ECQ-B1H124JF Equivalent & Substitute Parts

Part Overview

The ECQ-B1H124JF is a 0.12 µF film capacitor rated for 50V DC with ±5% tolerance, manufactured by Panasonic Electronic Components. This radial through-hole component uses polyester dielectric material and operates across a temperature range of -40°C to 105°C. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design requirements and production continuity.

Substiute Parts

ECQ-B1H124JF

Panasonic Electronic ComponentsIn Stock: 708ECQ-B1H124JF Datasheet

Current PartRFQ

ECH-U1H124JX9

Panasonic Electronic ComponentsIn Stock: 9975ECH-U1H124JX9 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-B1H124JF requires matching the following critical electrical parameters: capacitance value of 0.12 µF, tolerance of ±5%, and DC voltage rating of 50V. The ECH-U1H124JX9 meets these electrical specifications. However, this substitute introduces a change in mounting technology from through-hole radial to surface-mount 2416 package format, and employs polyphenylene sulfide (PPS) metallized-stacked dielectric instead of polyester. These differences represent a functional substitution suitable only for applications where surface-mount technology and the extended temperature range (-55°C ~ 125°C) are compatible with the design requirements.

Parameter Comparison

Engineering Selection Recommendations

The ECH-U1H124JX9 provides electrical equivalence in capacitance, tolerance, and DC voltage rating. The substitute is classified as active product status with ROHS3 compliance, addressing supply chain continuity concerns associated with the obsolete ECQ-B1H124JF. Selection of this substitute requires design accommodation for surface-mount technology and PCB layout modification from radial through-hole to 2416 package footprint. The extended operating temperature range of the substitute (-55°C ~ 125°C versus -40°C ~ 105°C) provides additional thermal margin. Dielectric material change from polyester to PPS metallized-stacked does not affect the stated electrical performance parameters for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can ECH-U1H124JX9 directly replace ECQ-B1H124JF in existing PCB designs?

A: Direct PCB replacement is not possible due to mounting type difference. ECQ-B1H124JF is through-hole radial; ECH-U1H124JX9 is surface-mount 2416 package. PCB redesign and revalidation are required.

Q: Are the electrical specifications identical between these parts?

A: Capacitance (0.12 µF), tolerance (±5%), and DC voltage rating (50V) are identical. Dielectric material differs: polyester versus PPS metallized-stacked. Both materials are suitable for general-purpose applications at the specified ratings.

Q: What is the significance of the extended temperature range in ECH-U1H124JX9?

A: ECH-U1H124JX9 operates from -55°C to 125°C compared to -40°C to 105°C for ECQ-B1H124JF. This extended range provides additional thermal margin but does not alter suitability for applications within the original part's temperature specification.

Q: Is RoHS compliance a factor in substitution?

A: ECH-U1H124JX9 is ROHS3 compliant. If RoHS compliance is a design requirement, this substitute meets that criterion. Compliance status of the original ECQ-B1H124JF is not specified in available data.

Q: What packaging format does ECH-U1H124JX9 use?

A: ECH-U1H124JX9 uses 2416 (6041 Metric) surface-mount package with solder pad termination, compared to radial through-hole with PC pins for the original part.