CD17CD090DO3 Mica Capacitor Equivalent & Substitute Parts

Part Overview

The CD17CD090DO3 is a 9 pF mica capacitor rated for 500 V with radial through-hole mounting, manufactured by Cornell Dubilier Electronics (CDE). This component is currently active in production. Mica capacitors in this specification are essential in RF applications requiring high Q factor and low loss characteristics. Identifying qualified substitutes ensures design flexibility and supply chain continuity when the primary part becomes unavailable.

Key Parameters

Parameter	Value
Capacitance	9 pF
Tolerance	±0.5 pF
Voltage Rating	500 V
Dielectric Material	Mica
Operating Temperature Range	-55°C to 150°C
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.232" (5.90 mm)
Physical Dimensions	0.449" L × 0.169" W (11.40 mm × 4.30 mm)
Maximum Seated Height	0.358" (9.10 mm)

Substitute Part Grouping Explanation

Substitutes for the CD17CD090DO3 are determined by equivalence in the following electrical and mechanical parameters:

Capacitance Value: 9 pF (exact match required)
Tolerance: ±0.5 pF (defines acceptable variation)
Voltage Rating: 500 V (minimum acceptable rating)
Dielectric Material: Mica (maintains RF performance and low-loss characteristics)
Mounting Type: Through Hole
Package Configuration: Radial
Lead Spacing: 0.232" (5.90 mm) (ensures PCB compatibility)
Operating Temperature Range: -55°C to 150°C (thermal stability requirement)

These parameters establish the baseline for direct substitution. Parts meeting all specified criteria are considered functionally equivalent.

Parameter Comparison

Parameter	CD17CD090DO3	CD17CD090DO3F
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier Electronics
Series	CD17	CD17
Capacitance	9 pF	9 pF
Tolerance	±0.5 pF	±0.5 pF
Voltage Rating	500 V	500 V
Dielectric Material	Mica	Mica
Operating Temperature	-55°C ~ 150°C	-55°C ~ 150°C
Mounting Type	Through Hole	Through Hole
Package / Case	Radial	Radial
Lead Spacing	0.232" (5.90 mm)	0.232" (5.90 mm)
Features	RF, High Q, Low Loss	RF, High Q, Low Loss
Size / Dimension	0.449" L × 0.169" W (11.40 mm × 4.30 mm)	0.449" L × 0.169" W (11.40 mm × 4.30 mm)
Height - Seated (Max)	0.358" (9.10 mm)	0.358" (9.10 mm)
ECCN	EAR99	EAR99
HTSUS	8532.29.0020	8532.29.0020
RoHS Status	RoHS Non-Compliant	RoHS3 Compliant
REACH Status	REACH Affected	REACH Unaffected
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active

Engineering Selection Recommendations

The CD17CD090DO3F serves as the direct parametric equivalent to the CD17CD090DO3, with all electrical and mechanical specifications identical. The distinction between these parts lies in compliance classifications:

CD17CD090DO3F Advantages: This variant achieves RoHS3 compliance and REACH unaffected status, making it suitable for applications with regulatory requirements for environmental and hazardous substance restrictions. The higher compliance level provides design flexibility for products subject to these regulations.

CD17CD090DO3 Considerations: The primary part remains active and suitable for applications without RoHS or REACH compliance mandates. Both variants demonstrate identical electrical performance, thermal stability, and RF characteristics across the -55°C to 150°C operating range.

Selection between these equivalent parts should be based on the regulatory environment of the application rather than electrical or mechanical differences.

Frequently Asked Questions (FAQ)

Q: Can CD17CD090DO3F be used as a direct replacement for CD17CD090DO3?

A: Yes. Both parts share identical electrical ratings (9 pF, ±0.5 pF, 500 V), thermal characteristics (-55°C to 150°C), and physical dimensions (0.232" lead spacing, radial package). Direct substitution on the PCB is possible without design modification.

Q: What is the difference between these two part numbers?

A: The CD17CD090DO3F incorporates RoHS3 compliance and maintains REACH unaffected status, whereas the CD17CD090DO3 is RoHS non-compliant and REACH affected. Electrical and mechanical specifications are unchanged.

Q: Are both parts currently available?

A: Yes. Both variants maintain active product status with production inventory. CD17CD090DO3F currently has 1236 pcs in stock, while CD17CD090DO3 has 1041 pcs in stock.

Q: Does the lead spacing remain the same for both parts?

A: Confirmed. Both parts feature 0.232" (5.90 mm) lead spacing, ensuring identical PCB footprint compatibility without layout modification.

Q: Which part should I select for new designs?

A: Selection depends on regulatory compliance requirements. For applications requiring RoHS3 and REACH compliance, specify CD17CD090DO3F. For applications without these requirements, either part is acceptable based on availability and supply chain considerations.

Q: What is the moisture sensitivity rating for these capacitors?

A: Both parts are classified MSL 1 (Unlimited), indicating the lowest moisture sensitivity level and requiring no special moisture control during storage or handling.

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