MC12FD101G-F Equivalent & Substitute Parts

Part Overview

The MC12FD101G-F is a 100 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 500 V operation in a 1210 (3225 Metric) surface mount package. This component is classified as Active and is ROHS3 compliant. Mica capacitors in this specification are used 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.

Substiute Parts

MC12FD101G-F

Cornell Dubilier Electronics (CDE)In Stock: 1098MC12FD101G-F Datasheet

Current PartRFQ

MC12FD101J-F

Cornell Dubilier Electronics (CDE)In Stock: 2011MC12FD101J-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the MC12FD101G-F is based on the following criteria:

Mandatory Match Parameters:

• Capacitance: 100 pF (exact match required)
• Voltage Rating: 500 V (exact match required)
• Dielectric Material: Mica (exact match required)
• Package / Case: 1210 (3225 Metric) (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Operating Temperature Range: -55°C to 125°C (exact match required)
• Features: RF, High Q, Low Loss (exact match required)

Allowable Variation Parameters:

• Tolerance: ±2% to ±5% (wider tolerance acceptable for substitution)

The MC12FD101J-F qualifies as a substitute because it maintains all mandatory parameters while permitting a tolerance specification of ±5%, which is wider than the original ±2% specification. This substitution is valid when circuit design tolerances accommodate the broader capacitance deviation range.

Parameter Comparison

Engineering Selection Recommendations

MC12FD101G-F (Primary Specification): Use this part when circuit design requires the tighter ±2% tolerance specification. This part is Active status and ROHS3 compliant. Current inventory is 989 pieces.

MC12FD101J-F (Substitute): Use this part when circuit design tolerances permit the ±5% tolerance specification. This part is Active status and ROHS3 compliant. Current inventory is 2000 pieces. The substitute is suitable for applications where capacitance deviation within ±5% does not impact circuit performance or tuning requirements.

Both parts maintain identical compliance certifications (ROHS3, REACH Unaffected, EAR99 classification) and identical electrical performance characteristics for RF applications. Selection between these parts depends solely on the tolerance requirement of the specific circuit design.

Frequently Asked Questions (FAQ)

Q: Can MC12FD101J-F replace MC12FD101G-F in all applications?

A: MC12FD101J-F can replace MC12FD101G-F only in applications where the circuit design accommodates a capacitance tolerance of ±5%. If the circuit requires the tighter ±2% tolerance, substitution is not appropriate.

Q: What is the difference between these two parts?

A: The only difference is the tolerance specification. MC12FD101G-F has ±2% tolerance, while MC12FD101J-F has ±5% tolerance. All other electrical and mechanical parameters are identical.

Q: Are both parts the same physical size?

A: Yes. Both parts use the 1210 (3225 Metric) package with identical dimensions of 0.126" L x 0.098" W (3.20mm x 2.50mm) and maximum seated height of 0.079" (2.00mm). They are mechanically interchangeable on the PCB.

Q: Do both parts have the same temperature operating range?

A: Yes. Both parts operate across the identical temperature range of -55°C to 125°C.

Q: Are both parts RoHS compliant?

A: Yes. Both MC12FD101G-F and MC12FD101J-F are ROHS3 compliant and REACH unaffected.

Q: What does the tolerance specification mean for circuit performance?

A: Tolerance specifies the allowable deviation of the actual capacitance value from the nominal 100 pF specification. MC12FD101G-F can deviate by ±2% (98 pF to 102 pF), while MC12FD101J-F can deviate by ±5% (95 pF to 105 pF). Applications sensitive to capacitance value require the tighter tolerance.