CMR08F393FPDM Equivalent & Substitute Parts

Part Overview

The CMR08F393FPDM is a 0.039 µF mica capacitor rated for 500 V operation, manufactured by Cornell Dubilier Electronics (CDE). This component is classified as a general-purpose through-hole radial capacitor designed for applications requiring high voltage stability and precision capacitance values. The part maintains Active product status and is ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications are maintained across alternative part numbers within the same manufacturer series.

Substiute Parts

CMR08F393FPDM

Cornell Dubilier Electronics (CDE)In Stock: 1011CMR08F393FPDM Datasheet

Current PartRFQ

CMR08F393FPDR

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMR08F393FPDM is determined by strict equivalence across the following parameters:

Electrical Parameters: Capacitance value (0.039 µF), tolerance (±1%), and voltage rating (500 V) must be identical. The mica dielectric material and operating temperature range (-55°C to 150°C) define the electrical performance envelope.

Mechanical Parameters: Through-hole radial mounting configuration, lead spacing (1.051" / 26.70 mm), and physical envelope dimensions (1.449" L × 0.402" W × 0.902" H maximum) must match to ensure PCB compatibility and assembly feasibility.

Compliance Parameters: RoHS3 compliance and MSL 1 rating must be maintained. REACH unaffected status and EAR99 ECCN classification apply uniformly across the CMR series.

Series Consistency: All substitute parts must belong to the Cornell Dubilier Electronics CMR mica capacitor series and maintain Active product status.

Parameter Comparison

Engineering Selection Recommendations

Both CMR08F393FPDM and CMR08F393FPDR are functionally equivalent components within the Cornell Dubilier Electronics CMR mica capacitor series. Selection between these parts may be based on inventory availability and supply chain considerations.

CMR08F393FPDM: 918 units in stock. Active product status with full ROHS3 compliance and unlimited moisture sensitivity rating.

CMR08F393FPDR: 1026 units in stock. Active product status with identical electrical, mechanical, and compliance specifications.

Both parts satisfy identical application requirements for 0.039 µF, 500 V mica capacitor circuits. Component selection should be determined by procurement lead time, inventory position, and supply chain logistics rather than technical performance differentiation.

Frequently Asked Questions (FAQ)

Q: Can CMR08F393FPDR be used as a direct replacement for CMR08F393FPDM?

A: Yes. Both parts are parametrically equivalent across all electrical specifications (0.039 µF, ±1% tolerance, 500 V rating), mechanical dimensions (1.051" lead spacing, 1.449" × 0.402" × 0.902" envelope), and compliance certifications (ROHS3, MSL 1, REACH unaffected). Direct PCB substitution is supported without design modification.

Q: Are there differences in the part numbers that affect compatibility?

A: The part numbers CMR08F393FPDM and CMR08F393FPDR differ only in the final suffix characters (DM vs. DR). Both designations reference identical CMR series mica capacitors with matching electrical and mechanical specifications. The suffix variation does not indicate functional or performance differences.

Q: What is the significance of the lead spacing specification?

A: Lead spacing of 1.051" (26.70 mm) defines the PCB hole pattern and component footprint. Both substitute parts maintain identical lead spacing, ensuring compatibility with existing PCB layouts designed for either part number without requiring footprint modification.

Q: Does the ±1% tolerance apply to both parts?

A: Yes. Both CMR08F393FPDM and CMR08F393FPDR maintain ±1% capacitance tolerance, ensuring equivalent precision and performance in applications requiring tight capacitance control.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both parts operate across the -55°C to 150°C temperature range, supporting applications requiring extended thermal performance. The mica dielectric material provides stable capacitance across this operating envelope.

Q: What is the MSL 1 rating significance?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture-related degradation. Both parts do not require special moisture control during storage or handling, simplifying logistics and inventory management.