440LD47EA-R Equivalent & Substitute Parts

Part Overview

The 440LD47EA-R is a 4700 pF ceramic capacitor rated for 760VAC with Y5U temperature coefficient, manufactured by Vishay Cera-Mite in the Cera-Mite 440L series. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part is designed for safety-rated applications with X1, Y1 ratings and operates across -30°C to 125°C.

Substiute Parts

440LD47EA-R

Vishay Cera-MiteIn Stock: 708440LD47EA-R Datasheet

Current PartRFQ

440LD47-R

Vishay Cera-MiteIn Stock: 1006440LD47-R Datasheet

Parametric EquivalentRFQ

440LD47AD-R

Vishay Cera-MiteIn Stock: 1014440LD47AD-R Datasheet

Parametric EquivalentRFQ

440LD47XT-R

Vishay Cera-MiteIn Stock: 1095440LD47XT-R Datasheet

Parametric EquivalentRFQ

C971U472MVWDBA7317

KEMETIn Stock: 7049C971U472MVWDBA7317 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

• Capacitance: 4700 pF (exact match required)
• Tolerance: ±20% (exact match required)
• Temperature Coefficient: Y5U (E) (exact match required)
• Ratings: X1, Y1 (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Disc (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

Substitutes are grouped into two categories:

Parametric Equivalents (Vishay Cera-Mite): Parts 440LD47-R, 440LD47AD-R, and 440LD47XT-R are direct parametric equivalents with identical electrical specifications and physical dimensions. These parts differ only in packaging format (Bulk) and product status (Active vs. Obsolete).

Manufacturer Recommended Equivalent (KEMET): Part C971U472MVWDBA7317 meets all critical electrical parameters but operates at 400VAC rated voltage (lower than the 760VAC main part) and has different physical dimensions and lead configuration.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes: Parts 440LD47-R, 440LD47AD-R, and 440LD47XT-R are direct substitutes for 440LD47EA-R. All three are active products from Vishay Cera-Mite with identical electrical and mechanical specifications. Selection among these three should be based on packaging availability and inventory requirements. All three maintain ROHS3 compliance and are suitable for direct board-level replacement without design modification.

Secondary Substitute: Part C971U472MVWDBA7317 from KEMET is a manufacturer-recommended equivalent with matching electrical parameters but operates at 400VAC rated voltage compared to the 760VAC rating of the main part. This part also features different physical dimensions (0.551" diameter vs. 0.618" diameter) and kinked lead configuration versus straight leads. Selection of this part requires circuit-level voltage rating verification to ensure 400VAC rating is sufficient for the application.

Frequently Asked Questions (FAQ)

Q: Can 440LD47-R, 440LD47AD-R, and 440LD47XT-R be used interchangeably with 440LD47EA-R?

A: Yes. These three parts are parametric equivalents with identical capacitance, voltage rating, temperature coefficient, and physical dimensions. The only differences are packaging format and product status. All are suitable for direct substitution without circuit modification.

Q: What is the difference between the Vishay substitutes and the KEMET C971U472MVWDBA7317?

A: The KEMET part has a lower voltage rating (400VAC vs. 760VAC), smaller physical diameter (0.551" vs. 0.618"), different lead spacing (0.394" vs. 0.374"), and kinked leads instead of straight leads. Use this part only if your circuit operates at 400VAC or lower and PCB layout accommodates the different dimensions.

Q: Why is 440LD47EA-R marked as obsolete?

A: The main part is obsolete, but active equivalents are available from the same manufacturer series. The three Vishay alternatives (440LD47-R, 440LD47AD-R, 440LD47XT-R) provide continued supply for this specification.

Q: Are all substitutes ROHS3 compliant?

A: Yes. All listed substitutes maintain ROHS3 compliance, matching the environmental certification of the original part.

Q: Does lead configuration affect PCB compatibility?

A: Yes. The KEMET C971U472MVWDBA7317 features kinked formed leads, while Vishay substitutes have straight leads. PCB hole spacing and lead forming requirements must be verified before selection. The Vishay substitutes maintain identical lead spacing (0.374" / 9.50mm) and straight lead configuration as the original part.