DSF050J184 Equivalent & Substitute Parts Reference

Part Overview

The DSF050J184 is a 0.18 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 50V DC voltage rating, designed for general-purpose applications. This component features polyester metallized-stacked dielectric construction in a radial through-hole package configuration.

The DSF050J184 is classified as obsolete. Locating equivalent substitute parts is necessary to support ongoing maintenance, repair, and production requirements for legacy equipment and systems utilizing this component.

Substiute Parts

DSF050J184

Cornell Dubilier Electronics (CDE)In Stock: 1100DSF050J184 Datasheet

Current PartRFQ

ECQ-E2184JB

Panasonic Electronic ComponentsIn Stock: 2755ECQ-E2184JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DSF050J184 is determined by the following critical parameters:

Mandatory Matching Criteria:

• Capacitance value: 0.18 µF
• Tolerance: ±5%
• Dielectric type: Polyester, Metallized
• Mounting type: Through Hole Radial
• Lead spacing: 0.197" (5.00mm)

Allowable Variation Criteria:

• Voltage rating may exceed the original 50V DC specification, provided the substitute part maintains compatibility with the circuit design
• Operating temperature range may extend beyond -40°C ~ 85°C
• Physical dimensions may vary within mechanical envelope constraints of the application
• Product status may differ (active vs. obsolete)

The ECQ-E2184JB from Panasonic Electronic Components qualifies as a substitute based on matching capacitance, tolerance, dielectric material, mounting configuration, and lead spacing. The higher voltage rating (250V DC) and extended temperature range (-40°C ~ 105°C) represent improvements over the original specification and do not preclude substitution.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E2184JB is an active production component from Panasonic Electronic Components and represents a viable substitute for the obsolete DSF050J184. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The ECQ-E2184JB provides superior electrical performance characteristics: the 250V DC rating exceeds the original 50V specification, and the extended operating temperature range (-40°C ~ 105°C) provides broader environmental tolerance compared to the DSF050J184 (-40°C ~ 85°C).

Physical dimensions differ between the two components. The ECQ-E2184JB measures 0.406" L x 0.197" W with a lead spacing of 0.295" (7.50mm), compared to the DSF050J184 at 0.287" L x 0.177" W with 0.197" (5.00mm) lead spacing. PCB layout and mechanical clearance must be evaluated for compatibility in the target application.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E2184JB directly replace the DSF050J184 without circuit modification?

A: The ECQ-E2184JB matches the critical electrical parameters (capacitance, tolerance, dielectric material) required for functional equivalence. However, the increased lead spacing (0.295" vs. 0.197") requires verification of PCB hole pattern compatibility. Physical dimensions must be confirmed against available mounting space in the target assembly.

Q: Why is the voltage rating higher on the substitute part?

A: The ECQ-E2184JB is rated for 250V DC, compared to the original 50V DC specification. A higher voltage rating does not create incompatibility; the component operates safely at voltages below its maximum rating. This characteristic may provide additional design margin in the application circuit.

Q: Are there any compliance or certification differences between these parts?

A: Both the DSF050J184 and ECQ-E2184JB are ROHS3 compliant and REACH unaffected. No compliance barriers exist for substitution from a regulatory standpoint.

Q: What is the significance of the different lead spacing?

A: Lead spacing determines PCB hole pattern compatibility. The DSF050J184 uses 0.197" (5.00mm) spacing, while the ECQ-E2184JB uses 0.295" (7.50mm) spacing. Direct PCB mounting without modification is not possible if hole patterns do not match. Mechanical adaptation or PCB redesign may be required.

Q: Does the extended operating temperature range of the ECQ-E2184JB affect substitution suitability?

A: The ECQ-E2184JB operating range (-40°C ~ 105°C) encompasses the original DSF050J184 range (-40°C ~ 85°C). The extended upper temperature limit represents an improvement and does not create substitution constraints.