170334J160EC Film Capacitor Equivalent & Substitute Parts

Part Overview

The 170334J160EC is a 0.33 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 160V DC voltage rating and ±5% tolerance. This component is classified as obsolete, necessitating identification of equivalent substitute parts for ongoing applications requiring DC link and DC filtering functionality. The axial through-hole configuration and polypropylene metallized dielectric provide low ESR characteristics suitable for these applications.

Substiute Parts

170334J160EC

Cornell Dubilier Electronics (CDE)In Stock: 1203170334J160EC Datasheet

Current PartRFQ

150334K250FC

Cornell Dubilier Electronics (CDE)In Stock: 1102150334K250FC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 170334J160EC is determined by the following critical parameters:

Capacitance Value: The substitute part must maintain 0.33 µF capacitance to preserve circuit functionality.

Voltage Rating: The substitute must meet or exceed the 160V DC requirement of the original circuit design. A higher voltage rating provides additional safety margin and is acceptable for substitution.

Dielectric Material: While the original part uses polypropylene metallized film, polyester metallized film is an acceptable substitute material for general-purpose and DC filtering applications, provided voltage and capacitance specifications are maintained.

Mounting Configuration: The substitute must retain axial through-hole mounting to ensure mechanical and electrical compatibility with existing PCB layouts.

Tolerance: The substitute tolerance of ±10% is wider than the original ±5%, which is acceptable for most DC filtering and DC link applications where exact capacitance matching is not critical.

Operating Temperature: The substitute operating range of -55°C ~ 125°C exceeds the original -55°C ~ 105°C specification, providing enhanced thermal performance.

Parameter Comparison

Engineering Selection Recommendations

The 150334K250FC serves as a direct substitute for the obsolete 170334J160EC based on the following engineering criteria:

Capacitance Equivalence: Both parts maintain identical 0.33 µF capacitance values, ensuring circuit performance is preserved.

Voltage Margin: The substitute's 250V DC rating exceeds the original 160V requirement, providing increased operational safety and component longevity in DC link and DC filtering applications.

Compliance Status: The 150334K250FC is classified as Active product status with ROHS3 compliance, whereas the original part is obsolete with unverified RoHS status. This substitution ensures access to compliant, currently manufactured components.

Mechanical Compatibility: Both components feature identical axial through-hole mounting with PC pin termination. The dimensional difference (0.335" vs 0.315" diameter) is minimal and does not impact PCB layout compatibility for standard through-hole spacing.

Thermal Performance: The substitute's extended operating temperature range (-55°C ~ 125°C) provides enhanced performance in temperature-sensitive applications compared to the original specification.

Dielectric Material Transition: The shift from polypropylene to polyester metallized film is acceptable for general-purpose DC filtering applications. Polyester film maintains stable capacitance across the operating temperature range and provides reliable performance in DC link circuits.

Frequently Asked Questions (FAQ)

Q: Can the 150334K250FC directly replace the 170334J160EC in existing designs?

A: Yes. Both components share identical capacitance (0.33 µF), axial through-hole mounting, and PC pin termination. The substitute's higher voltage rating (250V vs 160V) and extended temperature range provide enhanced performance margins. The minimal diameter increase (0.335" vs 0.315") does not affect standard PCB hole spacing.

Q: What is the impact of the tolerance change from ±5% to ±10%?

A: The wider tolerance of the substitute part is acceptable for DC filtering and DC link applications where capacitance variation within ±10% does not compromise circuit function. Applications requiring tighter capacitance tolerance should evaluate circuit sensitivity before substitution.

Q: Why is the dielectric material different between the original and substitute?

A: The original part uses polypropylene metallized film, while the substitute uses polyester metallized film. Both materials are suitable for DC filtering and general-purpose applications. Polyester film provides stable performance across the extended operating temperature range and is widely used in active production components.

Q: Are there any compliance or regulatory differences?

A: The substitute part (150334K250FC) is ROHS3 compliant and currently in active production status. The original part (170334J160EC) is obsolete with unverified RoHS status. Substitution ensures compliance with current regulatory requirements and access to supported components.

Q: Does the higher voltage rating of the substitute affect circuit operation?

A: No. A higher voltage rating does not negatively impact circuit operation. The 250V rating of the substitute provides additional safety margin and extends component lifespan in the 160V application environment.

Q: What is the lead spacing consideration for PCB layout?

A: Both components feature axial through-hole configuration with PC pin termination. The 0.807" (20.50mm) length is identical for both parts, ensuring compatibility with existing PCB hole spacing and lead positioning.