B32669C3255J Equivalent & Substitute Parts

Part Overview

The B32669C3255J is a 2.5 µF film capacitor manufactured by EPCOS - TDK Electronics, rated for 250V AC operation with polypropylene metallized dielectric construction. This component is designed for EMI and RFI suppression applications in through-hole axial configurations. The part is currently obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations.

Substiute Parts

B32669C3255J

EPCOS - TDK ElectronicsIn Stock: 1067B32669C3255J Datasheet

Current PartRFQ

761M25556C

Cornell Dubilier Electronics (CDE)In Stock: 938761M25556C Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the B32669C3255J is determined by the following critical parameters:

• Capacitance Value: Must be 2.5 µF
• Tolerance: Must be ±5% or tighter
• Voltage Rating - AC: Must be rated for minimum 250V AC
• Dielectric Material: Polypropylene (PP), Metallized construction required
• Mounting Type: Through Hole axial configuration mandatory
• Termination: PC Pins required for PCB compatibility
• RoHS Compliance: ROHS3 Compliant status required

The substitute part 761M25556C meets all these criteria while offering enhanced voltage rating capability and extended operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

The 761M25556C is a direct functional substitute for the B32669C3255J based on matching capacitance, tolerance, AC voltage rating, dielectric material, and termination specifications. Both components are ROHS3 compliant and suitable for EMI/RFI suppression applications.

The substitute part offers advantages in product availability (Active status versus Obsolete) and extended operating temperature range (-55°C minimum versus -40°C). The 630V DC rating provides additional voltage margin in applications where DC bias may be present.

Physical dimensions differ between the two parts. The 761M25556C is larger (34.80mm x 22.40mm x 44.20mm versus 14.00mm x 32.00mm), requiring verification of available PCB space and mounting clearance before implementation.

Frequently Asked Questions (FAQ)

Q: Can the 761M25556C replace the B32669C3255J in existing designs?

A: Yes, provided PCB layout accommodates the larger physical dimensions. The electrical specifications (2.5 µF, ±5% tolerance, 250V AC rating, polypropylene dielectric, axial through-hole configuration) are equivalent.

Q: What is the significance of the 630V DC rating on the substitute part?

A: The 630V DC rating indicates higher voltage capability than the main part. This does not affect AC-only applications but provides additional safety margin if DC bias voltage is present in the circuit.

Q: Are there any temperature-related limitations when substituting?

A: The substitute part operates at -55°C minimum versus -40°C for the original part, providing extended low-temperature capability. Both parts share the same 85°C maximum operating temperature.

Q: Does the size difference affect electrical performance?

A: Physical dimensions do not affect electrical performance. Size differences are due to manufacturing design variations between manufacturers. Verification of PCB mounting space is required before substitution.

Q: Are both parts RoHS compliant?

A: Yes, both the B32669C3255J and 761M25556C are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.