CD16FD121JO3F Equivalent & Substitute Parts

Part Overview

The CD16FD121JO3F is a 120 pF mica capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 500 V operation in radial through-hole configuration. This component is classified as Active product status and is ROHS3 compliant. Mica capacitors in this specification are utilized in RF applications, high-frequency circuits, and precision filtering where low loss and high Q characteristics are required. Substitute parts may be necessary due to inventory constraints, supply chain considerations, or specific compliance requirements for end-use applications.

Key Parameters

Parameter	Value
Capacitance	120 pF
Tolerance	±5%
Voltage Rating	500 V
Dielectric Material	Mica
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.234" (5.94 mm)
Operating Temperature Range	-55°C to 125°C
Series	CD16

Substitute Part Grouping Explanation

Substitution eligibility for the CD16FD121JO3F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Capacitance value: 120 pF
Tolerance: ±5%
Voltage rating: 500 V
Dielectric material: Mica
Mounting type: Through Hole
Package configuration: Radial
Lead spacing: 0.234" (5.94 mm)
Operating temperature range: -55°C to 125°C
Series designation: CD16

All substitute parts must maintain identical electrical and mechanical specifications within these parameters. Variations in compliance certifications (RoHS status, REACH status) do not affect functional substitutability but may impact application suitability based on end-use regulatory requirements.

Parameter Comparison

Parameter	CD16FD121JO3F (Main Part)	CD16FD121JO3 (Substitute)
Manufacturer	Cornell Dubilier Electronics (CDE)	Cornell Dubilier Electronics (CDE)
Series	CD16	CD16
Capacitance	120 pF	120 pF
Tolerance	±5%	±5%
Voltage Rating	500 V	500 V
Dielectric Material	Mica	Mica
Operating Temperature	-55°C to 125°C	-55°C to 125°C
Mounting Type	Through Hole	Through Hole
Package Type	Radial	Radial
Lead Spacing	0.234" (5.94 mm)	0.234" (5.94 mm)
Size / Dimension	0.429" L x 0.150" W (10.90 mm x 3.80 mm)	0.429" L x 0.150" W (10.90 mm x 3.80 mm)
Height - Seated (Max)	0.461" (11.70 mm)	0.461" (11.70 mm)
Product Status	Active	Active
RoHS Status	ROHS3 Compliant	RoHS non-compliant
REACH Status	REACH Unaffected	REACH Affected
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)
ECCN	EAR99	EAR99
HTSUS Code	8532.29.0020	8532.29.0020

Engineering Selection Recommendations

CD16FD121JO3F (Primary Selection): This part is recommended for applications requiring ROHS3 compliance and REACH unaffected status. The Active product status confirms ongoing manufacturer support and availability. This configuration is suitable for regulated industries and applications with strict environmental compliance mandates.

CD16FD121JO3 (Alternative Selection): This substitute part provides identical electrical and mechanical performance. However, it is classified as RoHS non-compliant and REACH Affected. Selection of this part is appropriate only for applications where RoHS3 and REACH compliance are not regulatory requirements. Both parts share the same CD16 series designation, capacitance value, voltage rating, and physical dimensions, ensuring direct functional interchangeability in circuit design.

The choice between these parts is determined by compliance requirements rather than electrical performance, as all critical parameters are equivalent.

Frequently Asked Questions (FAQ)

Q: Can CD16FD121JO3 be used as a direct replacement for CD16FD121JO3F?

A: Yes, from an electrical and mechanical standpoint. Both parts have identical capacitance (120 pF), tolerance (±5%), voltage rating (500 V), operating temperature range (-55°C to 125°C), and physical dimensions. However, compliance differences exist: CD16FD121JO3F is ROHS3 compliant and REACH unaffected, while CD16FD121JO3 is RoHS non-compliant and REACH affected. Selection depends on your application's regulatory requirements.

Q: What are the critical parameters that define substitutability for this mica capacitor?

A: Substitutability is strictly defined by: capacitance value (120 pF), tolerance (±5%), voltage rating (500 V), dielectric material (mica), mounting type (through hole), package configuration (radial), lead spacing (0.234" / 5.94 mm), and operating temperature range (-55°C to 125°C). Any deviation in these parameters disqualifies a part as a substitute.

Q: Are there any physical differences between CD16FD121JO3F and CD16FD121JO3?

A: No. Both parts share identical dimensions: 0.429" L x 0.150" W (10.90 mm x 3.80 mm) body size, 0.461" (11.70 mm) maximum seated height, and 0.234" (5.94 mm) lead spacing. They are mechanically interchangeable in PCB layouts.

Q: What does ROHS3 compliance mean for this capacitor?

A: ROHS3 compliance indicates the part meets Restriction of Hazardous Substances Directive requirements, restricting specific hazardous materials in electrical and electronic equipment. CD16FD121JO3F carries this certification; CD16FD121JO3 does not.

Q: What is the significance of REACH status for these parts?

A: REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) is a European Union regulation. CD16FD121JO3F is REACH unaffected, meaning it does not contain substances of very high concern (SVHC) requiring authorization. CD16FD121JO3 is REACH affected, indicating potential SVHC content requiring compliance verification for EU applications.

Q: Can these parts be used in high-frequency RF applications?

A: Yes. Both CD16FD121JO3F and CD16FD121JO3 are specified with RF, high Q, and low loss characteristics, making them suitable for RF filtering, impedance matching, and high-frequency coupling applications within the 500 V rating.

Q: What is the moisture sensitivity level (MSL) for these capacitors?

A: Both parts are rated MSL 1 (Unlimited), indicating they have unlimited shelf life and require no special moisture control during storage or handling.

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