PVC1039 Film Capacitor Equivalent & Substitute Parts

Part Overview

The PVC1039 is a 0.39 µF polyester film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 100V DC operation with ±10% tolerance. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives from active product lines. The radial through-hole configuration and general-purpose application profile support direct substitution with compatible film capacitor designs meeting identical electrical specifications.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	0.39 µF	Critical - must match exactly
Voltage Rating (DC)	100V	Critical - minimum requirement
Tolerance	±10%	Critical - determines circuit performance
Dielectric Material	Polyester	Critical - defines electrical characteristics
Mounting Type	Through Hole Radial	Critical - PCB compatibility
Operating Temperature Range	-55°C ~ 125°C	Important - application environment
Lead Spacing	1.343" (34.10mm)	Important - PCB footprint compatibility
RoHS Status	ROHS3 Compliant	Important - regulatory compliance

Substitute Part Grouping Explanation

Substitution of the PVC1039 is based on the following electrical and mechanical parameters:

Critical Matching Parameters:

Capacitance value: 0.39 µF (exact match required)
DC voltage rating: 100V minimum
Tolerance: ±10%
Dielectric type: Polyester film
Mounting configuration: Through-hole radial

Compatible Substitutes: The BFC237321394 (Vishay Beyschlag/Draloric/BC Components, MKT373 series) satisfies all critical electrical parameters. Both components feature identical capacitance, tolerance, and DC voltage ratings. The substitute maintains polyester dielectric construction and through-hole radial mounting. Physical dimensions differ due to metallized film construction in the substitute, resulting in a more compact package (17.50mm L x 5.00mm W vs. 12.70mm Dia x 40.60mm L for the original).

Parameter Comparison

Parameter	PVC1039 (CDE)	BFC237321394 (Vishay)	Match Status
Capacitance	0.39 µF	0.39 µF	Exact Match
Tolerance	±10%	±10%	Exact Match
Voltage Rating (DC)	100V	100V	Exact Match
Voltage Rating (AC)	70V	63V	Substitute Lower
Dielectric Material	Polyester	Polyester, Metallized	Compatible
Operating Temperature Range	-55°C ~ 125°C	-55°C ~ 105°C	Substitute Narrower
Mounting Type	Through Hole Radial	Through Hole Radial	Exact Match
Lead Spacing	1.343" (34.10mm)	0.591" (15.00mm)	Different
Package Dimensions	0.500" Dia x 1.598" L	0.689" L x 0.197" W	Different
Product Status	Obsolete	Active	Substitute Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Exact Match
MSL Rating	1 (Unlimited)	1 (Unlimited)	Exact Match

Engineering Selection Recommendations

Primary Substitute: BFC237321394

The BFC237321394 qualifies as a direct electrical substitute for the PVC1039 based on matching capacitance (0.39 µF), tolerance (±10%), and DC voltage rating (100V). Both components are ROHS3 compliant and carry MSL rating 1, satisfying regulatory and environmental requirements.

Considerations for Implementation:

The substitute exhibits a narrower maximum operating temperature range (-55°C to 105°C versus -55°C to 125°C). Applications requiring operation above 105°C require thermal analysis to confirm compatibility.

The AC voltage rating of the substitute (63V) is lower than the original (70V). AC applications must not exceed 63V to maintain rated performance.

Physical dimensions and lead spacing differ significantly. PCB layout modifications are required; the substitute's compact form factor (17.50mm x 5.00mm) may provide space advantages in constrained designs but requires footprint redesign.

The substitute's active product status ensures long-term availability and supply chain continuity compared to the obsolete PVC1039.

Frequently Asked Questions (FAQ)

Q: Can the BFC237321394 be used as a direct pin-for-pin replacement?

A: No. While both components are through-hole radial capacitors, lead spacing differs (34.10mm vs. 15.00mm). PCB layout modification is required. Physical dimensions also differ due to metallized film construction in the substitute.

Q: Are the electrical specifications identical?

A: Capacitance, tolerance, and DC voltage ratings are identical. The AC voltage rating is lower (63V vs. 70V). Operating temperature range is narrower (105°C maximum vs. 125°C maximum). Verify application requirements against these parameters.

Q: What is the significance of metallized film construction in the substitute?

A: Metallized polyester film provides equivalent electrical performance in this application while enabling more compact packaging. Both dielectric types are polyester-based and suitable for general-purpose applications.

Q: Are both components RoHS compliant?

A: Yes. Both PVC1039 and BFC237321394 are ROHS3 compliant with MSL rating 1 (unlimited moisture sensitivity level).

Q: What is the inventory status of these parts?

A: PVC1039 inventory is 967 pieces (obsolete status). BFC237321394 inventory is 955 pieces (active product status).

Q: Should I test the substitute before full production implementation?

A: Electrical specifications are matched. Verify PCB layout compatibility with the different lead spacing and physical dimensions. Confirm operating temperature and AC voltage requirements do not exceed substitute ratings.

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