ECK-NTS103MF Equivalent & Substitute Parts

Part Overview

The ECK-NTS103MF is a 10000 pF ceramic capacitor rated for 440VAC with Y5V temperature coefficient, manufactured by Panasonic Electronic Components. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing system maintenance and new design implementations. The part is designed for safety-critical applications with X1 and Y2 ratings, suitable for through-hole mounting in radial disc configuration.

Substiute Parts

ECK-NTS103MF

Panasonic Electronic ComponentsIn Stock: 1033ECK-NTS103MF Datasheet

Current PartRFQ

C981U103MYVDBA7317

KEMETIn Stock: 2309C981U103MYVDBA7317 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECK-NTS103MF is determined by the following critical parameters:

• Capacitance Value: Must be 10000 pF (±20% tolerance acceptable)
• Temperature Coefficient: Must be Y5V (F) to maintain equivalent thermal stability
• Safety Ratings: Must maintain X1 and Y2 classifications for safety-critical applications
• Mounting Configuration: Must be through-hole radial disc format with formed leads
• Voltage Rating: Substitute must meet or exceed the 440VAC requirement

The KEMET C981U103MYVDBA7317 qualifies as a functional equivalent despite a lower voltage rating of 400VAC, as it maintains all other critical parameters including capacitance, tolerance, temperature coefficient, safety ratings, and mounting configuration. The voltage differential represents a design trade-off that may be acceptable depending on circuit application requirements.

Parameter Comparison

Engineering Selection Recommendations

The KEMET C981U103MYVDBA7317 is the identified substitute for the obsolete ECK-NTS103MF. Selection should be based on the following factors:

Voltage Consideration: The substitute operates at 400VAC versus the original 440VAC specification. This 40VAC reduction must be evaluated against actual circuit operating conditions. If the application operates consistently below 400VAC, the substitute is suitable. If peak voltages approach or exceed 400VAC, alternative parts with higher voltage ratings should be considered.

Compliance and Availability: The KEMET part is currently active in production with ROHS3 compliance certification, ensuring long-term availability and regulatory alignment. The original Panasonic part is obsolete with no ongoing manufacturing.

Temperature Performance: The KEMET substitute provides an extended lower operating temperature limit (-40°C versus -25°C), offering improved performance in cold environments while maintaining the same upper temperature threshold.

Physical Compatibility: Both parts use radial disc configuration with through-hole mounting. The kinked lead style of the substitute may require minor PCB layout adjustment but maintains electrical equivalence.

Frequently Asked Questions (FAQ)

Q: Can the KEMET C981U103MYVDBA7317 directly replace the Panasonic ECK-NTS103MF?

A: Direct replacement is possible with voltage rating verification. The substitute maintains identical capacitance, tolerance, temperature coefficient, and safety ratings. The 40VAC voltage reduction must be confirmed as acceptable for the specific application circuit.

Q: What is the significance of the Y5V temperature coefficient?

A: Y5V indicates the capacitor exhibits a capacitance change of -82% to +22% across the operating temperature range. This coefficient is standard for safety-rated ceramic capacitors and is maintained in the substitute part.

Q: Are the X1 and Y2 safety ratings equivalent between parts?

A: Yes. Both the original and substitute maintain X1 and Y2 classifications, indicating suitability for safety-critical applications with equivalent safety performance.

Q: Does the kinked lead style affect PCB compatibility?

A: The kinked lead style is a minor physical variation that may require PCB hole spacing verification. Standard radial disc through-hole footprints typically accommodate both formed and kinked lead styles without modification.

Q: Is the KEMET part RoHS compliant?

A: Yes, the KEMET C981U103MYVDBA7317 is ROHS3 compliant, meeting current environmental and regulatory requirements for electronic components.

Q: What is the lead spacing difference between the two parts?

A: The original ECK-NTS103MF has 0.295" (7.50mm) lead spacing, while the KEMET substitute has 0.394" (10.00mm) lead spacing. PCB footprint adjustment is required for proper component placement.