CMR03C4R0DOCP Equivalent & Substitute Parts

Part Overview

The CMR03C4R0DOCP 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 with 897 units currently in stock. Mica capacitors in this specification range are utilized in precision RF circuits, timing networks, and high-reliability applications requiring stable capacitance over temperature extremes. Identifying equivalent substitute parts ensures design flexibility, supply chain continuity, and access to alternative inventory sources while maintaining electrical and mechanical compatibility.

Substiute Parts

CMR03C4R0DOCP

Cornell Dubilier Electronics (CDE)In Stock: 919CMR03C4R0DOCP Datasheet

Current PartRFQ

CD5CC040DO3F

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

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMR03C4R0DOCP is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 4 pF (exact match required)
• Tolerance: ±0.5 pF (exact match required)
• Voltage rating: 300 V (minimum requirement; higher ratings acceptable)
• Dielectric material: Mica (required for performance characteristics)

Mechanical Parameters:

• Mounting type: Through Hole (required for PCB compatibility)
• Package configuration: Radial (required for lead orientation and footprint)
• Lead spacing: 0.118" / 3.00 mm (required for board layout compatibility)

Environmental & Compliance Parameters:

• Operating temperature range: -55°C to 125°C (minimum requirement)
• RoHS3 compliance status (required for regulatory alignment)

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

Parameter Comparison

Engineering Selection Recommendations

Both the CMR03C4R0DOCP 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 environmental specifications. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for modern electronics manufacturing.

Selection between these parts may be based on inventory availability and supply chain considerations. The CD5CC040DO3F currently maintains higher inventory levels (1252 units versus 897 units), which may provide supply chain advantages for high-volume production requirements. Both parts are suitable for direct substitution in applications requiring 4 pF mica capacitors at 300 V with radial through-hole mounting.

Frequently Asked Questions (FAQ)

Q: Can CD5CC040DO3F be used as a direct replacement for CMR03C4R0DOCP?

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), and identical environmental operating range (-55°C to 125°C). Both components are ROHS3 compliant and manufactured by Cornell Dubilier Electronics.

Q: Are there any differences in physical dimensions 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) with maximum seated height of 0.189" (4.80 mm). Lead spacing is identical at 0.118" (3.00 mm), ensuring compatibility with existing PCB layouts.

Q: What determines substitution eligibility for mica capacitors in this category?

A: Substitution eligibility is determined by exact matching of capacitance value, tolerance, voltage rating, dielectric material (mica), operating temperature range, mounting type (through-hole), package configuration (radial), and lead spacing. All these parameters must align for direct substitution without circuit redesign.

Q: Do both parts meet the same compliance standards?

A: Yes. Both CMR03C4R0DOCP and CD5CC040DO3F are ROHS3 compliant, REACH unaffected, and classified as Active product status. Both carry identical moisture sensitivity level (MSL 1 - Unlimited) and ECCN/HTSUS classifications.

Q: Which part should be selected for new designs?

A: Either part is suitable for new designs. Selection may be based on current inventory availability, supplier lead times, or established vendor relationships. The CD5CC040DO3F currently maintains higher inventory stock (1252 units), which may provide supply chain advantages.