MC12FD820F-F Equivalent & Substitute Parts

Part Overview

The MC12FD820F-F is an 82 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE) in the MC series. This surface mount component operates at 500 V rated voltage with ±1% tolerance and is designed for RF applications requiring high Q and low loss characteristics. The part is actively produced and stocked with 804 units available in new original condition. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part number becomes unavailable or when tolerance specifications permit relaxation.

Substiute Parts

MC12FD820F-F

Cornell Dubilier Electronics (CDE)In Stock: 826MC12FD820F-F Datasheet

Current PartRFQ

MC12FD820J-F

Cornell Dubilier Electronics (CDE)In Stock: 1199MC12FD820J-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MC12FD820F-F is determined by strict equivalence in the following parameters:

Critical Parameters (Must Match Exactly):

• Capacitance: 82 pF
• Voltage - Rated: 500 V
• Dielectric Material: Mica
• Package / Case: 1210 (3225 Metric)
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 125°C

Allowable Variation Parameter:

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

The MC12FD820J-F qualifies as a substitute part because it maintains identical capacitance, voltage rating, dielectric material, package, mounting type, and operating temperature range. The tolerance specification relaxes from ±1% to ±5%, which is an allowable substitution when circuit design permits wider capacitance variation. Both parts are manufactured by Cornell Dubilier Electronics in the MC series and share identical physical dimensions and environmental compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (MC12FD820F-F): Select the MC12FD820F-F when circuit design requires ±1% capacitance tolerance. This precision grade is suitable for RF applications with tight tuning specifications or frequency-critical networks. The part is actively manufactured, ROHS3 compliant, and REACH unaffected, meeting current regulatory requirements.

Substitute Part Selection (MC12FD820J-F): Select the MC12FD820J-F when circuit design permits ±5% capacitance tolerance and the primary part is unavailable. This substitute maintains all critical electrical and mechanical parameters, including voltage rating, dielectric material, operating temperature range, and package footprint. Both parts carry identical compliance certifications (ROHS3, REACH unaffected) and are produced by the same manufacturer in the same series. The MC12FD820J-F has higher inventory availability (1151 units) compared to the primary part (804 units).

Compliance Considerations: Both parts are ROHS3 compliant and REACH unaffected, ensuring compatibility with current environmental and regulatory standards. Moisture sensitivity level 1 (unlimited) indicates no special storage or handling requirements for either part.

Frequently Asked Questions (FAQ)

Q: Can MC12FD820J-F replace MC12FD820F-F in all applications?

A: The MC12FD820J-F can replace the MC12FD820F-F only when the circuit design tolerates ±5% capacitance variation. The substitute part maintains identical voltage rating, dielectric material, package, mounting type, and operating temperature range. Applications requiring ±1% tolerance precision must use the primary part number.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both the MC12FD820F-F and MC12FD820J-F share identical dimensions: 0.126" L x 0.098" W (3.20mm x 2.50mm) with a maximum seated height of 0.079" (2.00mm). They use the same 1210 (3225 Metric) package and are directly interchangeable from a PCB layout perspective.

Q: What is the difference between these two part numbers?

A: The primary difference is capacitance tolerance. The MC12FD820F-F specifies ±1% tolerance, while the MC12FD820J-F specifies ±5% tolerance. All other electrical and mechanical specifications are identical, including the 82 pF capacitance value and 500 V voltage rating.

Q: Are both parts suitable for RF applications?

A: Yes. Both the MC12FD820F-F and MC12FD820J-F are specified with RF, High Q, and Low Loss features. They are suitable for RF circuit applications within their respective tolerance specifications.

Q: Do these parts require special handling or storage?

A: No. Both parts have Moisture Sensitivity Level (MSL) 1, which indicates unlimited shelf life and no special moisture control requirements during storage or handling.

Q: Are there any regulatory compliance differences?

A: No. Both parts are ROHS3 compliant and REACH unaffected, meeting identical regulatory standards.