Equivalent & Substitute Parts for DSF050J154

Part Overview

The DSF050J154 is a 0.15 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 50V DC operation with ±5% tolerance. This component features a polyester metallized-stacked dielectric in a radial through-hole package. The part is classified as obsolete, making identification of equivalent and substitute components essential for ongoing design support, maintenance, and production continuity. Substitute parts must maintain the core electrical specifications (capacitance, voltage rating, tolerance) while accommodating variations in physical dimensions, temperature range, and dielectric composition within acceptable engineering parameters.

Key Parameters

Parameter	Value	Criticality for Substitution
Capacitance	0.15 µF	Critical - Must match exactly
Voltage Rating (DC)	50V	Critical - Substitute must meet or exceed
Tolerance	±5%	Critical - Must match or be tighter
Dielectric Material	Polyester, Metallized	Important - Affects performance characteristics
Mounting Type	Through Hole Radial	Important - Determines PCB compatibility
Lead Spacing	0.197" (5.00mm)	Critical - Must match for PCB fit
Operating Temperature Range	-40°C ~ 85°C	Important - Substitute must cover application range
RoHS Compliance	ROHS3 Compliant	Important - Regulatory requirement

Substitute Part Grouping Explanation

Substitution logic for the DSF050J154 is based on strict electrical and mechanical parameter alignment:

Electrical Equivalence Requirements:

Capacitance value must be 0.15 µF (no tolerance)
DC voltage rating must be ≥50V
Tolerance must be ±5% or tighter
Dielectric material must be polyester-based (metallized)

Mechanical Compatibility Requirements:

Mounting type must be through-hole radial
Lead spacing must be 0.197" (5.00mm)
Physical dimensions must accommodate PCB layout constraints
Termination must be PC pins

Regulatory & Compliance Requirements:

RoHS3 compliance mandatory
REACH unaffected status required

Three substitute parts meet these criteria with varying degrees of parameter alignment. Each substitute maintains the critical electrical specifications while offering different voltage ratings, temperature ranges, and physical footprints.

Parameter Comparison

Parameter	DSF050J154 (Main)	168154J50A-F	ECQ-E2154JB	R82DC3150AA60J
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Panasonic Electronic Components	KEMET
Capacitance	0.15 µF	0.15 µF	0.15 µF	0.15 µF
Tolerance	±5%	±5%	±5%	±5%
Voltage Rating (DC)	50V	50V	250V	63V
Voltage Rating (AC)	—	30V	125V	40V
Dielectric Material	Polyester, Metallized - Stacked	Polyester, Metallized	Polyester, Metallized	Polyester, PET, Metallized - Stacked
Operating Temperature	-40°C ~ 85°C	-55°C ~ 125°C	-40°C ~ 105°C	-55°C ~ 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial	Radial
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Size / Dimension (L x W)	0.287" x 0.173" (7.30mm x 4.40mm)	0.283" x 0.098" (7.20mm x 2.50mm)	0.311" x 0.248" (7.90mm x 6.30mm)	0.283" x 0.098" (7.20mm x 2.50mm)
Height - Seated (Max)	0.256" (6.50mm)	0.256" (6.50mm)	0.480" (12.20mm)	0.260" (6.60mm)
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

168154J50A-F (Direct Equivalent - Preferred)

The 168154J50A-F is the primary substitute for the DSF050J154. Both parts are manufactured by Cornell Dubilier Electronics and share identical electrical specifications (0.15 µF, ±5%, 50V DC). The 168154J50A-F is active in production, ensuring long-term availability. Physical dimensions are nearly identical (0.283" x 0.098" vs. 0.287" x 0.173"), with matching lead spacing and seated height. The extended operating temperature range (-55°C ~ 125°C) provides superior thermal performance compared to the original part (-40°C ~ 85°C). This part is suitable for direct replacement in applications where the original DSF050J154 is specified.

