TC67 Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The TC67 is a 40 µF, 350 V aluminum electrolytic capacitor in axial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete and is used in general-purpose applications requiring polar capacitive energy storage and filtering.

Due to its obsolete product status, direct sourcing of the TC67 may present supply chain challenges. Equivalent substitute parts with matching or superior electrical and mechanical specifications are available to ensure design continuity and system reliability.

Substiute Parts

TC67

Cornell Dubilier Electronics (CDE)In Stock: 1009TC67 Datasheet

Current PartRFQ

WBR40-350A

Cornell Dubilier Electronics (CDE)In Stock: 1258WBR40-350A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TC67 is determined by the following critical parameters:

Primary Matching Criteria:

• Capacitance value: 40 µF (exact match required)
• Voltage rating: 350 V (minimum requirement; higher ratings acceptable)
• Polarization: Polar (mandatory for circuit compatibility)
• Package type: Axial, Can (mechanical and electrical interface requirement)
• Mounting type: Through Hole (PCB assembly compatibility)

Secondary Compatibility Factors:

• Operating temperature range: -40°C ~ 85°C (must encompass or match application requirements)
• ESR and ripple current ratings: Must be suitable for the intended circuit application
• Tolerance: -10%, +50% or better acceptable for general-purpose applications

The WBR40-350A meets all primary matching criteria and is therefore classified as a direct equivalent substitute for the TC67.

Parameter Comparison

Engineering Selection Recommendations

TC67 to WBR40-350A Substitution:

The WBR40-350A is a direct functional equivalent to the TC67 for applications requiring 40 µF capacitance at 350 V in axial, can package configuration. Both components share identical capacitance, voltage rating, operating temperature range, and mounting characteristics.

The WBR40-350A offers the following advantages:

• Extended lifetime: 2000 hours at 85°C versus 1000 hours for the TC67
• ROHS3 compliance status, whereas the TC67 is RoHS non-compliant
• Wider capacitance tolerance: -10%, +100% provides greater design flexibility

The WBR40-350A exhibits slightly higher ESR (5.1 Ohm versus 3.96 Ohm at 120 Hz). This difference is acceptable for general-purpose applications and does not preclude substitution in standard filtering and energy storage circuits.

Both components are classified as obsolete. Selection between them should be based on regulatory compliance requirements, supply availability, and application-specific ESR constraints.

Frequently Asked Questions (FAQ)

Q: Can the WBR40-350A replace the TC67 in existing designs?

A: Yes. The WBR40-350A is a direct substitute for the TC67. Both components have identical capacitance (40 µF), voltage rating (350 V), polarization (polar), package type (axial, can), and mounting type (through hole). Physical dimensions differ slightly, but both are through-hole mounted components suitable for standard PCB assembly.

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

A: The TC67 has an ESR of 3.96 Ohm at 120 Hz, while the WBR40-350A has an ESR of 5.1 Ohm at 120 Hz. For general-purpose applications, this difference is not significant. Applications with strict ESR requirements should verify compatibility with circuit specifications.

Q: Why does the WBR40-350A have a longer lifetime rating?

A: The WBR40-350A is rated for 2000 hours at 85°C, compared to 1000 hours for the TC67. This reflects different design specifications within the CDE product portfolio. The extended lifetime of the WBR40-350A provides improved reliability for long-term applications.

Q: Are there physical dimension differences between TC67 and WBR40-350A?

A: Yes. The TC67 measures 0.875" diameter × 1.625" length (22.22 mm × 41.28 mm). The WBR40-350A measures 0.650" diameter × 1.830" length (16.51 mm × 46.48 mm). Both are axial, can package components with through-hole leads. PCB layout and mounting hole spacing must accommodate the WBR40-350A dimensions.

Q: What is the significance of RoHS compliance status?

A: The TC67 is RoHS non-compliant, while the WBR40-350A is ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the WBR40-350A is the appropriate selection. Both components have identical moisture sensitivity level (MSL 1 - Unlimited).

Q: Can I use these capacitors interchangeably in high-ripple-current applications?

A: Ripple current ratings differ between the two parts. The TC67 is rated for 514 mA at 120 Hz and 642.5 mA at 2.4 kHz. The WBR40-350A is rated for 135 mA at 120 Hz and 175.5 mA at 100 kHz. Application-specific ripple current requirements must be verified against the selected component's ratings.