CMR03C4R0DOCR Equivalent & Substitute Parts

Part Overview

The CMR03C4R0DOCR is a 4 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 300 V operation in radial through-hole configuration. This component is classified as Active product status and is suitable for general-purpose applications requiring stable capacitance values across wide temperature ranges. Mica capacitors of this specification are utilized in RF circuits, timing networks, and precision filtering applications where low capacitance values and tight tolerances are essential. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and access to alternative inventory sources while maintaining identical electrical and mechanical performance.

Substiute Parts

CMR03C4R0DOCR

Cornell Dubilier Electronics (CDE)In Stock: 1094CMR03C4R0DOCR Datasheet

Current PartRFQ

CD5CC040DO3F

Cornell Dubilier Electronics (CDE)In Stock: 1356CD5CC040DO3F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMR03C4R0DOCR are identified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters:

• Capacitance value: 4 pF (exact match required)
• Tolerance: ±0.5 pF (exact match required)
• Voltage rating: 300 V (minimum requirement; equal or higher acceptable)
• Dielectric material: Mica (required for performance characteristics)
• Operating temperature range: -55°C to 125°C (minimum requirement; equal or wider acceptable)

Mechanical Parameters:

• Mounting type: Through Hole (exact match required)
• Package configuration: Radial (exact match required)
• Lead spacing: 0.118" (3.00 mm) (exact match required for PCB compatibility)
• Physical dimensions: 0.272" L x 0.110" W (6.90 mm x 2.80 mm) (exact match required)
• Height seated maximum: 0.189" (4.80 mm) (exact match required)

Compliance Parameters:

• RoHS3 Compliant status (required for regulatory alignment)
• MSL rating: 1 (Unlimited) (required for storage and handling)

The substitute part CD5CC040DO3F meets all specified criteria and is therefore classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both the CMR03C4R0DOCR and CD5CC040DO3F are Active product status components manufactured by Cornell Dubilier Electronics. The substitute part CD5CC040DO3F demonstrates complete parametric equivalence across all electrical, mechanical, and compliance specifications.

Selection Basis:

The CD5CC040DO3F is suitable for direct substitution in applications currently specified for the CMR03C4R0DOCR. Both components share identical capacitance, tolerance, voltage rating, temperature operating range, physical dimensions, and lead spacing. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment in restricted substance environments.

The choice between CMR03C4R0DOCR and CD5CC040DO3F may be determined by inventory availability, lead time, or supply chain considerations, as no electrical or mechanical differentiation exists between the two parts.

Frequently Asked Questions (FAQ)

Q: Can CD5CC040DO3F be used as a direct replacement for CMR03C4R0DOCR?

A: Yes. The CD5CC040DO3F is a parametric equivalent with identical electrical specifications (4 pF, ±0.5 pF tolerance, 300 V rating), identical mechanical configuration (radial through-hole, 0.118" lead spacing, 6.90 mm x 2.80 mm dimensions), and identical compliance certifications (ROHS3, REACH unaffected). No circuit modifications or PCB layout changes are required.

Q: Are there any physical differences between these parts?

A: No. Both components share identical physical dimensions (0.272" L x 0.110" W, 6.90 mm x 2.80 mm), maximum seated height (0.189" / 4.80 mm), and lead spacing (0.118" / 3.00 mm). Both are radial through-hole packages suitable for identical PCB footprints.

Q: Do both parts operate across the same temperature range?

A: Yes. Both CMR03C4R0DOCR and CD5CC040DO3F operate across the identical temperature range of -55°C to 125°C, ensuring equivalent performance in thermal cycling and extreme environment applications.

Q: What is the tolerance specification for these capacitors?

A: Both parts carry a tolerance specification of ±0.5 pF. This tight tolerance is characteristic of mica dielectric capacitors and is suitable for precision RF and timing circuit applications.

Q: Are both parts RoHS compliant?

A: Yes. Both CMR03C4R0DOCR and CD5CC040DO3F are ROHS3 compliant and REACH unaffected, meeting regulatory requirements for restricted substance use in electronic equipment manufacturing.

Q: What is the moisture sensitivity level for these capacitors?

A: Both parts carry an MSL rating of 1 (Unlimited), indicating no moisture sensitivity restrictions. These components do not require special moisture control during storage, handling, or assembly.

Q: Can these parts be used in high-voltage applications?

A: Both components are rated for 300 V operation. Application suitability depends on specific circuit voltage requirements and safety margins. Ensure that the 300 V rating meets or exceeds the maximum voltage stress in the intended application.