DSF050J183 Equivalent & Substitute Parts Reference

Part Overview

The DSF050J183 is a 0.018 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 50V DC operation with ±5% tolerance. This component features polyester metallized-stacked dielectric construction in a radial through-hole package. The DSF050J183 is classified as obsolete, making identification of functionally equivalent substitute components necessary for ongoing design support and production continuity. Substitute parts must maintain electrical compatibility across capacitance, tolerance, voltage rating, and physical form factor parameters.

Substiute Parts

DSF050J183

Cornell Dubilier Electronics (CDE)In Stock: 956DSF050J183 Datasheet

Current PartRFQ

ECQ-E2183JB

Panasonic Electronic ComponentsIn Stock: 1868ECQ-E2183JB Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute components for the DSF050J183 are identified based on strict electrical and mechanical compatibility criteria. The following parameters define valid substitution:

Mandatory Match Parameters:

• Capacitance value: 0.018 µF (exact match required)
• Tolerance: ±5% (substitute tolerance must be equal or tighter)
• Dielectric material: Polyester, Metallized (same material family)
• Mounting type: Through Hole Radial (same package configuration)
• Lead spacing: 0.197" (5.00mm) (PCB hole pattern compatibility)
• Termination: PC Pins (same connection method)

Allowable Upgrade Parameters:

• Voltage rating: Substitute must be rated 50V DC or higher
• Operating temperature range: Substitute must support -40°C ~ 85°C minimum
• Physical dimensions: Substitute may exceed original dimensions if lead spacing remains constant

Compliance Requirements:

• RoHS3 compliance maintained
• REACH unaffected status maintained

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E2183JB qualifies as a direct electrical substitute for the DSF050J183 based on the following criteria:

Electrical Compatibility: The ECQ-E2183JB maintains identical capacitance (0.018 µF) and tolerance (±5%) specifications. The substitute's 250V DC rating exceeds the original 50V requirement, providing additional voltage margin. Both components utilize polyester metallized dielectric construction within the same material family.

Mechanical Compatibility: Lead spacing remains constant at 0.197" (5.00mm), ensuring PCB hole pattern compatibility. Both components feature radial through-hole mounting with PC pin termination. The ECQ-E2183JB exhibits larger physical dimensions (0.311" L × 0.169" W × 0.323" H maximum) compared to the original (0.287" L × 0.126" W × 0.236" H maximum). PCB layout verification is required to confirm clearance for the substitute component.

Regulatory and Compliance Status: Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements. The ECQ-E2183JB is actively manufactured by Panasonic, providing long-term supply availability compared to the obsolete DSF050J183.

Temperature Performance: The substitute supports an extended operating temperature range of -40°C ~ 105°C, exceeding the original -40°C ~ 85°C specification.

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E2183JB be used as a direct replacement for the DSF050J183?

A: Yes. The ECQ-E2183JB meets all mandatory electrical and mechanical compatibility criteria: identical 0.018 µF capacitance, ±5% tolerance, polyester metallized dielectric, 0.197" lead spacing, and radial through-hole configuration. The substitute's higher voltage rating (250V vs. 50V) and extended temperature range (-40°C ~ 105°C vs. -40°C ~ 85°C) provide performance margins. Physical dimensions are larger; PCB layout clearance must be verified.

Q: What are the key differences between these two capacitors?

A: The primary differences are manufacturer (CDE vs. Panasonic), product status (obsolete vs. active), voltage rating (50V vs. 250V), temperature range (-40°C ~ 85°C vs. -40°C ~ 105°C), and physical size. The ECQ-E2183JB is larger in all dimensions but maintains identical lead spacing and electrical specifications.

Q: Will the larger physical size of the ECQ-E2183JB cause PCB compatibility issues?

A: The ECQ-E2183JB is 0.024" longer, 0.043" wider, and 0.087" taller than the DSF050J183. Lead spacing remains identical at 0.197" (5.00mm), so hole pattern compatibility is maintained. PCB layout review is necessary to confirm adequate clearance around the component footprint, particularly in height-constrained applications.

Q: Are both components RoHS compliant?

A: Yes. Both the DSF050J183 and ECQ-E2183JB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Why is the ECQ-E2183JB rated for 250V when the original is only 50V?

A: The higher voltage rating reflects Panasonic's design specifications for the ECQ-E series. A higher voltage rating does not negatively affect circuit performance in lower-voltage applications; the component will operate safely at 50V or below. The additional voltage margin may provide improved reliability in applications subject to voltage transients.

Q: Is the extended temperature range of the ECQ-E2183JB (-40°C ~ 105°C) beneficial?

A: The extended upper temperature limit (105°C vs. 85°C) provides additional thermal margin in applications operating near maximum ambient temperature or with elevated component self-heating. This specification does not affect performance in applications within the original -40°C ~ 85°C range.

Q: What is the inventory status of these components?

A: The DSF050J183 has 882 pieces in stock but is classified as obsolete with no ongoing manufacturing. The ECQ-E2183JB has 1,810 pieces in stock and is actively manufactured by Panasonic, ensuring long-term availability for future production requirements.