ECQ-M2104KZ Equivalent & Substitute Parts

Part Overview

The ECQ-M2104KZ is a 0.1 µF film capacitor rated for 200V DC operation with polyester dielectric material in a radial through-hole package. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement continuity. The ECQ-M series has been superseded by newer product lines while maintaining functional compatibility through equivalent electrical specifications.

Substiute Parts

ECQ-M2104KZ

Panasonic Electronic ComponentsIn Stock: 1201ECQ-M2104KZ Datasheet

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ECQ-E2104KF

Panasonic Electronic ComponentsIn Stock: 22717ECQ-E2104KF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-M2104KZ is based on the following critical parameters:

• Capacitance Value: Must be 0.1 µF (exact match required)
• Tolerance: ±10% (standard tolerance maintained)
• Voltage Rating - DC: Minimum 200V (equal or higher ratings are acceptable)
• Dielectric Material: Polyester (functional equivalence maintained)
• Mounting Type: Through Hole (package form factor compatibility)
• Package / Case: Radial (physical and electrical interface compatibility)
• Termination: PC Pins (board connection compatibility)

The ECQ-E2104KF qualifies as a direct substitute based on these parameters. While it features a higher DC voltage rating (250V) and extended operating temperature range (-40°C ~ 105°C), these represent improvements over the original specification and do not compromise compatibility.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E2104KF is the qualified substitute for the obsolete ECQ-M2104KZ. Selection is based on the following factors:

• Product Status: The ECQ-E2104KF maintains active production status, ensuring long-term availability and supply chain continuity.
• Electrical Equivalence: Both parts share identical capacitance (0.1 µF) and tolerance (±10%) specifications. The substitute's higher DC voltage rating (250V vs. 200V) provides additional design margin without introducing incompatibility.
• Compliance: The ECQ-E2104KF is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.
• Physical Compatibility: Both components feature radial through-hole packages with PC pin termination, enabling direct board-level substitution.
• Lead Spacing Consideration: The substitute features reduced lead spacing (0.295" vs. 0.591"), which may require PCB layout verification for existing designs.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E2104KF be used as a direct replacement for the ECQ-M2104KZ?

A: Yes, the ECQ-E2104KF is electrically and functionally equivalent. Both components share the same capacitance value (0.1 µF), tolerance (±10%), and dielectric material (polyester). The substitute's higher voltage rating and extended temperature range do not compromise compatibility. However, the reduced lead spacing (7.50mm vs. 15.00mm) requires PCB layout verification.

Q: What is the significance of the lead spacing difference?

A: Lead spacing determines the physical distance between component pins on the PCB. The ECQ-E2104KF has a lead spacing of 0.295" (7.50mm) compared to the ECQ-M2104KZ at 0.591" (15.00mm). Existing PCB designs must be evaluated to confirm that the reduced spacing accommodates the substitute component without requiring layout modifications.

Q: Why does the ECQ-E2104KF have a higher voltage rating?

A: The ECQ-E2104KF is rated for 250V DC compared to the ECQ-M2104KZ at 200V DC. This represents an improvement in the substitute design and provides additional safety margin in applications operating at or near the original 200V specification. Higher voltage ratings do not introduce incompatibility.

Q: Is the ECQ-E2104KF RoHS compliant?

A: Yes, the ECQ-E2104KF is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards. The original ECQ-M2104KZ compliance status is not specified in available documentation.

Q: What is the difference between polyester and metallized polyester dielectric?

A: Both the ECQ-M2104KZ (polyester) and ECQ-E2104KF (polyester, metallized) use polyester as the base dielectric material. Metallization refers to the application of a thin metal layer to the dielectric surface, which is a manufacturing enhancement that does not affect functional compatibility for this application category.

Q: Are there inventory considerations for selecting the substitute?

A: The ECQ-E2104KF is available in active production with 22,697 pieces in stock, ensuring reliable procurement. The ECQ-M2104KZ, being obsolete, has limited remaining inventory (1,103 pieces) and should not be relied upon for new designs or long-term supply requirements.