires PCB layout modification. This change impacts assembly process, board design, and mechanical mounting considerations.

Frequently Asked Questions (FAQ)

Q: Can the ECH-U1H183GX5 be used as a direct replacement without PCB modification?

A: No. The ECH-U1H183GX5 is a surface-mount component in 1210 package format, while the ECH-S1H183JZ is a through-hole radial component. PCB redesign is required to accommodate the different mounting technology and footprint.

Q: Are the electrical characteristics identical between these two parts?

A: The capacitance value (0.018 µF) and DC voltage rating (50V) are identical. The substitute offers superior tolerance (±2% versus ±5%) and extended lower temperature operation (-55°C versus -40°C). The dielectric material is PPS in both cases, though the substitute uses a metallized-stacked configuration.

Q: What is the significance of the product status difference?

A: The ECH-S1H183JZ is obsolete, indicating discontinued manufacturing and limited availability. The ECH-U1H183GX5 is active, ensuring ongoing production, supply chain availability, and manufacturer support.

Q: Does the AC voltage rating of the substitute affect DC circuit applications?

A: The ECH-U1H183GX5 specifies 30V AC rating, which is independent of its 50V DC rating. For DC-only applications, the DC rating is the controlling parameter. The 50V DC specification is sufficient for the original application.

Q: What compliance advantages does the substitute offer?

A: The ECH-U1H183GX5 is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. The original part's compliance status is not documented.