ECK-ATS103MF Equivalent & Substitute Parts

Part Overview

The ECK-ATS103MF 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 substitutes necessary for ongoing production and maintenance applications. The part is designed for safety-critical applications with X1 and Y2 ratings, commonly used in AC line filtering and coupling circuits.

Substiute Parts

ECK-ATS103MF

Panasonic Electronic ComponentsIn Stock: 971ECK-ATS103MF Datasheet

Current PartRFQ

C981U103MYVDBA7317

KEMETIn Stock: 2309C981U103MYVDBA7317 Datasheet

SimilarRFQ

VY2103M63Y5UG63V7

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 10876VY2103M63Y5UG63V7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ECK-ATS103MF is determined by the following mandatory parameters:

• Capacitance: Must be 10000 pF
• Tolerance: Must be ±20%
• Safety Ratings: Must include X1 and Y2 classifications
• Mounting Type: Must be Through Hole
• Package Type: Must be Radial, Disc configuration
• Temperature Coefficient: Y5V or Y5U acceptable (both within Y5 family)

The substitute parts listed below meet these core electrical and mechanical requirements. Voltage rating may vary within acceptable limits for the application, as the original 440VAC rating provides margin for lower-rated alternatives in non-critical voltage scenarios. Operating temperature range and lead style variations are acceptable provided the minimum specifications are maintained.

Parameter Comparison

Engineering Selection Recommendations

C981U103MYVDBA7317 (KEMET) is the primary substitute option. This part maintains the Y5V temperature coefficient matching the original specification, operates across an extended temperature range (-40°C to 125°C), and carries active product status with ROHS3 compliance. The 400VAC rating provides adequate margin for most applications where the original 440VAC part was specified. Lead spacing and disc diameter are comparable to the original design.

VY2103M63Y5UG63V7 (Vishay) serves as a secondary substitute. While the temperature coefficient is Y5U rather than Y5V, both fall within the Y5 family with acceptable capacitance stability characteristics. The 300VAC rating is lower than the original specification and should be evaluated against actual circuit voltage requirements. This part is also ROHS3 compliant and carries active product status. Lead spacing differs at 7.50mm versus the original 10.00mm, requiring PCB layout verification.

Both substitutes are currently in active production with established supply chains, addressing the obsolescence of the original Panasonic component.

Frequently Asked Questions (FAQ)

Q: Can C981U103MYVDBA7317 directly replace ECK-ATS103MF without PCB modification?

A: The KEMET part maintains identical lead spacing (10.00mm) and comparable disc diameter (15.00mm vs 17.00mm), allowing direct substitution on most PCB layouts. Height differences are minimal and typically do not require design changes.

Q: Is the VY2103M63Y5UG63V7 suitable for high-voltage applications?

A: The 300VAC rating of the Vishay part is lower than the original 440VAC specification. Application suitability depends on actual circuit operating voltage. If the circuit operates at or near 440VAC, the KEMET substitute with 400VAC rating is the appropriate choice.

Q: What is the difference between Y5V and Y5U temperature coefficients?

A: Both Y5V and Y5U are within the Y5 temperature coefficient family, with capacitance variation limits of ±15% across the operating temperature range. Y5V (F) and Y5U (E) differ in specific tolerance bands but are functionally equivalent for most safety-rated AC applications.

Q: Do both substitutes meet the X1 and Y2 safety ratings?

A: Yes. Both C981U103MYVDBA7317 and VY2103M63Y5UG63V7 carry X1 and Y2 safety classifications, maintaining compliance with safety-critical application requirements.

Q: What is the impact of kinked leads on assembly?

A: Kinked leads on the KEMET and Vishay substitutes are formed for automated insertion equipment compatibility. PCB hole spacing and lead diameter remain within standard tolerances, and kinked leads do not affect electrical performance or reliability.

Q: Are both substitutes RoHS compliant?

A: Yes. Both active substitutes are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component manufacturing and distribution.