DSF050J123

Part Overview

The DSF050J123 is a 0.012 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated at 50V DC with polyester metallized dielectric and radial through-hole mounting. The product is obsolete, making substitute components necessary for new designs and ongoing system maintenance. The ECQ-E2123JB from Panasonic Electronic Components serves as an active substitute, providing equivalent capacitance and tolerance specifications with enhanced voltage rating and operational temperature range.

Substiute Parts

DSF050J123

Cornell Dubilier Electronics (CDE)In Stock: 1003DSF050J123 Datasheet

Current PartRFQ

ECQ-E2123JB

Panasonic Electronic ComponentsIn Stock: 927ECQ-E2123JB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

The ECQ-E2123JB qualifies as a functional substitute based on the following critical parameters:

Matching Parameters:

• Capacitance: 0.012 µF (identical)
• Tolerance: ±5% (identical)
• Dielectric Material: Polyester, Metallized (equivalent)
• Mounting Type: Through Hole (identical)
• Package / Case: Radial (identical)
• Lead Spacing: 0.197" (5.00mm) (identical)
• Termination: PC Pins (identical)

Enhanced Parameters: The ECQ-E2123JB provides a higher voltage rating (250V DC vs. 50V DC) and extended operating temperature range (-40°C ~ 105°C vs. -40°C ~ 85°C), making it suitable for applications requiring greater electrical margins and thermal stability.

Parameter Comparison

Engineering Selection Recommendations

The ECQ-E2123JB is recommended as a direct substitute for the obsolete DSF050J123. Both components comply with ROHS3 and maintain REACH compliance. The substitute maintains identical lead spacing and electrical characteristics for capacitance and tolerance, ensuring mechanical and electrical compatibility in circuit applications. The increased DC voltage rating and operating temperature range of the ECQ-E2123JB provide additional design margin for demanding applications. Component availability is confirmed with 842 pieces in active stock inventory, supporting production requirements.

Frequently Asked Questions (FAQ)

Can the ECQ-E2123JB be used as a direct PCB replacement for the DSF050J123?

Yes, with lead spacing consideration. Both components use identical 0.197" (5.00mm) lead spacing and PC pin termination, confirming through-hole PCB compatibility. The ECQ-E2123JB is slightly larger in overall dimensions (0.311" L x 0.165" W vs. 0.287" L x 0.126" W), with maximum seated height of 0.319" compared to 0.236". Verify that the PCB layout accommodates the increased physical footprint before assembly.

What are the electrical differences between these two capacitors?

The capacitance value and tolerance specification remain identical at 0.012 µF ±5%. The primary electrical difference is the voltage rating: the ECQ-E2123JB is rated at 250V DC with an AC rating of 125V, compared to the original 50V DC rating. This higher voltage capability makes the Panasonic component suitable for applications with greater electrical stress or higher supply voltages.

Are both capacitors suitable for the same temperature range?

No. The ECQ-E2123JB extends the operating temperature range to -40°C ~ 105°C, compared to the DSF050J123 range of -40°C ~ 85°C. This provides 20°C additional high-temperature capability, beneficial for applications in thermal or harsh environments.

Do both parts meet regulatory compliance requirements?

Yes. Both the DSF050J123 and ECQ-E2123JB are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99, confirming equivalent regulatory status and export classification.

What is the impact of the physical size difference?

The ECQ-E2123JB is larger in all dimensions. The length increases from 0.287" to 0.311", width from 0.126" to 0.165", and seated height from 0.236" to 0.319". Ensure PCB layout and component placement constraints accommodate these physical differences to prevent assembly conflicts or thermal management issues.