ECQ-P1H181JZ Equivalent & Substitute Parts

Part Overview

The ECQ-P1H181JZ is a 180 pF film capacitor manufactured by Panasonic Electronic Components, rated for 50V DC operation with ±5% tolerance. This radial through-hole component utilizes polypropylene (PP) 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 production support.

Substiute Parts

ECQ-P1H181JZ

Panasonic Electronic ComponentsIn Stock: 940ECQ-P1H181JZ Datasheet

Current PartRFQ

ECH-U1H181JX5

Panasonic Electronic ComponentsIn Stock: 3752ECH-U1H181JX5 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-P1H181JZ is determined by the following critical parameters:

• Capacitance Value: 180 pF (exact match required)
• Tolerance: ±5% (electrical equivalence)
• Voltage Rating (DC): Minimum 50V (equal or higher acceptable)
• Dielectric Material: Film-based (PP, PPS, or equivalent film technology)
• Operating Temperature Range: Must support application requirements

The ECH-U1H181JX5 qualifies as a functional equivalent based on matching capacitance, tolerance, and voltage rating. However, this substitute introduces a change in mounting technology (surface mount 0805 vs. through-hole radial) and dielectric material (PPS vs. PP), which requires circuit board redesign and layout modification. The substitute is suitable only when PCB layout can accommodate surface-mount technology and the extended operating temperature range (-55°C ~ 125°C) is compatible with the application.

Parameter Comparison

Engineering Selection Recommendations

The ECH-U1H181JX5 is an active product with current manufacturing status and ROHS3 compliance, providing supply chain continuity for the obsolete ECQ-P1H181JZ. Selection of this substitute requires the following considerations:

Mounting Technology Change: The substitute requires conversion from through-hole radial to surface-mount 0805 technology. This necessitates PCB redesign and requalification of assembly processes.

Dielectric Material Difference: The substitute uses PPS metallized film instead of polypropylene. Both are film-based dielectrics suitable for high-frequency applications, but material properties differ. Verification of electrical performance in the specific application circuit is required.

Temperature Range Extension: The substitute supports -55°C ~ 125°C operation, exceeding the original -40°C ~ 85°C range. This provides additional thermal margin for applications operating at elevated temperatures.

Compliance Status: The substitute meets ROHS3 requirements and carries MSL 1 rating, indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the ECH-U1H181JX5 be used as a direct replacement for the ECQ-P1H181JZ?

A: Electrical substitution is possible based on matching capacitance (180 pF), tolerance (±5%), and voltage rating (50V DC). However, physical substitution is not direct due to different mounting technologies (surface mount vs. through hole) and package geometries. PCB redesign is required.

Q: What are the key differences between these two capacitors?

A: The main differences are mounting type (surface mount vs. through hole), package size (0805 vs. radial), dielectric material (PPS vs. PP), and operating temperature range (-55°C ~ 125°C vs. -40°C ~ 85°C). Electrical specifications for capacitance, tolerance, and voltage rating are identical.

Q: Is the PPS dielectric material equivalent to polypropylene for high-frequency applications?

A: Both PPS and PP are film-based dielectrics suitable for high-frequency and switching applications. Material properties differ, and circuit-specific performance validation is necessary to confirm equivalence in the target application.

Q: What is the impact of changing from radial through-hole to 0805 surface mount?

A: This change requires complete PCB layout redesign, footprint modification, and assembly process requalification. The 0805 package is significantly smaller (2.00mm x 1.25mm vs. 8.50mm x 4.50mm), affecting board space utilization and thermal characteristics.

Q: Does the ECH-U1H181JX5 meet RoHS compliance requirements?

A: Yes, the ECH-U1H181JX5 is ROHS3 compliant. The original ECQ-P1H181JZ compliance status is not specified in available documentation.

Q: What is the lead spacing difference, and does it affect compatibility?

A: The ECQ-P1H181JZ has 0.197" (5.00mm) lead spacing for radial through-hole mounting. The ECH-U1H181JX5 uses solder pads for surface-mount 0805 technology, eliminating traditional lead spacing. PCB footprint design must accommodate the surface-mount package geometry.