DSF100J273 Equivalent & Substitute Parts Reference

Part Overview

The DSF100J273 is a 0.027 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 100V DC operation with ±5% tolerance. This component features polyester metallized-stacked dielectric construction in a radial through-hole package. The DSF100J273 is classified as obsolete; however, equivalent substitute parts remain available from active product lines. Identifying suitable alternatives ensures design continuity and maintains supply chain reliability for applications requiring this capacitance and voltage specification.

Substiute Parts

DSF100J273

Cornell Dubilier Electronics (CDE)In Stock: 993DSF100J273 Datasheet

Current PartRFQ

168273J100A-F

Cornell Dubilier Electronics (CDE)In Stock: 932168273J100A-F Datasheet

DirectRFQ

ECQ-E2273JB

Panasonic Electronic ComponentsIn Stock: 3258ECQ-E2273JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DSF100J273 are identified based on strict electrical and mechanical parameter alignment:

Primary Substitution Criteria:

• Capacitance value must equal 0.027 µF
• DC voltage rating must be ≥100V
• Tolerance must be ±5% or tighter
• Dielectric material must be polyester, metallized construction
• Lead spacing must equal 0.197" (5.00mm)
• Mounting type must be through-hole radial
• Termination must be PC pins
• RoHS3 compliance required

Acceptable Variations:

• Operating temperature range may differ (wider ranges acceptable)
• Physical dimensions may vary within package class constraints
• AC voltage rating may differ (not a primary selection criterion for DC-rated applications)
• Product status may transition from obsolete to active

Two substitute parts meet these criteria and are grouped as follows:

Direct Substitute (Preferred): 168273J100A-F maintains identical electrical specifications with enhanced temperature range and active product status.

Functional Equivalent (Higher Voltage Rating): ECQ-E2273JB provides identical capacitance and tolerance with elevated voltage rating (250V DC), suitable for applications requiring additional voltage margin.

Parameter Comparison

Engineering Selection Recommendations

168273J100A-F (Direct Substitute - Recommended for Standard Applications)

The 168273J100A-F is the primary substitute for DSF100J273 replacement. Both components are manufactured by Cornell Dubilier Electronics and maintain identical electrical specifications: 0.027 µF capacitance, ±5% tolerance, and 100V DC rating. The 168273J100A-F offers extended operating temperature range (-55°C to 125°C versus -40°C to 85°C), providing enhanced thermal performance. Lead spacing, mounting type, and termination are identical, ensuring direct PCB compatibility. The part is currently in active production status with ROHS3 compliance and REACH unaffected designation. This substitute is suitable for all applications where the original DSF100J273 was specified.

ECQ-E2273JB (Functional Equivalent - Higher Voltage Margin)

The ECQ-E2273JB, manufactured by Panasonic Electronic Components, provides identical capacitance (0.027 µF) and tolerance (±5%) with elevated DC voltage rating (250V versus 100V). This component is appropriate for applications requiring additional voltage safety margin or operating in higher voltage environments. Lead spacing and mounting configuration match the original specification. The part maintains ROHS3 compliance and REACH unaffected status. Physical dimensions differ slightly (0.311" L x 0.169" W versus 0.295" L x 0.126" W), requiring PCB layout verification before implementation. Operating temperature range extends to 105°C, supporting demanding thermal environments.

Selection Criteria:

• Use 168273J100A-F for direct replacement in existing designs without layout modification
• Use ECQ-E2273JB when higher voltage rating provides system-level benefits or when thermal performance requirements exceed the original specification
• Both substitutes maintain regulatory compliance and are available in active production

Frequently Asked Questions (FAQ)

Q: Can the 168273J100A-F be used as a direct drop-in replacement for DSF100J273?

A: Yes. The 168273J100A-F maintains identical lead spacing (0.197" / 5.00mm), radial package configuration, PC pin termination, and electrical specifications (0.027 µF, ±5%, 100V DC). No PCB layout modification is required.

Q: What is the primary difference between the two substitute parts?

A: The 168273J100A-F is a direct electrical equivalent from the same manufacturer (CDE) with identical voltage rating. The ECQ-E2273JB is a functional equivalent from Panasonic with doubled DC voltage rating (250V), providing higher voltage margin but requiring physical dimension verification due to slightly larger package size.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both 168273J100A-F and ECQ-E2273JB are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and use.

Q: Does the ECQ-E2273JB fit the same PCB footprint as the original DSF100J273?

A: Lead spacing is identical (0.197" / 5.00mm), ensuring footprint compatibility. However, the ECQ-E2273JB has larger overall dimensions (0.311" L x 0.169" W versus 0.295" L x 0.126" W). Physical clearance around the component location must be verified before implementation.

Q: Why is the DSF100J273 listed as obsolete?

A: The DSF100J273 is no longer in active production by Cornell Dubilier Electronics. The 168273J100A-F from the same manufacturer serves as the current production equivalent, ensuring continued availability and supply chain continuity.

Q: Can I use the ECQ-E2273JB in a 100V DC application?

A: Yes. The ECQ-E2273JB is rated for 250V DC, which exceeds the 100V requirement. Higher voltage-rated capacitors operate safely at lower voltages within their rated range.

Q: What is the lead spacing tolerance, and does it affect substitution?

A: Lead spacing for all three parts is 0.197" (5.00mm). This specification is critical for PCB footprint compatibility and must match exactly for through-hole assembly. All listed substitutes meet this requirement.

Q: Are there any temperature-related considerations when selecting a substitute?

A: The 168273J100A-F offers the widest operating range (-55°C to 125°C), while the ECQ-E2273JB operates from -40°C to 105°C. The original DSF100J273 operates from -40°C to 85°C. Select based on application temperature requirements; wider ranges provide additional design margin.