MC18FD181F-F Equivalent & Substitute Parts

Part Overview

The MC18FD181F-F is a 180 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 500 V operation in a 1812 (4532 Metric) surface mount package. This component is classified as an active product with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Mica capacitors in this specification are utilized in RF applications requiring high Q factor and low loss characteristics across the operating temperature range of -55°C to 125°C. Alternative models may be required due to inventory constraints, tolerance requirements, or specific application demands.

Substiute Parts

MC18FD181F-F

Cornell Dubilier Electronics (CDE)In Stock: 834MC18FD181F-F Datasheet

Current PartRFQ

MC18FD181J-F

Cornell Dubilier Electronics (CDE)In Stock: 2710MC18FD181J-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MC18FD181F-F is determined by the following critical parameters:

Mandatory Matching Parameters:

• Capacitance value: 180 pF
• Voltage rating: 500 V minimum
• Dielectric material: Mica
• Package type: 1812 (4532 Metric)
• Mounting type: Surface Mount
• Physical dimensions: 4.50mm L × 3.20mm W × 2.00mm H (Max)
• Operating temperature range: -55°C to 125°C
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

Allowable Variation Parameter:

• Tolerance: ±1% (primary specification) to ±5% (substitute specification)

The MC18FD181J-F qualifies as a direct substitute based on identical capacitance, voltage rating, package dimensions, temperature range, and compliance certifications. The tolerance specification differs at ±5% versus ±1%, which represents a relaxation of the tolerance requirement and is permissible in applications where the tighter tolerance of the primary part is not mandatory.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (MC18FD181F-F): Select the MC18FD181F-F when circuit design specifications require a capacitance tolerance of ±1%. This part maintains active product status with full ROHS3 compliance and unlimited moisture sensitivity rating, ensuring compatibility with modern manufacturing and environmental standards.

Substitute Part Selection (MC18FD181J-F): The MC18FD181J-F is electrically and mechanically interchangeable with the MC18FD181F-F in applications where a ±5% tolerance specification is acceptable. Both parts share identical voltage ratings, package dimensions, temperature operating range, and compliance certifications. Selection of the substitute part is appropriate when the primary part is unavailable or when application requirements permit the relaxed tolerance specification. The substitute maintains active product status and full regulatory compliance.

Compliance Considerations: Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with HTSUS code 8532.29.0020. No additional compliance verification is required for substitution.

Frequently Asked Questions (FAQ)

Q: Can MC18FD181J-F replace MC18FD181F-F in all applications?

A: The MC18FD181J-F is a direct substitute in applications where the circuit design tolerance specification permits ±5% capacitance variation. If the design requires ±1% tolerance, the primary part MC18FD181F-F must be used. Both parts are electrically and mechanically identical in all other parameters.

Q: What is the difference between these two parts?

A: The sole difference is the capacitance tolerance specification. MC18FD181F-F specifies ±1% tolerance, while MC18FD181J-F specifies ±5% tolerance. All other electrical characteristics, physical dimensions, voltage rating, temperature range, and compliance certifications are identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts use the 1812 (4532 Metric) surface mount package with identical dimensions of 4.50mm length, 3.20mm width, and 2.00mm maximum seated height. PCB footprints and assembly processes are interchangeable.

Q: Do both parts meet RoHS requirements?

A: Yes. Both MC18FD181F-F and MC18FD181J-F are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: What is the operating temperature range for both parts?

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

Q: Are there inventory differences between these parts?

A: Yes. MC18FD181F-F has 762 pieces in stock, while MC18FD181J-F has 2603 pieces in stock. Availability may influence part selection when immediate delivery is required.