Equivalent & Substitute Parts for 184684J63RCA-F

Part Overview

The 184684J63RCA-F is a 0.68 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 63V DC operation with ±5% tolerance. This radial polyester metallized capacitor is designed for general-purpose applications and is currently in active production status with 895 units in stock. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate varying packaging or performance requirements across different application scenarios.

Key Parameters

Parameter	Value	Substitution Relevance
Capacitance	0.68 µF	Critical - must match exactly
Tolerance	±5%	Critical - determines circuit accuracy
Voltage Rating (DC)	63V	Critical - minimum requirement for safe operation
Voltage Rating (AC)	40V	Critical - for AC applications
Dielectric Material	Polyester, Metallized	Critical - affects performance characteristics
Operating Temperature Range	-55°C to 125°C	Important - defines environmental compatibility
Mounting Type	Through Hole, Radial	Critical - determines PCB compatibility
Lead Spacing	0.295" (7.50mm)	Important - affects PCB layout fit
Termination	PC Pins	Critical - connection method
RoHS Status	ROHS3 Compliant	Important - regulatory compliance

Substitute Part Grouping Explanation

Substitution eligibility for the 184684J63RCA-F is determined by strict adherence to the following parameters:

Critical Matching Parameters:

Capacitance value: 0.68 µF (exact match required)
Tolerance: ±5% (exact match required)
Voltage Rating DC: minimum 63V (equal or higher acceptable)
Voltage Rating AC: minimum 40V (equal or higher acceptable)
Dielectric Material: Polyester, Metallized (exact match required)
Mounting Type: Through Hole, Radial (exact match required)
Termination: PC Pins (exact match required)
Operating Temperature Range: -55°C to 125°C (exact match required)

Secondary Compatibility Parameters:

Lead Spacing: 0.295" (7.50mm) preferred for direct PCB fit; alternative spacing requires board redesign
Package dimensions: variations acceptable if mounting footprint permits
Packaging format: Tape & Reel (TR) or Bulk acceptable depending on assembly requirements

The substitute parts listed below are grouped into three categories:

Direct Equivalents - Identical electrical and mechanical specifications with different packaging
Upgrade Equivalents - Higher voltage rating with same capacitance and tolerance
Similar Equivalents - Matching electrical specifications with different physical dimensions or lead spacing

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Dielectric	Temp Range	Lead Spacing	Size (L x W)	Height Max	Packaging	Inventory
184684J63RCA-F	Cornell Dubilier Electronics	0.68 µF	±5%	63V	40V	Polyester, Metallized	-55°C to 125°C	0.295" (7.50mm)	0.413" x 0.197" (10.50mm x 5.00mm)	0.433" (11.00mm)	Tape & Reel	895 Pcs
B32520C0684J000	EPCOS - TDK Electronics	0.68 µF	±5%	63V	40V	Polyester, PET, Metallized - Stacked	-55°C to 125°C	0.295" (7.50mm)	0.394" x 0.157" (10.00mm x 4.00mm)	0.335" (8.50mm)	Bulk	7077 Pcs
B32520C1684J000	EPCOS - TDK Electronics	0.68 µF	±5%	100V	63V	Polyester, PET, Metallized - Stacked	-55°C to 125°C	0.295" (7.50mm)	0.406" x 0.236" (10.30mm x 6.00mm)	0.472" (12.00mm)	Bulk	12600 Pcs
B32521C0684J000	EPCOS - TDK Electronics	0.68 µF	±5%	63V	40V	Polyester, PET, Metallized - Stacked	-55°C to 125°C	0.394" (10.00mm)	0.512" x 0.157" (13.00mm x 4.00mm)	0.276" (7.00mm)	Bulk	1429 Pcs
B32529C0684J000	EPCOS - TDK Electronics	0.68 µF	±5%	63V	40V	Polyester, PET, Metallized - Stacked	-55°C to 125°C	0.197" (5.00mm)	0.287" x 0.177" (7.30mm x 4.50mm)	0.374" (9.50mm)	Bulk	6806 Pcs
B32529C0684J289	EPCOS - TDK Electronics	0.68 µF	±5%	63V	40V	Polyester, PET, Metallized - Stacked	-55°C to 125°C	0.197" (5.00mm)	0.287" x 0.177" (7.30mm x 4.50mm)	0.374" (9.50mm)	Tape & Box	2948 Pcs

Engineering Selection Recommendations

Direct Equivalent Selection (B32520C0684J000): This EPCOS part maintains identical electrical specifications (0.68 µF, ±5%, 63V DC, 40V AC) and lead spacing (7.50mm) as the 184684J63RCA-F. The primary difference is packaging format (Bulk vs. Tape & Reel) and slightly reduced physical dimensions. This part is suitable for direct substitution when bulk packaging is acceptable. ROHS3 compliance and AEC-Q200 automotive rating provide equivalent regulatory standing.

