CMR03F181JOAM Equivalent & Substitute Parts

Part Overview

The CMR03F181JOAM is a 180 pF mica capacitor rated at 100 V with radial through-hole mounting, manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active product status and is designed for general-purpose applications requiring stable capacitance and high reliability across extended temperature ranges. Mica capacitors in this specification are utilized in RF circuits, timing networks, and precision filtering applications where low loss and temperature stability are critical performance factors. 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

CMR03F181JOAM

Cornell Dubilier Electronics (CDE)In Stock: 887CMR03F181JOAM Datasheet

Current PartRFQ

CD5FA181JO3F

Cornell Dubilier Electronics (CDE)In Stock: 987CD5FA181JO3F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the CMR03F181JOAM are identified based on strict parametric equivalence across all critical electrical and mechanical specifications. The substitution logic is based on the following key parameters that must remain identical:

Electrical Parameters:

• Capacitance value: 180 pF (exact match required)
• Tolerance: ±5% (exact match required)
• Voltage rating: 100 V (exact match or higher acceptable)
• Dielectric material: Mica (exact match required)
• Operating temperature range: -55°C ~ 125°C (exact match or wider acceptable)

Mechanical Parameters:

• Mounting type: Through Hole (exact match required)
• Package configuration: Radial (exact match required)
• Lead spacing: 0.118" (3.00mm) (exact match required)
• Physical dimensions: 0.272" L x 0.181" W (6.90mm x 4.60mm) (exact match required)
• Maximum seated height: 0.240" (6.10mm) (exact match required)

Compliance Parameters:

• RoHS3 Compliant status (exact match required)
• Moisture Sensitivity Level 1 (exact match required)

Parts meeting all these criteria are classified as direct parametric equivalents and may be substituted without circuit redesign or PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

The CD5FA181JO3F is a direct parametric equivalent to the CMR03F181JOAM. Both components are manufactured by Cornell Dubilier Electronics and share identical electrical specifications, mechanical dimensions, and compliance certifications. Both parts maintain Active product status, ensuring continued availability and manufacturing support.

Selection between these two part numbers may be based on:

Inventory Availability: CMR03F181JOAM has 832 pieces in stock; CD5FA181JO3F has 891 pieces in stock. Either part may be selected based on supply chain requirements and lead time considerations.

Series Designation: CMR03F181JOAM belongs to the CMR series; CD5FA181JO3F belongs to the CD5 series. Both series are manufactured by the same supplier and meet identical performance criteria.

Compliance Certifications: Both parts are ROHS3 Compliant, REACH Unaffected, and classified under ECCN EAR99 and HTSUS 8532.29.0020. No compliance restrictions differentiate these components.

Application Compatibility: No circuit redesign, PCB layout modification, or performance re-qualification is required when substituting between these parts. Direct pin-for-pin and footprint-for-footprint replacement is supported.

Frequently Asked Questions (FAQ)

Q: Can CD5FA181JO3F be used as a direct replacement for CMR03F181JOAM in existing designs?

A: Yes. Both components are parametrically identical across all electrical and mechanical specifications. Direct substitution requires no circuit modifications, PCB layout changes, or performance re-testing.

Q: Are there any differences in the radial lead spacing between these two parts?

A: No. Both CMR03F181JOAM and CD5FA181JO3F feature identical lead spacing of 0.118" (3.00mm), ensuring compatibility with existing PCB footprints.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both components are ROHS3 Compliant, REACH Unaffected, and carry identical ECCN and HTSUS classifications. Moisture Sensitivity Level is 1 (Unlimited) for both parts, indicating no special handling requirements.

Q: What is the significance of the series designation difference (CMR vs. CD5)?

A: Series designation indicates the product line within Cornell Dubilier Electronics' mica capacitor portfolio. Both CMR and CD5 series meet identical performance specifications for this 180 pF, 100 V application. Series designation does not affect electrical performance or mechanical compatibility.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both parts share identical dimensions of 0.272" L x 0.181" W (6.90mm x 4.60mm) with a maximum seated height of 0.240" (6.10mm). PCB footprints and mounting hardware are fully compatible.

Q: Can either part be used in high-temperature applications?

A: Yes. Both CMR03F181JOAM and CD5FA181JO3F are rated for operating temperatures from -55°C to 125°C, supporting extended temperature range applications.

Q: Is there a performance difference between the two parts in RF or precision filtering circuits?

A: No. Both components utilize mica dielectric material with ±5% tolerance and identical voltage ratings. Electrical performance in RF circuits, timing networks, and precision filtering applications is equivalent.