R82DC3150AA60J (Voltage-Rated Substitute - Conditional)

The R82DC3150AA60J, manufactured by KEMET, meets all critical electrical parameters (0.15 µF, ±5%, 63V DC). The 63V rating exceeds the 50V requirement, providing additional voltage margin. This part is active in production with AEC-Q200 automotive qualification. Physical dimensions (0.283" x 0.098") and lead spacing match the original specification. The extended temperature range (-55°C ~ 105°C) supports demanding applications. This substitute is appropriate for applications requiring automotive-grade reliability or where higher voltage margin is beneficial.

ECQ-E2154JB (Higher Voltage Substitute - Limited Application)

The ECQ-E2154JB, manufactured by Panasonic Electronic Components, maintains the core electrical specification (0.15 µF, ±5%) but features a significantly higher voltage rating (250V DC). This part is active in production and ROHS3 compliant. However, the physical footprint is substantially larger (0.311" x 0.248", height 0.480") compared to the original (0.287" x 0.173", height 0.256"). This dimensional difference may create PCB layout conflicts in space-constrained applications. The ECQ-E2154JB is suitable only for applications where the larger footprint can be accommodated and the higher voltage rating provides design benefits.

Frequently Asked Questions (FAQ)

Q: Can the 168154J50A-F be used as a direct replacement for the DSF050J154?

A: Yes. The 168154J50A-F is electrically and mechanically equivalent to the DSF050J154. Both parts share identical capacitance (0.15 µF), tolerance (±5%), voltage rating (50V DC), lead spacing (5.00mm), and mounting type (through-hole radial). The 168154J50A-F is active in production, addressing the obsolescence of the original part.

Q: What is the difference between the 168154J50A-F and the R82DC3150AA60J?

A: Both parts are electrically equivalent (0.15 µF, ±5%) and mechanically compatible (5.00mm lead spacing, through-hole radial). The primary differences are: (1) Voltage rating: R82DC3150AA60J is rated 63V DC versus 50V DC for the 168154J50A-F, providing additional voltage margin; (2) Manufacturer: KEMET versus Cornell Dubilier Electronics; (3) Automotive qualification: R82DC3150AA60J carries AEC-Q200 certification. Selection depends on application requirements for voltage margin and automotive compliance.

Q: Why is the ECQ-E2154JB larger than the other substitutes?

A: The ECQ-E2154JB features a 250V DC rating, significantly higher than the 50V requirement of the DSF050J154. Higher voltage ratings typically require larger dielectric volumes and physical packages to maintain electrical safety margins. The ECQ-E2154JB dimensions (0.311" x 0.248", height 0.480") reflect this higher voltage specification. This part is suitable only when PCB layout accommodates the larger footprint.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All three substitute parts (168154J50A-F, R82DC3150AA60J, ECQ-E2154JB) are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: What is the lead spacing requirement for substitution?

A: The lead spacing must be 0.197" (5.00mm) to ensure PCB compatibility. All substitute parts maintain this specification, allowing direct PCB mounting without layout modification.

Q: Can I use a substitute part with a higher voltage rating in place of the DSF050J154?

A: Yes. A substitute part with a higher voltage rating (such as the R82DC3150AA60J at 63V or ECQ-E2154JB at 250V) can be used in applications originally specified for 50V DC. Higher voltage ratings provide additional safety margin and do not degrade circuit performance. However, physical dimensions must remain compatible with PCB layout constraints.

Q: What is the operating temperature range consideration for substitution?

A: The DSF050J154 operates from -40°C to 85°C. Both the 168154J50A-F (-55°C ~ 125°C) and R82DC3150AA60J (-55°C ~ 105°C) offer extended temperature ranges, providing superior performance in temperature-extreme applications. The ECQ-E2154JB (-40°C ~ 105°C) covers the original range with extended upper limit. Substitutes with extended ranges are suitable for all applications where the original part was specified.

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