MC12FD680F-F Equivalent & Substitute Parts

Part Overview

The MC12FD680F-F is a 68 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE) in the 1210 (3225 Metric) surface mount package. This component is rated for 500 V and features ±1% tolerance with RF and high Q characteristics. The part is Active in production status and maintains ROHS3 compliance with MSL 1 rating, making it suitable for applications requiring stable capacitance across wide temperature ranges and demanding RF performance in harsh environments.

Alternative models become necessary when inventory constraints exist or when application requirements permit relaxed tolerance specifications while maintaining all other critical electrical and mechanical parameters.

Substiute Parts

MC12FD680F-F

Cornell Dubilier Electronics (CDE)In Stock: 1150MC12FD680F-F Datasheet

Current PartRFQ

MC12FD680J-F

Cornell Dubilier Electronics (CDE)In Stock: 7671MC12FD680J-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The MC12FD680J-F qualifies as a direct substitute based on the following allowed parameter equivalencies:

Matching Parameters:

• Capacitance: 68 pF (identical)
• Voltage - Rated: 500 V (identical)
• Dielectric Material: Mica (identical)
• Package / Case: 1210 (3225 Metric) (identical)
• Mounting Type: Surface Mount (identical)
• Operating Temperature: -55°C ~ 125°C (identical)
• Physical Dimensions: 0.126" L x 0.098" W; Height 0.079" max (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)

Differentiating Parameter:

• Tolerance: ±5% (compared to ±1% in MC12FD680F-F)

The tolerance variance is the only parameter difference. Applications tolerating ±5% capacitance variance while requiring all other electrical and mechanical specifications to remain constant may use the MC12FD680J-F.

Parameter Comparison

Engineering Selection Recommendations

Both the MC12FD680F-F and MC12FD680J-F are Active production parts from Cornell Dubilier Electronics and hold ROHS3 compliance certification. Selection between these parts depends on application tolerance requirements. The MC12FD680F-F provides ±1% tolerance specification for applications requiring tighter capacitance control. The MC12FD680J-F offers ±5% tolerance and maintains equivalent inventory availability. Both parts satisfy MSL 1 (Unlimited) rating, eliminating moisture sensitivity constraints in storage and handling. Either part is suitable for RF applications demanding high Q and low loss characteristics across the full -55°C to 125°C operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can the MC12FD680J-F be used as a direct replacement for the MC12FD680F-F? A: The MC12FD680J-F can be used as a substitute only when application circuit design permits ±5% capacitance tolerance. All other electrical parameters, mechanical dimensions, mounting configuration, and environmental ratings remain identical.

Q: What is the significance of the tolerance difference between these parts? A: The MC12FD680F-F offers ±1% tolerance, providing tighter capacitance control suitable for applications with strict resonant frequency or impedance matching requirements. The MC12FD680J-F with ±5% tolerance suits applications where capacitance variance does not impact circuit performance or where tolerance stack calculations permit wider ranges.

Q: Are the physical footprints identical? A: Yes. Both parts use the 1210 (3225 Metric) surface mount package with identical external dimensions of 0.126" L x 0.098" W and maximum seated height of 0.079". PCB layout and reflow profiles are interchangeable.

Q: Do both parts have the same temperature performance? A: Yes. Both the MC12FD680F-F and MC12FD680J-F operate across the -55°C to 125°C temperature range with mica dielectric characteristics identical across this span.

Q: What does MSL 1 (Unlimited) indicate? A: MSL 1 (Unlimited) rating indicates these components have unlimited shelf life and do not require desiccant storage or moisture bake-out procedures prior to reflow assembly, simplifying component handling and inventory management.

Q: Are there RoHS compliance differences? A: No. Both the MC12FD680F-F and MC12FD680J-F are ROHS3 Compliant, confirming lead-free construction and compliance with restricted substance directives.