MC12FD101F-TF Equivalent & Substitute Parts

Part Overview

The MC12FD101F-TF 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 in current production. 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.

Substitute parts may be required due to inventory constraints, lead time considerations, or application-specific tolerance requirements while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	100 pF	Must match exactly
Voltage Rating	500 V	Must match or exceed
Tolerance	±1%	Determines circuit precision requirements
Dielectric Material	Mica	Must match for RF performance
Package / Case	1210 (3225 Metric)	Must match for PCB layout compatibility
Mounting Type	Surface Mount	Must match for assembly process
Operating Temperature	-55°C to 125°C	Must support application environment
Features	RF, High Q, Low Loss	Required for RF circuit performance

Substitute Part Grouping Explanation

Substitution logic for the MC12FD101F-TF 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)

Allowable Variation Parameters:

Tolerance: ±1% to ±5% (wider tolerance acceptable for non-critical applications)

The substitute part MC12FD101J-F meets all mandatory match parameters. The tolerance specification differs at ±5% compared to the primary part's ±1%, which represents a relaxation of precision requirements. This substitution is valid for applications where the circuit design accommodates the wider tolerance band.

Parameter Comparison

Parameter	MC12FD101F-TF (Primary)	MC12FD101J-F (Substitute)	Compatibility
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Same manufacturer
Capacitance	100 pF	100 pF	Exact match
Tolerance	±1%	±5%	Substitute has wider tolerance
Voltage Rating	500 V	500 V	Exact match
Dielectric Material	Mica	Mica	Exact match
Operating Temperature	-55°C to 125°C	-55°C to 125°C	Exact match
Package / Case	1210 (3225 Metric)	1210 (3225 Metric)	Exact match
Mounting Type	Surface Mount	Surface Mount	Exact match
Size / Dimension	0.126" L x 0.098" W (3.20mm x 2.50mm)	0.126" L x 0.098" W (3.20mm x 2.50mm)	Exact match
Height - Seated (Max)	0.079" (2.00mm)	0.079" (2.00mm)	Exact match
Features	RF, High Q, Low Loss	RF, High Q, Low Loss	Exact match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Exact match
MSL Rating	1 (Unlimited)	1 (Unlimited)	Exact match
REACH Status	REACH Unaffected	REACH Unaffected	Exact match
Product Status	Active	Active	Both in production

Engineering Selection Recommendations

Primary Part Selection (MC12FD101F-TF): Select the MC12FD101F-TF when circuit design requires the ±1% tolerance specification. This part is Active in production with 691 pieces available in inventory. Full RoHS3 compliance and REACH Unaffected status confirm regulatory alignment for commercial and industrial applications.

Substitute Part Selection (MC12FD101J-F): The MC12FD101J-F is electrically and mechanically compatible as a substitute when application requirements permit ±5% tolerance. This part is Active in production with 2000 pieces available in inventory, providing superior availability. Both parts share identical voltage rating, package dimensions, operating temperature range, and RF performance characteristics. RoHS3 compliance and REACH Unaffected status are maintained.

Compliance Considerations: Both parts are ROHS3 Compliant and REACH Unaffected, confirming suitability for regulated markets. MSL Rating 1 (Unlimited) indicates no moisture sensitivity constraints during storage or handling.

Frequently Asked Questions (FAQ)

Q: Can MC12FD101J-F replace MC12FD101F-TF in all applications?

A: MC12FD101J-F is mechanically and electrically compatible with MC12FD101F-TF in applications where ±5% tolerance is acceptable. The substitute part maintains identical capacitance value, voltage rating, package dimensions, and operating temperature range. Circuit designs that depend on ±1% tolerance precision require the primary part.

Q: What is the difference between these two parts?

A: The primary difference is tolerance specification. MC12FD101F-TF is specified at ±1%, while MC12FD101J-F is specified at ±5%. All other electrical and mechanical parameters are identical, including 100 pF capacitance, 500 V voltage rating, 1210 package, and mica dielectric material.

Q: Are the physical dimensions identical?

A: Yes. Both parts are packaged in 1210 (3225 Metric) with dimensions of 0.126" L x 0.098" W (3.20mm x 2.50mm) and maximum seated height of 0.079" (2.00mm). PCB layout and assembly tooling are interchangeable.

Q: Do both parts meet RoHS and REACH requirements?

A: Yes. Both MC12FD101F-TF and MC12FD101J-F are ROHS3 Compliant and REACH Unaffected, confirming compliance with environmental regulations for commercial and industrial markets.

Q: What is the MSL rating for these capacitors?

A: Both parts carry MSL Rating 1 (Unlimited), indicating no moisture sensitivity. Standard storage and handling procedures apply without special moisture control requirements.

Q: Are both parts currently in production?

A: Yes. Both MC12FD101F-TF and MC12FD101J-F are classified as Active products in current production by Cornell Dubilier Electronics (CDE).

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