MC22FD122F-F Equivalent & Substitute Parts

Part Overview

The MC22FD122F-F is a 1200 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 500 V operation in a 2220 (5750 Metric) surface mount package. This component is classified as Active and remains in production. Mica capacitors of 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.

Substitute parts are identified when equivalent electrical performance can be maintained within the allowed parameter tolerances for the application, while maintaining identical mechanical compatibility and compliance certifications.

Substiute Parts

MC22FD122F-F

Cornell Dubilier Electronics (CDE)In Stock: 796MC22FD122F-F Datasheet

Current PartRFQ

MC22FD122J-F

Cornell Dubilier Electronics (CDE)In Stock: 1191MC22FD122J-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the MC22FD122F-F is based on the following criteria:

Identical Parameters (Non-Negotiable):

• Capacitance value: 1200 pF
• Voltage rating: 500 V
• Dielectric material: Mica
• Package / Case: 2220 (5750 Metric)
• Mounting type: Surface Mount
• Operating temperature range: -55°C to 125°C
• Physical dimensions: 0.224" L x 0.197" W (5.70mm x 5.00mm)
• Height - Seated (Max): 0.079" (2.00mm)
• RoHS compliance: ROHS3 Compliant
• MSL rating: 1 (Unlimited)

Variable Parameters (Allowed Variance):

• Tolerance: The main part specifies ±1%. Substitute parts with ±5% tolerance remain functionally equivalent when circuit design permits relaxed tolerance specifications.
• Packaging format: Bulk packaging is acceptable as an alternative to standard packaging when inventory and handling procedures accommodate this format.

The MC22FD122J-F meets all identical parameter requirements and is classified as a direct substitute with the only variance being tolerance specification (±5% versus ±1%).

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (MC22FD122F-F): Select the MC22FD122F-F when circuit specifications require ±1% tolerance precision. This part maintains the tightest tolerance specification and is suitable for applications where capacitance accuracy directly impacts circuit performance or tuning requirements.

Substitute Selection (MC22FD122J-F): The MC22FD122J-F is electrically and mechanically equivalent to the MC22FD122F-F with the exception of tolerance specification (±5% versus ±1%). This substitute is appropriate when:

• Circuit design permits ±5% capacitance tolerance without performance degradation
• Application does not require precision tuning or frequency-critical matching
• Inventory availability or lead time considerations favor the substitute part

Both parts maintain identical compliance certifications (ROHS3 Compliant, REACH Unaffected, EAR99 classification) and are manufactured by the same supplier using identical mica dielectric technology. Both are classified as Active products in current production.

Frequently Asked Questions (FAQ)

Q: Can MC22FD122J-F be used as a direct replacement for MC22FD122F-F in all applications?

A: The MC22FD122J-F is mechanically and electrically compatible with identical capacitance, voltage rating, package dimensions, and operating temperature range. The only difference is tolerance specification (±5% versus ±1%). Substitution is valid when circuit design tolerates ±5% capacitance variation. Applications requiring precision matching or tight frequency control should retain the ±1% specification.

Q: What is the significance of the tolerance difference between these parts?

A: The MC22FD122F-F specifies ±1% tolerance, meaning the actual capacitance will be within 12 pF of the nominal 1200 pF value (1188 pF to 1212 pF). The MC22FD122J-F specifies ±5% tolerance, resulting in a range of 1140 pF to 1260 pF. In RF and precision filter applications, this difference may affect circuit performance. In general-purpose applications, both specifications are functionally equivalent.

Q: Are the physical dimensions identical between these parts?

A: Yes. Both parts use the 2220 (5750 Metric) surface mount package with identical dimensions of 0.224" L x 0.197" W (5.70mm x 5.00mm) and maximum seated height of 0.079" (2.00mm). PCB footprints and assembly processes are identical.

Q: Do both parts meet the same compliance requirements?

A: Yes. Both MC22FD122F-F and MC22FD122J-F are ROHS3 Compliant, REACH Unaffected, and classified as EAR99 for export control purposes. Both carry MSL rating 1 (Unlimited moisture sensitivity level) and HTSUS code 8532.29.0020.

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, suitable for industrial and military applications requiring extended temperature performance.

Q: Are both parts currently in production?

A: Yes. Both MC22FD122F-F and MC22FD122J-F are classified as Active products in current production by Cornell Dubilier Electronics (CDE).