CDV16FF121JO3 Equivalent & Substitute Parts

Part Overview

The CDV16FF121JO3 is a 120 pF mica capacitor rated for 1 kV, manufactured by Cornell Dubilier Electronics (CDE) in the CDV16 series. This through-hole radial component is designed for RF applications requiring high Q and low loss characteristics. The part is currently active in production with 867 units in stock.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when supply chain constraints occur, or when design requirements permit selection from qualified alternatives within the same electrical and mechanical specifications.

Key Parameters

Parameter	Value
Capacitance	120 pF
Tolerance	±5%
Voltage Rating	1 kV
Dielectric Material	Mica
Mounting Type	Through Hole
Package Type	Radial
Operating Temperature Range	-55°C to 150°C
Lead Spacing	0.234" (5.94 mm)
Features	RF, High Q, Low Loss

Substitute Part Grouping Explanation

Substitution of the CDV16FF121JO3 is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Non-negotiable):

Capacitance value: 120 pF
Tolerance: ±5%
Voltage rating: 1 kV
Dielectric material: Mica

Mechanical Parameters (Non-negotiable):

Mounting type: Through Hole
Package configuration: Radial
Lead spacing: Within acceptable PCB layout tolerance
Physical dimensions: Compatible with board footprint

Environmental Parameters:

Operating temperature range: -55°C to 150°C
Moisture sensitivity level: 1 (Unlimited)

The CDV16FF121JO3F qualifies as a direct substitute because it maintains identical electrical specifications, dielectric material, mounting configuration, and operating temperature range. Minor variations in lead spacing (0.232" vs. 0.234") fall within standard manufacturing tolerances and do not affect PCB compatibility.

Parameter Comparison

Parameter	CDV16FF121JO3	CDV16FF121JO3F	Match Status
Capacitance	120 pF	120 pF	Identical
Tolerance	±5%	±5%	Identical
Voltage Rating	1 kV	1 kV	Identical
Dielectric Material	Mica	Mica	Identical
Mounting Type	Through Hole	Through Hole	Identical
Package Type	Radial	Radial	Identical
Operating Temperature	-55°C to 150°C	-55°C to 150°C	Identical
Lead Spacing	0.234" (5.94 mm)	0.232" (5.90 mm)	Within tolerance
Physical Dimensions	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)	Identical
Height (Seated Max)	0.461" (11.70 mm)	0.461" (11.70 mm)	Identical
Features	RF, High Q, Low Loss	RF, High Q, Low Loss	Identical
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Identical
Series	CDV16	CDV16	Identical
Product Status	Active	Active	Identical

Engineering Selection Recommendations

CDV16FF121JO3F as Primary Substitute:

The CDV16FF121JO3F is a direct electrical and mechanical equivalent to the CDV16FF121JO3. Both parts are active products from Cornell Dubilier Electronics within the CDV16 series. The CDV16FF121JO3F offers superior compliance status: it is RoHS3 compliant and REACH unaffected, compared to the original part which is RoHS non-compliant and REACH affected.

Selection between these two parts should be based on regulatory and compliance requirements of the end application:

Use CDV16FF121JO3F when RoHS3 compliance is required or when REACH compliance is a design constraint.
Use CDV16FF121JO3 when legacy compliance status is acceptable and inventory availability is the primary concern (867 units in stock vs. 2482 units for the substitute).

Both parts maintain identical electrical performance, operating temperature range, and RF characteristics. The 0.002" (0.04 mm) difference in lead spacing is within standard manufacturing tolerances and does not affect PCB footprint compatibility.

Frequently Asked Questions (FAQ)

Q: Can CDV16FF121JO3F be used as a direct replacement for CDV16FF121JO3 in existing designs?

A: Yes. The CDV16FF121JO3F is electrically and mechanically equivalent. Both parts have identical capacitance (120 pF), tolerance (±5%), voltage rating (1 kV), dielectric material (mica), mounting type (through hole), package configuration (radial), and operating temperature range (-55°C to 150°C). Lead spacing differs by 0.002" (0.04 mm), which is within standard manufacturing tolerance and does not affect PCB compatibility.

Q: What is the difference in compliance status between these two parts?

A: The CDV16FF121JO3 is RoHS non-compliant and REACH affected. The CDV16FF121JO3F is RoHS3 compliant and REACH unaffected. If your application requires RoHS3 certification or REACH compliance, the CDV16FF121JO3F must be selected.

Q: Are there any performance differences between CDV16FF121JO3 and CDV16FF121JO3F?

A: No. Both parts share identical RF characteristics, high Q factor, and low loss performance. They are manufactured from the same mica dielectric material and operate across the same temperature range (-55°C to 150°C).

Q: What is the lead spacing tolerance, and does the 0.002" difference matter?

A: The lead spacing difference (0.234" vs. 0.232") represents a 0.04 mm variation, which is within standard radial capacitor manufacturing tolerances. This difference does not affect PCB footprint compatibility or board assembly.

Q: Which part should I select if both are available?

A: Selection depends on compliance requirements. If RoHS3 or REACH compliance is mandatory, select CDV16FF121JO3F. If compliance status is not a constraint and inventory availability is the priority, either part is acceptable. The CDV16FF121JO3F has higher inventory availability (2482 units vs. 867 units).

Q: Are both parts still in active production?

A: Yes. Both CDV16FF121JO3 and CDV16FF121JO3F are listed as active products from Cornell Dubilier Electronics.

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