Vishay Cera-Mite 440LD10AP-R Equivalent & Substitute Parts

Part Overview

The Vishay Cera-Mite 440LD10AP-R is a 1000 pF ceramic capacitor rated for 760VAC with Y5U temperature coefficient, designed for safety-critical applications requiring X1, Y1 ratings. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for direct replacement in existing designs.

Substiute Parts

440LD10AP-R

Vishay Cera-MiteIn Stock: 817440LD10AP-R Datasheet

Current PartRFQ

440LD10-R

Vishay Cera-MiteIn Stock: 1940440LD10-R Datasheet

Parametric EquivalentRFQ

440LD10AD-R

Vishay Cera-MiteIn Stock: 1079440LD10AD-R Datasheet

Parametric EquivalentRFQ

C911U102MVWDBA7317

KEMETIn Stock: 2388C911U102MVWDBA7317 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Capacitance Value: Must be 1000 pF ±20%
• Temperature Coefficient: Must be Y5U (E)
• Safety Ratings: Must maintain X1, Y1 classifications
• Mounting Configuration: Must be Through Hole, Radial, Disc package
• RoHS Compliance: Must be ROHS3 Compliant

The 440LD10AP-R has two parametric equivalents within the Vishay Cera-Mite 440L series that are currently active: 440LD10-R and 440LD10AD-R. Both maintain identical electrical specifications and mechanical dimensions, differing only in packaging format and product status.

The KEMET C911U102MVWDBA7317 is classified as a manufacturer-recommended substitute but operates at a reduced voltage rating of 400VAC compared to the original 760VAC specification. This part is suitable only for applications where the lower voltage rating is acceptable.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Direct Replacement):

440LD10-R and 440LD10AD-R are direct parametric equivalents to the 440LD10AP-R. Both parts maintain identical electrical specifications, mechanical dimensions, and safety certifications. Selection between these two should be based on packaging availability and procurement requirements. 440LD10-R is available in Bulk packaging with higher inventory (1868 pcs), while 440LD10AD-R is available in Bulk packaging with 1042 pcs in stock.

Secondary Substitute (Voltage Derating Required):

C911U102MVWDBA7317 is a manufacturer-recommended alternative from KEMET with identical capacitance, tolerance, and temperature coefficient. However, this part operates at 400VAC, representing a 47% reduction from the original 760VAC rating. This substitute is applicable only in applications where the circuit voltage does not exceed 400VAC. The part features formed leads with kinked geometry, requiring PCB layout verification for lead spacing compatibility (10.00mm vs. 9.50mm on Vishay parts).

Frequently Asked Questions (FAQ)

Q: Can 440LD10-R directly replace 440LD10AP-R without circuit modification?

A: Yes. 440LD10-R is a parametric equivalent with identical capacitance (1000 pF), voltage rating (760VAC), temperature coefficient (Y5U), and safety ratings (X1, Y1). Physical dimensions and lead spacing are identical, enabling direct PCB substitution.

Q: What is the difference between 440LD10-R and 440LD10AD-R?

A: Both parts are parametric equivalents with identical electrical and mechanical specifications. The difference is packaging format: 440LD10-R is supplied in Bulk packaging, while 440LD10AD-R is also supplied in Bulk packaging. Selection should be based on inventory availability and procurement lead times.

Q: Can C911U102MVWDBA7317 be used as a drop-in replacement?

A: C911U102MVWDBA7317 can be used only if the circuit voltage does not exceed 400VAC. The part has a lower voltage rating (400VAC vs. 760VAC) and different lead geometry (formed/kinked vs. straight). PCB layout verification is required to confirm lead spacing compatibility before implementation.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitutes—440LD10-R, 440LD10AD-R, and C911U102MVWDBA7317—are ROHS3 compliant and REACH unaffected, maintaining regulatory compliance for safety-critical applications.

Q: What is the lead spacing difference between Vishay and KEMET parts?

A: Vishay Cera-Mite parts (440LD10-R, 440LD10AD-R) have 0.374" (9.50mm) lead spacing. KEMET C911U102MVWDBA7317 has 0.394" (10.00mm) lead spacing. PCB hole positioning must be verified before substitution.