CD15FD391FO3 Equivalent & Substitute Parts

Part Overview

The CD15FD391FO3 is a 390 pF mica capacitor rated for 500 V with ±1% tolerance, manufactured by Cornell Dubilier Electronics (CDE). This through-hole radial component operates across a temperature range of -55°C to 125°C and is classified as a general-purpose capacitor. The part is currently active in production with 932 units in stock. Identifying equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate varying compliance requirements across different applications and regions.

Key Parameters

Parameter	Value
Capacitance	390 pF
Tolerance	±1%
Voltage Rating	500 V
Dielectric Material	Mica
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.232" (5.90 mm)
Physical Dimensions	0.469" L x 0.209" W (11.90 mm x 5.30 mm)
Height - Seated (Max)	0.390" (9.90 mm)

Substitute Part Grouping Explanation

Substitution of the CD15FD391FO3 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical capacitance (390 pF), tolerance (±1%), voltage rating (500 V), dielectric material (mica), operating temperature range (-55°C to 125°C), mounting type (through hole), package configuration (radial), lead spacing (0.232" / 5.90 mm), and physical dimensions (0.469" L x 0.209" W / 11.90 mm x 5.30 mm). The CD15FD391FO3F meets all these requirements and is classified as a parametric equivalent. Differences in RoHS compliance status and REACH classification do not affect electrical or mechanical substitutability but may influence suitability for specific regulatory environments.

Parameter Comparison

Parameter	CD15FD391FO3	CD15FD391FO3F	Match Status
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Identical
Series	CD15	CD15	Identical
Capacitance	390 pF	390 pF	Identical
Tolerance	±1%	±1%	Identical
Voltage Rating	500 V	500 V	Identical
Dielectric Material	Mica	Mica	Identical
Operating Temperature	-55°C to 125°C	-55°C to 125°C	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package Type	Radial	Radial	Identical
Lead Spacing	0.232" (5.90 mm)	0.232" (5.90 mm)	Identical
Physical Dimensions	0.469" L x 0.209" W (11.90 mm x 5.30 mm)	0.469" L x 0.209" W (11.90 mm x 5.30 mm)	Identical
Height - Seated (Max)	0.390" (9.90 mm)	0.390" (9.90 mm)	Identical
Product Status	Active	Active	Identical
RoHS Status	RoHS non-compliant	ROHS3 Compliant	Different
REACH Status	REACH Affected	REACH Unaffected	Different
Inventory	932 Pcs	801 Pcs	Different

Engineering Selection Recommendations

The CD15FD391FO3F serves as a direct parametric equivalent to the CD15FD391FO3 for all electrical and mechanical applications. Both parts are manufactured by Cornell Dubilier Electronics within the CD15 series and deliver identical performance across capacitance, voltage rating, tolerance, temperature range, and physical form factor.

Selection between these two parts should be based on regulatory compliance requirements:

The CD15FD391FO3 is suitable for applications where RoHS non-compliance is acceptable and REACH-affected status does not present a constraint. This part maintains full availability with 932 units in current inventory.

The CD15FD391FO3F is required for applications subject to ROHS3 compliance mandates or where REACH-unaffected status is specified. This variant is available with 801 units in inventory and provides enhanced regulatory alignment for markets with strict environmental compliance standards.

Both parts are active products with no end-of-life status and are suitable for new designs and production applications.

Frequently Asked Questions (FAQ)

Q: Can CD15FD391FO3F be used as a direct replacement for CD15FD391FO3 in existing designs?

A: Yes. The CD15FD391FO3F is a parametric equivalent with identical electrical specifications (390 pF, ±1%, 500 V), dielectric material (mica), operating temperature range (-55°C to 125°C), and mechanical form factor (radial, through-hole, 0.232" lead spacing). No circuit modifications or PCB layout changes are required for substitution.

Q: What is the difference between these two part numbers?

A: The primary differences are regulatory compliance classifications. The CD15FD391FO3F is ROHS3 compliant and REACH unaffected, while the CD15FD391FO3 is RoHS non-compliant and REACH affected. All electrical and mechanical parameters are identical.

Q: Which part should I specify for a new design?

A: Specify CD15FD391FO3F if your application or market requires ROHS3 compliance or REACH-unaffected status. Specify CD15FD391FO3 if regulatory compliance is not a constraint and cost optimization is the primary consideration. Both parts are active and available.

Q: Are the physical dimensions and lead spacing identical?

A: Yes. Both parts share identical dimensions (0.469" L x 0.209" W / 11.90 mm x 5.30 mm), maximum seated height (0.390" / 9.90 mm), and lead spacing (0.232" / 5.90 mm). PCB footprints and mechanical clearances are interchangeable.

Q: Can I mix these parts in the same production batch?

A: Yes. Both parts are electrically and mechanically identical and can be used interchangeably within the same assembly. However, if regulatory documentation requires consistent compliance status across all components, maintain separate part specifications for traceability.

Q: What is the operating temperature range for both parts?

A: Both CD15FD391FO3 and CD15FD391FO3F operate across -55°C to 125°C. Temperature performance is identical between the two variants.

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