CD15FD121GO3F Equivalent & Substitute Parts

Part Overview

The CD15FD121GO3F is a 120 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 500 V operation in a radial through-hole configuration. This component is classified as Active product status and is ROHS3 compliant. Mica capacitors of this specification are used in general-purpose applications requiring stable capacitance across temperature extremes and high voltage tolerance. Substitute parts are identified based on matching electrical characteristics and mechanical compatibility within the CD15 and CM05 series.

Key Parameters

Parameter	Value
Capacitance	120 pF
Tolerance	±2%
Voltage Rating	500 V
Dielectric Material	Mica
Operating Temperature Range	-55°C to 125°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.232" (5.90 mm)
Physical Dimensions	0.461" L x 0.181" W (11.70 mm x 4.60 mm)
Height - Seated (Max)	0.370" (9.40 mm)

Substitute Part Grouping Explanation

Substitution eligibility for the CD15FD121GO3F is determined by strict equivalence across the following parameters:

Capacitance Value: 120 pF (exact match required)
Tolerance: ±2% (exact match required)
Voltage Rating: 500 V (exact match required)
Dielectric Material: Mica (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)
Mounting Type: Through Hole (exact match required)
Package Configuration: Radial (exact match required)
Lead Spacing: 0.232" (5.90 mm) (exact match required)
Physical Dimensions: 0.461" L x 0.181" W (11.70 mm x 4.60 mm) (exact match required)

All identified substitute parts meet these electrical and mechanical criteria. Variations in compliance certifications (RoHS status, REACH status) and series designation do not affect functional substitutability in applications where the primary part specifications are the controlling factors.

Parameter Comparison

Parameter	CD15FD121GO3F	CD15FD121GO3	CM05FD121GO3
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)
Series	CD15	CD15	CM05
Capacitance	120 pF	120 pF	120 pF
Tolerance	±2%	±2%	±2%
Voltage Rating	500 V	500 V	500 V
Dielectric Material	Mica	Mica	Mica
Operating Temperature	-55°C to 125°C	-55°C to 125°C	-55°C to 125°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package Type	Radial	Radial	Radial
Lead Spacing	0.232" (5.90 mm)	0.232" (5.90 mm)	0.232" (5.90 mm)
Physical Dimensions	0.461" L x 0.181" W (11.70 mm x 4.60 mm)	0.461" L x 0.181" W (11.70 mm x 4.60 mm)	0.461" L x 0.181" W (11.70 mm x 4.60 mm)
Height - Seated (Max)	0.370" (9.40 mm)	0.370" (9.40 mm)	0.370" (9.40 mm)
Product Status	Active	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant
REACH Status	REACH Unaffected	REACH Affected	REACH Affected
Moisture Sensitivity Level (MSL)	Not Applicable	Not Applicable	1 (Unlimited)

Engineering Selection Recommendations

CD15FD121GO3F (Primary Part)

The CD15FD121GO3F is the preferred selection for applications requiring ROHS3 compliance and REACH unaffected status. This part is currently in active production with 865 units in stock.

CD15FD121GO3 (Parametric Equivalent)

The CD15FD121GO3 is electrically and mechanically identical to the primary part but carries RoHS non-compliant and REACH affected designations. This part is suitable for applications where regulatory compliance is not a constraint. Inventory availability is 990 units.

CM05FD121GO3 (Parametric Equivalent)

The CM05FD121GO3 is electrically and mechanically identical to the primary part but is designated as RoHS non-compliant and REACH affected. The MSL rating differs (1 - Unlimited versus Not Applicable), indicating different moisture handling requirements during storage and assembly. This part is suitable for applications where regulatory compliance is not a constraint. Inventory availability is 902 units.

Selection between substitute parts should be based on regulatory compliance requirements specific to the end application and supply chain constraints.

Frequently Asked Questions (FAQ)

Q: Can CD15FD121GO3 be used as a direct replacement for CD15FD121GO3F?

A: Yes. Both parts are electrically and mechanically identical with matching capacitance (120 pF), tolerance (±2%), voltage rating (500 V), operating temperature range (-55°C to 125°C), and physical dimensions. The primary difference is regulatory compliance status. CD15FD121GO3 is RoHS non-compliant and REACH affected, while CD15FD121GO3F is ROHS3 compliant and REACH unaffected.

Q: Can CM05FD121GO3 be used as a direct replacement for CD15FD121GO3F?

A: Yes. Both parts are electrically and mechanically identical with matching capacitance (120 pF), tolerance (±2%), voltage rating (500 V), operating temperature range (-55°C to 125°C), and physical dimensions. The primary differences are series designation (CM05 versus CD15) and regulatory compliance status. CM05FD121GO3 is RoHS non-compliant and REACH affected.

Q: What is the significance of the MSL rating difference between CD15FD121GO3F and CM05FD121GO3?

A: CD15FD121GO3F has MSL listed as Not Applicable, indicating the component does not absorb moisture during storage. CM05FD121GO3 has MSL 1 (Unlimited), indicating unlimited shelf life without moisture absorption concerns. This difference does not affect electrical performance but may influence storage and handling procedures.

Q: Are all three parts suitable for high-voltage applications?

A: Yes. All three parts are rated for 500 V operation and are suitable for high-voltage general-purpose applications within the specified operating temperature range of -55°C to 125°C.

Q: What is the lead spacing for these radial mica capacitors?

A: The lead spacing for all three parts is 0.232" (5.90 mm), ensuring identical PCB footprint compatibility.

Q: Do these parts require special handling during assembly?

A: Mica capacitors are not moisture-sensitive components. Standard through-hole soldering procedures apply. No special moisture-control measures are required during assembly.

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