DSF050J274 Film Capacitor - Equivalent & Substitute Parts

Part Overview

The DSF050J274 is a 0.27 µF film capacitor rated for 50V DC with ±5% tolerance, manufactured by Cornell Dubilier Electronics (CDE) in the DSF series. This component is classified as obsolete, making equivalent substitute parts essential for design continuity and procurement. The polyester metallized dielectric construction provides reliable performance for general-purpose applications requiring film capacitor characteristics. Locating active production alternatives with equivalent electrical specifications ensures uninterrupted supply chain availability.

Substiute Parts

DSF050J274

Cornell Dubilier Electronics (CDE)In Stock: 1213DSF050J274 Datasheet

Current PartRFQ

168274J63C-F

Cornell Dubilier Electronics (CDE)In Stock: 1214168274J63C-F Datasheet

DirectRFQ

ECQ-E2274JB

Panasonic Electronic ComponentsIn Stock: 1617ECQ-E2274JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DSF050J274 must satisfy the following electrical and mechanical compatibility criteria:

Primary Matching Criteria:

• Capacitance value of 0.27 µF (exact match required)
• Tolerance of ±5% (exact match required)
• DC voltage rating equal to or greater than 50V
• Polyester metallized dielectric material
• Through hole, radial package configuration
• PC pin termination
• Lead spacing of 0.197" (5.00mm)
• ROHS3 compliance

The substitute parts identified maintain identical capacitance and tolerance specifications while offering equal or superior voltage ratings and operating temperature performance. Dimensional variations are acceptable provided the radial package footprint remains compatible with the standard 0.197" lead spacing and mounting requirements.

Parameter Comparison

Engineering Selection Recommendations

168274J63C-F (CDE): This substitute provides direct functional equivalence with superior voltage rating (63V DC versus 50V DC) and extended operating temperature range (-55°C to 125°C). Both components share identical manufacturer source, capacitance, and tolerance specifications. The component is in active production status, ensuring long-term supply availability. Lead spacing remains standard at 0.197" (5.00mm), maintaining PCB footprint compatibility. ROHS3 compliance is maintained.

ECQ-E2274JB (Panasonic): This alternative offers the highest voltage margin at 250V DC with extended AC rating (125V) and temperature operating range (-40°C to 105°C). Panasonic sourcing provides an independent supply chain option. Active production status guarantees availability. Critical consideration: this component features 0.295" (7.50mm) lead spacing, diverging from the standard 0.197" (5.00mm) spacing of the original part, requiring PCB layout verification before implementation.

Both substitutes maintain ROHS3 compliance and polyester metallized dielectric construction. Selection should be based on voltage margin requirements, thermal operating envelope, lead spacing PCB constraints, and supplier availability preferences.

Frequently Asked Questions (FAQ)

Q: Can 168274J63C-F directly replace DSF050J274 without PCB modification? A: Yes. Both components share identical capacitance (0.27 µF), tolerance (±5%), and lead spacing (0.197"/5.00mm). The increased voltage rating (63V) and wider temperature range represent performance improvements, not compatibility concerns.

Q: What is the lead spacing difference in ECQ-E2274JB and does it matter? A: ECQ-E2274JB uses 0.295" (7.50mm) lead spacing compared to 0.197" (5.00mm) for the original and CDE substitute. This difference requires PCB layout verification. If the original design specifies 0.197" spacing, physical hole-to-hole distance must be confirmed compatible before selection.

Q: Are all substitutes RoHS compliant like the original? A: Yes. All three parts—DSF050J274, 168274J63C-F, and ECQ-E2274JB—carry ROHS3 compliance certification.

Q: Which substitute provides the best voltage safety margin? A: ECQ-E2274JB offers the highest voltage rating at 250V DC. For circuits operating at 50V or below, this provides maximum derating headroom. 168274J63C-F provides adequate margin at 63V DC.

Q: Is the dielectric material identical across all options? A: All three components use polyester metallized dielectric construction. DSF050J274 specifies "stacked" configuration, while substitutes use standard polyester metallized construction. Both provide equivalent electrical performance for general-purpose applications.

Q: Can I use these capacitors interchangeably in production? A: 168274J63C-F operates as a direct equivalent. ECQ-E2274JB requires PCB layout verification due to lead spacing difference. Both provide active production status for sustained supply availability, unlike the obsolete DSF050J274.