440LD22MMAJ-R Equivalent & Substitute Parts

Part Overview

The 440LD22MMAJ-R is a 2200 pF ceramic capacitor rated for 760VAC with Y5U temperature coefficient, manufactured by Vishay Cera-Mite as part of the 440L series. This component is classified as obsolete, though 938 units remain in stock. The part is designed for safety-critical applications requiring X1, Y1 ratings and operates across -30°C to 125°C. Due to its obsolete status, identifying active equivalent and substitute parts is essential for design continuity and long-term supply chain reliability.

Substiute Parts

440LD22MMAJ-R

Vishay Cera-MiteIn Stock: 1029440LD22MMAJ-R Datasheet

Current PartRFQ

440LD22-R

Vishay Cera-MiteIn Stock: 2632440LD22-R Datasheet

Parametric EquivalentRFQ

440LD22AD-R

Vishay Cera-MiteIn Stock: 939440LD22AD-R Datasheet

Parametric EquivalentRFQ

440LD22UG-R

Vishay Cera-MiteIn Stock: 781440LD22UG-R Datasheet

Parametric EquivalentRFQ

440LD22UN1A-R

Vishay Cera-MiteIn Stock: 1127440LD22UN1A-R Datasheet

Parametric EquivalentRFQ

C931U222MVWDBA7317

KEMETIn Stock: 6500C931U222MVWDBA7317 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 440LD22MMAJ-R is determined by strict equivalence across the following critical parameters: capacitance value (2200 pF), tolerance (±20%), temperature coefficient (Y5U), safety ratings (X1, Y1), mounting type (Through Hole), and package configuration (Radial, Disc). Voltage rating and operating temperature range are secondary considerations that may vary within acceptable limits for specific applications.

The substitute parts are grouped into two categories:

Parametric Equivalents (Vishay Cera-Mite 440L Series): Parts 440LD22-R, 440LD22AD-R, 440LD22UG-R, and 440LD22UN1A-R maintain identical electrical specifications and physical dimensions as the main part. These differ only in packaging format (Bulk vs. standard) and product status (Active vs. Obsolete). All are ROHS3 compliant with MSL rating of 1 (Unlimited).

Manufacturer Recommended Equivalent (KEMET): Part C931U222MVWDBA7317 provides functional equivalence with identical capacitance, tolerance, temperature coefficient, and safety ratings. This part operates at 400VAC (lower than the 760VAC rating) and features a slightly different physical footprint (0.394" diameter vs. 0.429" diameter, 10.00mm lead spacing vs. 9.50mm).

Parameter Comparison

Engineering Selection Recommendations

For direct replacement of the obsolete 440LD22MMAJ-R, the Vishay Cera-Mite parts 440LD22-R, 440LD22AD-R, 440LD22UG-R, and 440LD22UN1A-R are preferred selections. These parts maintain identical electrical and mechanical specifications, ensuring drop-in compatibility without circuit redesign. All four alternatives are currently in active production status with substantial inventory availability (765 to 2532 units), providing supply chain continuity. ROHS3 compliance and REACH unaffected status are maintained across all Vishay equivalents.

The KEMET C931U222MVWDBA7317 serves as a secondary alternative when Vishay parts are unavailable. This part maintains electrical equivalence in capacitance, tolerance, temperature coefficient, and safety ratings. However, the reduced voltage rating (400VAC vs. 760VAC) and modified physical footprint (0.394" diameter, 10.00mm lead spacing) require circuit board layout verification and voltage margin assessment before implementation. The extended operating temperature range (-40°C to 125°C) provides additional thermal margin. ROHS3 compliance is confirmed.

Frequently Asked Questions (FAQ)

Q: Can 440LD22-R be used as a direct replacement for 440LD22MMAJ-R?

A: Yes. Both parts share identical capacitance (2200 pF), tolerance (±20%), voltage rating (760VAC), temperature coefficient (Y5U), safety ratings (X1, Y1), and physical dimensions. The primary difference is product status: 440LD22-R is active production while 440LD22MMAJ-R is obsolete. No circuit modifications are required.

Q: What is the difference between 440LD22-R, 440LD22AD-R, 440LD22UG-R, and 440LD22UN1A-R?

A: These four parts are parametric equivalents with identical electrical specifications and physical footprints. Differences exist only in packaging format (Bulk vs. standard) and internal manufacturing codes. All are suitable for the same applications and circuit positions.

Q: Can C931U222MVWDBA7317 replace 440LD22MMAJ-R in all applications?

A: Functional substitution is possible for applications where the 400VAC rating is sufficient. The reduced voltage rating requires verification that circuit operating voltages remain below 400VAC with appropriate safety margins. The modified lead spacing (10.00mm vs. 9.50mm) necessitates PCB layout confirmation. The extended temperature range (-40°C to 125°C) is compatible with the original specification.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts, including both Vishay and KEMET options, carry ROHS3 compliance certification and are REACH unaffected.

Q: What inventory levels are available for each substitute part?

A: Vishay 440LD22-R: 2532 units; Vishay 440LD22AD-R: 917 units; Vishay 440LD22UG-R: 765 units; Vishay 440LD22UN1A-R: 1115 units; KEMET C931U222MVWDBA7317: 6483 units.