CMR03C3R0DOCR Equivalent & Substitute Parts

Part Overview

The CMR03C3R0DOCR is a 3 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE) with a rated voltage of 300 V and radial through-hole mounting. This component is classified as Active product status and is ROHS3 compliant. Substitute parts are identified when equivalent electrical and mechanical parameters are maintained across the same dielectric material, capacitance value, voltage rating, and physical form factor. Alternative models may be required due to inventory availability, regional compliance requirements, or manufacturing discontinuation of specific series variants.

Substiute Parts

CMR03C3R0DOCR

Cornell Dubilier Electronics (CDE)In Stock: 1179CMR03C3R0DOCR Datasheet

Current PartRFQ

CD5CC030DO3

Cornell Dubilier Electronics (CDE)In Stock: 1076CD5CC030DO3 Datasheet

Parametric EquivalentRFQ

CD5CC030DO3F

Cornell Dubilier Electronics (CDE)In Stock: 1186CD5CC030DO3F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CMR03C3R0DOCR is determined by strict equivalence across the following critical parameters:

Electrical Parameters: Capacitance value (3 pF), tolerance (±0.5 pF), and rated voltage (300 V) must be identical. Dielectric material must remain mica to preserve frequency response and temperature stability characteristics.

Mechanical Parameters: Mounting type (through hole), package configuration (radial), lead spacing (0.118" / 3.00 mm), physical dimensions (0.272" L x 0.110" W / 6.90 mm x 2.80 mm), and seated height (0.189" / 4.80 mm) must match to ensure PCB compatibility and assembly feasibility.

Environmental Parameters: Operating temperature range (-55°C to 125°C) and moisture sensitivity level (MSL 1) must be maintained.

The identified substitute parts CD5CC030DO3F and CD5CC030DO3 satisfy all electrical and mechanical equivalence criteria. Differentiation between substitutes is based on product compliance status and regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: CD5CC030DO3F

The CD5CC030DO3F is the preferred substitute for the CMR03C3R0DOCR. Both parts maintain identical electrical and mechanical specifications. The CD5CC030DO3F carries ROHS3 compliance and REACH Unaffected status, matching the regulatory posture of the original part. This alignment ensures compatibility with supply chain requirements and end-product certifications without modification to design documentation or procurement specifications.

Secondary Selection: CD5CC030DO3

The CD5CC030DO3 provides electrical and mechanical equivalence but differs in regulatory compliance. This part is RoHS non-compliant and REACH Affected. Selection of this substitute is appropriate only when regulatory requirements do not mandate ROHS3 compliance or when REACH-affected status is acceptable within the application context. Use of this part may require design documentation updates and compliance verification.

Inventory Availability

Current stock levels: CMR03C3R0DOCR (1081 pcs), CD5CC030DO3F (1100 pcs), CD5CC030DO3 (1032 pcs). All parts are available as new original components in bulk packaging.

Frequently Asked Questions (FAQ)

Q: Can CD5CC030DO3F and CD5CC030DO3 be used interchangeably with CMR03C3R0DOCR?

A: Both substitute parts are electrically and mechanically equivalent to the CMR03C3R0DOCR. They share identical capacitance (3 pF), tolerance (±0.5 pF), voltage rating (300 V), dielectric material (mica), mounting configuration (radial through-hole), lead spacing (0.118" / 3.00 mm), and physical dimensions. Interchangeability is confirmed for these parameters. Regulatory compliance differences must be evaluated based on application requirements.

Q: What is the difference between CD5CC030DO3F and CD5CC030DO3?

A: The primary differences are regulatory certifications. CD5CC030DO3F is ROHS3 compliant and REACH Unaffected. CD5CC030DO3 is RoHS non-compliant and REACH Affected. All electrical and mechanical parameters are identical between these two parts.

Q: Does the series designation (CMR vs. CD5) affect substitution?

A: Series designation reflects manufacturer product line organization but does not alter electrical or mechanical performance when all specified parameters are equivalent. The CMR and CD5 series both contain mica capacitors with identical ratings and physical form factors for this 3 pF, 300 V application.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. All three parts share identical lead spacing (0.118" / 3.00 mm), physical dimensions (0.272" L x 0.110" W / 6.90 mm x 2.80 mm), and seated height (0.189" / 4.80 mm). PCB footprints and assembly procedures remain unchanged.

Q: What is the operating temperature range for these capacitors?

A: All three parts operate across -55°C to 125°C. This range is maintained across the main part and all substitutes.

Q: Are these parts moisture sensitive?

A: All three parts carry Moisture Sensitivity Level (MSL) 1, indicating unlimited shelf life without moisture control requirements. Standard storage conditions are acceptable.