ECQ-E1684KZ Equivalent & Substitute Parts

Part Overview

The ECQ-E1684KZ is a 0.68 µF film capacitor manufactured by Panasonic Electronic Components, rated for 100V DC operation with polyester metallized dielectric construction. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing system maintenance and new design implementations. The radial through-hole configuration and ±10% tolerance specification define its primary application scope in DC filtering, DC link, and high-frequency switching circuits.

Substiute Parts

ECQ-E1684KZ

Panasonic Electronic ComponentsIn Stock: 1026ECQ-E1684KZ Datasheet

Current PartRFQ

ECQ-E2684KF

Panasonic Electronic ComponentsIn Stock: 11063ECQ-E2684KF Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-E1684KZ is determined by the following critical parameters:

• Capacitance Value: Must remain 0.68 µF to maintain circuit functionality
• Tolerance: ±10% specification must be maintained
• Dielectric Material: Polyester metallized construction required for performance characteristics
• Mounting Type & Package: Through-hole radial configuration necessary for PCB compatibility
• Lead Spacing: 0.591" (15.00mm) spacing required for footprint compatibility
• Voltage Rating: Substitute must meet or exceed 100V DC minimum requirement

The ECQ-E2684KF qualifies as a direct substitute based on these parameters. While it features enhanced voltage rating (250V DC) and extended operating temperature range (-40°C ~ 105°C), these represent improvements that do not compromise compatibility. The identical capacitance, tolerance, dielectric material, mounting configuration, and lead spacing ensure functional and mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E2684KF is the qualified substitute for the obsolete ECQ-E1684KZ. Selection is based on the following engineering criteria:

• Product Status: The ECQ-E2684KF maintains active production status, ensuring long-term availability and supply chain continuity
• Functional Equivalence: Identical capacitance (0.68 µF) and tolerance (±10%) preserve circuit performance
• Enhanced Ratings: The 250V DC rating and 150V AC rating exceed the original 100V DC specification, providing operational margin without circuit modification
• Temperature Performance: Extended operating range (-40°C ~ 105°C) accommodates broader environmental conditions
• Compliance: ECQ-E2684KF is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements
• Physical Compatibility: Matching lead spacing (15.00mm) and radial through-hole configuration ensure direct PCB footprint compatibility

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E2684KF be used as a direct replacement for the ECQ-E1684KZ?

A: Yes. Both components share identical capacitance (0.68 µF), tolerance (±10%), dielectric material (polyester metallized), mounting type (through-hole radial), and lead spacing (15.00mm). The ECQ-E2684KF's higher voltage rating and extended temperature range do not compromise compatibility.

Q: What is the physical size difference between these parts?

A: The ECQ-E1684KZ measures 0.669" L × 0.276" W (17.00mm × 7.00mm) with 0.512" seated height. The ECQ-E2684KF measures 0.728" L × 0.236" W (18.50mm × 6.00mm) with 0.571" seated height. Both maintain the same 0.591" (15.00mm) lead spacing for PCB compatibility.

Q: Are there any circuit design considerations when substituting?

A: The ECQ-E2684KF's higher voltage rating (250V DC vs. 100V DC) and extended temperature range (-40°C ~ 105°C vs. -40°C ~ 85°C) represent performance enhancements. No circuit modifications are required for substitution in applications originally designed for the ECQ-E1684KZ.

Q: What certifications apply to the substitute part?

A: The ECQ-E2684KF is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Why is the ECQ-E1684KZ classified as obsolete?

A: Obsolescence reflects Panasonic's discontinuation of this product line. The ECQ-E2684KF, part of the active ECQ-E(F) series, provides equivalent functionality with enhanced specifications and ongoing manufacturing support.