ECQ-M2124KZ Equivalent & Substitute Parts

Part Overview

The ECQ-M2124KZ is a 0.12 µF film capacitor rated for 200V DC with ±10% tolerance, manufactured by Panasonic Electronic Components in the ECQ-M series. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. The radial through-hole configuration with 15.00mm lead spacing serves general-purpose filtering and coupling applications in electronic circuits.

Substiute Parts

ECQ-M2124KZ

Panasonic Electronic ComponentsIn Stock: 1064ECQ-M2124KZ Datasheet

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ECQ-E2124KF

Panasonic Electronic ComponentsIn Stock: 1102ECQ-E2124KF Datasheet

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BFC237241124

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 793BFC237241124 Datasheet

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DME2P12K-F

Cornell Dubilier Electronics (CDE)In Stock: 1377DME2P12K-F Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECQ-M2124KZ is determined by the following mandatory parameters:

• Capacitance value: 0.12 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Mounting type: Through Hole radial configuration
• Termination: PC Pins
• Dielectric: Polyester film construction

All substitute parts listed maintain these core electrical and mechanical specifications. Voltage rating substitutes must equal or exceed the original 200V DC specification. Lead spacing and package dimensions may vary within the radial through-hole category, provided the component physically fits the PCB layout.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (ECQ-E2124KF, BFC237241124, DME2P12K-F) are active products with higher voltage ratings (250V DC) than the original ECQ-M2124KZ (200V DC), providing improved safety margin in the application circuit. All substitutes are ROHS3 compliant, supporting modern manufacturing and environmental standards.

The ECQ-E2124KF maintains Panasonic manufacturing continuity and operates to 105°C. The BFC237241124 (Vishay) and DME2P12K-F (Cornell Dubilier) extend the operating temperature range to 105°C and 125°C respectively, with the DME2P12K-F offering the widest temperature specification (-55°C ~ 125°C).

Lead spacing differs across substitutes. The original ECQ-M2124KZ uses 15.00mm spacing, while ECQ-E2124KF and DME2P12K-F use 7.50mm spacing, and BFC237241124 uses 10.00mm spacing. PCB layout compatibility must be verified before selection.

Frequently Asked Questions (FAQ)

Q: Can ECQ-E2124KF replace ECQ-M2124KZ directly on the PCB?

A: Electrical substitution is valid (same capacitance, tolerance, and higher voltage rating). However, the lead spacing differs (7.50mm vs. 15.00mm), requiring PCB layout verification or mechanical adaptation.

Q: What is the significance of the metallized dielectric in substitute parts?

A: The substitute parts use metallized polyester film instead of standard polyester. This construction maintains the same electrical performance while supporting higher voltage ratings and extended temperature ranges.

Q: Are all substitutes suitable for the same temperature range as the original?

A: No. The ECQ-M2124KZ operates -40°C ~ 85°C. Substitutes operate at higher maximum temperatures (105°C or 125°C), which is compatible with the original specification but not required. Minimum operating temperature varies: ECQ-E2124KF matches at -40°C, while BFC237241124 and DME2P12K-F extend to -55°C.

Q: Which substitute offers the best long-term availability?

A: All three substitutes are active products. ECQ-E2124KF maintains Panasonic brand continuity. BFC237241124 and DME2P12K-F are established alternatives from major manufacturers with consistent market presence.

Q: Can I use a 250V rated capacitor in a 200V circuit?

A: Yes. Using a higher voltage-rated component provides additional safety margin and is standard engineering practice. The circuit will function identically.