CM05FD121GO3 Equivalent & Substitute Parts

Part Overview

The CM05FD121GO3 is a 120 pF mica capacitor rated for 500 V operation, manufactured by Cornell Dubilier Electronics (CDE). This through-hole radial component is designed for general-purpose applications requiring high voltage performance and stable capacitance characteristics across extended temperature ranges. The part is currently active in production with 902 units available in inventory.

Equivalent and substitute parts are identified to provide design flexibility, support supply chain continuity, and accommodate specific procurement or application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

CM05FD121GO3

Cornell Dubilier Electronics (CDE)In Stock: 944CM05FD121GO3 Datasheet

Current PartRFQ

CD15FD121GO3

Cornell Dubilier Electronics (CDE)In Stock: 1044CD15FD121GO3 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CM05FD121GO3 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 120 pF (exact match required)
• Tolerance: ±2% (exact match required)
• Voltage rating: 500 V (minimum requirement; higher ratings acceptable)
• Dielectric material: Mica (required for performance characteristics)

Mechanical Parameters:

• Mounting type: Through Hole (required for PCB compatibility)
• Package configuration: Radial (required for lead orientation and spacing)
• Lead spacing: 0.232" (5.90 mm) (required for footprint compatibility)
• Height seated (max): 0.370" (9.40 mm) (required for clearance compatibility)

Environmental Parameters:

• Operating temperature range: -55°C to 125°C (minimum requirement; wider ranges acceptable)

The substitute part CD15FD121GO3 meets all critical electrical, mechanical, and environmental parameters and is therefore classified as a parametric equivalent.

Parameter Comparison

Engineering Selection Recommendations

Both CM05FD121GO3 and CD15FD121GO3 are active production components manufactured by Cornell Dubilier Electronics and carry identical electrical, mechanical, and environmental specifications. Selection between these parts may be based on:

Inventory Availability: CM05FD121GO3 has 902 units in stock; CD15FD121GO3 has 990 units in stock.

Regulatory Compliance: Both parts are REACH Affected and carry EAR99 export classification. Both are RoHS non-compliant, indicating they contain materials restricted under RoHS directives.

Series Designation: CM05FD121GO3 belongs to the CM05 series; CD15FD121GO3 belongs to the CD15 series. Series designation reflects internal CDE product line organization and does not affect electrical or mechanical performance.

Moisture Sensitivity: CM05FD121GO3 carries MSL 1 (Unlimited); CD15FD121GO3 carries MSL Not Applicable. This difference does not impact substitution suitability for general-purpose applications.

Frequently Asked Questions (FAQ)

Q: Can CD15FD121GO3 be used as a direct replacement for CM05FD121GO3 in existing designs?

A: Yes. Both parts are parametric equivalents with identical 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 configuration (Radial), lead spacing (0.232" / 5.90 mm), and maximum seated height (0.370" / 9.40 mm). No PCB layout or schematic modifications are required.

Q: What is the difference between the CM05 and CD15 series designations?

A: Series designation reflects Cornell Dubilier Electronics internal product line organization. For the 120 pF, 500 V mica capacitor specifications, both series produce electrically and mechanically identical components. Series designation does not affect performance, compatibility, or application suitability.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts carry identical regulatory status: REACH Affected, EAR99 export classification, HTSUS code 8532.29.0020, and RoHS non-compliant status. No compliance differences exist between the two parts.

Q: What does MSL 1 (Unlimited) versus MSL Not Applicable mean for substitution?

A: Moisture Sensitivity Level (MSL) indicates the component's sensitivity to moisture during storage and handling. MSL 1 (Unlimited) indicates the component can be stored indefinitely without moisture control. MSL Not Applicable indicates the specification is not defined for that part. For general-purpose mica capacitor applications, this difference does not affect substitution suitability or performance.

Q: Can these parts be used in applications requiring higher voltage ratings?

A: No. Both parts are rated for 500 V operation. Use in applications exceeding 500 V is not supported. For higher voltage requirements, alternative components with higher voltage ratings must be selected.

Q: Are the physical dimensions identical between CM05FD121GO3 and CD15FD121GO3?

A: Yes. Both parts have identical dimensions: 0.461" L × 0.181" W (11.70 mm × 4.60 mm) body size, 0.232" (5.90 mm) lead spacing, and 0.370" (9.40 mm) maximum seated height. PCB footprints are interchangeable.