DSF100J274

Part Overview

The DSF100J274 is a 0.27 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) rated for 100V DC operation with polyester metallized dielectric material and radial through-hole mounting. This component is classified as obsolete, making identification of compatible substitutes necessary for ongoing production support and design continuity.

Substiute Parts

DSF100J274

Cornell Dubilier Electronics (CDE)In Stock: 813DSF100J274 Datasheet

Current PartRFQ

ECQ-E2274JB

Panasonic Electronic ComponentsIn Stock: 1617ECQ-E2274JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DSF100J274 is determined by the following critical parameters that must be maintained or exceeded:

• Capacitance: 0.27 µF (exact match required)
• Tolerance: ±5% (exact match required)
• Voltage Rating - DC: Minimum 100V (equal or higher acceptable)
• Dielectric Material: Polyester, Metallized (functional equivalence required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial (exact match required)
• Lead Spacing: 0.295" (7.50mm) (exact match required for PCB compatibility)
• Termination: PC Pins (exact match required)

The ECQ-E2274JB meets all substitution criteria with superior voltage ratings and temperature operating range, providing enhanced margin for circuit reliability.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E2274JB represents the qualified substitute for the obsolete DSF100J274. Both components maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory alignment. The ECQ-E2274JB carries active product status with established supply chain availability (1574 Pcs inventory) compared to the obsolete DSF100J274 (727 Pcs available).

The ECQ-E2274JB exhibits superior electrical specifications with 250V DC and 125V AC ratings against the original 100V DC specification, providing enhanced safety margins. The extended operating temperature range (-40°C ~ 105°C versus -40°C ~ 85°C) accommodates broader environmental conditions. Physical dimensions require verification for PCB layout compatibility, as the substitute exhibits increased width (0.232" versus 0.165") and height (0.465" versus 0.394"), though lead spacing remains identical at 0.295" (7.50mm).

Frequently Asked Questions (FAQ)

Q: Can the ECQ-E2274JB directly replace the DSF100J274 in existing designs?

A: The ECQ-E2274JB is electrically compatible as a substitute for the DSF100J274 across all critical parameters: capacitance (0.27 µF), tolerance (±5%), and lead spacing (0.295"). PCB layout verification is required due to increased physical dimensions.

Q: Why is the ECQ-E2274JB rated at 250V DC while the original is 100V DC?

A: The higher voltage rating provides additional safety margin and does not negatively impact circuit operation in 100V DC applications. The substitute maintains the required capacitance and tolerance specifications.

Q: Are there any compliance differences between the two parts?

A: Both components are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS codes, ensuring regulatory equivalence.

Q: Does the increased height of the ECQ-E2274JB affect board design?

A: The ECQ-E2274JB seated height is 0.465" compared to 0.394" for the original. PCB layout and enclosure clearance must be verified to accommodate this dimension change.

Q: What is the lead spacing for both components?

A: Both the DSF100J274 and ECQ-E2274JB maintain 0.295" (7.50mm) lead spacing, ensuring PCB footprint compatibility at the mounting points.