DSF050J104 Equivalent & Substitute Parts

Part Overview

The DSF050J104 is a 0.1 µF film capacitor rated for 50V DC, manufactured by Cornell Dubilier Electronics (CDE) in the DSF series. This component features polyester metallized-stacked construction with radial through-hole mounting and ±5% tolerance. The part is classified as obsolete, making identification of compatible substitutes essential for ongoing system support and procurement planning. Equivalent parts must maintain the same capacitance value, tolerance, and mounting configuration while meeting or exceeding the voltage rating and operating temperature requirements.

Key Parameters

Parameter	Value	Specification Type
Capacitance	0.1 µF	Critical
Tolerance	±5%	Critical
Voltage Rating - DC	50V	Critical
Dielectric Material	Polyester, Metallized - Stacked	Critical
Mounting Type	Through Hole	Critical
Package / Case	Radial	Critical
Lead Spacing	0.197" (5.00mm)	Critical
Operating Temperature Range	-40°C ~ 85°C	Important
RoHS Status	ROHS3 Compliant	Compliance

Substitute Part Grouping Explanation

Substitution of the DSF050J104 is based on strict electrical and mechanical parameter matching. The following criteria determine compatibility:

Electrical Parameters:

Capacitance must equal 0.1 µF
Tolerance must be ±5%
DC voltage rating must be equal to or greater than 50V
Dielectric material must be polyester-based with metallized-stacked construction

Mechanical Parameters:

Mounting type must be through-hole
Package configuration must be radial
Lead spacing must be 0.197" (5.00mm)
Physical dimensions must accommodate standard PCB hole patterns

Compliance Parameters:

RoHS3 compliance required
REACH unaffected status required

The RSBDC3100AA00J from KEMET meets all substitution criteria with enhanced specifications in voltage rating (63V DC) and operating temperature range (-55°C ~ 125°C), while maintaining identical capacitance, tolerance, lead spacing, and mounting configuration.

Parameter Comparison

Parameter	DSF050J104 (CDE)	RSBDC3100AA00J (KEMET)	Compatibility
Capacitance	0.1 µF	0.1 µF	Match
Tolerance	±5%	±5%	Match
Voltage Rating - DC	50V	63V	Compatible (higher rating)
Dielectric Material	Polyester, Metallized - Stacked	Polyester, PET, Metallized - Stacked	Compatible
Operating Temperature	-40°C ~ 85°C	-55°C ~ 125°C	Compatible (wider range)
Mounting Type	Through Hole	Through Hole	Match
Package / Case	Radial	Radial	Match
Lead Spacing	0.197" (5.00mm)	0.197" (5.00mm)	Match
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Match
REACH Status	REACH Unaffected	REACH Unaffected	Match

Engineering Selection Recommendations

The RSBDC3100AA00J is a direct functional substitute for the obsolete DSF050J104. Selection is based on the following engineering factors:

Product Status: The DSF050J104 is obsolete, requiring active-status alternatives. The RSBDC3100AA00J maintains active product status with 4284 units in stock, ensuring procurement availability.

Electrical Equivalence: Both parts share identical capacitance (0.1 µF) and tolerance (±5%). The KEMET substitute provides a higher DC voltage rating (63V versus 50V), which is compatible with the original 50V application and provides additional design margin.

Compliance Certification: Both parts are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Thermal Performance: The RSBDC3100AA00J operates across a wider temperature range (-55°C ~ 125°C) compared to the original part (-40°C ~ 85°C), supporting extended environmental applications.

Mechanical Compatibility: Identical lead spacing (5.00mm), radial package configuration, and through-hole mounting ensure direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can the RSBDC3100AA00J replace the DSF050J104 in existing designs?

A: Yes. The RSBDC3100AA00J is electrically and mechanically equivalent. It maintains the same capacitance (0.1 µF), tolerance (±5%), lead spacing (5.00mm), and radial through-hole configuration. The higher voltage rating (63V) and extended temperature range provide enhanced performance margins.

Q: What is the significance of the 63V rating on the KEMET part versus the 50V original?

A: The 63V rating on the RSBDC3100AA00J exceeds the original 50V specification. In circuit applications, this provides additional voltage margin and is fully compatible with 50V-rated designs. No circuit modifications are required.

Q: Are there any physical dimension differences between these parts?

A: The parts have similar overall dimensions with minor variations. The DSF050J104 measures 0.287" L x 0.157" W (7.30mm x 4.00mm) with 0.236" seated height. The RSBDC3100AA00J measures 0.283" L x 0.098" W (7.20mm x 2.50mm) with 0.260" seated height. Both share the critical 5.00mm lead spacing, ensuring PCB compatibility.

Q: Do both parts meet current compliance standards?

A: Yes. Both the DSF050J104 and RSBDC3100AA00J are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement and use.

Q: What is the packaging difference between these parts?

A: The DSF050J104 is supplied in standard packaging, while the RSBDC3100AA00J is supplied in bulk packaging. This does not affect component functionality or performance.

Q: Can the RSBDC3100AA00J be used in high-temperature applications?

A: The RSBDC3100AA00J operates to 125°C maximum, compared to 85°C for the original part. This extended temperature capability supports applications requiring higher thermal performance.

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