PVC1221 Film Capacitor Equivalent & Substitute Parts

Part Overview

The PVC1221 is a 1000 pF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 1.2 kV DC voltage rating and polypropylene dielectric. This component is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and procurement planning. The radial through-hole configuration and ±10% tolerance establish the baseline parameters for substitution compatibility.

Substiute Parts

PVC1221

Cornell Dubilier Electronics (CDE)In Stock: 774PVC1221 Datasheet

Current PartRFQ

B32672L8102J000

EPCOS - TDK ElectronicsIn Stock: 16666B32672L8102J000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PVC1221 is determined by the following critical parameters:

Electrical Compatibility Requirements:

• Capacitance value must equal 1000 pF
• Voltage rating must meet or exceed 1200V DC
• Dielectric material must be polypropylene (PP) or metallized polypropylene
• Tolerance must accommodate ±10% or tighter

Mechanical Compatibility Requirements:

• Mounting type must be through-hole
• Package configuration must be radial
• Termination must be PC pins
• Lead spacing must be compatible with 0.969" (24.60mm) pitch or smaller

Compliance Requirements:

• RoHS3 compliance required
• REACH unaffected status required

The B32672L8102J000 from EPCOS - TDK Electronics satisfies these substitution criteria through equivalent capacitance, superior voltage rating, tighter tolerance, and compatible through-hole radial configuration.

Parameter Comparison

Engineering Selection Recommendations

The B32672L8102J000 serves as a direct functional substitute for the obsolete PVC1221. Selection of this substitute is supported by the following factors:

Electrical Performance: The substitute maintains identical capacitance at 1000 pF and provides superior voltage rating margin (2000V DC versus 1200V DC), ensuring safe operation in the original application circuit. The tighter ±5% tolerance improves circuit performance compared to the ±10% specification of the original part.

Mechanical Compatibility: Both components feature through-hole radial configuration with PC pin termination. The substitute's smaller lead spacing (0.591" versus 0.969") accommodates the original PCB layout without modification, as smaller spacing is compatible with larger pitch designs.

Compliance and Availability: The substitute maintains ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the original part. Active product status ensures long-term availability and supply chain continuity, addressing the obsolescence of the PVC1221.

Temperature Performance: The substitute's extended upper operating temperature limit (110°C versus 105°C) provides additional thermal margin for system reliability.

Frequently Asked Questions (FAQ)

Q: Can the B32672L8102J000 be used as a direct replacement for the PVC1221 without circuit modification?

A: Yes. Both components share identical capacitance (1000 pF), compatible through-hole radial mounting, and PC pin termination. The substitute's higher voltage rating and tighter tolerance present no compatibility issues. The smaller lead spacing (15.00mm versus 24.60mm) fits existing PCB layouts designed for the larger pitch.

Q: What is the significance of the voltage rating difference between the two parts?

A: The PVC1221 operates at 1200V DC, while the B32672L8102J000 operates at 2000V DC. The substitute provides 67% additional voltage margin, enhancing circuit safety and reliability. This higher rating does not affect circuit operation when the original design voltage remains below 1200V DC.

Q: How does the tolerance difference impact circuit performance?

A: The PVC1221 specifies ±10% tolerance, while the B32672L8102J000 specifies ±5% tolerance. The tighter tolerance of the substitute reduces capacitance variation across production batches, improving circuit consistency and performance predictability. Applications requiring precise capacitance values benefit from this improvement.

Q: Are there any thermal considerations when substituting these parts?

A: Both components operate across the -55°C to 105°C range. The substitute extends the upper limit to 110°C, providing additional thermal headroom. No thermal derating is required for the substitute in applications within the original temperature specification.

Q: What is the impact of the metallized polypropylene dielectric in the substitute?

A: The substitute uses metallized polypropylene, a standard construction for high-frequency and high-pulse applications. This construction maintains polypropylene dielectric properties while supporting the higher voltage rating. For general-purpose applications, this construction presents no compatibility concerns.

Q: Does the smaller physical size of the substitute affect PCB layout?

A: The substitute (18.00mm L x 5.00mm W) is physically smaller than the original (10.70mm Dia x 31.80mm L). The critical parameter for PCB compatibility is lead spacing: the substitute's 15.00mm spacing accommodates PCB holes designed for the original 24.60mm spacing. Physical size reduction may provide additional PCB layout flexibility.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the PVC1221 and B32672L8102J000 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and use.