CMR08F393FPDP Equivalent & Substitute Parts

Part Overview

The CMR08F393FPDP is a 0.039 µF mica capacitor rated for 500 V operation, manufactured by Cornell Dubilier Electronics (CDE). This through-hole radial component is designed for general-purpose applications requiring high voltage performance and stable capacitance characteristics across extended temperature ranges. The part maintains Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified to provide alternative sourcing options when primary inventory is unavailable or when procurement lead times require parallel component qualification.

Substiute Parts

CMR08F393FPDP

Cornell Dubilier Electronics (CDE)In Stock: 860CMR08F393FPDP Datasheet

Current PartRFQ

CMR08F393FPDR

Cornell Dubilier Electronics (CDE)In Stock: 1106CMR08F393FPDR Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMR08F393FPDP is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part CMR08F393FPDR qualifies as a parametric equivalent based on identical specifications in the following categories:

Electrical Parameters: Capacitance value (0.039 µF), tolerance (±1%), rated voltage (500 V), and dielectric material (mica) must match exactly.

Thermal Parameters: Operating temperature range (-55°C to 150°C) must be identical or exceed the primary part specification.

Mechanical Parameters: Mounting type (through hole), package configuration (radial), lead spacing (1.051" / 26.70 mm), and physical dimensions (1.449" L × 0.402" W / 36.80 mm × 10.20 mm) must be identical to ensure PCB compatibility without layout modification.

Compliance Parameters: RoHS3 compliance, MSL rating (1), and REACH unaffected status must be maintained.

Parameter Comparison

Engineering Selection Recommendations

Both CMR08F393FPDP and CMR08F393FPDR are Active products manufactured by Cornell Dubilier Electronics within the CMR mica capacitor series. Selection between these parts is based on inventory availability and procurement lead time requirements rather than technical differentiation.

CMR08F393FPDP is suitable for immediate deployment when 794 units of new original stock meet project quantity requirements.

CMR08F393FPDR provides an alternative sourcing path with 1,026 units of new original stock available, supporting higher volume requirements or extended procurement cycles.

Both parts maintain identical electrical performance, mechanical compatibility, and regulatory compliance (RoHS3, REACH unaffected). PCB layout, schematic designation, and assembly procedures require no modification when substituting between these parts. Selection should be based solely on inventory availability and supply chain logistics.

Frequently Asked Questions (FAQ)

Q: Can CMR08F393FPDR be used as a direct replacement for CMR08F393FPDP on existing PCBs?

A: Yes. Both parts are parametrically identical across all electrical, thermal, and mechanical specifications. No PCB layout modification, schematic change, or assembly procedure adjustment is required. The radial lead spacing (1.051" / 26.70 mm) and physical dimensions are identical, ensuring direct through-hole compatibility.

Q: What determines whether a part qualifies as a substitute for CMR08F393FPDP?

A: Substitution eligibility requires exact matching of capacitance (0.039 µF), tolerance (±1%), voltage rating (500 V), dielectric material (mica), operating temperature range (-55°C to 150°C), mounting type (through hole), package configuration (radial), lead spacing (1.051" / 26.70 mm), and physical dimensions (1.449" L × 0.402" W). Compliance certifications (RoHS3, REACH unaffected) and product status (Active) must also be maintained.

Q: Are there differences in performance between CMR08F393FPDP and CMR08F393FPDR?

A: No. Both parts are manufactured by Cornell Dubilier Electronics within the same CMR series with identical electrical characteristics, temperature stability, and voltage performance. The part number suffix difference reflects manufacturing or packaging variation only, with no impact on circuit performance or reliability.

Q: What is the significance of the lead spacing specification (1.051" / 26.70 mm)?

A: Lead spacing defines the distance between the two radial leads on the component. This measurement is critical for PCB hole pattern compatibility. Both substitute parts maintain identical lead spacing, ensuring they fit existing PCB designs without modification.

Q: Can these mica capacitors be used in high-temperature applications?

A: Yes. Both CMR08F393FPDP and CMR08F393FPDR are rated for continuous operation across -55°C to 150°C. Mica dielectric material provides stable capacitance performance throughout this temperature range, making these components suitable for high-temperature circuit environments.

Q: What does RoHS3 compliance indicate for these capacitors?

A: RoHS3 compliance confirms that both parts meet Restriction of Hazardous Substances Directive requirements, restricting lead, cadmium, mercury, hexavalent chromium, and specified brominated flame retardants. This certification is required for products sold into European markets and many other regulated regions.

Q: Is moisture sensitivity a concern for these mica capacitors?

A: No. Both parts carry MSL (Moisture Sensitivity Level) rating of 1, indicating unlimited shelf life and no moisture-related handling restrictions. Mica dielectric material is inherently moisture-resistant, eliminating the need for special storage or baking procedures.