CD30FD183JO3 Mica Capacitor Equivalent & Substitute Parts

Part Overview

The CD30FD183JO3 is a 0.018 µF mica capacitor rated for 500 V operation, manufactured by Cornell Dubilier Electronics (CDE) in the CD30 series. This through-hole radial component is designed for general-purpose applications requiring stable capacitance and high voltage performance across extended temperature ranges from -55°C to 125°C. The part is currently active in production with 1112 units in stock.

Identifying equivalent and substitute parts is necessary when the primary part number becomes unavailable, when alternative compliance certifications are required, or when inventory constraints necessitate sourcing from available stock of functionally identical components.

Key Parameters

Parameter	Value
Capacitance	0.018 µF
Tolerance	±5%
Voltage Rating	500 V
Dielectric Material	Mica
Mounting Type	Through Hole
Package Type	Radial
Lead Spacing	0.437" (11.10 mm)
Operating Temperature Range	-55°C to 125°C
Physical Dimensions	0.819" L × 0.429" W (20.80 mm × 10.90 mm)
Maximum Seated Height	0.909" (23.10 mm)

Substitute Part Grouping Explanation

Substitution of the CD30FD183JO3 is determined by strict equivalence across the following critical parameters:

Capacitance Value: 0.018 µF (exact match required)
Tolerance: ±5% (exact match required)
Voltage Rating: 500 V (exact match required)
Dielectric Type: Mica (exact match required)
Mounting Configuration: Through-hole radial (exact match required)
Lead Spacing: 0.437" / 11.10 mm (exact match required)
Temperature Range: -55°C to 125°C (exact match required)
Physical Envelope: 0.819" L × 0.429" W, 0.909" max height (exact match required)

The substitute part CD30FD183JO3F meets all electrical and mechanical parameters identically to the primary part. The only differences are in regulatory compliance status (RoHS and REACH certifications), which do not affect electrical or mechanical interchangeability.

Parameter Comparison

Parameter	CD30FD183JO3	CD30FD183JO3F	Match
Capacitance	0.018 µF	0.018 µF	✓
Tolerance	±5%	±5%	✓
Voltage Rating	500 V	500 V	✓
Dielectric Material	Mica	Mica	✓
Mounting Type	Through Hole	Through Hole	✓
Package Type	Radial	Radial	✓
Lead Spacing	0.437" (11.10 mm)	0.437" (11.10 mm)	✓
Operating Temperature	-55°C to 125°C	-55°C to 125°C	✓
Dimensions (L × W)	0.819" × 0.429" (20.80 × 10.90 mm)	0.819" × 0.429" (20.80 × 10.90 mm)	✓
Max Seated Height	0.909" (23.10 mm)	0.909" (23.10 mm)	✓
RoHS Status	Non-compliant	ROHS3 Compliant	Different
REACH Status	REACH Affected	REACH Unaffected	Different
Current Inventory	1112 Pcs	1014 Pcs	Both Available

Engineering Selection Recommendations

CD30FD183JO3 is suitable for applications where RoHS non-compliance is acceptable or where legacy component specifications are required. This part maintains full electrical and mechanical compatibility with existing designs.

CD30FD183JO3F is the preferred selection for new designs, production runs subject to RoHS3 compliance requirements, or applications where REACH-unaffected status is mandated. This variant provides identical electrical performance and mechanical fit while meeting current regulatory standards.

Both parts are active products with adequate inventory levels. Selection between them should be based solely on regulatory compliance requirements applicable to the end application or market region.

Frequently Asked Questions (FAQ)

Q: Can CD30FD183JO3F be used as a direct replacement for CD30FD183JO3 in existing assemblies?

A: Yes. The parts are electrically and mechanically identical. All critical parameters including capacitance, voltage rating, tolerance, lead spacing, and physical dimensions match exactly. The only differences are regulatory compliance certifications, which do not affect circuit performance or board-level compatibility.

Q: What is the significance of the RoHS3 compliance difference?

A: RoHS3 compliance indicates the CD30FD183JO3F meets current European Union Restriction of Hazardous Substances regulations. The CD30FD183JO3 is non-compliant with these standards. Selection depends on whether the application or market requires RoHS certification.

Q: Does REACH status affect electrical performance?

A: No. REACH status indicates regulatory classification for substance registration and does not alter electrical characteristics, performance, or reliability of the capacitor.

Q: Are the physical dimensions identical between both parts?

A: Yes. Both parts have identical lead spacing (0.437" / 11.10 mm), body dimensions (0.819" L × 0.429" W), and maximum seated height (0.909" / 23.10 mm). They are mechanically interchangeable in PCB layouts and through-hole mounting applications.

Q: Which part should be specified for new designs?

A: CD30FD183JO3F should be specified for new designs to ensure compliance with current regulatory standards and to avoid future obsolescence of non-compliant variants.

Q: Is there a performance difference in operating temperature range?

A: No. Both parts operate identically across the -55°C to 125°C temperature range with no performance degradation or derating differences.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message