Upgrade Selection (B32520C1684J000): This part provides higher voltage rating (100V DC, 63V AC) while maintaining the same capacitance and tolerance. Selection of this upgrade is appropriate when circuit design permits higher voltage margin or when future design iterations may require increased voltage headroom. Larger physical dimensions (0.472" height) require verification of available PCB space. Lead spacing remains compatible at 7.50mm.

Compact Form Factor Selection (B32529C0684J000 or B32529C0684J289): These parts offer the same electrical specifications as the main part but with reduced physical dimensions and tighter lead spacing (5.00mm vs. 7.50mm). Selection requires PCB layout modification to accommodate the 5.00mm lead spacing. B32529C0684J289 provides Tape & Box packaging similar to the original Tape & Reel format. These options are suitable for space-constrained applications.

Extended Length Selection (B32521C0684J000): This part maintains electrical compatibility but features extended length (0.512") and wider lead spacing (10.00mm). Selection requires PCB redesign for the 10.00mm lead spacing. This configuration may be preferred in applications where horizontal PCB space is available but vertical clearance is limited (height only 0.276").

All substitute parts maintain ROHS3 compliance and -55°C to 125°C operating temperature range. EPCOS parts carry AEC-Q200 automotive qualification, providing enhanced reliability documentation.

Frequently Asked Questions (FAQ)

Q: Can B32520C1684J000 (100V rating) be used in place of 184684J63RCA-F (63V rating)?

A: Yes. The 100V DC rating of B32520C1684J000 exceeds the 63V requirement of the original circuit. Higher voltage-rated capacitors are electrically compatible with lower-voltage applications. However, the larger physical dimensions (0.472" height vs. 0.433") must be verified against available PCB clearance.

Q: What is the difference between B32520C0684J000 and B32529C0684J000?

A: Both parts have identical electrical specifications (0.68 µF, ±5%, 63V DC). The primary differences are physical dimensions and lead spacing. B32520C0684J000 maintains the 7.50mm lead spacing of the original part, while B32529C0684J000 uses 5.00mm spacing and is more compact. Lead spacing determines PCB hole pattern compatibility.

Q: Does packaging format (Tape & Reel vs. Bulk) affect electrical performance?

A: No. Packaging format affects only handling, storage, and assembly processes. Electrical and mechanical specifications remain identical. Selection between Tape & Reel (184684J63RCA-F, B32529C0684J289) and Bulk (B32520C0684J000, B32521C0684J000, B32529C0684J000) depends on assembly equipment and production volume requirements.

Q: Are EPCOS parts (B3252 series) direct replacements for the Cornell Dubilier 184684J63RCA-F?*

A: EPCOS parts are functionally equivalent when electrical specifications match. B32520C0684J000 provides the closest match with identical lead spacing (7.50mm). Other EPCOS variants require PCB layout verification due to different lead spacing or physical dimensions. All EPCOS parts listed maintain ROHS3 compliance and equivalent operating temperature range.

Q: Can I use B32521C0684J000 with 10.00mm lead spacing on a PCB designed for 7.50mm spacing?

A: No. Lead spacing determines PCB hole pattern positioning. Using 10.00mm spacing on a 7.50mm pattern will result in misalignment and assembly failure. PCB redesign is required to accommodate the 10.00mm lead spacing of B32521C0684J000.

Q: What does AEC-Q200 rating on EPCOS parts indicate?

A: AEC-Q200 is an automotive qualification standard indicating the part has undergone enhanced reliability testing and is approved for automotive applications. This certification provides additional quality assurance documentation compared to general-purpose ratings.

Q: Are all listed substitute parts ROHS3 compliant?

A: Yes. All parts listed (184684J63RCA-F and all EPCOS B3252* variants) carry ROHS3 compliance certification, meeting current environmental and hazardous substance restrictions.

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